Chapter 14: Neurological & Sensory Disorders in Children

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Welcome back to The Deep Dive.

We are really glad you're here.

Today, we are tackling an absolute monster of a topic.

And I say that with love, but also with a very healthy dose of respect.

We're diving into the pediatric nervous system.

It is a massive topic.

I think for a lot of nursing students, and frankly, even experienced nurses who don't work in beds every single day, the nervous system is, well, it's the most intimidating body system.

It's complex, it's unforgiving.

And when things go wrong, the stakes are incredibly high.

Exactly.

It's the control center for literally everything else.

So to keep us from spiraling out of control, we are going to be very disciplined today.

We are working off a specific source.

Chapter 14.

Yeah.

Chapter 14, Neurological and Sensory Disorders from Davis Advantage for Pediatric Nursing, Critical Components of Nursing Care, the third edition.

And our mission today is really to translate this dense medical text into something you can actually visualize and use on the floor.

We're going to go in a very logical order.

Starting with the anatomy.

Exactly.

The nuts and bolts, but strictly focusing on how it differs in kids.

Then we'll look at how a child's nervous system grows and develops, specifically those primitive reflexes.

Then we'll get into assessment.

And finally, we'll walk through the specific disorders from congenital issues to infections and trauma.

It's a journey.

So buckle up.

Let's start at the very beginning, anatomy and physiology.

The text breaks the nervous system down into two main players, laid out for us.

You have the peripheral nervous system, or PNS, and the central nervous system, the CNS.

Think of the CNS as the headquarters.

That's your brain and spinal cord.

Right.

The PNS represents the field agents,

the nerves branching out to the rest of the body to gather intel and execute orders.

Okay.

Let's look at the field agents first, the peripheral nervous system.

The text divides this further into the somatic and the autonomic.

Right.

The somatic system is voluntary.

It's what you use when you decide to pick up a coffee cup or, you know, wave at someone you think that you do it.

But the autonomic system, that's the autopilot.

The stuff happening in the background.

Exactly.

It runs the processes that keep you alive without you having to think about them, heart rate, digestion, pupil dilation.

And this is where we get that classic breakdown that every nursing student needs to understand deeply.

The sympathetic versus the parasympathetic.

The old fight or flight versus rest and recuperate.

That's the one.

The sympathetic nervous system is your action dial.

It revs you up.

When a bear walks into the room, your sympathetic system dumps adrenaline, dilates your pupils so you can see better, shunts blood to your muscles so you can run and shuts down digestion.

Right.

Because you don't need to digest a sandwich when you're running for your life.

And the parasympathetic is the exact opposite.

It's the break.

It slows the heart rate, stimulates digestion, allows for waste elimination.

In pediatrics, this balance is crucial because kids can swing between these states very rapidly.

Their autonomic regulation just isn't as mature as in adults.

Simple enough.

Now let's move over to headquarters.

The central nervous system.

The source material highlights the neuron as the central component.

But I really want to talk about myelin.

The text calls it insulation.

Why does that matter so much in a child?

That is the perfect analogy, honestly.

Imagine an electrical wire.

If it's bare copper, the signal scatters, shorts out, or just moves very slowly.

Myelin is the fatty coating around that wire.

It speeds things up.

It allows electrical impulses to travel rapidly and efficiently.

And here is the key insight for peds.

A baby is born with very little myelin.

They aren't fully insulated yet.

Correct.

The process of myelination happens in a specific direction.

The text uses the terms cephalocautal and proximodistal, head to toe, and center to outward.

So that explains the milestones.

Totally.

That is exactly why a baby can lift their head before they can roll over and roll over before they can walk.

They literally cannot control their legs yet because the wiring hasn't been insulated down to that level.

That is such a huge light bulb moment.

It's not just muscle strength.

It's literally nerve conductivity.

Precisely.

And when we talk about disorders later, like Guillain -Barre, that's a disease that strips that insulation away.

But let's stick to the structure for a moment.

Let's take a tour of the brain itself.

We've got the cerebrum, the cerebellum, and the brainstem.

The cerebrum is the big guy, right?

Largest part of the brain.

Yeah, it handles the complex stuff.

Thought, action, memory.

And it's divided into lobes.

This is crucial for assessment because if you know what a lobe does, you can predict what a patient will look like if that specific area is damaged.

Let's run through them quickly so we know what to look for.

Frontal lobe.

The boss.

Emotions, judgment, impulse control, and some motor function.

If a teenager makes a bad decision, we often joke that their frontal lobe is still under construction.

And physiologically, that's actually true.

It's the last part to fully myelinate, often not until the mid -20s.

Parietal lobe.

Sensation.

Interpreting touch, pressure, pain, and temperature.

It helps you understand where your body is in space.

Hearing and memory.

It processes auditory information.

This is also where Wernicke's area sits, which controls language comprehension.

If there is damage here, the child might hear you but not understand a single word you are saying.

And the occipital.

Vision.

It's all about processing what you see.

And we have to mention the concept of contralateral control here.

Right, the crossover effect.

Exactly.

The left hemisphere controls the right side of the body and vice versa.

So if you have a patient with weakness on the left side, you're looking for a problem on the right side of the brain.

That's a fundamental rule of neurology.

Okay, moving down from the cerebrum, we hit the cerebellum.

The coordinator.

It sits under the cerebrum.

It doesn't start the movement, the frontal lobe does that, but the cerebellum smooths it out.

It handles equilibrium and balance.

If a child is stumbling, has a wide base gait, or looks drunk,

we're looking at the cerebellum.

And finally, the brain stem.

The survival center.

This is the privative brain.

It connects the brain to the spinal cord.

It controls the non -negotiables.

Heart rate, breathing, sleep cycles.

If you have significant swelling pressing on the brain stem, you stop breathing.

It's that simple.

It also houses 10 of the 12 cranial nerves.

Speaking of cranial nerves, table 14 to 1 in the text lists all 12.

We probably don't need to read the whole table right this second, but the text suggests it's vital to distinguish which are sensory, which are motor, and which are both.

Definitely.

For a nursing student, you need to know which nerve does what function so you actually know how to assess it.

For example, cranial nerve 1, olfactory,

smell.

Kind of hard to test in a baby.

Cranial nerve 2, optic, vision.

But then you get into the ones that control the eyes.

3, 4, and 6.

Oculomotor, trochlear, and abducens.

These move the eyes.

You test them by having the child follow a toy with their eyes without moving their head.

If one eye lags or doesn't move, you've mapped the problem to those specific nerves.

What about the vagus nerve, cranial nerve 10?

That seems like a major one.

Oh, it's huge.

The word actually means wanderer, because it wanders all through the body.

It handles swallowing and the gag reflex, but also heart rate and digestion.

If a child has damaged vagus nerves, they are a massive aspiration risk.

They might try to swallow and choke.

Checking for gag reflex is essentially checking the vagus nerve.

Before we leave the head entirely, let's talk about the plumbing and the packaging.

Ventricles and meninges.

The ventricles are cavities inside the brain that produce cerebral spinal fluid, or a CSF.

This fluid acts as a cushion.

It absorbs shock.

It also provides nourishment and removes waste.

It flows through the brain and down around the spinal cord.

And the meninges are the wrapper.

The protective layers.

There are three.

And the text gives us the Latin translations, which I love because they describe the layers perfectly.

You have the duramator on the outside.

Which translates to tough mother.

Tough mother.

I just love that.

It's thick, fibrous, and strong.

It's the outer shield.

Then underneath that, you have the arachnoid layer, which is spidery and web -like.

This is where the CSF flows and cushions the brain.

And finally, the pia mater, or soft mother, which is delicate and hugs the brain surface directly following every single fold.

So when we talk about meningitis later in the chapter, we're talking about inflammation of those mothers.

Precisely.

Inflammation in that very tight space between the brain and the skull.

All right.

Moving down the highway.

The spinal cord.

It's protected by the vertebrae.

We've got cervical, thoracic, lumbar, sacral, and costigial sections.

Again, anatomy dictates function.

The higher the injury on the spinal cord, the more function you lose.

The cervical nerves act on the neck, arms, and crucially, the diaphragm.

That's why high neck injuries can cause a person to stop breathing independently.

The lumbar and sacral nerves control the lower body, bowel, and bladder.

That becomes very relevant when we talk about spina bifida later.

Let's shift gears from anatomy to growth and development.

Specifically, reflexes.

The text makes a really interesting point here.

Reflexes are diagnostic tools.

They aren't just cute baby tricks.

They are absolutely diagnostic.

Because reflexes happen at the brain stem or spinal cord level, they tell us about the integrity of the primitive nervous system.

But here's the key concept.

Primitive reflexes, the one you're born with, must disappear.

Why?

Why do they have to go away?

Because the brain is developing from the cortex and frontal lobe, mature and myelinate.

They take over.

They send inhibitory signals down to shut those primitive reflexes off.

If a reflex sticks around too long or persists, it tells us the frontal lobe isn't doing its job.

It's a red flag for things like cerebral palsy.

Okay, let's unpack table 14 -3.

These are the primitive reflexes we need to look for.

Let's start with the moro.

The startle reflex.

If you suddenly move the baby or make a loud noise, their back arches, the head goes back, and the arms extend out and then curl back in like they're hugging a tree.

It's dramatic.

It should be gone by six months.

Then there's rooting and sucking.

Survival reflexes.

Touch the cheek, they turn to feed.

That's rooting.

Put something in the mouth, they suck.

Rooting goes away around three to four months.

Sucking takes a bit longer, up to a year, but it becomes voluntary before then.

If a two -year -old still automatically sucks on anything that touches their lips, that's abnormal.

The babinski.

This one always confuses people because it's the exact opposite in adults.

Right.

In an adult, a positive babinski is bad.

In a baby, it's perfectly normal.

You stroke the sole of the foot upward.

The big toe should bend back and the other toe should fan out.

That's a positive babinski.

It should disappear by about nine to 12 months or right around when they start walking.

If you do that to an adult and their toes fan out, that indicates a central nervous lesion.

Hallmark grasp.

Put your finger in their palm, they grab it.

Strong.

Gone by three months.

If it stays, the child can't develop voluntary release of objects.

They can't drop a block because their hand automatically grabs it.

Intraction.

Pull to sit.

You hold the baby's hands and pull them up from lying down.

They should try to lift their head to keep it in line with the body.

If the head just flops back completely after six months, that's head lag and it's a significant sign of hypotonia or neuromuscular issues.

That transitions us perfectly into assessment.

You're looking at a child.

How do you assess their neurological status?

The text mentions the Glasgow Coma Scale or GCS in table 14 to 4.

This is the gold standard for level of consciousness.

It scores three things.

Eye -opening verbal response and motor response.

It's a point system.

Right.

The perfect score is 15.

A score of eight or less is generally defined as comatose.

A score of three is totally unresponsive.

You literally can't get a zero.

Even a rock gets a three.

So, eye -opening.

Are they looking at you spontaneously?

That's four points.

Do you have to yell their name?

That's three.

Do you have to pinch them to get them to open their eyes?

That's two.

Exactly.

And motor response is very telling.

Do they obey a command?

Squeeze my fingers.

That's six points.

But if they can't do that, do they pull away from pain or do they posture?

The text mentions decorticate and decerebrate posturing.

Describe those for us because those words trip up a lot of students.

Decorticate is flexion.

Arms curled in toward the core, hands clenched, legs turned in.

Think towards the cord.

This indicates damage to the cerebral cortex.

Deserebrate is extension.

Arms stiff at the sides, wrists flexed out, jaw clenched.

Deserebrate is usually worse, indicating brainstem damage.

If a child goes from decorticate to deserebrate, they are herniating.

They're getting worse.

Aside from GCS, physical exam priorities include head circumference.

Critical in infants.

The skull bones aren't fused yet.

We measure the head at the largest diameter just above the eyebrows.

We're looking for microcephaly, a small head, which implies the brain isn't growing, or macrocephaly, a large head, which could mean hydrocephalus.

But there is a really important, safe, and effective nursing care note here regarding cultural competence.

Yes, and this is so important to remember.

The text notes that average head circumference varies by population.

For instance, infants from Southeast Asia may statistically have slightly smaller average head circumferences compared to standard Western growth charts.

You have to use the appropriate chart if available, but more importantly, look for the trend.

Is the child dropping off their specific curve?

A single number means much less than the overall trajectory.

What about muscle tone?

We look for hypertonia stiffness, spasticity.

The muscles feel tight and resist movement, or hypertonia floppiness, like a ragdoll.

If you lift a baby and they feel like they're flipping through your hands, that's hypertonia.

And skin?

Why are we looking at skin for a brain problem?

Neurocutaneous lesions.

We are checking the skin for clues about the brain.

Caffeolet spots those light brown birthmarks, or tufts of hair at the base of the spine.

Why the connection there?

Embryology.

The skin and the nervous system actually develop from the exact same tissue layer in the embryo, the ectoderm.

So, anomalies on the skin often flag neural issues deeper down.

Now, assessing development isn't just about reflexes.

It's about skills.

The text mentions tools in Table 14 of 5, like the Denver the Second or the Ages and Stages Questionnaire, the ASQ.

These are screening tools.

They check domains.

Fine motor, gross motor, language, social skills.

But the text gives a great piece of clinical judgment advice.

Watch the child play.

Just watch them before doing anything else.

Yes.

Before you touch them.

Before you scare them with a stethoscope.

Watch them manipulate a toy.

Do they transfer it from hand to hand?

Do they pinch it?

Do they look at you for approval?

Play is the work of the child, and it's the best way to assess their neurological function naturally.

A child who sits there staring into space is a very different assessment than one banging of a lock on the table.

Let's move into the specific disorders now.

We're starting with congenital abnormalities, specifically neural tube defects, or NTDs.

This takes us back to that first month of pregnancy.

The neural tube, which becomes the brain and spinal cord, is supposed to zip close by the 28th day of gestation.

It zips up and down.

If it doesn't zip close completely, you get an NTD.

And the text is very clear on the cause and prevention.

Folic acid.

400 micrograms daily for all women of childbearing age.

Note, I said childbearing age, not just pregnant women.

Since the tube closes at day 28, most women don't even know they are pregnant yet.

By the time the pregnancy test is positive, the neural tube is already formed or malformed.

That's why the supplementation needs to happen before conception.

Let's look at the specific defects.

First, an encephaly.

This one is tragic.

The upper part of the neural tube fails to close.

Most of the brain and skull simply do not develop.

The baby is born without a forebrain.

It is usually incompatible with life.

These babies may live for a few hours or days, but usually no longer.

The nursing care here is focused entirely on comfort and supporting the grieving family.

Then there's encephalocely.

That's a herniation or protrusion of the brain and meninges through defect in the skull.

It looks like a sack sticking out of the head, often at the back of the neck or sometimes near the nose.

This requires surgical repair, and the prognosis really depends on how much actual brain tissue is in that sack.

And the most common one we talk about in PEDS, spina bifida.

Spina bifida basically means split spine.

The vertebrae didn't fuse.

There are three levels you need to understand.

First is spina bifida occulta.

Occulta meaning hidden.

Right.

The bone is split, but the spinal cord and nerves are fine.

There's no sack sticking out.

You might just see a dimple, a tuft of hair, or a small fatty lump on the lower back.

It's often an incidental finding on an x -ray for something completely different.

Usually there are no symptoms at all.

Then we have spina bifida cystica, which involves a sack.

And this is split into meningo shell and myelomeningocell.

This is the most important distinction for a student.

In a meningocelli, the sack sticking out contains meninges and CSF, but no nerves.

The spinal cord is still where it should be.

These kids usually have less disability, though they still need surgery to close the defect.

But in myelomeningocelli, the sack contains the meninges, fluid, and the spinal cord and nerves.

Everything is displaced into that bubble on the back.

This is the most severe form.

It causes paralysis, bowel and bladder incontinence, and sensory loss below the level of the defect.

The text highlights a critical component of nursing care here, protecting the defect.

You have a baby born with an open sack on their back.

What do you do?

That sack is the only thing between the spinal cord and the outside world.

Infection is the enemy.

If that sack ruptures or gets infected, you have meningitis and potential death.

You must keep it covered with a sterile dressing soaked in warm sterile saline.

You have to keep it moist so it doesn't crack or dry out.

On the tummy, you absolutely cannot lay this baby on their back.

You position them with hips flexed and legs abducted like a frog to minimize tension on the sack.

You feed them in this position.

You change diapers with extreme care to keep stool away from the sack.

And there's a safety note about allergies for these kids.

Latex.

Children with spina bifida have a huge risk of developing latex allergies.

Think about it.

They have mucosal to latex gloves and catheters from day one of life.

Frequent surgeries.

Frequent straight caths for bladder management.

The sensitization rate is incredibly high.

You place them on strict latex precautions immediately.

No latex gloves.

No rubber balloons from the gift shop.

Connected to this, the text mentions Chiari malformation.

This is structural.

Because of the spinal defect, the brain sits lower.

The cerebellum pushes down.

It herniates into the spinal canal.

It's too crowded in the skull.

Type 1 might not show up until adulthood with headaches.

Type 2 is almost always associated with spina bifida, specifically myelomeningosal, and is much more severe.

It can compress the brainstem and cause breathing issues.

And often these neural tube defects lead to our next topic, hydrocephalus.

Water on the brain.

But really it's CSF.

It's a plumbing issue.

Either you're making too much fluid, which is rare, or more commonly you can't drain it.

It gets blocked, usually because of that Chiari malformation or other structural issues.

The ventricle swell and intracranial pressure, or ICP, skyrockets.

And symptoms depend on the age, right?

Because babies have those soft spots, the fontanels.

Correct.

In an infant, the skull can actually expand.

So you see rapid head growth.

If you measure the head and it jumps percentiles, worry about hydrocephalus.

The fontanels bulge.

They feel hard and tense.

And you see sun setting eyes.

Describe that for someone who hasn't seen it.

The pressure in the brain drives the eyes downward.

They look like the sun going down below the horizon.

You see the white sclera above the iris.

It's a very distinct, alarming look.

And the cry.

A high -pitched, shrill cry.

Not a normal hungry cry.

A pain cry.

That's a classic sign of neurological irritation.

What about an older child?

Their skull is fused.

It can't expand.

So the pressure has nowhere to go.

The brain gets squeezed.

They get severe headaches, especially in the morning when they wake up.

Why morning?

Because when you lay flat at night, ITP naturally rises slightly.

If you already have hydrocephalus, that creates a crisis.

They might vomit, which briefly relieves the pressure so they actually feel better after throwing up.

Also look for blurred vision and changes in school performance.

The treatment is a VP shunt.

A ventricular peritoneal shunt.

It's a tube that runs from the ventricle in the brain, under the skin behind the ear, down the neck and chest, and dumps into the abdomen, the peritoneum, where the fluid is reabsorbed by the body.

But shunts aren't a cure -all.

They can fail.

The text lists specific home care instructions and complications.

Infection is the big one.

Usually within the first few months after placement.

Look for fever.

Redness along the shunt tract.

You can literally see a red line down the neck.

Malfunction means the plumbing is clogged or kinked, so the hydrocephalus symptoms come back.

Vomiting.

Headache.

Irritability.

And overdrainage can happen?

Yes.

If it drains too fast, the ventricles collapse.

That causes a different kind of headache that gets worse when they stand up.

There is a specific sign mentioned for checking a fluid leak.

The halo sign.

Yes.

If you suspect CSF is leaking from a surgical site or the nose or ears after trauma, look at the drainage on the bed linens.

CSF separates from blood.

You'll see a red spot of blood in the center and a lighter yellowish ring around it.

A halo.

That indicates CSF.

That is a medical emergency because the barrier to the brain is breached.

Moving on to something that affects whole -family sleep disorders.

Sleep is crucial for brain development.

The text covers a few types.

Obstructive sleep apnea, or OSA, is surprisingly common in kids,

usually due to big tonsils or obesity.

If a kid is snoring loudly, breathing through their mouth, or you hear them stop breathing at night, they need an evaluation.

It leads to poor school performance because they are exhausted.

The treatment is often a T in atonsillectomy and adenoidectomy.

Then we have parasomias.

Confusing behaviors.

Night terrors versus nightmares.

How do we tell them apart?

It's all about the timing and the memory.

Night terrors happen in non -REM sleep, usually early in the night.

The child screams, looks terrified, eyes might be open, heart racing, but they are not awake.

If you try to comfort them, they might push you away.

And the key, they won't remember it the next day.

The parents are traumatized.

The kid is fine.

You just keep them safe and let it pass.

And nightmares.

Occur in REM sleep, usually later in the night or early morning.

The child wakes up fully, is scared, wants comfort, and remembers the scary dream.

They can tell you about the monster.

They need reassurance to go back to sleep.

The text also mentions restless leg syndrome in kids.

An irresistible urge to move the legs.

It keeps them awake, often linked to genetics or low iron levels.

So before you assume it's behavioral, check the ferritin levels.

Let's shift to a major section, seizure disorders or epilepsy.

This is a big one.

A seizure is essentially an electrical storm in the brain.

Neurons start firing uncontrollably.

We classify them by where they start.

Generalized, meaning the whole brain,

or partial, meaning focal, or one spot.

Let's start with generalized.

The classic grand mal or tonic -clonic.

This is what movies show.

Tonic means stiffening.

All muscles contract.

The child falls.

Clonic means jerking.

The rhythmic contraction and relaxation, they lose consciousness.

They might bite their tongue or lose bladder control.

What about absent seizures?

These are tricky.

Very tricky.

They used to be called petit mal.

The child just stares.

It looks like daydreaming.

But if you wave your hand or call their name, they don't respond.

It lasts maybe 10 seconds, but it can happen 50 or 100 times a day.

These kids often get labeled as having ADHD or being spacey before they get diagnosed.

It severely affects learning because they are constantly logging off.

A tonic.

Drop attacks.

Yeah.

Sudden loss of muscle tone.

The child just collapses to the floor like a puppet whose strings were cut.

These kids often need to wear helmets because they fall face first without putting their hands out.

Then we have partial or focal seizures.

These start in one specific area.

If it's a motor strip for the hand, just the hand might jerk.

If awareness is preserved, it's a simple partial.

If they're confused or unaware, it's a complex partial.

They might do automatisms, lip smacking, picking at clothes, wandering aimlessly.

The text lists some specific syndromes.

Febrile seizures are the most common.

And usually the most benign.

They are triggered by a rapid spike in temperature, usually viral.

It's terrifying for parents to see their baby seize, but they usually stop on their own and don't cause long -term damage.

You treat the fever and the underlying infection.

It does not mean the It happens in babies three to eight months old.

It looks like a sudden jackknife motion.

The baby crunches forward, arms out.

It happens in clusters.

It is associated with poor developmental outcomes and intellectual disability.

It needs aggressive treatment immediately.

And Lennox gesto.

A severe form of epilepsy with multiple types of seizures, a tonic, tonic absence that are very resistant to medication.

These children usually have cognitive dysfunction.

What if a seizure doesn't stop?

Status at ellipticus.

Defined as a seizure lasting more than five minutes or repeated seizures where the patient doesn't wake up in between.

This is a medical emergency.

The brain is frying.

Oxygen and glucose are being depleted.

Neurons begin to die.

You need IV meds immediately.

Speaking of meds, table 14 -7 is a laundry list.

Diazepam, valproic acid, finitoin.

The key takeaways for students' diazepam, which is Valium or lorazepam, are your rescue drugs.

They stop the seizure right now.

You can give rectal diazepam, diastat at home.

Maintenance drugs prevent them.

Finitoin or dilantin requires careful monitoring of blood levels because it has a narrow therapeutic window.

It causes gum overgrowth, gingival hyperplasia.

So dental hygiene is key.

And valproic acid.

Can cause liver toxicity and bleeding issues.

And the golden rule for all antiepileptics.

Never stop them abruptly.

That is the number one trigger for status epilepticus.

If a teen decides to stop their meds because they want to drink alcohol or they don't like the side effects, they can end up in the ICU.

Also, monitor for mood changes, depression and suicidality are side effects of many of these drugs.

Let's talk about the nursing interventions.

You walk into a room and a child is seizing.

What is your absolute priority?

Safety.

Airway.

Turn them to the side so they don't choke on saliva or vomit.

Do not put anything in their mouth.

No tongue blades, no spoons.

That's an old myth and it causes injury.

Do not restrain them.

You'll break a bone or tear a muscle.

Just cushion the head, clear the furniture away and time the seizure.

Why is timing so important?

Because the clock dictates the treatment.

If it hits five minutes, we are in status epilepticus protocol.

We need meds.

If it's two minutes, we usually just observe.

And after the postictal state.

They will be exhausted.

The brain has run a marathon.

They might be confused, sloopy or have a headache.

Let them sleep.

Reorient them gently when they wake up.

Don't force them to eat or drink immediately.

The text also mentions a seizure action plan.

This is essential for school.

It tells the teacher or school nurse exactly what to do.

If Johnny has a seizure, do X, Y and Z.

Give diastat if it lasts more than five minutes.

Call 911.

It empowers the community to keep the child safe.

Okay, let's unpack headaches and urocutaneous syndromes.

We touched on skin signs earlier.

Neurofibromatosis type 1 is a genetic condition.

We look for cathiolase spots.

The criteria are specific.

Six or more spots, larger than 0 .5 centimeters, which is about the size of a pencil eraser.

If you see that, they need a workup.

They can grow benign tumors, neurofibromas on their nerves, which can cause pain or damage depending on where they grow.

And ataxia telangiectasia.

A mouthful.

Ataxia means poor coordination.

Telangiectasia refers to tiny spider veins often seen in the whites of the eyes or on the ears.

It's a progressive degenerative disease.

These kids lose the ability to walk and eventually need wheelchairs.

It also affects the immune system, making them prone to infections.

Sturgeon wrapper.

Look for a facial port wine stain, a flat reddish purple birthmark covering part of the forehead and eye area.

It's associated with angiomas or tumors in the brain on that same side.

It causes seizures, developmental delays, and glaucoma.

Movement disorders.

Ticks versus Tourette's.

Ticks are sudden, repetitive, non -rhythmic movements or sounds.

Blinking, shoulder shrugging, throat clearing.

They are often made worse by stress.

Tourette's syndrome has a specific definition.

You must have both motor tics and vocal tics present for more than one year.

Treatment.

Usually supportive.

We treat it if it's interfering with life or causing social stress.

We use behavioral therapy or sometimes medications like alpha agonists like clonidine.

And pediatric stroke.

We usually think of stroke as an older person's disease.

But it happens in kids.

The causes are different.

In adults, it's cholesterol and high blood pressure.

In kids, it's often sickle cell disease, where clumping cells block vessels or congenital heart defects, where clots form in the heart and travel to the brain.

The signs are similar though.

One

Let's dive into infections.

Meningitis.

This is a huge topic for exams and a massive clinical red flag.

Inflammation of the meninges.

Can be viral or bacterial.

Bacterial is the killer.

Symptoms include severe headache, photophobia or light sensitivity, vomiting, and fever.

But the hallmark is new child rigidity.

A stiff neck.

The child cannot touch their chin to their chest.

The text details two specific signs to test for this.

Kernigs and Brudzinski's.

Learn these.

Kernigs sign.

The child lies flat.

You lift their leg and bend the knee at 90 degrees.

Then you try to straighten the lower leg.

If it hurts or the hamstring spasms and resists, that's positive.

Brudzinski's sign.

You lift the child's head while they are lying flat.

If their knees and hips automatically buckle and pull up, that's positive.

Both indicate meningeal irritation.

To diagnose, we need a lumbar puncture.

An LP.

Spinal tap.

We need the fluid.

The nurse's role is critical here for positioning.

You have to hold that child perfectly still, usually curled up on their side in a fetal position or sitting hunched over, to open up the spaces between the vertebrae so the doctor can get the needle in.

If the child moves, there is a major risk of injury.

And we look at the CSF analysis.

Bacterial versus viral.

Bacterial is the bad one.

The fluid will look cloudy or milky because it's full of white blood cells and bacteria.

Glucose will be low because the bacteria are eating the sugar.

Protein will be high.

Viral meningitis usually presents with clear fluid and normal glucose.

Isolation precautions.

Trompet.

As soon as you suspect it, mask up.

The patient gets a private room.

They stay on precautions for 24 hours after antibiotics start.

There's a red flag alert in the text regarding a specific rash.

If you see purpuric rash purple spots that look like bruises but don't blanch or turn white when you press them, combined with fever, think meningocosemia.

That is,

meningitis sepsis.

It moves incredibly fast.

It causes shock and organ failure.

It can kill in hours.

This is a medical emergency requiring immediate resuscitation.

Other infections mentioned.

Encephalitis and acute flaccid myelitis.

Encephalitis is inflammation of the brain tissue itself, not just the lining.

Often viral, like from mosquitoes carrying West Nile.

The key difference is mental status changes, confusion, lethargy, personality changes.

Acute flaccid myelitis, or AFM, is rare but scary.

It's polio -like.

Sudden limb weakness, loss of tone.

It attacks the spinal cord gray matter.

It's been rising recently, linked to enteroviruses.

And Zika virus.

Congenital issue.

If mom gets infected by a mosquito during pregnancy, the virus attacks the developing neural stem cells.

The baby can be born with severe microcephaly and brain damage.

Prevention is mosquito control.

Let's move to neuromuscular disorders.

These affect the muscles and the nerves controlling them.

Cerebral palsy, CP.

CP is the most common permanent physical disability in childhood.

It's caused by brain damage before, during, or after birth.

Hypoxia, lack of oxygen, is a common cause.

It is non -progressive, meaning the brain damage itself doesn't get worse.

But the symptoms might change as the child grows and muscles tighten.

There are types.

Spastic is the most common.

Spastic means stiff, tight muscles due to hypertonia.

You'll see a scissor gate where the legs cross over each other when walking.

Disconnected CP involves involuntary writhing movements called athetosis.

Ataxic involves balance issues and shaky movements.

Muscular dystrophy, specifically Duchenne DMD.

This is genetic.

X -length recessive, so it almost exclusively affects boys.

They're missing a protein called dystrophin, which holds muscle cells together.

Without it, muscles break down and turn to fat and scar tissue.

What is the hallmark sign for this?

Gower sign.

It's incredibly specific.

The child is on the floor.

To stand up, they have to use their hands to walk up their own legs.

They push on their shins, then knees, then thighs.

Their thigh and hip muscles are too weak to lift them conventionally.

It's progressive.

Yes.

It's heartbreaking.

They usually lose the ability to walk by age 12.

Eventually, it affects the heart and breathing muscles.

Life expectancy has improved with ventilation and cardiac care, but it is life -limiting, usually into the 30s.

Myasthenia gravis.

Autoimmune.

The body attacks acetylcholine receptors at the neuromuscular junction.

The signal gets sent, but the muscle doesn't receive it.

The symptom is muscle fatigue that gets worse with activity and better with rest.

Look for ptosis -drooping eyelids.

Spinal muscular atrophy, SMA.

A genetic degeneration of the anterior horn cells in the spinal cord.

It causes wasting of voluntary muscles.

Type 1, Rydnick Hoffman is the most severe.

These babies are very floppy and usually die infancy from respiratory failure because they can't breathe or swallow.

There are new gene therapies that are changing this landscape, but early detection is key.

And Guillain -Barre syndrome.

This is an autoimmune response, often triggered by a viral infection or sometimes a vaccine.

It attacks the myelin sheath in the PNS.

The key feature is ascending paralysis.

It starts in the feet with tingling and weakness and moves up the legs to the trunk.

Why is that so dangerous?

Because if it moves up high enough, it hits the intercostal muscles and the diaphragm.

The child stops breathing.

You have to monitor respiratory status religiously.

The good news is, it's usually temporary.

With treatment like IVEG or plasmapheresis, the myelin regrows and function returns, but it's a slow process.

Descending recovery, which is the reverse of how it started.

We are almost to the end.

Traumatic brain injury, TBI, concussion.

A mild TBI.

Confusion, amnesia, headache, maybe vomiting.

The most important thing is rest.

Physical and cognitive rest.

No school, no video games, no texting.

The brain needs to heal.

Because of second impact syndrome.

Right.

If a child gets a second concussion before the first one is fully healed, the brain loses its ability to auto -regulate blood flow.

It swells rapidly and catastrophically.

It has a 50 % mortality rate.

This is why return to play protocols in sports are so strict.

And sadly, we have to mention non -accidental trauma, shaken baby syndrome.

As a nurse, you are a mandatory reporter.

If the injury doesn't match the story, like a two -month -old supposedly rolling off the bed when they physically can't roll yet, you have to suspect abuse.

Retinal hemorrhages, bleeding in the back of the eyes are a classic sign of violent shaking.

The brain slams back and forth, tearing bridging veins.

Before we completely wrap up, let's do the case study from the text.

Isaac.

Right.

Isaac is a 15 -month -old.

Healthy kid?

Develops a sudden high fever, 104 .8 degrees.

Mom gives Tylenol.

15 minutes later, his eyes roll back.

He gets stiff and jerks for two minutes.

Extremely scary for Mom.

Terrifying.

Yeah.

But when he gets to the ER, he's awake, playful, and his neurological exam is completely normal.

This is a classic fibural seizure.

The rapid spike in temperature triggered it.

What's the main takeaway for the listener here?

Reassurance.

The seizure stopped.

He's back to normal.

We don't need a huge workup of the CT or MRI if the exam is normal.

We treat the fever, check for the source of infection like an ear infection, and educate the parents that this doesn't mean he has epilepsy.

It likely won't happen again, or if it does, it will be with another fever.

We made it.

That was the nervous system in a nutshell.

It went from the cellular level to the societal level.

It's a lot to process.

If you take one thing away from this deep dive.

Astute assessment saves lives.

The nervous system is unforgiving.

Catching that lagging reflex, noticing the stiff neck, measuring that head circumference correctly.

These aren't just boxes to check.

They are the early warning signs that allow us to intervene before permanent damage occurs.

You are the detective.

Well said.

To all the nursing students out there, keep studying.

You can do this.

Here's something to mull over before our next session.

If a child's brain is so plastic and adaptable, how might environmental enrichment alter the course of these congenital conditions?

Something to explore on your own.

This has been a deep dive from the Last Minute Lecture Team.

Thanks for listening.

Take care.