Chapter 45: The Child With a Respiratory Alteration

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Hello, and welcome back to the Deep Dive.

Hey there.

Today, we are tackling what I think is fear to call a beast of a topic.

I think that's fair.

If you are training to be a nurse, or even if you're just a parent trying to understand why kids get sick so often, this is definitely for you.

We are diving deep into chapter 45 of Maternal Child Nursing, sixth edition.

That's right.

The chapter title is The Child with a Respiratory Alteration.

And honestly, alteration feels like such a polite clinical word for something that can be just absolute chaos on a pediatric ward.

It's total chaos.

I was looking at the intro to this chapter and the stats are just, they're wild.

Respiratory issues are the number one cause of illness and hospitalization in infants and children.

That's it.

So if you're planning on working in PEDs or the ER or even just family practice, I mean, this is your bread and butter.

It absolutely is.

And the mission for this deep dive is pretty specific.

We aren't just going to list off symptoms.

We need to translate this chapter into a kind of survival guide for nursing practice.

We've got to go from the common sniffles all the way to life -threatening emergencies where you have seconds to act.

It really struck me reading this is just how quickly things can turn.

You can have a kid who looks okay at 2 p .m.

and is in critical distress by 2 .30.

Exactly.

And that is the core theme we are going to explore today.

Why?

Why are children so much more vulnerable than adults?

It's all about the anatomy, isn't it?

It comes down to anatomy and physiology.

So our roadmap today is chronological.

We'll start with the anatomy, the why, then we'll move to the noisy upper airway stuff, dig into the deep lower airway issues, tackle the chronic heavy hitters like asthma and cystic fibrosis, and then finish with the emergencies.

That sounds like a lot, but we are going to break it down so it sticks.

Let's start with segment one, the foundation,

pediatric respiratory anatomy and physiology.

Let's do it.

Okay, so the text says children are not just small adults.

We hear that all the time in nursing school.

But when it comes to breathing,

what does that actually mean?

It means everything.

To really get why respiratory distress is so scary in a kid, we have to talk about physics.

You remember Poiseuille's law?

Oh, wow.

You're taking me back to physics class and I'm sweating already.

Remind me.

It's the law of resistance in a tube.

Basically, if you cut the radius of a tube in half, the resistance to airflow doesn't just double.

It's more than that.

It increases by a factor of 16.

Whoa.

16 times.

16 times.

So picture an adult's windpipe about the size of a garden hose, roughly 20 millimeters.

Okay, got it.

If you get a little swelling, say one millimeter of edema, inside that hose because of a cold,

you barely notice it.

You might, you know, clear your throat.

Because you still have plenty of room for air.

Exactly.

Now look at a newborn.

Their airway is the size of a drinking straw, about four millimeters.

If you get that same one millimeter of swelling all the way around, you haven't just narrowed the straw, you've effectively closed it off.

You've increased the work of breathing 16 -fold instantly.

That is terrifying.

So it's not just that they are small, it's that the math is just working against them.

The math is absolutely working against them.

We call this the risk of obstruction.

Their lower airways are smaller and the cartilage that supports the trachea is undeveloped.

It's kind of flocking.

I have up B, okay.

So if they breathe in too hard or get mucus heavy, the airway can actually collapse on itself.

Speaking of mucus,

the text uses a phrase that really stood out.

Obligatory nose breathers.

That sounds like a biological mandate.

It is, it really is.

Infants, specifically up to about four weeks or even a few months, are hardwired to breathe through their noses.

So they don't know how to just open their mouth and breathe.

They don't have that reflex yet.

So if their nose is plugged, they struggle immensely.

They don't just get annoyed like we do, they panic.

And then think about the implications for feeding.

You can't suck on a bottle or breast and breathe through your nose at the same time if your nose is blocked.

So a simple cold leads to dehydration because they stop eating.

Precisely.

That's why the nurse's favorite tool is the bulb syringe or the suction catheter.

Clearing that nose isn't just for comfort, it's for survival and nutrition.

Now let's talk about the mechanics of breathing.

I noticed the text mentions the diaphragm is the boss for babies.

Yes.

In adults, we use our intercostal muscles, the muscles between the ribs, to help expand the chest.

But in neonates, those muscles are just too weak to do much of the heavy lifting.

So it's all diaphragm.

The diaphragm is the major respiratory muscle.

This leads to that clinical sign we always, always look for.

Retractions.

Can you explain that visually for us?

Sure.

To spot a retraction, you have to understand that a baby's chest wall is very compliant.

It's soft, it's mostly cartilage, not hard bone yet.

Okay, floppy chest.

Got it.

Now imagine a vacuum cleaner.

If you put your hand over the nozzle of a powerful vacuum, what happens?

It sucks my skin in.

Exactly.

When a baby is struggling to breathe against a blockage, maybe mucus, maybe swelling, their diaphragm is pulling hard, like that vacuum motor.

But because the airway is blocked, air isn't coming fast enough to fill the space.

So it pulls the chest in instead.

So instead, that negative pressure sucks the soft chest wall inward.

That is such a vivid image.

So you literally see the skin sucking in between the ribs?

Yes.

You see it between the ribs, which is intercostal, above the collarbone, supraclavicular, and below the sternum, substernal.

If you see the skin sucking in like that, that baby is running a marathon just to take a breath.

It's a sign of significant distress.

One last anatomy point before we move on alveoli.

Those are the little air stacks where gas exchange happens.

Are babies born with a full set?

No.

And this is fascinating.

At birth, you have about 20 million alveoli.

By age three, you have 200 million.

That is a massive jump, a tenfold increase.

It is.

The lung surface area keeps growing until age five to eight.

But clinically, this means infants have less surface area for gas exchange.

They have less reserve.

So if they get sick?

They run out of oxygen much, much faster than an older child.

And briefly, let's touch on the ears.

Why do kids get so many more ear infections compared to adults?

It's geometry again.

In adults, the eustachian tubes, which connect the ear to the throat, are angled down so fluid drains nicely.

In children, those tubes are shorter, wider, and almost horizontal.

So gravity doesn't help?

Gravity doesn't help at all.

Bacteria from the throat can just swim sideways right into the middle ear.

OK, so that's the hardware we are working with.

Tiny, floppy straws and horizontal tubes.

That's a great setup.

Not at all.

Now let's talk about how we assess it.

Segment two, diagnostics and assessment frameworks.

Right.

So we have data and we have observation.

Let's start with the data.

The text mentions blood gas analysis,

the ABGs.

The ABG is the single most useful indication of pulmonary function.

We are looking at pH, partial pressure of oxygen, PaO2, and carbon dioxide, Casio -2.

It tells us if the lungs are actually doing their job of swapping gas.

And the book makes a point about where you get the blood from.

Right.

It notes that arterial blood is much more reliable than capillary blood, especially if the child has poor perfusion.

But getting an arterial stick on a screaming toddler is...

It's difficult.

It's a nightmare.

So we use pulse -locking symmetry a lot.

Constantly.

It's non -invasive.

Generally, our goal is to keep that saturation above 95%.

But remember, look at the patient, not just the number.

If the number is 98%, but the kid is retracting and grunting, the kid is sick.

The kid is sick.

Don't trust the machine over your own eyes.

Exactly.

Now, I want to circle back to something vaguely mentioned in the intro of the book, The Salty Kiss.

Is that a literal thing?

Or is that just an old wives' tale?

It's actually literal, and it's historically how cystic fibrosis was suspected before we had genetic sequencing.

A mother would kiss her baby's forehead and taste salt.

And that leads us to the gold standard test mentioned in the chapter.

It has a terrifying name.

Pelocarpine iontoferesis.

Chuckles.

It's the sweat test.

Pelocarpine is just a drug that makes you sweat.

And iontoferesis is using a tiny electrical current to push that drug into the skin.

Wait, you're shocking the baby.

It's a tiny painless current, I promise.

We stimulate the forearm, collect the sweat on a filter paper, and then measure the chloride content.

And what are the numbers we need to know?

What's the magic number?

If the chloride is greater than 60 Meql, that is positive for cystic fibrosis.

If it's between 40 and 60, it's suggestive and needs retesting.

This confirms the diagnosis.

Got it.

Greater than 60 is a danger zone.

Now, moving to the nursing assessment at the bedside,

we talked about retractions.

What else defines the work of breathing?

We look at rate, depth, ease, and rhythm.

Is there nasal flaring?

That's the nostrils widening to try and suck in more air.

Is there grunting?

Grunting is the baby trying to keep their alveoli open by creating back pressure.

It sounds like a rhythmic, uh, uh, uh.

But I want to highlight one very specific danger sign the expert text warns about.

The silent chest.

This is critical.

Listen to me closely.

Noise requires air movement.

If a child comes in wheezing loudly, that's scary, but it means air is squeezing through.

Okay.

So there's still some movement.

There's still movement.

If that child suddenly stops wheezing, but they still look terrified, they were pale and they are struggling and you put your stethoscope on their chest and hear nothing.

It implies no air is moving at all.

Exactly.

Total obstruction.

The silent chest is an ominous sign of impending respiratory failure.

Never be reassured by a silent chest in a distressed child.

That is the moment you hit the code button or call for immediate help.

That just gives me chills.

Let's move into the specific conditions.

Segment three, upper respiratory tract disorders.

This is the noisy stuff.

We are starting with something familiar, allergic rhinitis or hay fever.

Right.

This is an inflammatory disorder of the nasal mucosa, usually IgE mediated triggered by gas mites, pollen, animal dander, all the usual suspects.

I love the descriptions of the physical signs here.

The allergic salute.

Yes, that's when the child rubs their nose upward with the palm of their hand because it itches.

Right.

If they do it enough, they get a little crease across the bridge of the nose.

And then you have allergic shiners, which look like black eyes, but are actually just dark circles caused by venous congestion under the eyes.

Aside from telling them to stop rubbing their nose, what do nurses do?

What's the intervention?

It's mostly education on environmental modifications.

If it's dust mites, you need to wash sheets weekly in hot water, maybe get rid of the carpet.

Practical stuff.

Very practical.

For meds, we use antihistamines, but be careful.

Some are sedating, so give them at bedtime.

Intranasal corticosteroids are the most effective long -term treatment.

Next up, sinusitis.

How do we tell the difference between a regular cold and a sinus infection?

The 10 -day rule.

If cold symptoms last more than 10 days without improvement, or if they get better and then suddenly get worse, we suspect bacterial sinusitis.

And we treat.

Then we usually treat with amoxicillin.

OK, let's talk about the ears again.

Otitis media.

This is super common.

Incredibly common.

But we need to distinguish between two types.

AOM and OME.

AOM is acute otitis media.

What does that look like if I'm looking in the ear with my otoscope?

Think of an angry red bagel.

The tympanic membrane will be bulging, opaque, and bright red.

It won't move if you puff air at it.

And the kid is miserable.

The child has pain, fever, and they might be pulling at their ear.

And OME.

Otitis media with effusion.

This is fluid behind the ear, but without the acute infection.

So it's not red and angry?

No, the membrane looks retracted, maybe dull gray or yellow.

You might even see air bubbles behind it, like a level.

Why does the distinction matter so much?

Because of how we treat it.

With AOM, we might use antibiotics, though for mild cases in older kids, we might watch and wait.

But OME often just takes time to resolve.

A big risk factor for both is daycare and going back to anatomy bottle propping.

If a baby drinks a bottle while lying flat on their back, the milk can reflux up into those horizontal eustachian tubes.

Wow.

It's a bacterial superhighway.

So nursing education point.

Feet upright.

Okay, let's move down the throat.

Pharyngitis and tonsillitis.

The sore throat complaint.

Right.

And the big question here is always viral or bacterial?

Kind of you'd tell.

Viral is usually a gradual onset with a low fever.

Bacterial usually strep is abrupt.

High fever, severe sore throat.

Maybe that sandpaper rash on the trunk, which indicates scarlet fever.

And if the tonsils are the problem, sometimes they come out.

A tonsillectomy.

The text has a major safety alert for post -op care here.

This is a classic NCLEX question and a real life safety issue.

After a tonsillectomy, the nurse needs to watch the child like a hawk for one specific behavior.

Frequent swallowing.

Why swallowing?

That seems so benign.

Because they are swallowing blood.

It's a sign of hemorrhage from the surgical site.

They might not complain of pain and you won't see blood on the pillow yet.

But if they are gulping constantly, you need to check the throat.

They could be bleeding out into their stomach.

And diet -wise, what are we giving them?

Cool liquids.

No red liquids, because if they vomit, you can't tell if it's jello or fresh blood.

Good point.

And no chips or rough foods that could scrape the scab.

Got it.

Now let's talk about the barking coughs, the croup syndromes.

The most common is laryngotracheobronchitis, or viral croup.

You hear that seal -like barking cough and inspiratory stridor.

It usually gets worse at night.

And the old -school treatment is humidity, right?

Take them into a steamy bathroom.

Yes, steamy bathrooms or cool mist.

If it's severe, we use racemic epinephrine to bring down the swelling quickly, and dexamethasone a steroid.

But then there is the scary cousin of croup, epiglottitis.

This is a true medical emergency.

It's usually bacterial.

The epiglottis, that little flap that covers your windpipe when you swallow,

swells up like a cherry and blocks the airway completely.

How do we spot it?

What are the signs?

Remember the four Ds.

Drooling, dysphagia, which is trouble swallowing, dysphoria, which is trouble speaking, and distressed breathing.

Okay, the four Ds.

The child will often sit in a tripod position shin, thrust out, leaning forward, trying to physically pull their airway open.

They look terrified.

What is the one rule we absolutely must follow?

There is one rule with epiglottitis that is absolute.

If you break this rule, you could kill the child in front of you.

Okay, you have my full attention.

What is the rule?

Keep your hands out of their mouth.

Even if I just want to get a quick look at the throat with a tongue depressor.

Especially then.

The instinct for a nurse is, oh, sore throat, let me grab a tongue depressor.

Right.

If you do that to a child with epiglottitis, that swollen flap is so sensitive that the moment you touch it, it spasms.

Snap.

And the airway closes.

Shut tight.

Complete obstruction.

And because it's so swollen, you can't bagmask them and you can't intigate them easily.

You have created a fatal situation in seconds.

That is absolutely terrifying.

So the child stays in the parent's lap and we do what?

Nothing.

We do everything to keep them calm.

No frivy starts, no blood pressure cuffs, no making them cry because if they cry, they gasp, and if they gasp, they obstruct.

We call anesthesia and ENT immediately to manage the airway in a controlled setting, usually the OR.

Okay, deep breath.

That's the upper airway.

Now, let's say the virus doesn't stop at the throat, it travels down into the lungs.

Segment four, lower respiratory tract disorders.

Now we are leaving the world of obstruction and entering the world of gas exchange, and the first stop on that tour is the bronchioles.

Which brings us to RSV and bronchiolitis.

This hits babies hard.

It does.

Respiratory syncytial virus, or RSV, causes edema and necrosis of the lining of the small airways.

The dead cells and mucus slew off and clumped together.

Creating a plug.

Exactly.

A mucus plug in those tiny airways.

This leads to a phenomenon called air trapping.

How does that work?

How do you trap air?

Think of a plug like a check valve.

When the baby breathes in, the airway dilates a little, so air gets past the plug.

But when they breathe out, the airway naturally constricts.

The plug seals it shut.

So the air can get in, but it can't get out.

It can't get out.

So the lungs just get fuller and fuller.

Hyperinflation.

Yes, hyperinflation.

The baby is working incredibly hard to breathe.

You'll see tachypnea often greater than 60 breaths per minute.

Retractions, nasal flaring, they might be cyanotic.

And this is highly contagious.

Extremely.

Contact precautions are mandatory.

Gown and gloves.

It lives on surfaces for hours.

So how do we fix it?

Are we using bronchodilators, like for asthma?

Actually, the evidence and the textbook says bronchodilators are generally not effective for bronchiolitis.

Because the problem isn't a muscle spasm, which is what bronchodilators fix.

It's a physical blockage.

The problem is snot and dead cells.

So what do we do?

We support them.

It's all about suctioning, especially before feeding so they can breathe hydration to thin that mucus and humidified oxygen if they need it.

It's a waiting game where the nurse's vigilance keeps the baby safe.

Okay, moving on to pneumonia.

Pneumonia is inflammation of the lung parenchyma itself.

In kids under five, it's mostly viral.

In older kids, it's more likely bacterial.

And nursing care for pneumonia involves some positioning strategies, doesn't it?

Yes.

We want to promote drainage.

Frequent position changes every two hours are crucial.

If you let fluid pool, bacteria grow.

Makes sense.

Also, splinting the chest with a pillow can help with pain when they cough.

And again, hydration is key to turning that thick glue in their lungs into something they can cough up.

Okay, let's shift gears to the long -term battles.

Segment five, chronic respiratory conditions.

We have to start with the big one, asthma.

Asthma is the most frequent admitting diagnosis in children's hospitals.

It is a chronic inflammatory disorder, but we really need to understand the mechanics.

The text describes a triad of issues in asthma.

What are they?

One, bronchospasm.

The muscles around the airway squeeze tight.

Two, mucosal edema, the lining swells up.

And three, mucus production thick secretions clog the middle.

So it's a triple threat.

Muscle squeeze, swelling, and snot.

Exactly.

And we assess it by listening for wheezing.

Usually, you hear it on expiration first because it's harder to push air out through a narrow tube.

Let's talk about management.

The NHLBI guidelines mention peak flow meters and an action plan.

How do we explain this to parents so it's not overwhelming?

Think of it like a traffic light.

The child blows into the meter to measure their lung capacity.

Green means they are 80 to 100 percent of their personal best.

They are good.

Go.

Yellow is 50 to 79 percent.

Caution, the airways are narrowing.

Take your quick relief meds now.

And red.

Red is below 50 percent.

Stop.

This is a medical alert.

Take the rescue meds and call the doctor or go to the ER immediately.

You mentioned quick relief meds.

This is a huge area for education because parents get confused between the two types of inhalers.

They do.

We have rescue meds and controller meds.

Break it down for us.

Rescue meds like albuterol, asaba, are your fire extinguisher.

There is a fire right now, an attack, and you use this to put it out.

It relaxes the muscles instantly.

And controller meds.

Controller meds like inhaled corticosteroids are the fireproofing.

They don't put out a fire.

They prevent the fire from starting by reducing inflammation over time.

So you have to teach them that the controller won't stop an attack that's already happening.

Right.

You must take it every day to prevent the attack from happening in the first place.

That's a great analogy.

Now moving to a condition that affects the whole body, cystic fibrosis, CF.

This is a heavy diagnosis.

It's genetic autosomal recessive.

That means both parents must be carriers.

It's a mutation in the CTFR gene.

What does that mutation actually do?

We know it causes the salt issues we talked about, but what else?

It creates a dysfunction in the exocrine glands.

Basically, anywhere the body makes mucus, it makes the wrong kind.

The wrong kind.

Instead of slippery, watery mucus, the body produces abnormally thick, tenacious mucus.

It's like rubber cement.

And that glue gets stuck everywhere.

Everywhere.

In the lungs, that glue traps bacteria, leading to chronic infections and colonization with bugs like pseudomonas.

These kids essentially drown in their own secretions over time.

But the digestive piece is really unique to CF, isn't it?

It is, and nurses have to understand this.

The pancreatic ducts get blocked by that same thick mucus.

So the digestive enzymes, which break down fat and protein, can't get from the pancreas to the food in the intestines.

So the child eats, but the food just passes right through.

Exactly.

This leads to malabsorption.

The hallmark sign is stuttery of fatty, bulky, foul -smelling stools.

It looks like grease.

And these kids can have failure to thrive because they aren't absorbing any nutrients.

So nursing interventions are twofold here.

We have to treat the lungs and the gut.

Correct.

For the lungs, we do airway clearance techniques or ACT's, chest physiotherapy, vest therapy that shakes the chest, cough, coughing.

We want to shake that mucus loose.

And for the gut, what's the fix?

We give pancreatic enzymes.

These are capsules filled with the enzymes that their body can't release.

And when do they take them?

With every meal and snack.

If they eat, they need enzymes.

If they don't take them, they don't absorb the food.

It's that simple.

There's one more chronic condition mentioned, BPD or bronchopulmonary dysplasia.

This is strictly a disease of prematurity.

It happens in low birth weight infants, usually under a thousand grams, who had respiratory distress syndrome and required mechanical ventilation.

So the treatment that saved them caused some damage.

The pressure, the barotrauma, and the oxygen toxicity damaged the delicate alveoli.

These infants have stiff scarred lungs, so they need a lot of support.

And they need incredibly high calories, about 150 hecal per kilo per day, just to grow and repair that lung tissue.

Segment six, emergencies and other conditions.

We can't talk about kids and breeding without talking about things getting stuck.

Foreign body aspiration.

The classic age is six months to five years.

They put everything in their mouths.

What are the main culprits?

What should parents be looking out for?

Hot dogs are the number one choking hazard for fatal obstruction because they are the exact shape of a child's airway.

Oh, that's chilling.

But also peanuts, grapes, latex balloons, and coins.

What does it look like if a kid aspirates something?

You'll see sudden violent coughing or gagging.

If the object goes down past the throat and into a bronchus, the coughing might stop.

Which could be misleading.

Very.

But if you listen, you might hear unilateral decreased breath sounds, meaning air is moving on the left side, but not the right side.

Okay, let's clarify apnea versus SIDs.

They're often conflated.

Right.

Apnea is a clinical finding,

cessation of breathing for more than 20 seconds, or any that is accompanied by bradycardia, a slow heart rate, or sinosis.

Is that different from periodic breathing?

I remember reading about that.

Yes.

Preemies often do periodic breathing where they pause for five to 10 seconds and then breathe rapidly for a bit.

That's normal neurological immaturity.

Apnea is pathologic.

It's a problem.

And SIDs.

Sudden infant death syndrome.

This is every parent's worst nightmare.

It is a tragedy, but we have learned so much about prevention.

The Back to Sleep campaign drastically reduced SIDs rates.

Remind us of the key education points for new parents.

Baby sleeps on their back.

Always.

Firm mattress.

No pillows.

No stuffed animals.

No bumper pads.

Basically, a boring crib is a safe crib.

And no smoking around the baby smoke exposure is a huge risk factor.

And if the worst happens, what is the nurse's role?

Compassionate support.

It is crucial not to ask questions that imply negligence.

The family is in shock.

Our job is to support them through the grief and provide resources.

Finally, tuberculosis.

TB.

It feels like an old disease, but it's still here.

The test is the Mantoo skin test.

Right.

We inject a little fluid under the skin and read it 48 to 72 hours later.

And what counts as a positive?

It's not just redness, is it?

No.

And this is tricky.

And students get this wrong.

It's not about redness.

You can have a big red patch that means nothing.

It's about induration.

The hard -raised bump you can feel.

And the size of that bump matters based on the child's risk.

Yes.

If you have no risk factors, we need a huge bump.

Greater than 15 millimeters, to call it positive.

If you are high risk like a child under four or a recent immigrant, greater than 10 millimeters is positive.

And for the highest risk?

If you are highest risk like an immunocompromised child or someone living with an active TB patient, even a tiny 5 -millimeter bump is positive.

Wow.

We have covered a massive amount of ground.

From the tiny anatomy of a neonate to the genetic complexity of cystic fibrosis.

Let's head to the outro and recap the nursing priorities.

If you take nothing else away from this deep dive, remember three things.

Number one.

Assessment is key.

You have to be able to distinguish sick from not sick.

Use your eyes.

Look for those retractions.

Use your ears.

Listen for the silence.

Don't rely on machines alone.

Number two.

Education is your superpower.

Whether it's teaching a parent how to use an inhaler spacer, explaining why they have to finish antibiotics for an ear infection, or modeling back to sleep, nurses are the bridge between the diagnosis and the home care.

And number three.

Anatomy dictates risk.

Always remember the drinking straw versus the garden hose.

A congested nose in a newborn is a big deal.

A swollen throat in a toddler is an emergency.

Respect the anatomy.

So here is a final provocative thought for you to carry with you.

We talked about environmental triggers for asthma, allergies, even SIDs with smoke exposure.

As nurses, we treat the patient in the hospital bed, but considering the rise in these conditions is often linked to the environment, how does the role of the nurse evolve from just bedside care to community advocacy?

Are we just treating the lungs, or do we need to start treating the air they breathe?

That is the big question, isn't it?

Something to mull over.

Thank you so much for listening to this deep dive into the child with a respiratory alteration, a huge thank you from the last minute lecture team.

Stay curious and breathe easy.

See you next time.