Chapter 33: Cardiovascular Disorders (Pediatric Nursing)

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Think for a moment about a child's heart.

It's this tiny, really powerful engine just working tirelessly, amazing in its resilience, but also, you know, incredibly complex.

Absolutely.

Today we're really diving deep into that complexity.

We're focusing on chapter 33 of the Saunders Comprehensive Review for the NCLEX -PM Examination, the seventh edition, all about cardiovascular disorders in children.

Yeah, this is such a crucial area.

Yeah.

And well, anyone prepping for the NCLEX or really anyone just wanting a solid grasp of pediatric cardiac health knows this chapter is packed.

I mean, it's a lot of information.

Oh, definitely.

It can feel a bit trying to keep it all straight.

Exactly.

So consider this our attempt to cut through some of that noise.

Our goal here is to pull out the really critical knowledge, the key concepts, the essential assessments, the interventions, and, well, present it in a way that's clear and actually sticks with you.

Right.

We're aiming for a thorough but, you know, digestible understanding.

It's less about just memorizing isolated facts and more about grasping the practical nursing insights, the stuff that really makes a difference when you're caring for these kids.

And as we go through this, you should keep two core concepts sort of in the back of your mind because they'll keep coming up.

Gas exchange, basically,

how well oxygen is getting where it needs to go and perfusion, how well that blood is circulating to deliver the oxygen and nutrients.

They really tie everything together.

Okay, so let's dive right into heart failure or HF.

Simply put, it's when the heart just can't pump enough blood to meet the body's metabolic needs for oxygen and nutrients.

The heart isn't stopping necessarily, but it just can't keep up.

And for infants and children, what's usually the root cause?

Is it different than adults?

Yeah, the most common cause in kids is actually congenital heart defects, structural problems they're born with.

These might be shunts, you know, abnormal connections causing blood to flow where it shouldn't or obstructions where flow is blocked.

There's sometimes a mix of both.

These issues just put extra strain on the heart muscle.

We often hear about left -sided versus right -sided heart failure.

Is it that clear cut in children?

That's a great question.

Interestingly,

in infants and children, you often see signs of both left and right -sided failure happening together.

When the whole pump is compromised, it tends to affect both sides.

Box 33 -1 in the chapter actually breaks down the specific signs for each side, which is helpful.

Okay, so if a child is diagnosed with HF, what are the main goals of treatment?

What are we trying to achieve?

Well, the goals are pretty comprehensive.

First, improve cardiac function, make the heart pump better.

Second, get rid of excess fluid and sodium.

Third,

decrease the heart's workload.

And finally, improve tissue oxygenation and decrease the body's overall oxygen consumption.

Makes sense.

Now, from a nursing standpoint, what are those really early clues we should be looking for?

The things that might whisper heart failure?

Early detection is so key.

One of the first signs can be tachycardia, a fast heart rate, especially when the child's just resting or with minimal effort.

Also, tachypnea, which is rapid breathing.

Okay.

And in infants, this is a specific one, profuse sweating on the scalp, even if they aren't hot.

That can be a really significant early sign.

Wow, okay.

What else is on our radar?

Fatigue and irritability are common too.

You might notice a baby tiring easily during feeds or an older child seeming unusually fussy or wiped out.

Sudden weight gain is another big one that often points to fluid retention.

And of course, any obvious signs of respiratory distress, like really working hard to breathe.

Right, always a concern.

Okay, so we spot these early signs.

What are the critical nursing interventions once HF is suspected or confirmed?

Continuous monitoring is really the name of the game.

We need to constantly assess for those early HF signs we just talked about and be super vigilant for respiratory distress.

That includes counting respirations accurately for a full minute every time.

And what about the heart itself?

What specifically are we watching?

Right, we need to monitor the apical pulse listening right over the heart's apex again for a full minute and watch really carefully for any irregular rhythms.

Temperature monitoring is also important, looking for fever and any signs of infection, especially respiratory ones, which can really worsen HF.

Fluid balance must be a huge focus.

Oh, absolutely huge.

Strict intake and output I know is essential.

For infants, that means weighing diapers.

It's the only way to be accurate.

And daily weights are critical, too.

A gain of even one pound in a single day.

That strongly suggests fluid accumulation.

Beyond the numbers, what physical signs of fluid are we looking for?

You're looking for edema swelling.

Could be facial, could be the arms and legs, what we call peripheral edema, or even dependent edema in the lowest parts of the body.

And you need to listen carefully the lung sounds for crackles or other signs of fluid.

Any of those findings need prompt reporting.

Is there anything we can do with positioning?

Yes, definitely.

Elevating the head of the bed, like a semi -fowler's position, often makes breathing easier.

And for infants, maintaining a neutral thermal environment is key preventing cold stress because that increases oxygen demands.

We also want to promote rest, minimize noise and stimulation.

And oxygen.

Right.

Cool.

Humidified oxygen is often given.

Little infants might get an oxygen hood, older kids, a nasal cannula or mask.

And it's really important to cluster care group nursing activities together to allow for uninterrupted sleep.

Rest is just vital.

Nutrition must be tricky, too.

Balancing needs with their energy levels.

Exactly.

You need to support adequate nutrition, but be really mindful of their limited energy.

Feeding when they're hungry, soon after waking up, helps conserve energy.

Small, frequent feedings are usually tolerated much better than big ones.

Less work, less oxygen needed.

In really acute situations, sedation might even be used just to promote rest.

Okay.

Let's talk meds.

Digoxin comes up a lot, right?

Yes.

Digoxin is a common one.

It helps the heart muscle contract more effectively.

But there are very, very specific rules for giving it.

The absolute number one thing is check the apical heart rate for one full minute before giving any dose.

Always.

And what are the cutoffs?

When you hold it?

The exact numbers can vary slightly by institution or provider, but generally you'd hold it if the apical pulse is less than,

say, 90 to 110 beats per minute in infants and younger kids, or less than 70 in older children.

Always check the specific order, of course.

And it's good to know, a single dose for an infant rarely goes over one ml, which is 50 micrograms or 0 .05 milligrams.

Okay.

And what about watching for problems?

Toxicity?

Oh, absolutely critical.

We monitor blood levels.

The therapeutic range is usually pretty narrow, like 0 .5 to 0 .8 nanograms per milliliter.

Digoxin toxicity is a real risk if levels get too high.

Signs include poor feeding or loss of appetite, vomiting, bradycardia, that slow heart rate, and any kind of weird heart rhythm.

If you suspect toxicity, you report it to the RN immediately.

Are there other common heart failure meds for kids?

Yes.

ACE inhibitors, that stands for angiotensin converting enzyme inhibitors, are often used.

They help lower blood pressure and reduce the heart's workload.

With those, you need to watch for low blood pressure, potential kidney issues, and sometimes a persistent cough.

So we'll be monitoring BP, checking kidney function labs like BUN and creatinine, protein levels, white blood cell counts, urine output, specific gravity, urine protein, lots to track.

And diuretics, I assume, to deal with the fluid?

Exactly.

Diuretics like furosemide help get rid of that extra fluid in sodium.

But a major watch out with these is hyperkalemia, low potassium levels, usually below 3 .5 million EQL.

Signs can be subtle, like muscle weakness or cramps, maybe confusion in older kids, or irritability and restlessness.

ECG changes can happen too.

And how does low potassium affect digoxin?

That is such an important connection.

If a child is on both digoxin and a potassium -losing diuretic like furosemide, low potassium makes them much more sensitive to digoxin toxicity.

So you have to be incredibly vigilant in those situations.

So how do we replace that potassium?

Well, potassium supplements might be prescribed, assuming their kidney function is okay.

This often goes hand in hand with those potassium -losing diuretics.

We also encourage potassium -rich foods, age appropriately, of course, things like bananas, baked potato skins, maybe peanut butter.

And regular electrolyte monitoring, especially potassium normal, is 3 .5 to 5 .0 million EQL is crucial.

I guess fluids might be restricted sometimes too.

Yes, especially in the acute stage, fluid intake might be limited to help manage that overload.

And when that happens, you have to be just as watchful for dehydration, sunken fontanel in babies, poor skin, turgor, dry mouth, fewer tears, decreased urine output, really concentrated urine, and sodium levels.

We monitor those too, aiming for the normal range of 135 to 145 mgql.

It's interesting, parents might want to know that many infant formulas actually have a bit more sodium than breast milk.

Finally, what about teaching the parents?

That seems huge.

It's absolutely vital.

We have to reinforce instructions about the diagnosis, and especially about medication administration.

Box 33 -2 gives great examples for digoxin home care, and crucially, parents need CPR training.

Chapter 49 covers that, but it's essential.

Having them demonstrate med administration back to you is really important too.

Okay, great foundation on HF.

Let's shift gears to defects with increased pulmonary blood flow.

What's the basic problem here?

So with these defects, there's an abnormal connection somewhere, either inside the heart between chambers, or between the big arteries leaving the heart, the aorta, and pulmonary artery.

This lets blood shunt or flow from the left side, which normally has higher pressure, over to the right side.

And what does that typically lead to in infants?

Because you've got all this extra blood flowing to the right side, and then out to the lungs.

These infants very commonly show signs and symptoms of heart failure.

Makes sense.

Let's look at specifics.

First up, atrial septal defect, ASD.

Right, and ASD is basically a hole in the wall, the septum, between the two upper chambers, the atria.

This allows oxygenated blood from the left atrium to flow back into the right atrium.

What does that extra blood do on the right side?

It leads to enlargement of the right atrium and the right ventricle because they're handling more volume.

Interestingly, small ASDs might cause no symptoms, but larger ones often lead to HF.

You might also see signs of decreased cardiac output.

Box 33 -3 details those.

And how are ASDs usually fixed?

Some can be closed using a device during cardiac catheterization.

Larger ones typically need open heart surgery, usually with cardiopulmonary bypass, often done before school age.

Okay.

Next, atrioventricular canal defect, or AV canal.

What's that?

This one results from incomplete fusion of structures called endocardial cushions during fetal development.

These cushions are key to forming the center of the heart parts of the septa and the mitral and tricuspid valves.

It's also notably the most common heart defect in children with Down syndrome.

What signs might we see?

There's usually a characteristic murmur.

Infants often have mild to moderate HF.

And you might notice cyanosis, that bluish tint, gets worse when they cry.

Signs of decreased cardiac output can also be present.

How is AV canal defect managed?

Sometimes a palliated procedure called pulmonary artery banding is done first in very sick infants to reduce lung blood flow.

But complete repair requires open heart surgery with bypass.

Got it.

Moving on to patent ductus arteriosus PDA.

Okay, so the ductus arteriosus is a normal blood vessel in the fetus connecting the aorta and pulmonary artery, letting blood bypass the lungs.

A PDA occurs when this vessel fails to close after birth like it's supposed to, usually within the first few weeks.

What are the clinical signs of a PDA?

Often there's a very distinct machine -like murmur.

Symptoms can range from none at all to significant HF.

You might also find a widened pulse pressure, the difference between systolic and diastolic BP, and pulses that feel really strong or bounding.

Again, decreased cardiac output signs are possible.

And the treatment for PDA?

In preemies and some newborns, a medication called endomethacin can sometimes help it close.

Otherwise it might be closed via cardiac cath using a device or through surgery.

All right, last one in this category, ventricular septal defect, VSD.

A VSD is a hole in the wall between the two lower chambers, the ventricles.

It's actually one of the most common congenital heart defects.

What's the usual for a VSD?

The good news is that many small or moderate VSDs actually close on their own within the first year.

But there's usually a murmur.

And HF is common if it doesn't close or is large.

And yes, signs of decreased cardiac output can occur.

How are VSDs managed if they persist?

Closure with a device during cath is an option for some.

Open repair, again with cardiopulmonary bypass, is the other main approach.

Okay, let's switch focus now to obstructive defects.

What defines this group?

Here the problem is anatomical narrowing or stenosis.

Blood flow out of the heart is obstructed, usually near one of the valves like the aortic or pulmonary valve.

What kind of symptoms might we see?

Similar to the increased flow defects, infants and children can show signs of HF.

But if the obstruction is mild, they might actually be asymptomatic.

Let's start with aortic stenosis.

What's happening there?

Aortic stenosis is a narrowing of the aortic valve, the door between the left ventricle and the aorta.

This makes it harder for the left ventricle to pump blood out to the body.

It can lead to decreased cardiac output, thickening of the left ventricle muscle that's hypertrophy, and eventually backup of pressure into the lungs,

causing pulmonary congestion.

What usually causes it in kids?

The most common type is valvular stenosis, where the valve leaflets themselves are malformed, maybe only two leaflets instead of three, or they're fused.

You'll typically hear a characteristic murmur.

How does it present differently in babies versus older children?

Infants with severe stenosis will show signs of poor perfusion,

pretty quickly decreased cardiac output, poor feeding, maybe paleness, weak pulses.

Older kids might complain of getting tired easily with exercise, chest pain, or feeling dizzy, especially when standing for a while.

What are the treatment options?

Sometimes the valve can be stretched open with a balloon during cardiac cath, that's balloon dilation.

Surgical valvotomy, cutting the valve open is another option, but often these are palliative and valve replacement might be needed later in life.

Okay.

Next, coarctation of the aorta.

Sounds serious.

It is.

Correctation is a localized narrowing of the aorta itself, usually near where the ductus arteriosus connects.

What problems does this narrowing cause?

In infants, it can lead to HF and signs of decreased cardiac output.

Older children might have symptoms related to high blood pressure before the narrowing headaches, dizziness, fainting, even nosebleeds.

Are there key physical findings we should look for?

Yes.

This one has some classic signs.

You'll typically find higher blood pressure in the arms than in the legs.

The pulses in the arms might feel strong or bounding, while the femoral pulses in the legs are weak or even absent.

The legs and feet might also feel cool.

How is coarctation fixed?

Balloon angioplasty during cath can be done, though the narrowing can sometimes come back.

That's restinosis.

Surgical repair is also common.

And finally, in this obstructive group, pulmonary stenosis.

What's narrowed here?

Pulmonary stenosis is a narrowing right at the entrance to the pulmonary artery, where blood leaves the right ventricle to go to the lungs.

This makes the right ventricle work harder, causing it to hypertrophy, and it decreases blood flow to the lungs.

In severe cases, the right ventricle might even be underdeveloped or hypoplastic.

And the extreme form is pulmonary atresia.

Right.

Pulmonary atresia is when the valve is completely fused shut.

No blood can get from the right ventricle to the lungs that way.

What are the signs of pulmonary stenosis?

There's usually a murmur.

Mild cases might be asymptomatic, but newborns with severe narrowing will often be cyanotic because not enough blood is getting oxygenated.

Severe cases can also lead to HF and signs of decreased cardiac output.

How is pulmonary stenosis treated?

Similar to aortic stenosis, balloon dilation during cardiac cath is often the first step.

Surgery might also be needed.

Okay, now let's tackle defects associated with decreased pulmonary blood flow.

How are these different?

The key here is a combination.

You have obstructed blood flow to the lungs plus a hole, like an ASD or VSD, allowing blood to shunt between the right and left sides.

What's the result of that combination?

Because of the obstruction, pressure builds up on the right side of the heart.

If that right -sided pressure gets higher than the left,

deoxygenated blood from the right shunts over to the left side through the hole.

This mixes with oxygenated blood and gets pumped out to the body, leading to systemic desaturation, low oxygen levels, hypoxemia, and cyanosis.

Tetralogy of phallus is the classic example here, right?

Can you break down the four parts?

Exactly.

Tetralogy of phallus, or TOF, has four components.

One, a ventricular septal defect, VSD.

Two, pulmonary stenosis narrowing of the pulmonary valve outflow.

Three, an overriding aorta where the aorta sits over the VSD, getting blood from both ventricles.

And four, right ventricular hypertrophy, because the right ventricle is working hard against that stenosis.

How does the shunting work in TOF?

Which way does blood flow?

It depends on the balance of resistance between the pulmonary circulation, lungs, and the systemic circulation body.

If pulmonary resistance is high because of the stenosis, blood shunts right to left across the VSD by passing the lungs and causing cyanosis.

How might TOF look in an infant?

They might be noticeably blue or cyanotic right at birth, or develop it gradually over the first year.

As the stenosis worsens, there's usually a murmur, and they can have these sudden scary episodes of deep cyanosis and breathing difficulty called hypersynotic spells, or TET spells.

What triggers those TET spells?

Often things that increase oxygen demand suddenly like crying, feeding, having a bowel movement.

What about older kids with TOF?

As cyanosis becomes more chronic, they might instinctively squat down.

Squatting actually helps increase systemic vascular resistance, pushing more blood towards the lungs.

You might also see clubbing of the fingers and toes, and poor growth due to that chronic low oxygen.

What are the surgical options for TOF?

There are typically two routes.

A palliative shunt, like a blealactosic shunt, might be done first in young infants to increase blood flow to the lungs.

This buys time.

The goal is usually a complete repair, closing the VSD, and relieving the pulmonary stenosis, often done in the first year of life.

Okay.

What about tricuspid atresia?

Tricuspid atresia means the tricuspid valve, the one between the right atrium and right ventricle, never developed.

So there's no direct path for blood from the right atrium to the right ventricle.

So where does the blood go?

How does it get to the lungs?

Blood returning to the right atrium has to cross over to the left atrium, usually through an ASD or a patent form in OVAL.

From the left atrium, it goes to the left ventricle.

Then some of that mixed blood has to get back over to the right ventricle, usually through a VSD, to reach the lungs.

It's a complex rerouting.

Are other defects often seen with it?

Yes.

It's often associated with pulmonic stenosis and sometimes transposition of the great arteries.

What's the overall impact on circulation?

You get complete mixing of oxygenated and deoxygenated blood on the left side, leading to systemic desaturation.

And there's usually some degree of pulmonary obstruction and decreased lung blood flow.

How does it present in newborns versus older children?

Newborns typically show cyanosis,

tachycardia, fatigue with feeding, and dyspnea, difficulty breathing.

Older kids show signs of chronic hypoxemia and clubbing.

How is tricuspid atresia managed?

If the ASD is too small, it might be opened up during cath.

But surgery is always needed.

It usually involves a series of operations, often culminating in what's called a Fonten procedure, to separate the circulations as much as possible.

You mentioned clubbing again.

What's the significance?

Clubbing is a really key physical sign.

It tells you there's been chronic hypoxia tissues haven't been getting enough oxygen consistently over time.

It suggests compromised peripheral circulation and that organ oxygenation might be affected.

Alright, let's move to the next category, mixed defects.

What's the main characteristic here?

In mixed defects, fully oxygenated blood coming back from the lungs mixes with deoxygenated blood coming back from the body,

usually somewhere within the heart chambers or great vessels.

This mixing leads to systemic desaturation, often pulmonary congestion too, and sometimes decreased cardiac output.

So what kind of signs and symptoms do we generally see?

You'll typically see signs of heart failure because of the volume overload and inefficient pumping.

The specifics really depend on how much mixing occurs and the exact anatomy of the defect.

Let's start with hypoplastic left heart syndrome, HLHS.

That sounds very serious.

It is extremely serious.

HLHS involves severe underdevelopment of the entire left side of the heart, tiny left ventricle, often aortic and mitral valve atresia or stenosis.

The aorta itself is usually underdeveloped too.

How does this affect a baby right after birth?

Initially, while the ductus arteriosus is still open, they might just have mild sinosis and some HF signs because the right ventricle is pumping blood to both the lungs and the body via the PDA.

But once that ductus starts to close,

systemic perfusion plummets.

They become rapidly cyanotic, develop poor cardiac output, and go into cardiovascular collapse.

What's the outlook without treatment?

Sadly, HLHS is fatal within the first few months or weeks without intervention.

Survival depends on a series of complex stage surgeries, the Norwood, Glenn, and Fonten procedures.

Next, transposition of the great arteries, or TGA.

What's switched around here?

In TDA, the aorta arises from the right ventricle and the pulmonary artery arises from the left ventricle.

They're hooked up backwards.

How does that mess up oxygenation?

It creates two separate parallel circuits.

Deoxygenated blood comes back to the right heart and gets pumped right back out to the body via the aorta.

Oxygenated blood comes back to the left heart and gets pumped right back to the lungs via the pulmonary artery.

They don't cross over.

So what happens to the baby at birth?

If there's very little mixing between these circuits, maybe just a tiny patent form in Ovil,

the baby will be profoundly cyanotic and very sick right from the start.

What if there's more mixing, like a large VSD or PDA?

If there's a way for oxygenated and deoxygenated blood to mix, the sinosis might be less severe initially.

However, these babies often develop significant heart failure symptoms because the lungs are getting overloaded with blood flow.

You'll typically see cardiomegaly, an enlarged heart, develop pretty quickly.

Surgery is always needed to correct the circulation.

Let's discuss total anomalous pulmonary venous connection, or TATVC.

What's the problem here?

In TAPVC, the pulmonary veins, which should bring oxygen -rich blood from the lungs to the left atrium, don't connect there.

Instead, they drain abnormally into the right atrium, either directly or via other veins.

What does that do to blood flow?

All the blood, both oxygenated from the lungs and deoxygenated from the body, ends up mixing in the right atrium.

For any oxygenated blood to reach the body, it has to cross from the right atrium to the left atrium through an ASD.

This overloads the right heart, leading to right -sided enlargement, while the left side might be small.

You see signs

Are there specific dangers with TAPVC?

Yes.

A major concern is obstruction of those abnormally draining pulmonary veins.

If that happens, sinosis worsens dramatically, and the baby can deteriorate very quickly.

Surgical repair to reroute the veins to the left atrium is essential.

Okay, last one in this mixed group, truncus arteriosus.

What failed to happen during development here?

Truncus arteriosus results from the failure of the single large vessel leaving the embryonic heart, the truncus, to divide into a separate aorta and pulmonary artery.

So you end up with one single large artery, the truncus, arising from the heart, usually sitting over a large VSD.

What's the consequence of having just one big vessel?

Blood from both ventricles mixes in this single vessel before going to both the body and the lungs.

This leads to systemic desaturation and hypoxemia.

There's usually a murmur.

Infants typically have moderate to severe HF, variable sinosis, poor growth, and activity intolerance.

Surgical repair is needed to separate the circulations.

That covers the defects.

Now, let's consolidate the general interventions for children with any cardiovascular defect.

What are the main nursing priorities across the board?

The absolute top priority is ongoing, sharp monitoring for signs related to whatever specific defect the child has.

Constant vigilance and assessment are key.

And vital signs, obviously.

Absolutely.

Frequent, accurate vitals are

Plus, really close observation of respiratory status, looking for nasal flaring, retractions, use of accessory muscles.

Any change needs immediate reporting to the RN.

And listening to breath sounds regularly for crackles, wheezes, anything abnormal indicating congestion.

Is positioning helpful for breathing?

Yes.

If they're working hard to breathe, that reverse trendling position head and upper body elevated can definitely help decrease the effort.

And oxygen use?

Humidified oxygen should be given as prescribed.

Sometimes, if things are severe, they might need more support, like intubation and a ventilator.

We talked about hypercyanotic spells, or TET spells, earlier with TOF.

Remind us of the immediate nursing actions.

Right, those spells need a fast response.

Number one,

immediately put the infant in the knee chest position.

That increases systemic resistance and pushes more blood to the lungs.

Then, get ready to give 100 % oxygen, usually

What other ongoing monitoring is essential?

Keep watching for signs of heart failure, especially fluid or tension edema.

Check peripheral pulses for quality and equality.

Strict INO, including weighing diapers, is non -negotiable.

Report decreased urine output promptly.

And daily weights are vital for fluid balance.

Providing adequate nutrition, often high -calorie options, is crucial for growth and energy.

Assisting with meds, planning care to maximize rest and minimize stress, these are all key parts of the plan.

And preparing the child and family for procedures like cardiac cath is important too.

Let's zoom in on cardiac catheterization.

What is it exactly and why is it done?

Cardiac cath is an invasive diagnostic and sometimes therapeutic procedure.

A thin tube, a catheter, is inserted into a blood vessel, usually in the groin and guided up to the heart.

It lets doctors measure pressures and oxygen levels inside the heart chambers and vessels, visualize structures with contrast, eye angiography, and sometimes even perform interventions like closing holes or opening valves.

Chapter 49 goes into more detail.

What are the risks involved?

Like any invasive procedure, there are risks.

Bleeding or bruising at the entry site, clot formation they could block flow distally, and temporary heart rhythm disturbances or dysrhythmias are the main ones.

What nursing care is needed before the cath?

Good prep is key.

We need accurate height and weight for catheter sizing,

a thorough allergy history, especially checking for iodine or shellfish allergies because of the contrast dye.

Assess for any infection, even a diaper rash, which might postpone the procedure.

Check and mark pulses below the insertion site like the dorsalis pedis and posterior tibial for a baseline comparison later.

Get baseline oxygen saturation.

And importantly, familiarize the family and the child age appropriately with what will happen, the equipment, and reinforce the teaching.

Allow them to ask questions and voice concerns.

And what about after the procedure?

What's the focus?

Post -cath care is all about monitoring for complications.

Keep them on a cardiac monitor and pulse oximeter, usually for several hours.

Check those distal pulses frequently, compare them to the other side for equality and symmetry.

Monitor the temperature and color of the affected leg or arm coolness or pallor could mean a blockage and needs immediate reporting.

Frequent vital signs as ordered.

Check the pressure dressing over the site, often for bleeding or hematoma.

Look under the child to check the sheets for blood.

What if there is bleeding?

Apply continuous direct pressure immediately just above the insertion site and notify the right away.

Okay, what else post procedure?

Keep the affected limb straight and still for the prescribed time, usually four, six hours for venous access, six to eight for arterial, incurred fluids, oral or IV to help flesh out the contrast die.

Manage any pain with acetaminophen or ibuprofen as ordered.

And keep the family updated, preparing them for next steps if needed, like surgery.

What discharge teaching do parents need after a cath?

Clear instructions are crucial.

They usually remove the pressure dressing the next day, replace it with a regular bandage for a couple more days.

Keep the site clean and dry, no tub baths for two, three days.

Showers are usually okay.

Watch for signs of infection, redness, swelling, drainage, fever or bleeding, and report immediately.

Avoid strenuous activity for a few days, but usually school is okay.

Regular diet.

Acetaminophen or ibuprofen for pain.

And stress the importance of follow -up appointments.

Moving on to cardiac surgery, what are the nursing priorities right after the operation?

Post -op care is intensive.

Frequent vitals, especially temperature, report any fever immediately as it could signal infection.

Watch closely for other signs of sepsis.

Chills, sweating, lethargy, changes in consciousness.

Strict aseptic technique with everything is paramount.

Monitor all lines, tubes, drains for infection signs at the sites.

Assess for pain or discomfort.

Irritability, restlessness, changes in HR, BP can be indicators.

Manage pain effectively with meds and document response.

Give antibiotics and antipyretics as prescribed.

Promote rest.

And facilitate parent -child contact as soon as possible for emotional support.

What about home care instructions after cardiac surgery?

Bucks 33 -4 has specifics, right?

Yes, it does.

Key points include avoiding outdoor play for several weeks.

Activities with fall risks like biking for two, four weeks.

And avoiding crowds for about two weeks to reduce infection risk.

Maybe a no added salt diet if ordered.

No new foods for infants right away.

Keep the incision clean and dry.

No lotions or powders until fully healed.

School return is usually around three weeks, maybe starting half days.

No gym class for about two months.

Normal discipline is important.

Remind them about the two -week follow -up.

Avoid routine immunizations and invasive procedures, including dental visits, for about two months.

After that, regular dental visits, every six months after age three, are important and they must tell the dentist about the heart condition for potential antibiotic prophylaxis.

And give them clear guidelines on when to call the doctor persistent cough, fast breathing, cyanosis, vomiting, diarrhea, poor appetite, increased pain, fever, or any incision concerns like redness, swelling, or drainage.

Okay, let's switch gears completely to rheumatic fever.

What is it and why is it a cardiac concern?

Rheumatic fever, RF, is an inflammatory autoimmune disease.

It can affect connective tissues throughout the body, heart, joints, skin, blood vessels, even the brain.

The biggest concern is rheumatic heart disease, which can cause permanent damage to heart valves, especially the mitral valve.

And what triggers it?

It's a delayed reaction to an untreated or partially treated strep throat infection, specifically group A beta -hemolytic strep.

It usually shows up two to six weeks after the throat infection, which might have even seemed mild.

Diagnosis often uses the Jones criteria, looking at a cluster of signs and symptoms.

What are some key findings mentioned in figure 33 -1?

You might see a low -grade fever, maybe spiking in the afternoon.

Lab tests often show elevated ASO titer, evidence of recent strep, high ESR, and high CRP, both indicating inflammation.

Under microscope, you might see ash -off bodies and tissues.

A characteristic rash, erythema marginatum, can occur on the trunk and limbs.

And critically, you must ask about any recent sore throat history.

What are the nursing interventions for rheumatic fever?

Monitor vitals.

Control joint pain with comfort measures like massage, heat -cold as ordered.

Bedrest during the acute febrile phase is important.

Limit activity if there's carditis, heart inflammation.

Assist with giving antibiotics to kill any lingering strep.

Solicilates like aspirin or other anti -inflammatories are used, but usually only after diagnosis is confirmed so they don't mask joint symptoms.

If they develop correa, those involuntary movements implement seizure precautions.

And crucially, reinforce parent teaching about long -term follow -up and the need for antibiotic prophylaxis before dental work or other procedures to prevent recurrence.

Advise them to notify the school nurse about strep outbreaks, too.

Alright, our last major topic.

Kawasaki disease.

What is this condition?

Kawasaki disease, sometimes called mycocutaneous lymph -nose syndrome, is acute systemic inflammatory illness.

The exact cause is unknown, possibly triggered by an infection or toxin in susceptible kids.

The big concern, again, is cardiac involvement, specifically the risk of developing coronary artery aneurysms.

What are the typical signs and symptoms, and how does it progress?

It usually has three phases.

Acute phase, high fever, off to over 102 .2 degrees after 4 -5 plus days.

Red eyes, conjunctival hyperemia without discharge.

Red, dry, cracked lips and throat.

Swollen red hands and feet, maybe a rash, and swollen neck lymph nodes.

Subacute phase, fever resolves but lips crack, skin peels on fingertips and toes, desquamation, joint pain, possible cardiac issues including aneurysms, and high platelet count, thrombocytosis, convalescent phase.

Outward signs resolve, but inflammation might linger and aneurysms need ongoing monitoring.

What are the key nursing interventions for Kawasaki?

Monitor temperature frequently.

Assess heart sounds, rate and rhythm carefully.

Check extremities daily for edema, redness, peeling.

Look at eyes for redness.

Monitor mucus membranes.

Strict INO.

Offer soft bland foods and liquids not too hot or cold.

Daily weights.

Passive range of motion for joints.

Administer high dose aspirin initially for inflammation, then lower dose for anti -platelet effect.

Additional anticoagulants might be needed if aneurysms develop.

And administer IVG intravenous immunoglobulin.

Remember, it's a blood product.

Use precautions.

IVG helps reduce fever duration and the risk of coronary artery problems.

And of course, parent education is vital.

Box 33 -5 has details.

What are the crucial teaching points for parents regarding Kawasaki?

They need to understand follow -up is essential.

Irritability can last for weeks.

Peeling skin, joint pain, stiffness are common during recovery.

Teach them accurate temperature monitoring and when to call if fever returns.

Explain aspirin administration, signs of toxicity, ringing in ears, headache, dizziness, bruising, and the link to Ray's syndrome if given during chicken pox or flu.

Educate on signs of bleeding and cardiac complications.

Chest pain, cool extremities, abdominal pain, vomiting, severe irritability.

Advise activity restrictions on anticoagulants.

Avoid contact sports.

Inform them that live vaccines like MMR and varicella might need to be delayed for up to 11 months after IV -ish.

And give clear reasons to call the provider immediately return to fever, chest pain, difficulty breathing, etc.

Okay, we've covered a ton.

Let's quickly hit the critical thinking scenario.

Child with a known congenital heart defect suddenly has trouble breathing.

What's the move?

Right.

The answer emphasizes close respiratory monitoring and, importantly, placing the child in reverse trendelberg head and upper body elevated.

This decreases the work of breathing.

The reference also notes sleeping with the head elevated and using semi -high fowlers when awake is helpful.

Good.

Finally, let's run through those practice questions quickly to cement things.

Question 337, aortic stenosis sign.

That's three.

Exercise intolerance.

338, incorrect home care statement after cardiac surgery.

Number two, applying lotion or powder to the itchy incision.

Don't do that.

339, rheumatic fever history question.

Number four, asking about a sore throat or fever in the past two months.

340, need for further PDA teaching.

That's one, the idea that the child will just outgrow it.

Not necessarily true for symptomatic PDAs.

341, acute Kawasaki manifestation.

Number three, conjunctival hyperemia, those red eyes.

342, early HF signs in an infant.

Select all that apply.

It's two, irritability.

Three, scalp diaphoresis and four, Tachypnea tachycardia.

343, first action for a tetralogy of phallic cyanotic spell.

Priorities two, knee chest position.

344, HF fluid accumulation indicator.

Number four, that weight gain of one pound in one day.

Big red flag.

345, need for further Didoxin teaching.

That's four, repeating the dose if the child vomits.

No, you don't repeat the dose.

And 346, when to give oxygen for an HF infant.

It's four, when drawing blood procedures like that increase oxygen demand.

Yeah, those questions really hit home.

The key assessment points, interventions and teaching needed for these kids.

Absolutely.

And with that review, we have now covered really all the essential aspects of chapter 33 from Saunders on pediatric cardiovascular disorders.

We went through heart failure, all those different defects, the interventions, cath, surgery, rheumatic fever, Kawasaki, the whole picture.

We definitely did a deep dive.

A lot of information, but hopefully breaking it down this way makes it more manageable and highlights the crucial nursing knowledge you need.

For sure.

Understanding these concepts is just fundamental for providing safe, effective care.

So thank you for joining us on this exploration.

And maybe a final thought for you, the listener.

Consider how recognizing those often subtle early signs we discussed can truly change a child's outcome.

What further questions do you have about how these heart defects interact with the body's amazing, but sometimes overwhelmed ability to compensate something to think about?

Thanks for tuning in.