Chapter 48: Respiratory Medications

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Welcome to the Deep Dive, where we take complex information and, well, extract the crucial insights you really need to know.

That's the goal.

Today we're diving into a really vital area for anyone in healthcare.

Respiratory medications.

Absolutely essential stuff.

Our source is the comprehensive chapter on this topic from the Saunders Comprehensive Review for the NCLE -XPN Examination, 7th edition.

We're going to try and unpack it all.

Yeah, so you can feel confident and clear on this knowledge.

Exactly.

We know you, the listener, are looking for a way to get this information thoroughly, but, you know, efficiently without getting totally bogged down.

And this chapter is packed.

So our goal today is to give you a structured, hopefully engaging overview of these meds, how they're delivered, what they do, key safety points.

And what you need to be thinking about as a healthcare professional.

Precisely.

It's definitely a lot to cover, no doubt about it.

But think of us as your guides through this.

We'll highlight what's most important so you can really get the core concepts.

Sounds good.

Where should we start?

Okay, let's dive right in.

Starting with how these medications even get into the respiratory system.

Medication inhalation devices.

That makes sense.

That's the logical first step.

So the chapter outlines several key types.

First up, we have metered dose inhalers, or MDIs.

MDIs.

These are probably what most people picture, you know, you press down on a canister.

Yep, the puffer.

Exactly.

And a mist of medication is propelled out.

It uses a chemical propellant, basically a compressed gas, to push the medicine out.

Figure 48 -1 in the text actually shows this quite clearly.

The classic press and puff.

Okay.

Then we have dry powder inhalers, or DPI's.

DPI's, yeah.

These are interesting because they're different.

They're propellant free.

No gas.

Nope.

Instead, the medication is like a fine powder.

And the user, the patient, needs to inhale really strongly and quickly.

Ah, so it's their breath that pulls the medicine in.

Exactly.

It's your breath that carries the medication deep into your lungs.

That strong, fast breath is really key with DPI's.

Unlike MDIs, where you have to coordinate pressing the canister and breathing in, which is often why people use spacers, you know.

Right, to help with the timing.

DPI's rely entirely on the patient's own inspiratory effort to aerosolize that powder effectively.

Got it.

And the third type mentioned.

Finally, the chapter discusses nebulizers.

Nebulizers, okay.

These deliver the medication as a fine liquid mist.

But instead of a quick puff, they use pressurized air or oxygen to create a continuous mist.

Like a little machine?

Usually, yeah.

And the patient breathes that mist in through either a mask or a mouthpiece over several minutes.

Okay, so MDI's propellant spray,

DPI's breath -activated powder, nebulizer's continuous mist powered by gas.

Makes sense.

Pretty much sums it up.

Now, what if a patient needs to use, say, two different inhaled medications?

Are there rules about the order or timing?

Yes, absolutely.

There are some important guidelines for that to make sure they work best.

Okay.

So if a patient is prescribed two different inhaled meds and one of them happens to be a glucocorticoid.

Like a steroid inhaler.

Exactly, a potent anti -inflammatory steroid.

The recommendation is to use the bronchodilator first.

Bronchodilator first.

Why is that?

Well, it makes sense when you think about it.

You want to open up the airways first with the bronchodilator.

Right, widen the bites.

Exactly.

So that the anti -inflammatory glucocorticoid can then get deeper into the lungs where it needs to work.

Ah, okay.

That's logical.

What about the timing between puffs?

Like between the bronchodilator and the steroid?

Good question.

The chapter emphasizes waiting about five minutes after inhaling the first medication before inhaling the second one if they're different meds.

Five minutes, okay.

Yeah, it gives that first medication, the bronchodilator, some time to start working and open things up.

Makes sense.

And what if you need two puffs of the same inhaler?

Ah, if it's a second dose of the same medication, the wait is much shorter.

Just about one to two minutes between puffs is usually recommended.

Okay, five minutes between different types, just a minute or two for another puff of the same one.

Got it.

Let's move on to the medications themselves.

Bronchodilators seem like the place to start.

Box 48 -1 gives a good overview.

Absolutely.

Bronchodilators are, well, a cornerstone of respiratory therapy.

And the chapter first talks about sympathomimetic bronchodilator.

Sympathomimetic.

That sounds like mimicking the sympathetic nervous system.

Exactly.

Think about your body's fight or flight response.

These medications basically mimic those signals but target it at the lungs.

They cause the smooth muscles in the broncho or your airways to relax and widen.

That dilation makes it easier for air to flow, eases the work of breathing.

So they're, like, triggering that open airway signal?

Uh -huh.

Cool.

What about the other type mentioned, methylxanthine bronchodilators, like theophaline, the chapter says they do a few different things.

They do.

Methylxanthines have a broader range of effects.

They stimulate the central nervous system, which can also impact breathing.

They can dilate blood vessels, both the coronary ones around the heart and the pulmonary ones in the lungs.

Hmm.

Interesting.

They can also act as a diuretic, increasing urine output.

And they relax smooth muscle, not just in the airways.

So doing more than just targeting the lungs directly, when are these various bronchodilators typically used?

The chapter lists several key uses, things like acute bronchospasm, that sudden tightening of the airways.

Right.

Also acute and chronic asthma, bronchitis, and what are called restrictive airway diseases, conditions that limit how much air the lungs can actually hold.

Sounds like a pretty wide range of applications.

Now, like any drug, there must be times when they're not the right choice, or even risky.

What are the contraindications?

Definitely.

The chapter notes several important ones, hypersensitivity, obviously, if you're allergic to the drug.

Sure.

Also, active peptic ulcer disease, severe heart conditions, and significant irregular heartbeats, cardiac dysrhythmias, hyperthyroidism,

and uncontrolled seizure disorders.

Okay, so conditions that could potentially be worsened by these drugs.

What about situations where they can be used, but maybe need extra monitoring?

The chapter mentions cautions.

Right.

These include things like hypertension, high blood pressure, diabetes mellitus,

and narrow angle glaucoma.

In these cases, the provider has to weigh the benefits against the risks really carefully and watch the patient closely.

Makes sense.

It also sounds like bronchodilators can interact with other medications someone might be taking.

What are some key drug interactions to be aware of?

Oh yes, there are several important ones listed.

Theophilane, for example.

The methylxanthine one.

Right.

It can actually increase the risk of toxicity from digoxin, which is a heart medication, and it can make lithium, used for mood disorders, and phenytoin, an anti -seizure drug, less effective.

If you combine theophilane with other bronchodilators, specifically the beta -2 adrenergic agonists, you increase the risk of cardiac dysrhythmias.

So potential heart rhythm issues.

Yeah.

And then some drugs can increase theophilane levels in the body, potentially leading to toxicity, like beta blockers, cementadine, and antacid, and erythromycin, and an antibiotic.

So those make theophilane stronger, potentially dangerously so.

Exactly.

And conversely, other drugs like barbiturates and carbamazepine, both used for seizures, can decrease the effectiveness of theophilane.

Wow.

That really highlights why knowing everything a patient is taking is so critical.

Absolutely crucial.

It's a complex web.

So what about the downsides?

What are the common side effects or adverse effects patients might experience with bronchodilators?

Well, the list includes things like palpitations, feeling your heart race, that's tachycardia, irregular heart rhythms, or dysrhythmia,

restlessness, nervousness, tremors are common too,

also loss of appetite, anorexia, nausea, vomiting, headache, and dizziness.

Interestingly, they can also cause hyperglycemia, high blood sugar.

Really?

Didn't expect that one.

Yeah.

And with the inhaled form specifically, patients often report dry mouth and throat irritation.

Makes sense, spraying something in there.

Right.

And there's also the possibility of developing tolerance over time, meaning the drug works less well, or in some rare cases, something called paradoxical bronchoconstriction.

Paradoxical, meaning it does the opposite.

Exactly.

The inhaler actually makes breathing worse.

It's rare, but definitely something to watch out for.

Wow.

Okay.

So from a nursing perspective, what are the key things to do, the interventions, when caring for someone on bronchodilators?

The chapter outlines several really important actions.

First, you've got to monitor vital signs and lung sounds closely.

That's fundamental.

Right.

Also, be alert for any cardiac dysrhythmias.

Assess their cough, any changes in wheezing, breath sounds, sputum production.

Checking how things are changing.

And monitoring for restlessness or confusion.

Also, ensuring they're getting enough fluids hydration is important.

For oral bronchodilators, it's usually best to give them at regular intervals, around the clock, to keep a steady level in the body.

Consistent dosing.

Right.

And giving the oral forms with or just after meals can help minimize that GI irritation, the nausea, or upset stomach.

Good tip.

If the patient is on theophiline, you absolutely have to monitor their serum theophiline levels regularly.

The therapeutic range is pretty narrow, 10 to 20 micrograms per milliliter.

You need to stay in that window.

Exactly.

And if aminophiline or theophiline is given intravenously, it must be infused slowly and always using an infusion pump for accuracy and safety.

Okay, lots of important monitoring and administration points.

What about patient education?

What do patients need to know?

Oh, education is huge for these meds.

They need to know not to crush or chew any enteric -coated or sustained -release tablets or capsules.

Right.

Messes up how they're released.

Exactly.

They need to be aware of potential interactions, like with caffeine and over -the -counter meds.

They need to know the possible side effects and adverse effects.

So they know what to look out for.

Yes.

And how to monitor their own pulse and when to report significant changes.

If they're using an inhaler or a spacer or a nebulizer, they need clear, hands -on instruction on how to use it properly.

Technique is key.

Crucial.

And also how to tell when their inhaler is running low.

For patients who smoke, you've got to talk about smoking cessation and offer resources.

Makes sense.

If the patient has diabetes, they need to monitor their blood glucose closely because these meds can affect it.

Right, the hyperglycemia risk.

Yeah.

And finally, the chapter suggests that patients with asthma might want to wear a medical -alert bracelet just in case of an emergency.

All really vital points for safety and making sure the meds work.

You mentioned theophiline levels.

The chapter also specifically flags theophiline toxicity.

What are the early warning signs?

Right.

Toxicity is more likely when that serum level goes above 20 mLcGML.

The early signs to watch for are basically an exaggeration of the common side effects.

Increased restlessness, nervousness, tremors, palpitations, and a fast heartbeat, tachycardia.

So if those symptoms pop up or get worse, check the level.

Exactly.

Recognizing those early signs is key to stopping things from getting more serious.

Okay.

Let's shift gears slightly to another important class.

Anticholinergics.

Okay.

Anticholinergics.

These are mostly inhaled medications for respiratory use.

Their main job in the lungs is to block something called muscarinic receptors in the bronchi.

Muscarinic receptors.

Think of them like little switches.

When they get activated, they can cause the airways to constrict, to tighten up.

So by blocking these receptors, anticholinergics lead to bronchodilation.

They help open up the airways.

Okay.

And what are these typically used?

Is it for the same things as the sympathomimetics we just talked about?

There's some overlap, but anticholinergics are often particularly effective for treating chronic obstructive pulmonary disease, COPD.

COPD.

Also for allergy -induced asthma and exercise -induced bronchospasm.

Got it.

What about side effects with these, especially the inhaled ones?

The most common things people report are dry mouth and some irritation in the throat.

The pharynx.

Dry mouth is common with a lot of meds.

It is.

And the chapter actually suggests a simple fix.

Sucking on sugarless candy can help relieve that dryness.

Good tip.

Any more serious effects?

Well, systemic anticholinergic effects on the whole body are pretty rare with the inhaled forms because not much drug gets absorbed into the bloodstream.

But if they do occur, they could include things like increased pressure inside the eye, intraocular pressure blurred vision, a rapid heartbeat, other cardiovascular events, difficulty urinating, or constipation.

So while rare with inhalers, those systemic effects could be significant if they happened.

Is there anything else to be particularly cautious about with anticholinergics?

Yes.

There's a really important one.

Peanut allergies.

Peanut allergies.

How does that connect?

Some Ipertropium products.

Ipertropium is a common anticholinergic inhaler.

It contains soy lecithin as an inactive ingredient.

Soy lecithin is in the same plant family as peanuts.

So there's a potential risk it could trigger an allergic reaction in someone with a severe peanut allergy.

Wow.

That's a critical connection to make.

Good to know.

Okay.

Next up.

Glucocorticoids or corticosteroids.

We mentioned these earlier with the timing of inhalers.

That's right.

Glucocorticoids, as the chapter explains, are potent anti -inflammatory agents.

Anti -inflammatories.

Yeah.

In the respiratory system, their main job is to reduce edema, which is swelling, in the airways.

They're really fundamental for treating asthma and other inflammatory respiratory conditions.

So they tackle the inflammation part of the problem.

Exactly.

And the chapter notes that chapter 44 goes into much more detail about glucocorticoids generally as they have effects all over the body, not just the lungs.

Okay.

Good cross -reference.

So their main role here is calming down that airway inflammation.

Now let's move to leukotriene modifiers.

These sound like they hit a different part of the inflammation pathway.

They do.

Leukotriene modifiers are used more for long -term prevention and treatment prophylaxis, it's called, of chronic bronchial asthma.

So not for an acute attack.

Definitely not.

It's crucial to emphasize they are not rescue medications.

They won't stop an attack that's already happening.

Okay.

Controller meds then.

How do they work?

They work by interfering with leukotrienes.

Leukotrienes are substances the body releases, especially during allergic reactions, that cause bromo constriction and inflammation.

So by inhibiting these leukotrienes, these medications help prevent the airways from constricting,

reduce swelling, and decrease that smooth muscle tightening in the airways.

So they're trying to stop the asthma symptoms before they start.

Are there specific contraindications or cautions for using these?

Yes.

They're contraindicated if someone has a known hypersensitivity, of course, and also in mothers who are breastfeeding.

They should be used with caution in people who have impaired liver function because the liver metabolizes these drugs.

Liver function again?

Yeah, it comes up a lot.

And interestingly, the chapter points out that if you use inhaled glucocorticoids with leukotriene modifiers, there might be a slightly increased risk of getting upper respiratory infections.

An interaction effect.

Highlights how these things can interact.

What about side effects?

What might patients experience with leukotriene modifiers?

Common side effects can include headache, nausea, vomiting,

maybe some indigestion or diarrhea,

generalized pain or muscle aches, sometimes a fever, and dizziness.

And from the nursing side, what should we be monitoring in patients on these meds?

It's important to listen to their lung sounds regularly.

Check for any abnormal sounds like wheezing or crackles that might signal things are getting worse.

We also need to monitor their liver function with lab tests and keep an eye out for any signs of cyanosis that bluish tinge to the skin, which could mean low oxygen.

What instructions should patients get about taking these at home?

They should usually take the medication either one hour before meals or two hours after eating.

Food can affect absorption.

Got it.

Empty stomach generally.

Yeah.

And encourage them to drink plenty of fluids.

Crucially, they must understand this is a maintenance medication.

They shouldn't stop taking it even if they feel fine and have no symptoms.

Keep taking it even when feeling good.

Absolutely.

Consistent use is the key to preventing those asthma symptoms.

That's a critical point for any preventative med.

Okay, let's move on to inhaled non -steroidal anti -allergy agents.

That's a mouthful.

It is.

These agents, like cromolin sodium, fall into a few categories,

anti -asomatic, anti -allergic, and mast cell stabilizers.

Mast cell stabilizers.

What do mast cells do again?

Mast cells are immune cells that are loaded with histamine and other inflammatory chemicals.

When they get triggered by an allergen, they release all that stuff.

Ah, causing the allergic reaction.

Exactly.

These medications work by stabilizing the mast cells, basically inhibiting that release of chemicals after they're exposed to an antigen or allergen.

It stops the allergic response that can trigger asthma.

So they work kind of upstream in the allergic reaction.

When are these typically used?

They're used for allergic rhinitis hay fever, basically bronchial asthma, and also to prevent exercise -induced bronchospasm.

Any contraindications or cautions?

The main contraindication is just hypersensitivity to the drug itself.

If cromolin is given orally, which is less common for respiratory stuff, but it exists, you need caution in patients with impaired liver or kidney function.

Okay.

What about side effects from the inhaled forms?

The most common things happen right after inhaling.

Maybe some coughing, sneezing, a stinging feeling in the nose, or even a temporary bronchospasm.

Some people also report an unpleasant taste.

Hmm.

Unpleasant taste?

Anything nurses should be monitoring?

Monitor the patient's respiratory rate and effort.

And listen carefully to lung sounds for any raunchy, that rattling sound or wheezing signs the airways might be narrowing.

Okay.

And key patient education points for these?

Well, for the oral capsules, if used, take them 30 minutes before meals.

But for all forms, the really important thing is don't stop taking them abruptly.

Why not?

Because it could lead to a rebound asthma attack.

The symptoms could come back worse.

Ah, okay.

Don't stop suddenly.

Right.

And the chapter also gives a general tip for all inhaled meds.

Try sipping some water before and after inhaling.

It can help prevent coughing and wash away any bad taste.

That's a good practical tip.

Okay.

Now we get to monoclonal antibodies.

Omelizumab is the example.

This sounds very targeted.

It is.

Very much so.

Omelizumab is quite fascinating.

It's an antibody made in a lab specifically designed to bind to immunoglobulin E, or IgE.

IgE.

That's the allergy antibody, right?

Exactly.

IgE is a key player in allergic responses.

So, omelizumab grabs onto the IgE, reducing the amount that's free -floating and available to trigger allergic reactions.

This is particularly helpful for people with allergy -related asthma.

How does this stop the reaction?

By binding the IgE, it limits the release of all those mediators, histamine, and others that cause inflammation and bronchoconstriction.

Very targeted.

How is it given?

Is it an inhaler?

No, this one's different.

It's given as a subcutaneous injection under the skin, usually every two to four weeks.

An injection.

Okay.

And the dose?

It's tailored to each patient, based on their serum IgE levels and their body weight.

Makes sense.

Even being so targeted, are there still potential risks or contraindications?

Oh, yes.

It's contraindicated if someone's hypersensitive to omelizumab itself.

And potential side effects can include reactions at the injection site, like redness or swelling.

Okay, common with injections.

Right.

Also, things like viral infections, upper respiratory infections, sinusitis, headache, pharyngitis, sore throat.

And though it's rare, there's a serious risk of anaphylaxis.

Anaphylaxis.

The severe allergic reaction.

Yes, life -threatening.

So, that's a major concern.

There have also been some rare reports linking it to malignancies, but a direct cause hasn't been definitively established.

Anaphylaxis is always scary.

What monitoring and precautions are needed when giving omelizumab?

Because of that anaphylaxis risk, you have to be incredibly vigilant.

Monitor their respiratory rate, rhythm, depth,

listen to lung sounds carefully.

Okay.

Watch closely for any signs of an allergic reaction, rash, hives, swelling.

And especially during the first few times it's given, you absolutely must have medications and equipment ready to treat a severe reaction immediately available.

Be prepared for the worst case scenario.

Always.

What do patients need to know if they're prescribed omelizumab?

They need to understand it's not a quick fix.

They shouldn't expect immediate improvement.

It works over time to control the underlying allergy.

Okay.

Manage expectations.

Critically important.

They must not stop taking or reduce the dose of any of their other asthma medications unless their doctor specifically tells them to.

Don't change other meds on their own.

Absolutely not.

And finally, they should avoid getting any live virus vaccines while they're on omelizumab treatment.

Okay.

That covers a lot of meds specifically for respiratory conditions.

Now the chapter shifts to antihistamines.

Very common off and over the counter.

Exactly.

Antihistamines, also known as histamine antagonists or H1 blockers.

They work by competing with histamine for binding sites on H1 receptors in the body.

So they block histamine from doing its job.

Pretty much.

Histamine is that chemical released during allergic reactions that causes a lot of the symptoms, itching, sneezing, runny nose.

By blocking its receptors, antihistamines prevent that response.

What specific effects of histamine are they blocking?

Well, when histamine hits those H1 receptors, it causes things like constriction of smooth muscles and blood vessel walls, like in the lining of your nose.

That contributes to congestion.

The stuffy nose feeling.

So antihistamines help reduce that runny nose, the nasopharyngeal secretions.

They can also decrease secretions in the GI tract and the bronchial tubes.

Basically, they have a drying effect.

Drying things up.

Makes sense for allergies.

When are they typically used?

Why range of uses?

Managing symptoms of the common cold, allergic rhinitis or hay fever, nausea and vomiting, motion sickness, hives, urticaria.

And some are used as sleep aids because of their sedating side effect.

Right.

The drowsiness.

Are there cautions or issues with antihistamines, especially with other drugs or certain people?

Yes.

That drowsiness, the CNS depression, can be significantly worse if taken with alcohol, opioids, sleeping pills or barbiturates.

Combining depressants is bad.

Very bad.

They should also be used cautiously in people with COPD.

That drying effect we mentioned.

It could potentially thicken respiratory secretions, making them harder to cough up.

Oh, interesting point for COPD.

And disinhydramine, a common older antihistamine, has anticholinergic effects.

So it should be avoided in people with narrow angle glaucoma because it can increase eye pressure.

Okay.

So check for glaucoma too.

What are the common side effects of antihistamines generally?

It's quite a list.

Drowsiness and fatigue are common, of course.

Dizziness.

Difficulty urinating urinary retention.

Blurred vision.

Sometimes wheezing.

Constipation.

Dry mouth.

GI irritation.

Low blood pressure.

Hearing disturbances.

Photosensitivity increased sun sensitivity.

And paradoxically, some people get nervous or irritable, confused, or even have nightmares.

Wow.

Quite a range.

From a nursing standpoint, what are important interventions?

Monitor for urinary problems like difficulty starting to urinate.

That's due to the potential retention.

Okay.

Giving oral antihistamines with food or milk can help lessen any GI upset.

An injection should be intramuscular in a large muscle, not subcutaneous.

Got it.

And key education points for patients taking these, whether prescription or OTC.

Advise them to avoid hazardous activities driving operating machinery because of the drowsiness risk.

Avoid alcohol and other CNS depressants reinforces the interaction risk.

If using them for motion sickness, take it about 30 minutes before travel, then usually before meals and at bedtime during the trip.

Good timing advice.

And for that common dry mouth side effect, suggest sucking on hard candy or ice chips.

Practical tips.

Okay.

Let's move to nasal decongestants.

Another common OTC category for stuffy noses.

Right.

Nasal decongestants.

These can be adrenergic agents mimicking adrenaline to constrict blood vessels in the nose.

They can also be anticholinergic, reducing secretions, or even corticosteroids, reducing inflammation in the nose.

Their main job is to shrink those swollen nasal membranes and cut down on fluid secretion.

Open up the passages.

So they tackle the stuffiness directly.

When are they used?

Commonly for symptomatic relief from allergic rhinitis, hay fever, and acute core isa, basically the common cold with lots of nasal discharge.

Okay.

Are there contraindications or cautions, especially since some mimic adrenaline?

Yes, exactly.

Because they can have systemic effects, especially the adrenergic ones affecting blood pressure and heart rate.

Right.

They should be used very cautiously or are sometimes contraindicated in people with hypertension, heart disease, hyperthyroidism, or diabetes.

These conditions could be worsened.

Makes sense.

What about side effects from the decongestants themselves?

Common ones include nervousness, restlessness, maybe trouble sleeping.

They can also cause hypertension and hyperglycemia.

Blood pressure and sugar again.

Yeah.

But a really big concern, especially with sprays and drops, is the risk of tolerance and rebound nasal congestion.

Ah, the rebound effect.

I've heard of that.

Yeah, you use it for too long and when it wears off, the congestion comes back even worse.

It makes people want to use it more, creating a cycle.

Vicious cycle.

Exactly.

The chapter strongly emphasizes not using these topical nasal decongestants for more than about 48 hours.

48 hours, that's the limit.

Nursing monitoring, anything specific.

Be aware of the potential for cardiac dysrhythmias, especially in patients with heart issues.

And in diabetics, monitor blood glucose levels as they can be affected.

Okay.

And key patient education.

Advise them to maybe limit caffeine intake as it could worsen nervousness or palpitations.

And the crucial point.

Hammer home that 48 -hour limit for nasal sprays and drops to prevent that rebound congestion.

Got it.

48 hours is the magic number.

Okay, now, expectorans and eucalyptic agents.

These both seem to deal with mucus but differently.

That's right.

Expectorans, like guifinesin, that's a common one.

Yeah, and lots of cough serps.

Exactly.

They work by helping to loosen bronchial secretions, make the mucus less sticky, easier to cough up.

They're often used for dry, non -productive coughs to try and make the cough more productive, bring stuff up.

Okay, loosen it up.

And mucolytics, like a acesistine.

Mucolytics work differently.

They act directly on the mucus itself.

They help thin out thick, sticky mucus, making it less viscous and easier to clear with coughing.

So expectorans loosen, mucolytics thin.

Got it.

Are there cautions or contraindications?

Yes.

Mucolytics combined with dextromethorphin, which is a cough suppressant, should generally be avoided in COPD patients.

Why is that?

Because in COPD, you need to be able to cough effectively to clear secretions.

Suppressing the cough can be harmful.

Ah, okay.

Don't suppress a useful cough.

Right.

And acesistine itself has a caution.

It can sometimes increase airway resistance, so it's generally not recommended for asthma patients because it might trigger bronchospasm.

Another important distinction, side effects for these generally.

Usually mild.

Maybe some GI irritation, nausea, upset stomach,

skin rash sometimes, or irritation in the mouth and throat.

Nursing considerations for administration or monitoring.

Acetylcysteine is often given by nebulizer.

It shouldn't usually be mixed with other meds in the nebulizer.

Okay.

And if a bronchodilator is also prescribed, it's usually best to give the bronchodilator about five minutes before the acetylcysteine.

Open the airways first again?

Exactly.

It helps the mucolytic get deeper.

Nurses should also watch for side effects of acetylcysteine, like nausea, vomiting, maybe mouth inflammation, or runny nose.

Yeah.

And instructions for patients taking these at home.

Take them with a full glass of water.

And maintaining good fluid intake overall is really important, helps thin secretions naturally too.

Drink lots of water.

Yes.

And encourage them to do deep breathing and poff effectively to help clear out that loosened or thinned mucus.

Makes sense.

Staying hydrated is key.

Okay.

Let's talk antitissives now.

These are the cough suppressants.

Correct.

Antitissives act on the cough control center in the brainstem, the medulla.

They reduce the urge to cough, generally used for cause that are non -productive, not bringing anything up, and are often dry and irritating.

So for that annoying hacking cough, what are potential side effects?

Dizziness, drowsiness, sedation are common.

Also GI upset, like nausea, dry mouth, constipation.

And importantly, especially with opioid -based antitissives like codeine.

Yeah.

There's a potential for respiratory depression, slowed breathing.

Respiratory depression, that sounds serious.

Nursing interventions or precautions related to that.

Definitely.

Be aware of that risk, especially with the opioid ones.

Encourage fluids.

Elevating the head of the bed can help breathing.

And be aware that some antitissives, the opioid ones, have potential for dependence with long -term use.

Addiction risk.

Right.

They should generally be avoided in patients with a head injury or after cranial surgery.

And definitely avoid combining them with other CNS depressants, opioids, sedatives, barbiturates, antidepressants, because of the increased risk of respiratory depression and sedation.

Don't mix depressants.

Got it.

What key education points for patients, like when is a cough serious and how to use these safely?

Tell patients that if their cough lasts longer than a week or if it comes with other symptoms like fever or a rash, they need to see their health care provider.

Don't just keep suppressing it indefinitely.

Exactly.

Also, advise them to avoid hazardous activities requiring alertness due to drowsiness risk and avoid alcohol while taking them.

Good safety advice.

OK, next.

Opioid antagonists.

We usually hear about these for reversing overdoses.

That's their main critical use.

Opioid antagonists, like Naloxone Narcan is a common brand name.

They rapidly reverse the effects of opioids, including that dangerous respiratory depression in an overdose.

But importantly, they only work for opioid effects.

They won't help if respiratory depression is caused by something else.

Specific to opioids.

Yes.

And another crucial point the chapter makes,

the opioid might last longer in the body than the antagonist.

So the respiratory depression could come back after the initial reversal.

So it might wear off and the person could stop breathing again.

Constant monitoring needed.

Absolutely vital.

Continuous monitoring.

What about side effects of the antagonist itself?

Because it reverses opioid effects so quickly, it can trigger withdrawal symptoms.

In someone physically dependent on opioids.

Things like nausea, vomiting, tremors, sweating, increased blood pressure, fast heart rate.

Precipitated withdrawal.

OK.

Nursing interventions when giving an opioid antagonist.

Vigilant monitoring of vital signs, especially respirations, is critical.

Administration and titration of 5 -Venoloxone is often an RN responsibility given in small doses based on response.

And you absolutely must have oxygen and full resuscitative equipment ready to go whenever you're giving an opioid antagonist.

Be prepared.

Yeah.

Makes sense.

OK, big shift now.

We're moving into tuberculosis medications.

It's a whole different ballgame.

It really is.

The chapter stresses that medications are the most effective way to treat TB and prevent spreading it.

OK.

The treatment depends on whether someone has active disease or just exposure.

And treating TB is tough.

That bacterium, mycobacterium tuberculosis, has this waxed outer capsule.

Makes it hard to kill.

Very hard for drugs to penetrate and kill.

That's why you always use a multi -drug regimen, several different antibiotics at the same time.

Multiple drugs.

Why?

To destroy the bacteria quickly and, crucially, to minimize the risk of the bacteria developing resistance to any single drug.

Fighting resistance.

So usually a combo of drugs.

How long does treatment typically last for active TB?

It's long.

Usually six to nine months with a combination of drugs.

Could be longer for people who also have HIV.

Wow.

Six to nine months.

That's a commitment.

It is.

But the good news is the risk of spreading the infection drops significantly after someone's been on effective meds for about two to three weeks.

OK.

That's good to know.

And most people will have negative sputum cultures, meaning they're not contagious anymore after about three months if they take their meds consistently.

Compliance is key.

What about people just exposed but not actively sick?

Latent TB.

Right.

Latent TB infection.

Their immune system has walled off the bacteria.

They're not sick and not contagious.

They often get preventive therapy.

To stop it from becoming active later.

Exactly.

That usually involves taking just one drug, isoniazid, often called INH, for nine to 12 months.

Still a long time, even for prevention.

The chapter mentions first line and second line TB meds.

What's the difference?

First line meds are the mainstays.

They're generally the most effective and tend to have better side effect profiles.

They form the foundation of treatment.

OK.

The go -to drugs.

Right.

Second line meds are used when there's resistance to the first line drugs.

Or if the patient just can't tolerate the first line options.

But second line drugs often come with more significant, potentially more toxic side effects.

So you try first line first, hope they work.

Ideally, yes.

Drug resistance in TB is a huge global problem, right?

How does that happen?

The chapter highlights that a major reason is patients not finishing the entire course of treatment.

Stopping meds too early.

Exactly.

If you don't kill all the bacteria, the survivors can mutate and develop resistance to the drugs they were exposed to.

Makes sense.

And because TB is treated with multiple drugs, if resistance develops to one, the whole regimen becomes less effective.

This can lead to multi -drug resistant TB, MDR -TB.

MDR -TB.

That sounds bad.

It is.

That's when the TB is resistant to at least isoniazid and rifampin, two of the best first line drugs.

It often results from interrupted treatment and can then be spread to others.

Really underscores why taking all the meds for the full time is so critical.

Absolutely non -negotiable for TB treatment.

What are some general education points that apply to pretty much all TB meds?

Okay, several crucial ones.

Patients must understand,

do not skip doses.

Complete the entire course exactly as prescribed, even if you feel better.

Don't stop early.

Never.

Don't take any other medications, OTC, herbals, supplements without checking with their provider first.

Big risk of interactions.

Okay.

Stress the importance of follow -up appointments, vision tests, lab work, whatever is needed for their specific meds.

Keep up with monitoring.

Yes.

Avoid alcohol.

Many TB drugs are hard on the liver and alcohol makes it worse.

Liver toxicity risk.

Right.

Take the meds, usually on an empty stomach, one hour before or two hours after meals with a full glass of water.

Avoid antacids around the same time.

They can block absorption.

Empty stomach, no antacids.

Usually, yeah.

And finally, they need comprehensive education on the specific potential side effects of their drugs and clear instructions on what symptoms mean they need to call their provider immediately.

Tailored info is key.

Okay.

Let's dive into those first line meds, starting with isoniazid, INH.

Okay.

Isoniazid.

It's a powerful bactericidal drug.

It kills the bacteria.

It works by stopping the synthesis of mycolic acids.

Mycolic acids.

Those are in the cell wall.

Exactly.

Essential parts of the TB bacterium cell wall.

INH works best against actively multiplying bacteria, but can also inhibit dormant ones inside cells.

It only works when the bacteria are dividing, which is another reason it's always used in combination with other drugs.

Always part of a combo.

Are there contraindications or cautions for INH?

Yes.

Contraindicated if known hypersensitivity, or if the patient has acute liver disease.

Used cautiously with chronic liver disease, alcoholism, or renal impairment.

Liver disease again?

Big time with INH.

Also use caution if they're taking niacin or other drugs known to be tough on the liver.

And as we said, alcohol really increases the risk of INH -related liver damage.

Okay.

Any drug interactions?

It can increase the toxicity of carbamazepine in finny -toined seizure meds and might decrease levels of ketoconazole and antifungal.

Got it.

What about side effects of isoniazid itself?

Potential for hypersensitivity.

Peripheral neuritis, nerve damage in hands and feet, causing tingling, numbness, pain.

Nerve damage.

Yes, that's a key one.

Other neural toxicity.

Hepatotoxicity and hepatitis liver damage shown by elevated liver enzymes.

Pyridoxin deficiency, that's vitamin B6.

Ah, B6 deficiency.

Also injection site irritation if given IM, nausea, vomiting, dry mouth, dizziness, hyperglycemia, and even vision changes.

That's quite a list.

What kind of monitoring is needed for patients on INH?

Close monitoring for hypersensitivity.

Assess for any liver dysfunction that means regular liver function tests.

Watch carefully for signs of hepatitis.

Anorexia, nausea, vomiting, weakness, fatigue, dark urine, jaundice.

Yellow skin or eyes.

Right.

If those appear, hold the INH, notify the provider immediately.

Also monitor closely for that peripheral neuropathy, tingling, numbness, burning.

Any mental status changes, vision changes report immediately.

Dizziness means safety precautions.

Check blood counts, blood glucose.

Okay, how about administration?

Best on an empty stomach one hour before or two hours after meals.

At least one hour before aluminum -containing antacids.

And paradoxin, vitamin B6, is often prescribed along with INH.

Why the B6?

To help prevent or treat that peripheral neuropathy risk.

Ah, okay.

Prophylactic B6.

What specific education for patients on INH?

Big one.

Avoid tiramine -containing foods.

Tiramine.

Like an aged cheese cured meats.

Exactly.

Aged cheeses, salami, sauerkraut, soy sauce.

Eating those while on INH can cause a reaction.

Red, itchy skin, pounding heart, feeling light -headed, hot, clammy headache.

If that happens, call the provider.

Wow.

Food interaction.

Yeah.

And they absolutely need to know the signs of neurotoxicity, hepatitis, liver problems, and report those or any vision changes right away.

Okay, that's a lot on isoniazid.

Let's move to the next major first -line drug.

Rifampin.

Prefampin.

This one works by inhibiting bacterial RNA synthesis.

It basically stops the bacteria from making essential proteins.

Stops RNA production.

Got it.

Like INH.

Always use in combination.

Always use with at least one other effective TB drug to prevent resistance.

Contraindications or cautions for rifampin.

Contraindicated with hypersensitivity.

Used cautiously with liver dysfunction or alcoholism again.

Risk of hepatotoxicity.

Liver concerns seem common with TB drugs.

Very common.

And rifampin is a potent inducer of liver enzymes.

This means it speeds up the metabolism of many other drugs, making them less effective.

Ah, so it makes other drugs weaker.

Which ones?

Lots of them.

Oral anticoagulants like warfarin.

Oral diabetes meds.

Chlorinphenicol.

Digoxin.

Certain heart rhythm drugs like disapiramide and mexoletane.

Quinidine.

Fluconazole.

Methadone.

Phenatoin.

Verapamil.

The list is long.

Wow.

So checking for interactions is absolutely critical with rifampin.

Absolutely essential.

Requires a thorough medication review.

What are the common side effects of rifampin?

Hypersensitivity reactions.

Fever.

Chills.

Headache.

Muscle pain.

Shortness of breath.

GI upset heartburn.

Nausea.

Vomiting diarrhea.

And the really characteristic one.

A color change.

Yes.

A harmless red -orange discoloration of all body fluids.

Urine.

Feces.

Sweat.

Tears.

Red -orange tears.

Wow.

Yeah.

Patients might also have vision changes.

Hepatotoxicity.

Increased uric acid levels.

Blood count abnormalities.

Or colitis.

That red -orange thing is definitely something to warn patients about.

Even if harmless.

Oh, absolutely.

You have to tell them.

Or they'll panic.

What monitoring is needed?

Monitor for hypersensitivity?

Check blood counts, uric acid, liver function tests regularly.

Watch for signs of hepatitis.

Hold the drug.

Notify provider if they appear.

Monitor for colitis symptoms like bad diarrhea and any vision changes.

And patient education for remifapin.

Inform them clearly about the red -orange body fluids.

Reassure them it's normal, but can permanently stain soft contacts and clothes.

Stain contacts.

Good to know.

Definitely.

Tell them to report immediately if they get jaundice, unexplained weakness, fatigue, nausea, vomiting, sore throat, fever, or any unusual bleeding or bruising.

Got it.

Okay.

That's refampin.

Next first -line drug.

Ethymbutil.

Ethymbutil.

This one is bacteriostatic.

It inhibits bacterial growth rather than killing them directly.

It interferes with their metabolism and RNA synthesis.

It's slow -acting and only works when bacteria are dividing.

Must be used with other bactericidal TB drugs.

So it stops them growing, needs partners that kill.

Contraindications or cautions?

Contraindicated with hypersensitivity or pre -existing optic neuritis inflammation of the optic nerve.

Optic nerve inflammation.

That sounds like it affects vision.

It does.

That's the major concern with ethymbutil.

It's also generally contraindicated in kids under 13 because assessing vision is harder.

Used cautiously with renal dysfunction, gout, any existing eye problems like diabetic retinopathy or cataracts, and caution if used with other neurotoxic drugs.

Vision problems are the big red flag here.

What are the potential side effects?

Besides hypersensitivity, GI, upset like anorexia, nausea, vomiting,

dizziness, malaise, confusion, joint pain, more seriously,

dermatitis, optic neuritis, peripheral neuritis, low platelets, increased uric acid, and severe allergic -like reactions.

Optic neuritis sounds really concerning.

What monitoring is crucial?

Vision monitoring is paramount.

Baseline and periodic checks of visual acuity and color perception.

Any reported changes?

Hold the drug immediately.

Notify the provider.

Check vision constantly.

Also monitor for hypersensitivity.

Check blood counts, uric acid, renal, and liver function.

Give it once daily, usually with food to decrease GI upset.

Monitor uric acid and signs of gout.

Monitor kidney function, mental status, dizziness.

Watch for peripheral neuritis signs.

And patient education for ethymbutil.

Tell them taking it at bedtime or with anti -nausea meds might help with nausea.

Most importantly, notify the provider immediately if they notice any visual problems.

Blurred vision,

changes in color perception, especially red -green confusion.

Report vision changes right away.

Absolutely.

Also report any rash, joint swelling or pain, or numbness, stingling, burning in hands or feet.

Okay, one more first -line drug.

Perizinamide.

Perizinamide, or PZA.

Its exact mechanism isn't fully known.

Thought to disrupt the TB cell membrane and metabolism.

Can be bacteriostatic or bactericidal, depending on concentration.

It's often used in the initial two -month intensive phase of short -course therapy, always with other TB drugs.

Okay, contraindications or cautions?

Contraindicated with hypersensitivity.

Used cautiously with diabetes, renal impairment, or gout.

And generally in children, it might make gout meds less effective.

Potential for cross -sensitivity with INH, ethionamide, or niacin.

What are the side effects?

Can cause elevated liver function tests and increased uric acid levels.

Joint pain, muscle pain, more serious.

Photosensitivity, sun sensitivity, hepatotoxicity, and low platelets.

Liver and uric acid again, plus photosensitivity.

Monitoring.

Monitor for hypersensitivity.

Deck blood counts, liver function tests, uric acid levels regularly.

Observe closely for hepatotoxicity signs, hold med, notify provider if they occur.

Monitor for painful joints.

For diabetics, monitor blood glucose closely as PZA can make it harder to control.

Okay, patient education for perizinamide.

Take it with food to reduce GI upset.

And because of photosensitivity, avoid prolonged sun or UV light exposure until they know how it affects their skin.

Use sun protection.

And just to reiterate that general point, again, some of these TB meds, like refinpin and a second -line one called rifabutin, cause that red -orange discoloration of body fluids.

Harmless, but can stain contacts and clothes.

Patients need to know.

Good reminder.

Okay, that covers the first -line drugs in detail.

Now the second -line medications.

Used when first -line fails or isn't tolerated.

Right.

And often more toxic.

Exactly.

Higher risk of side effects, often less effective.

The chapter lists several.

First, rifabutin.

Similar to rifampin, inhibits RNA polymerase.

Used mainly to prevent MSC disease and advanced HIV.

And treat active MS or TB in HIV.

Cautions for rifabutin.

Big one.

Interacts with oral contraceptives and some HIV meds, decreasing their levels.

Need non -hormonal birth control.

Okay, side effects.

Rash, GI upset, low white cells, neutropenia, that red -orange discoloration again, eye inflammation, uveitis, muscle inflammation, joint pain, hepatitis, chest pain, shortness of breath, flu -like symptoms, nursing, monitor liver, joints, eyes, can be taken without regard to food.

Sounds similar to rifampin, but with its own issues.

Next.

Rifapentine.

Another rifamycin, like rifempin and rifabutin, currently approved only for pulmonary TB.

Similar cautions about interacting with oral contraceptives, warfarin, some HIV meds.

Side effects.

Red -orange secretions, hepatotoxicity.

Monitor liver function.

Can also be taken without regard to food and warned about photosensitivity.

Okay.

How about capryamycin sulfate?

Capryamycin.

Injectable antibiotic for MDR -TB when there's lots of resistance.

Given IM only.

Cautions.

Increased risk of kidney damage, nephrotoxicity,

hearing loss, otoxicity, and neuromuscular blockade if used with eminoglycosides or loop diuretics.

Used cautiously with kidney problems, hearing nerve impairment, liver issues, mycenae gravis, Parkinsonism.

Don't give with streptomycin.

Side effects.

Mainly those three.

Nephrotoxicity, ototoxicity, neuromuscular blockade, nursing.

Get baseline hearing tests.

Monitor kidney liver function, electrolytes, INO.

Indirect deep IM.

Rotate sites.

Educate patients.

Avoid tasks needing alertness.

Report hearing loss, balance issues, breathing trouble, weakness, hypersensitivity.

Serious potential toxicities there.

What about other antibiotics listed as second line?

Aminoglycosides and fluoroquinolones like moxifloxacin.

Used in combo with other TB drugs.

They kill bacteria by interfering with protein synthesis.

GI upset common.

Fluoroquinolones generally not for kids.

Cautions, contraindications.

Hypersensitivity, neuromuscular disorders, eighth cranial nerve damage or contraindications.

Caution in elderly neonates.

Infants do risk of kidney issues, CNS depression.

Risk of toxicity higher with other nephrotoxic or ototoxic drugs.

Side effects.

Hypersensitivity, injection site pain, nephrotoxicity, otoxicity, neurotoxicity, super infections.

Monitor for all those toxicities.

Live renal function.

Baseline hearing tests.

Vision changes.

Hydration, INO, urine tests.

Educate.

Report hearing loss, vision, urinary problems.

Okay.

Ethionamide is another one.

Yes.

For MDR -TB.

Mechanism isn't fully known.

Contraindicated with hypersensitivity.

Caution with diabetes.

Renal dysfunction.

Side effects.

Anorexia.

Nausea.

Vomiting.

Metallic taste.

Orthostatic hypotension.

Dizziness.

Onstanding.

Jaundice.

Mental status changes.

Peripheral neuritis.

Rash.

Monitor liver renal function.

Glucose and diabetics.

May give B6 for neuritis.

Educate.

Take with food.

Change position slowly.

Report rash.

And amino salicylic acid.

Another second line for MDR -TB.

Inhibits folic acid used by bacteria.

Contraindicated with sensitivity to salicylates like aspirin.

Amino benzoates block its absorption.

Side effects.

Hypersensitivity.

Bitter taste.

GI irritation.

Severe skin reaction.

Exfolio dermatitis.

Blood problems.

Crystals and urine.

Thyroid changes.

Nursing.

Monitor hypersensitivity.

Offer mouth rinse of candy for taste.

Encourage fluids.

Monitor INO.

Educate.

Discard if turns purplish brown.

Take with food.

Urine might turn red with bleach.

Chemical reaction, not blood.

No aspirin OTC without approval.

Report signs of blood problems.

Bruising, et cetera.

Cycloserine.

Yes, for MDR -TB.

Interfers with cell wall building.

Alcohol or ethionamide increase seizure risk.

Caution with seizure history.

Depression, anxiety, psychosis, renal issues, alcohol use.

Side effects are mainly CNS.

Hypersensitivity, neurotoxicity.

Seizures, heart failure, headache, vertigo, confusion.

Mood changes, depression, suicidal thoughts.

Nursing.

Monitor LOC, mental status, renal hepatic function.

Serum drug levels often monitor weekly.

Pick 2535mL -CGML.

Educate.

Take after meals.

Report rash CNS toxicity immediately.

Avoid driving until effects known.

Need for weekly blood levels.

Finally, streptomycin again as a second -line TB drug.

Yes, it's an immunoglycoside antibiotic.

Used in combo for TB.

Kills bacteria by interfering with protein synthesis.

Contraindications.

Hypersensitivity.

Myasthenia gravis.

Parkinsonism.

Eighth cranial nerve damage.

Caution in elderly neonates infants.

Toxicity risk increases with other nephrototoxic drugs.

Major side effects.

Nephrotoxicity, neurotoxicity, vestibular auditory toxicity.

Balance hearing.

Box 48 detail signs like urine changes, numbness, seizures, clumsiness, dizziness, ear ringing, fullness, hearing loss.

Nursing.

Monitor hypersensitivity.

Liver renal function.

Assess closely for otoneuro nephrotoxicity.

Baseline hearing test.

Repeat regularly.

Monitor vision.

Hydration.

I know.

Urine.

Peripheral neuritis.

Educate.

Report hearing loss, vision, urinary problems immediately.

Wow.

That's an intense list of second -line drugs with serious potential issues.

Requires incredibly careful management and monitoring.

Okay, the chapter shifts again now to influenza medications.

Right.

Covers vaccines and antiviral treatments.

Big emphasis on annual vaccination because flu strains change year to year.

Usually recommended in the fall.

Oknov.

Important to get updated info each year.

Two main types of vaccine.

Inactivated vaccine.

The flu shot given by intramuscular injection.

And the live attenuated vaccine, a nasal spray.

Standard Trivelink covers two A strains, H1N1, H3N2, and one B strain.

Quadrivalent adds another B strain.

Vaccine components change yearly based on circulating viruses.

Recommended for pretty much everyone 6 months and older unless contraindicated.

What's the difference between the shot and the spray in terms of who gets which?

The nasal spray, live weakened virus, is only for healthy people aged 2 to 49 who aren't pregnant.

It might give a stronger immune response in kids with no prior flu vaccine exposure, but maybe less protective in older adults with prior exposure.

Okay, and the shot?

The shot, inactivated killed virus, is approved for 6 months and older depending on the specific

Safe for pregnant women.

Can't cause the flu because the virus is killed.

Are there high priority groups for vaccination?

Yes.

Pregnant women.

Caregivers of infants under 6 months.

People 6 months to 24 years old.

Healthcare workers.

Emergency personnel.

And adults 25 to 64 with chronic conditions or weakened immune systems.

Okay.

Contraindications or precautions for the vaccines?

For the shot, inactivated.

Severe hypersensitivity to previous flu vaccine or components, like egg protein, though guidelines have relaxed for egg allergy.

History of yambere within 6 weeks of a previous flu shot.

Precaution.

Moderate severe active illness.

Defer.

Under 6 months old.

And the nasal spray?

For the spray, live attenuated.

Under 2 or 50 plus pregnant.

Kid stances on long -term aspirin.

Raise syndrome risk.

Severe nasal congestion.

Certain long -term conditions.

Asthma unless well controlled.

Diabetes.

Anemia.

Heart, kidney, lung disease.

Weakened immune system.

Recent live vaccines.

What about side effects from the vaccines?

For the shot.

Usually mild, local stuff.

Soreness, redness, swelling at injection site.

Maybe mild body aches, malaise, low fever.

Short -lived.

And the spray?

For the spray.

Runny nose, congestion, cough, headache, sore throat.

Also usually mild and brief.

Nursing interventions for giving flu vaccines.

Give the shot I am.

Usually deltoid muscle in adults, otter kids.

Monitor for any immediate side effects or hypersensitivity, especially first timers.

Document everything.

Date, type, manufacturer, lot number, route, site.

Key patient education points.

Importance of annual vaccination.

Reassure them the shot cannot cause the flu.

Other respiratory bugs can still happen.

Inform spray recipients about potential short -term virus shedding.

Takes about two weeks for antibodies to develop.

Refer to CDC for the latest info each year.

Okay.

The chapter also covers antiviral meds for flu.

Yes.

Used to treat or sometimes prevent flu.

Effectiveness depends on the circulating strain.

Rapid flu tests help decide if they're needed.

Can be used for prophylaxis, prevention after exposure, but not a substitute for vaccination.

Contraindicated with hypersensitivity.

Table 48 -1 lists specific ones like omentadine, oseltamivir, tamilu, romantadine, xanamivir, and their side effects.

General nursing interventions and education for antivirals.

For treatment, they work best if started within 48 hours of symptom onset.

Crucial to complete the entire prescription, even if feeling better.

Monitor for specific side effects of the drug being used.

Educate patients they might still be contagious.

Adjust activities of dizzy or fatigued.

Take as prescribed for the full duration.

Finally, the chapter briefly mentions pneumococcal vaccines.

Right.

Protect against structococcus pneumonia bacteria.

Pneumococcal conjugate vaccine, PCV.

Mainly for infants' young kids to prevent serious disease like meningitis.

Pneumococcal polysaccharide vaccine, PPSV, for adults 65 plus and high -risk kids adults over two.

Side effects.

Usually mild, local.

Redness, swelling, pain at injection site.

Maybe fever, irritability, drowsiness, less appetite.

Chapter 37 has more details on these.

Okay.

The chapter includes a critical thinking scenario too.

Page 668.

Client on isoniazid reports anorexia, nausea, dark urine.

What's the concern?

The answer points out those symptoms strongly suggest non -viral hepatitis, a known adverse effect of isoniazid.

So liver damage.

Yes.

Nursing actions.

Withhold the next INH dose.

Notify RN provider immediately.

Anticipate orders for liver function tests.

ALT, AST, bilirubin.

Elevated levels confirm hepatitis.

Really reinforces watching for those liver toxicity signs.

Absolutely.

Critical reminder.

The chapter ends with practice questions.

Yes.

Several questions on pages 506, 515.

With answers and detailed rationales on 671, 674.

They cover everything we've discussed.

Testing knowledge on specific drives like rifibutin,

naloxone, INH, rifampin, ethambutil, cycloserine,

acetylcysteine.

Good for reinforcing the material.

Definitely.

They cover side effects to watch for like hepatitis with ricabutin, neuritis with INH, practical nursing advice like taking rifanesin with water, having suction ready for acetylcysteine, key patient teaching points for INH, rifampin, ethambutil, and monitoring needs like serum levels for cycloserine.

Reviewing those questions and rationales is a great way to solidify understanding.

Well, that was a truly comprehensive deep dive into the respiratory medications chapter from Saunders.

It really was.

We covered a huge amount.

Inhalation devices, all the major drug classes, bronchodilators, anticholinergics, steroids, leukotriene modifiers, mast cell stabilizers, monoclonal antibodies, antihistamines, decongestants, expectorants, mucolytics, antitussives, opioid antagonists.

And then the very detailed sections on first and second line TB meds plus flu and pneumococcal vaccines and antivirals.

Exactly, highlighting key concepts, assessments, procedures,

safety, priority actions, and even touching on those review questions.

We tried to define terms as we went.

Hopefully you, our listener, feel much better equipped now to navigate the complexities of respiratory meds.

This chapter is dense, and we aimed for a structured overview that hits the essentials, making it maybe a bit less overwhelming.

Absolutely.

Understanding these drugs, how they work, side effects, nursing responsibilities is just fundamental for safe, effective care for patients with respiratory issues.

We've definitely covered all the key sections of this chapter now.

So we've equipped you with a solid foundation.

But here's something to think about.

Considering how respiratory illnesses constantly evolve, like with flu strains or drug resistant TB, and how new medications are always being developed, what do you think are some of the biggest future challenges and opportunities in respiratory pharmacotherapy that health care professionals will face?

That's a great question to ponder.

Definitely lots to consider there.