Chapter 17: The Toddler: Growth, Development & Care

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Welcome back to the Deep Dive.

Today we are opening up a file that I think strikes a very chord with anyone who has ever been a parent, an aunt, an uncle,

or frankly,

anyone who has ever sat near a screaming child on an airplane.

Oh yeah.

We're talking about the toddler.

It is a stage of life that is impossible to ignore.

We are diving into chapter 17, the toddler, from the intro to maternity and pediatric nursing text.

And I have to say, reading through these notes, it feels like we are analyzing a hurricane.

That's a good way to put it.

We're looking at the period between one and three years old.

And my first question to you is,

is this just chaos or is there a method to the madness?

There is absolutely a method, but it often feels like chaos because of the sheer magnitude of the transition.

In nursing, we look at infancy as a time of total dependence.

Right.

The baby needs you for everything.

Everything.

The toddler stage is the violent, messy, beautiful struggle for independence.

That's a strong word, violent.

Well, ideally not physically violent though.

You know, toddlers do hit.

Fair point.

I mean it in the sense of a radical break.

The child is realizing for the first time, I have a separate entity from my mother.

That is a massive psychological earthquake.

Wow.

And that earthquake explains almost all the behavior that drives parents crazy.

We usually brand this the terrible twos.

And I feel like that label does a lot of heavy lifting.

It really does.

It implies the kid is just being a jerk.

Right.

And that is exactly why we need to reframe it today.

Our mission, especially for the nursing students listening, is to stop seeing a terrible child and start seeing a child who's doing exactly what they're supposed to do.

Okay.

They aren't being difficult for sport.

They are fighting for autonomy.

They are testing the walls to see if they hold up.

So if I have a toddler who is perfectly well behaved, never says no and sits quietly in the corner.

As a nurse, I would be far more worried about that child than the one throwing a tantrum in the cereal aisle.

Really?

Yes.

The compliant child might be delaying that necessary work of individuation.

The screamer, they are right on schedule.

Okay.

That is a comforting thought, I think.

So here's our roadmap for the hour.

We are going to break down the physical changes.

Which are slowing down a lot.

Right.

Spoiler alert.

Slowing down significantly compared to the infant stage.

We're going to look at the explosion of language, the psychology of the no.

A very powerful word.

And the intense work of toilet training.

And finally, we have to talk about safety because this is statistically the most dangerous time in a human being's childhood.

Absolutely.

Injury prevention is the number one priority for this age group.

Let's start with the hardware.

The body.

In our last deep dive on infants, we talked about this rocket ship growth trajectory.

Doubling birth weight by six months, tripling by a year.

Does that pace keep up?

As if it did, we'd all be eight feet tall by kindergarten.

Exactly.

The biological breaks pump hard during the toddler years.

That rapid, you know, exponential growth of infancy levels off into a steady linear climb.

Give us the numbers.

What does slowing down actually look like?

Well, by one year, the infant has tripled their birth weight.

By two years, they've usually quadrupled it.

Okay.

But if you look at the rate, a toddler generally gains only about 1 .8 to 2 .7 kilograms per year.

That's it.

Yeah.

That's roughly four to six pounds in an entire year.

That feels like nothing compared to the infant phase.

It's a huge drop off.

And height wise, they grow about 10 centimeters or four inches per year.

But there is a fascinating rule of thumb here that pediatric nurses love.

Oh.

If you want to know how tall a child will be when they're fully grown, look at them on their second birthday.

The crystal ball method.

Pretty much the height of a two year old is roughly half of their potential adult height.

No way.

It's not perfect, but it's surprisingly accurate.

So if your two year old is three feet tall, you can expect a six foot adult.

That is wild.

I'm doing the math on my nieces and nephews right now.

But beyond just the measurements, the shape of the kid changes, right?

Absolutely.

They have a very distinct silhouette.

They do.

We call it the toddler lordosis look.

Lordosis sounds like a medical condition you'd need surgery for.

It sounds serious, but it's actually a normal spinal curvature for this age.

Toddlers have a sway back.

Their lower spine curves in, which pushes their belly out.

Right.

Combined with the fact that their abdominal muscles are still incredibly weak and haven't tightened up yet, the contents of the abdomen just protrude.

So the pot belly isn't necessarily fat.

Not usually.

That's a huge point of parent education.

They often ask, is he eating too much?

He looks bloated.

We have to explain, no, that's just anatomy.

He doesn't have a six pack yet.

Not even close.

The muscles are weak.

The spine is curved.

The head is still relatively large, though its growth has slowed down compared to the body.

Right.

The head grew so fast in infancy, and now the rest of the body is playing catch up.

Exactly.

The chest circumference starts to grow.

By the time the child passes age two, the chest becomes larger than the abdomen.

The abdominal muscles tighten.

The spine straightens out a bit.

And they start to look leaner.

Yeah.

They lose that squat look.

Okay.

Let's look under the hood.

Organ systems.

I know myelination was a huge topic in infancy.

Is that finished?

It reaches a critical finish line during this stage.

Myelination, as a reminder, is the process of coating the nerves in a fatty sheath myelin,

which acts like insulation on a wire.

It speeds up the signal.

Dramatically.

Yeah.

Without myelin, the signal from the brain to the muscle is slow and static filled.

By age two, myelination of the spinal cord is practically complete.

And this is the physiological unlock for one of the biggest milestones in parenting.

Prodi training.

Connect those dots for us.

Why does nerve coating matter for using the toilet?

Because control of the anal and urethral sphincters, the muscles you squeeze to hold it in, is voluntary.

Okay.

It requires a clear, fast signal from the brain.

Until the spinal cord is myelinated to that level, the child physically cannot control those muscles.

So if a parent is trying to potty train an 18 -month -old whose myelination isn't done?

They are banging their head against a wall.

It is not that the child is stubborn.

It is that the hardware is not installed.

There's a wiring issue.

Exactly.

The brain might say hold it, but the message doesn't get to the sphincter in time.

It is physiologically impossible.

That is such a crucial takeaway for nursing students.

You can't force biology.

What about other systems?

Senses?

Vitals?

Vision is sharpening.

They have binocular vision established by 15 months, meaning both eyes work together for depth perception.

Got it.

Visual acuity is about 2040 by age 2.

Not quite 2020 yet.

No.

But good enough to spot a cookie from across the room.

The important things.

As for vital signs, because the growth rate is slowing, the metabolic demand drops.

So the heart rate slows down to a range of 70 to 110 beats per minute.

Which is much taller than the infant racing heart.

Exactly.

Respirations slow to about 25 breaths per minute.

Blood pressure creeps up a little, averaging 90 over 56.

And importantly, their thermal regulation matures.

Instants are terrible at regulating temperature, right?

Right.

Infants can't shiver effectively, but toddlers can.

Their capillaries can constrict to save heat and dilate to release heat.

They're much more durable in that sense.

But there's a paradox here in the notes.

You say they're more durable, their skin is tougher, they have more immunity, but they seem to live at the doctor's office with ear infections.

What gives?

It's an anatomical design flaw of early childhood.

A design flaw.

It's all about the eustachian tube.

This is the tube that connects the middle ear to the back of the throat.

Okay.

In adults, that tube angles downward, so if you get fluid in your ear, gravity helps it drain into the throat.

Simple plumbing.

Right.

But in toddlers, that tube is shorter,

and critically, it is straighter.

It's almost horizontal.

So gravity doesn't help.

Gravity does nothing.

If a toddler gets a cold or a throat infection, the bacteria can travel straight across that horizontal highway into the ear.

Oh, wow.

And because the tonsils and adenoids, which are lymph tissue, are naturally enlarged during this period to fight infection, they can block the opening of the tube.

Creating a trapped pool of fluid.

Exactly.

That is otitis It's incredibly common, and it's largely due to that flat geometry.

Yeah.

As they grow, the face elongates, the tube angles down, and ear infections usually become less frequent.

All right.

Let's move from the body to the mind.

This is where the personality really starts to show up.

We are entering the realm of Eric Erickson's psychosocial development.

The stage of autonomy versus shame and doubt.

This is the headline for the entire chapter.

Autonomy versus shame and doubt.

It sounds very dramatic for a two -year -old.

It feels dramatic to them.

The core conflict here is simple.

The toddler wants to do things themselves.

Me do it, is the battle cry.

Right.

They want to put on their own socks, feed themselves, open the door.

They are testing their own power.

And the conflict comes when they fail.

Or when we don't let them try.

If a parent is constantly impatient doing everything for the child because it's faster, or shaming the child for making a mess, the child develops a sense of shame and doubt about their abilities.

They stop trusting themselves.

Exactly.

So the goal of the nurse is to help parents navigate this without crushing the kid's spirit.

Exactly.

And this leads directly to negativism.

The constant use of the word no.

Yes.

My friend's kid says no, even when he means yes.

He'll say no while reaching for the ice cream.

That is classic.

Yeah.

The word no is a tool.

It's a way for the child to assert that they are separate from the parent.

So it's about identity.

I can refuse you, therefore I am my own person.

It's a power trip.

But practically speaking, parents need to get things done.

How do you handle a kid who just says no to getting dressed?

The text suggests a very specific strategy.

Limited choices.

Walk us through that.

You never ask a yes or no question if you aren't prepared to accept no as the answer.

Good rule for life, actually.

It is.

Don't say, do you want to get dressed now?

Because they will say no, and then you have to force them, which violates their autonomy.

So what do you say?

You say, do you want to wear the red shirt or the blue shirt?

You change the battlefield.

Exactly.

You give them control over the details, but you keep control of the goal.

They feel powerful because they chose the red shirt.

You feel successful because they're wearing a shirt.

It's genius.

It respects their need for autonomy while maintaining boundaries.

That is parenting gold.

Another psychological trait mentioned is ritualism.

This is the kid who needs the green cup, not the blue cup, or the world ends.

Yes, and it can look like obsessive behavior to an adult.

But think about the toggler's reality.

The world is huge, loud, and unpredictable.

They have very little control over where they go or what they do.

Rituals keeping things exactly the same provide a sense of security.

It's an anchor.

It is.

If you change the routine, you pull up the anchor and they feel a drift.

That's why the meltdown happens.

And nurses need to respect this.

Especially in the hospital.

If a hospitalized toddler has a specific bedtime ritual or a specific blanket, we need to honor that.

It's a coping mechanism, not a bad habit.

Let's shift to cognitive development.

How are they thinking?

We're looking at Jean Piaget now.

We are moving from the sensory motor phase into the preconceptual phase.

This is the age of trial and error.

They are little scientists.

Meaning they experiment.

Constantly.

What happens if I drop this spoon?

It makes a noise.

Mom picks it up.

Interesting.

What happens if I drop it again?

They're testing cause and effect.

Right.

And they're solidifying object permanence.

The idea that things exist even if you can't see them.

Right.

If you put cookies in the cabinet and close the door, the infant might forget they exist.

The toddler knows they're still there.

And we'll try to figure out how to open the door.

They also start understanding spatial relationships.

Fitting square pegs into square holes is not just a toy.

It's cognitive mapping.

They're learning how shapes and sizes fit into the world.

Okay.

But the danger here is that their understanding of cause and effect is immature.

How so?

Well, they might understand that pulling on a tablecloth brings the cookies closer.

That's a logical cause and effect.

Sure.

But they lack the judgment to realize that the hot pot of coffee on the table is also coming down.

They have the mechanics without the risk assessment.

Which is a terrifying combination.

Before we get to safety, I want to touch on separation anxiety.

Does that go away after instancy?

No, it evolves.

It typically progresses through three stages,

protest, despair, and detachment.

Those are heavy words.

They are.

Protest is the loud crying when the parent leaves.

Pretty straightforward.

Right.

Despair is when the child goes quiet and looks sad.

This is actually more concerning than the crying because it shows resignation.

And detachment.

That's a defense mechanism where the child ignores the parent upon return.

But generally, can toddlers handle separation better than infants?

Yes, because of object permanence.

They know the parent still exists.

But, and this is key stress, triggers regression.

If a toddler is sick or in the hospital,

their tolerance for separation vanishes.

They regress to that infant -like need for constant contact.

Let's talk about the tool they use to express all this.

Language.

The vocabulary explosion is real.

By age three, a toddler usually has about 900 words.

That is a massive jump from the few words a one -year -old has.

It is.

They start with simple nouns.

Then around age two, they start using telegraphic speech.

Like a telegram.

Send money, stop.

Exactly.

Daddy gone car.

Me want cookie.

They strip out the filler words and just use the essential nouns and verbs.

But there is a huge source of frustration here called the gap between receptive and expressive language.

Receptive is what they understand.

Yes.

Receptive language grows much faster than expressive language.

A two -year -old might understand a complex sentence like, we're going to grandma's house after we find your shoes.

But they can only say what?

Grandma, go.

So they have these complex thoughts and feelings, but they are trapped behind a limited vocabulary.

Imagine how frustrating that is.

You know exactly what you want, but you can't say it.

That frustration is the engine behind a lot of temper tantrums.

The text mentions that adults need to be careful about how they react to a toddler's speech.

Toddlers are mimics.

If they say a word and you smile and cheer, they will say it again.

Positive reinforcement.

Absolutely.

Yeah.

But if you yell at them, they mimic that tone too.

If you scream no at a toddler, don't be surprised when they scream no.

Back at you.

Louder.

Now what about when speech isn't happening?

We hear a lot about early intervention.

What are the red flags for a nursing assessment?

Delayed speech can be normal, but we never assume that.

We screen.

The text lists specific red flags for autism that every nurse should know.

Run us through the lists.

By 12 months, no pointing or gesturing.

By 16 months, no single words.

By 24 months, no two word phrases.

Okay.

And the biggest red flag of all.

Any loss of previously achieved skills.

Oh, that's a big one.

Huge.

If a child was babbling or saying words and then stops, that is an immediate referral.

But before we jump to a diagnosis of autism or a developmental disorder, there is a medical rule out the text emphasizes.

Yes.

You must rule out physical causes first.

Hearing loss is one.

Sure.

But the other is lead poisoning.

Lead poisoning.

That feels like something from the 19th century.

It is unfortunately still very relevant.

Lead, neurotoxicity, lead damaging the brain can present a speech delay or behavioral issues.

Where are toddlers getting lead?

Old paint is the classic source, but also imported ceramics, vertical blinds, or even soil.

Toddlers are at high risk because of their hand to mouth behavior.

They touch everything and then put their hands in their mouths.

Constantly.

And lead tastes sweet, believe it or not.

Tastes sweet.

Yes.

Lead paint chips have a sweet taste.

So a child might actually seek them out.

Screening for lead levels is a mandatory part of the assessment if there are delays.

That is scary, but important to know.

Let's move to the hard work of parenting.

Guidance and discipline.

The text makes a distinction between discipline and punishment.

They are not the same thing.

Punishment is about inflicting a penalty for bad behavior.

Right.

Discipline comes from the word disciple.

It means to teach.

The goal of discipline is teach self -control, not to break the child's spirit.

The gold standard technique mentioned is the timeout.

But I feel like everyone does timeouts differently.

What are the actual clinical rules?

The rule for duration is simple.

One minute per year of age.

So a two -year -old gets two minutes.

Maximum.

A five -minute timeout for a two -year -old is useless.

They will forget why they are there.

Right.

But the trickiest part is the timing.

When do you start the clock?

You don't start the clock while they are screaming and thrashing.

You place them in the timeout spot and you say, the timer starts when you are quiet.

Oh, that is a battle of wills.

It is.

But if you let them out while they are still screaming,

you have taught them that screaming is the key to the lock.

You're reinforcing the behavior.

Exactly.

You have to wait for them to self -regulate.

And then, this is vital, when the buzzer goes off, you don't lecture.

You don't say, I hope you learned your lesson.

So what do you do?

You praise them for sitting quietly.

You reset.

You reset.

Good job staying calm.

Now let's go play.

You catch them being good.

Let's talk about the tantrum.

It peaks around age two.

Why?

It's the perfect storm.

Low frustration tolerance, high desire for autonomy, and that language gap we talked about.

Plus, they get overtired easily.

So what is the management strategy?

Do we reason with them?

You cannot reason with the tantrum.

No.

The rational part of their

The advice is ensure safety and then ignore the behavior.

Ignore it.

Completely.

If you engage even negatively,

you're rewarding the behavior with attention.

If you give in and buy the candy bar, you have just trained them that screaming works.

So you have to be a stonewall.

You do.

It requires nerves of steel.

Now, fear.

Toddlers can be very fearful.

Fear is a protective mechanism, but it can be intense.

The text advises never to mock fears.

If they are scared of monsters, respect that feeling.

Okay.

But there's a very specific clinical observation about fear that nurses use to assess the parent -child bond.

The clinging test.

Yes.

Picture this.

A nurse walks into the exam room with a stethoscope or a needle.

The toddler is stressed.

A securely attached toddler will run to their parent and cling to them for safety.

That's the healthy response.

Yes.

But if the toddler runs to the nurse, the stranger, or sits passively and doesn't seek the parent at all during that moment of stress,

that is a massive red flag.

Wow.

It suggests the parent is not a source of comfort.

It requires further investigation into the home dynamic.

That is a really powerful observation tool.

Let's shift gears to the daily grind.

Care and nutrition.

Let's start with clothing and shoes.

The theme for clothing is independence.

Nurses should encourage parents to buy clothes the toddler can manage themselves.

Elastic waistbands, velcro shoes.

Exactly.

It helps with potty training and autonomy.

And shoes.

I've heard you need hard soles for sport.

Actually, the text says the opposite.

Going barefoot is beneficial when it's safe because it strengthens the foot muscles.

Really?

Yep.

If they wear shoes, they should fit the shape of the foot and be flexible.

We don't need rigid orthopedic boots for normal development.

Now nutrition.

This is often a war zone in households.

It is because of a phenomena called physiological anorexia.

That sounds serious.

It just means their appetite naturally drops because their growth rate has slowed.

Oh, right.

They don't need as much fuel as they did when they were infants.

Caloric needs drop to about 100 calories per kilogram per day.

So parents panic because the kid isn't eating, but the kid is actually fine.

Exactly.

And they become picky eaters.

They develop strong preferences or food jags where they only eat one specific food for a week.

I only eat dinosaur nuggets.

Right.

And the advice is don't force it.

Keep meal times pleasant and use the portion control rule.

One tablespoon of solid food per year of age.

That seems tiny.

Two tablespoons of peas for a two year old.

That's a serving.

If you put an adult size pile of food on their plate, they get overwhelmed and refuse to eat.

Keep it small.

And there is a specific warning about milk.

Yes, no more than 24 ounces, about 720 mil allows of milk per day.

Why limit milk?

Milk is healthy.

Milk is great for calcium, but it is terrible for iron.

It has almost no iron.

If a toddler fills their stomach with milk, they aren't eating iron rich solids like meat or leafy greens.

This leads to milk anemia, iron deficiency anemia.

So you see a chubby milk fed baby who is anemic.

Exactly.

They look healthy, but they are pale and lethargic.

Milk is not a meal replacement at this age.

Okay, let's tackle the big one.

Toilet independence, or as most people call it, potty training.

When do we start?

You start when the child is ready, not when the parent is ready.

Right.

We already talked about the physiological readiness, the myelination around 18 to 24 months, but you also need to look for developmental signs.

Like what?

Can they stay dry for two hours at a time?

Are they waking up dry from a nap?

That shows bladder capacity.

And they have to be able to communicate it.

Exactly.

Can they communicate that they need to go?

If they can't say poop,

they can't tell you they need the toilet.

And equipment matters.

The text prefers potty chairs over regular toilets.

This is about physics and security.

If you put a small child on a regular toilet, their legs dangle.

They feel unstable, like they might fall in.

That fear inhibits them.

Totally.

And the physics.

What about the physics?

To pass a bowel movement effectively, you need to bear down.

You need leverage.

You can't generate that leverage if your feet are dangling in the air.

Right.

A potty chair puts their feet flat on the floor.

It gives them a platform to push against.

So if you must use a regular toilet.

You absolutely must use a footstool.

It's not optional if you want success.

And what about regression?

It's incredibly common.

If there is stress, a move, a new sibling, a hospitalization, expect the child to wet the bed.

And how should nurses handle that?

Never shame the child.

Just change the bedding, matter of factly.

It's a temporary slide back.

All right.

We have arrived at the final and perhaps most critical section of this chapter.

Safety.

This cannot be overstated.

Accidents kill more children in this age group than disease.

It's the perfect storm, isn't it?

They are mobile, they are curious, and they have absolutely zero impulse control.

Exactly.

They can walk and climb, but they don't understand danger.

So let's break down the risks.

Number one, motor vehicles.

The car seat debate.

It shouldn't be a debate.

The rule is rear facing for children up to two years old or until they exceed the manufacturer's weight height limits.

Explain the physics here.

Why is rear facing safer?

It comes down to the toddler's anatomy.

Their head is large and heavy relative to their body,

and their neck muscles are weak.

In a frontal crash, which is the most common type, if the child is facing forward, the head is thrown forward violently.

This whiplash can sever the spinal cord.

It's called internal decapitation.

That is a horrifying image.

It is.

But if they are rear facing, the back of the car seat cradles the head, neck, and spine.

It distributes the force of the crash across the entire back.

It's just so much safer.

It is exponentially safer.

Okay.

Point taken.

Rear facing as long as possible.

What about inside the house?

The text suggests a get down on your knees approach.

Yes.

You literally need to crawl around your house to see what a toddler sees.

Get their perspective.

You'll spot the electrical outlet that looks like a face.

You'll see the cleaning supplies under the sink.

Let's run the checklist.

Burns.

Turn pot handles inward on the stove.

A toddler can reach up and pull a pot of boiling water down on themselves.

Cover outlets.

And sunscreen SPF 30 or higher.

Poisoning.

Locks on cabinets are essential.

And here is a major communication rule.

Never ever call medicine candy.

Even if it's a gummy vitamin.

Especially then.

If you tell a sick child, here is your candy, to get them to take medicine, they will remember that.

And they'll go looking for it later.

Right.

And when you aren't looking, they will find the bottle and eat the rest of the candy.

Drowning.

This relates back to top heavy physique we talked about.

Right.

Because their head is heavy, their center of gravity is high.

If a toddler leans over a toilet or a bucket of water to see what's inside, they can easily tip over.

And they can't push themselves back up.

Right.

They can drown in a very small amount of water.

Yeah.

Constant supervision is the only defense.

Joking.

We know about small toys, but food is a huge culprit.

Hot dogs are the classic enemy.

They are the perfect size to plug a trachea.

You have to slice them lengthwise.

Popcorn, nuts, hard candy, all dangerous.

And balloons.

If a balloon pops, the latex pieces are a major suffocation hazard.

Too full.

Window guards are crucial.

Screens keep bugs out.

They do not keep children in.

And stair gates.

As soon as they learn to climb, they will try to summit everything.

Finally, let's talk about play.

The text calls play the work of the toddler.

Through play, they learn how the world works.

But socially, they engage in something called parallel play.

They play next to each other, but not with each other.

Oh, right.

If you put two toddlers on a rug with blocks, they will build two separate towers.

They won't collaborate to build a castle.

So if a parent expects them to share and work together, they're setting them up for failure.

Toddlers don't understand ownership yet, so they can't understand sharing.

It's mine is a developmental concept.

They're just learning.

And what kind of toys are best?

Do we need the expensive electronic learning robot?

Definitely not.

The text explicitly says expensive toys are unnecessary.

They need tactile toys.

Sand, water, blocks.

Simple stuff.

Push -pull toys like a lawnmower or a vacuum help encourage walking.

A cardboard box often provides more creative play than a hundred dollar gadget.

And one final note on pets.

Supervision.

Toddlers don't understand that the dog has feelings or boundaries.

They will pull a tail or poke an eye.

You can never leave a toddler alone with a pet for the safety of both the child and the animal.

So we have covered a massive amount of ground today.

From the slowing of physical growth to the explosion of language, the battle for autonomy and the constant vigilance required for safety.

It is a dynamic, exhausting and incredibly important stage.

The toddler is a little scientist exploring the world.

Right.

And the nurse's role is to guide the parents in balancing that safety with the child's absolute need for autonomy.

It really puts the no into perspective.

It's not defiance.

It's development.

Exactly.

And if we connect this to the bigger picture, think about this.

How parents handle that no today, how they handle that fight for autonomy, lays the foundation for the adult.

We want to raise adults who can set boundaries, who can say no to bad situations.

That skill starts right here with a toddler refusing to put on their shoes.

That is a fantastic thought to leave us with.

Autonomy isn't a phase.

It's a life skill in the making.

Thank you for listening to this deep dive on the toddler.

And be sure to review those milestone tables in your text.

The NCLEX loves to ask exactly when a child can stack two blocks versus six blocks.

Absolutely.

This is the Last Minute Lecture Team signing off.

Good luck with your studies.