Chapter 10: Complications of Pregnancy

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Hello everyone and welcome back to the Deep Dive.

Yeah, we are jumping right into the deep end today.

We really are.

Usually, you know, we take a broad topic and just sort of swim around the edges picking out the shiny parts.

But today, we are tackling chapter 10 of Foundations of Maternal Newborn and Women's Health Nursing, the seventh edition.

Right.

And the chapter is titled Complications of Pregnancy.

But honestly, I feel like that title is almost too polite.

It's huge understatement, isn't it?

Yeah, it sounds like a scheduling conflict.

But when you actually read through this material, you realize this is the high stakes chapter.

This is where the job of a and delivery nurse really shifts.

Right.

It shifts from facilitating a happy natural event to essentially being this high level physiological detective.

Exactly.

You aren't just holding hands and doing breathing exercises anymore.

We are talking about hemorrhage and seizures and organ failure.

So true.

This is the material that literally keeps nursing students up at night.

It is the stuff where if you miss a subtle cue, like a slight change in blood pressure, or a casual complaint about shoulder pain,

the outcome changes drastically.

The stakes could not be higher.

So our mission today is pretty specific.

If you are listening to this, we are going to treat this time like a one -on -one masterclass.

We are going to act as that senior tutor sitting down with you while you stare at this dense textbook.

And we are going to decode the pathology together.

I love that approach because we really need to bridge the gap between just memorizing a list of symptoms and actually understanding why the body is doing what it is doing.

Right.

The why is everything.

Because once you understand the why, you do not have to memorize the list anymore.

It just makes physiological sense.

And we are going to follow the exact order of the text.

So if you have the book, you can follow right along mentally.

Perfect.

So let us set the stage here.

The authors divide these complications into two distinct buckets to help organize our thinking.

What are we looking at with these buckets?

So broadly speaking, you have two categories.

Bucket one is pregnancy -related complications.

These are conditions that, by definition, can only happen to you if you are pregnant.

If you are not pregnant, you cannot have a placenta previa.

You cannot have gestational hypertension.

That makes total sense.

They are unique physiological failures of the pregnancy itself.

Exactly.

And then bucket two is concurrent conditions.

Because life does not just stop because you are pregnant.

A woman can still have diabetes or cardiac disease or asthma.

But now she is pregnant on top of that.

Right.

So it is about how the pregnancy affects the disease and inversely how the disease affects the pregnancy.

It is basically like a stress test.

It really is.

Pregnancy is the ultimate stress test for the heart, for the kidneys, for the endocrine system.

So if there was a crack in the foundation before pregnancy, you are going to find it and widen it.

Okay, let's roll up our sleeves and start with that first bucket.

Pregnancy -related complications.

And the text does not ease us in at all.

It starts with the most visceral fear in obstetrics, which is bleeding.

Specifically, section one, hemorrhagic conditions of early pregnancy.

Right.

Early pregnancy hemorrhage.

So we are talking about the first half of pregnancy here.

The big three you have to know are abortion, ectopic pregnancy, and gestational trophoblastic disease.

Let's tackle that first one.

You really need to address the language immediately.

The word abortion.

Yes, we do.

Because in the lay world, and especially in political discourse, the word abortion implies a choice.

It implies an elective procedure.

But in medical terminology and strictly in this textbook, abortion is a clinical definition.

It basically means the loss of a pregnancy before the fetus is viable.

And viability has a hard line in the sand for this textbook, right?

It does.

The medical consensus for viability here is less than 20 weeks gestation or a fetal weight of less than 500 grams.

If the pregnancy ends before that point, regardless of how or why, the chart will say abortion.

Now, the text does distinguish between induced, which is elective, and spontaneous.

And spontaneous abortion is what the rest of the world calls a miscarriage.

Correct.

And that is what this chapter focuses on completely.

It is incredibly common, too.

The stats in the text say anywhere from 18 to 31 percent of conceptions end this way.

That is a staggering number when you really think about it.

It is.

And maternal age is a huge factor there.

If you are under 20, the risk is about 12 percent.

But if you are over 45, the risk shoots up to over 50 percent.

I think for you as a student, and certainly for the patients, you'll treat the immediate question as why.

When the patient comes in losing a pregnancy, her first question is almost always, did I do something wrong?

Did I lift something heavy or did I drink too much coffee?

Exactly.

That is the most heartbreaking part of the triage assessment, the guilt they feel.

But physiologically, the answer is almost always no, you did not cause this.

The vast majority of these 50 to 60 percent of cases in the first trimester are due to chromosomal abnormalities.

Is literally a coding error.

Exactly.

The genetic blueprint just wasn't viable.

The body recognizes that development has stopped or is going significantly wrong, and it ends the process.

It is nature's quality control.

As harsh as that sounds to say out loud.

It is.

Other causes can be maternal infections or endocrine issues like hypothyroidism or even structural defects in the uterus itself.

Now, clinically, not all miscarriages look the same.

And the text uses figure 10 .1 to visualize these subgroups of spontaneous abortion.

This is critical for assessment because you have to know what you are looking at.

Right.

You need to know is it happening right now or has it already happened or is it just warning shot?

Let's walk through the three key ones visually represented in that figure.

The first one is threatened abortion.

Threatened.

It sounds ominous, but there is actually a glimmer of hope there.

There is.

The clinical picture is vaginal spotting or bleeding, maybe some mild cramping or a backache.

But and this is the assessment finding that matters most.

The cervix is closed.

Closed means the barrier is still intact.

Yes.

In the diagram, you can clearly see the cervical os is shut tight.

No tissue has passed.

The pregnancy is still secure inside the uterus, but it is unstable.

So what do we tell that patient?

She is bleeding and she is scared.

We tell you the truth, which is difficult.

About half of these pregnancies will continue to term and half will end in loss.

We can do an ultrasound to check for a heartbeat.

If we see cardiac activity, the odds improve.

But truthfully, the management here is just a wait and see approach.

It really is.

We might suggest limiting sexual activity, but strict bed rest has never been proven to actually stop a miscarriage if the cause is genetic.

That waiting game has to be psychological torture for a patient.

It is.

And as a nurse, your role isn't really medical intervention here.

It is holding space for that anxiety.

You teach her to count pads to monitor her blood loss and you wait.

Now contrast that with the next type shown in figure 10 .1, which is the inevitable abortion.

The name says it all.

It cannot be stopped.

If you look at the figure, the hallmark sign here is that the membranes have ruptured.

The water has broken and you can see the cervix is dilating.

It is open.

Once that door is open and the fluid is gone.

The process has started.

Active and often heavier bleeding follows.

The uterus is contracting to expel the contents.

And the third one illustrated in the figure is the incomplete abortion.

This one sounds like the most dangerous one clinically regarding hemorrhage.

It is often the one that requires the most immediate intervention.

In an incomplete abortion, the figure shows that some of the products of conception, usually the fetal tissue, have passed through the open cervix, but the placenta or parts of the membranes are still stuck inside the uterus.

Why is that stuck tissue so dangerous?

Why can't the body just handle it on its own?

Because of how the uterus actually stops bleeding.

The uterus is a muscle.

To stop bleeding it has to cramp down hard like a tight fist to squeeze off the open blood vessels where the placenta was attached.

If there is tissue in the way, it is like trying to close a door with a foot in the jam.

It can't close.

It can't clamp down.

So the blood vessels just stay open and the woman hemorrhages.

That is a great vigil.

The foot in the door.

So if the uterus can't clamp, we have to help it clear the jam.

Exactly.

That is where the vacuum curettage or a D and C comes in.

Dilation and curettage.

We manually dilate the cervix if it is not already open enough and use a curett to scrape the uterine walls to remove that retained tissue.

And once it is clear, we give oxytocin.

Right.

Oxytocin forces the empty uterus to contract tightly and stop the bleeding.

There is one more tight mention that I really want to touch on because it is so confusing for patients.

The missed abortion.

This one is psychologically devastating.

In a missed abortion the fetus has died in utero but the body hasn't recognized it yet.

So there are no outward signs.

None.

There is no bleeding.

The cervix is closed.

The woman still feels pregnant or maybe she just notices her nausea suddenly vanished.

She goes in for a routine checkup expecting to see a baby on the screen and the ultrasound shows no heartbeat.

That shock is just unimaginable.

It is profound and medically we cannot just leave the tissue in there indefinitely because of the risk of infection or DIC which we will get to later.

So we usually have to induce the miscarriage using a drug called mesoprostol to trigger contractions or we perform a D and C.

The nursing consideration section here emphasizes something really important.

It says no false reassurance.

That is the golden rule of obstetric nursing.

Do not say it will be okay.

Do not say nature knows best.

Do not say you can always try again.

Because those are just platitudes that dismiss her current grief.

Exactly.

The text notes that grief from a pregnancy loss can last up to 18 months.

Whether it was a six -week pregnancy or a 16 -week pregnancy, the loss of the future they imagined is incredibly real.

We have to validate that.

Moving on to the second cause of early hemorrhage.

The text calls this a disaster of reproduction,

ectopic pregnancy.

That strong language is definitely warranted.

An ectopic pregnancy destroys the potential for that life and it can permanently damage the mother's fertility or even kill her.

By definition, it is a fertilized ovum implanted outside the uterine cavity.

Right.

The uterus is designed to stretch.

It is a miracle organ that can accommodate a growing baby.

But everywhere else in the pelvis, not so much.

Figure 10 .2 shows the specific sites for this.

Let's describe what this diagram is showing.

So figure 10 .2 shows the female reproductive tract and it points out where these errant implantations happen.

97 % of the time it implants in the fallopian tube.

And the text breaks the tube down into specific sections, right?

Yes.

The diagram labels the ampullar, the ismic, the fembril, and the interstitial sections of the

structure.

It is absolutely not designed to expand.

So you have a rapidly growing embryo in a non -stretchy tube.

That is just a ticking time bomb.

It is.

As the embryo grows, it stretches the delicate tissue of the tube until it inevitably ruptures.

How does the egg even get stuck there in the first place?

Usually it is a traffic jam.

The egg is fertilized in the tube and it is supposed to travel down into the uterus.

But if the tube is scarred, maybe from previous pelvic inflammatory disease, usually from chlamydia or gonorrhea or from previous pelvic surgery or IUD, the egg hits a pothole.

It gets stuck.

Right.

It can't move forward so it just implants right there in the tube.

What is the clinical triad the nurse needs to spot when assessing this patient?

A missed period,

a positive pregnancy test, and abdominal pain.

That is the classic trio.

Often there is some spotting too.

But the pain changes dramatically if the tube bursts, you have massive internal bleeding.

The patient will have sudden severe pain in one of the lower quadrants.

But here is the deep dive nugget.

The specific sign that separates the experts from the novices, shoulder pain.

This confuses so many students.

Why does my shoulder hurt if my fallopian tube just exploded?

It is called referred pain.

When the tube ruptures blood fills the abdominal cavity, that pooling blood actually irritates the diaphragm and the neck and shoulder area.

So the brain interprets that diaphragm irritation as severe shoulder pain.

If a pregnant woman in her first trimester complains of sudden shoulder pain, you run, you don't walk.

That is internal hemorrhage.

When you combine that with signs of shock like a pale face, a racing pulse, and dropping blood pressure, you have a surgical emergency.

Absolutely.

But if we catch it before it ruptures, if we see the ectopic on an early ultrasound, we can actually manage it medically without surgery.

We use a drug called methotrexate.

Which is a chemotherapy drug.

It is.

It is a folic acid antagonist.

It basically stops rapid cell division.

So it essentially dissolves the pregnancy while leaving the fallopian tube intact.

Which preserves her fertility for the future.

Yes.

But because it is a chemo drug, the nursing instructions for the patient are really intense.

What do we have to teach them?

For 72 hours, the woman's urine is toxic.

She has to close the toilet lid and double flush every single time, so no aerosolized drug escapes into the air.

That is serious.

She has to avoid alcohol.

And crucially, she has to avoid all folic acid supplements, no prenatal vitamins at all, because the folic acid would counteract the drug.

That is such a counterintuitive instruction for a woman who has been trying to conceive, but it's totally necessary here.

Yeah.

Okay, let's move to the third early hemorrhagic condition.

This one is frankly bizarre.

Gestational trifoblastic disease or the hydatidiform mole.

This is one of those pathologies that really reminds you how complex human reproduction actually is.

In a molar pregnancy, the trophoblasts, which are the peripheral cells that normally attach the fertilized egg to the uterine wall and eventually become the placenta, they just go haywire.

They develop abnormally.

So instead of baby in a placenta, you get grapes.

Essentially, yes, the chorionic valet become the swollen fluid -filled grape -like clusters.

And the text differentiates between a complete and partial mole.

Right.

In a complete mole, there is absolutely no genetic material from the mother.

The sperm fertilizes an empty egg.

It duplicates its own chromosome.

So there is no fetus at all, just this massive growing cluster of vesicles filling the uterus.

And a partial mole.

That is usually two sperm fertilizing one normal egg.

You get 69 chromosomes instead of 46.

There might actually be some fetal tissue present, but it is grossly abnormal triploid and it is never viable.

How do we know it is a mole and not a normal pregnancy?

What are the red flags we look for?

There are a few very distinct ones.

First, the uterus grows way too fast.

You might be 10 weeks pregnant by your dates, but your fundal height is measuring 18 or 20 weeks.

The uterus is just packed full of these rapidly expanding vesicles.

And the hormone levels.

The HCG levels.

The pregnancy hormone are sky high.

Much higher than you would ever see in a normal singleton pregnancy.

And since we know HCG causes nausea.

The woman has extreme hyperemesis.

Severe uncontrollable vomiting.

And there is a blood pressure connection too that students need to catch.

Yes.

Preeclampsia, which is high blood pressure with other signs, usually happens late in pregnancy.

If you see preeclampsia symptoms in a woman before 24 weeks, you immediately suspect a molar pregnancy.

And then the ultrasound confirms it.

Right.

It shows a classic snowstorm pattern.

You don't see a baby.

You just see static and vesicles.

The management seems straightforward, which is to evacuate the uterus.

But there is a massive safety trap here regarding oxytocin.

This is so important.

We do not induce labor.

We do not give oxytocin before the evacuation.

Why not?

If the uterus contracts hard on those vesicles, it can force that trophoblastic tissue deep into the mother's venous circulation.

You could cause a pulmonary embolism of molar tissue.

Which would be catastrophic.

Exactly.

So we use gentle vacuum aspiration instead.

But the story doesn't end when the uterus is empty.

And this is the part that really scares patients.

The follow -up.

This is the critical takeaway for your care plan.

This molar tissue has a very high potential to become malignant.

It can turn into choreocarcinoma, which is a fast -growing cancer.

So the nurse has to educate the patient that she is not out of the woods yet.

Correct.

She needs her HCG levels checked every one to two weeks until they are completely negative, and then every one to two months for a full year.

And the hardest part of that teaching?

She cannot get pregnant for that entire year.

Because if she gets pregnant, her HCG naturally goes up.

And we won't know if the HCG is rising because she is growing a new baby, or because the cancer has returned.

The new pregnancy would mask the cancer marker entirely.

It is a terrible year of anxiety for the patient, but strict adherence to birth control is the only way to ensure she is safe.

All right.

Let's take a breath.

That was just the first half of pregnancy.

Now we cross the halfway mark.

We are past 20 weeks.

We are in the realm of section two hemorrhagic conditions of late pregnancy.

The stakes change significantly here because now we are dealing with a potentially viable baby.

The two big titans in this arena are placenta previa and abruptio placenta, or placental abruption.

And in a nursing exam or in triage, you had to be able to tell these two apart instantly.

Let's start with placenta previa.

Previa is an implantation problem.

The placenta plants itself very low in the uterus near or completely covering the cervix, which is the exit door.

Figure 10 .3 visualizes the degrees of this.

It shows marginal, partial, and total.

Let's describe that.

So in the diagram for marginal previa, you see the placenta is low lying.

It is more than three centimeters away from the internal cervical loss.

In a partial previa, the edge is within three centimeters, but it doesn't quite cover the opening.

And total.

The total previa diagram shows the placenta acting like a complete cap over the cervix.

It is completely blocking the way out.

The classic sign here is painless vaginal bleeding.

Painless.

That is the absolute keyword.

Why is it painless?

It is bright red and painless because as the lower uterus naturally stretches and thins out in the third trimester, the placenta just detaches slightly from the uterine wall.

But because it is detaching right over the open space of the cervix, the blood just flows out.

There is no pressure buildup, no trapped blood, no pain.

However, just because it doesn't hurt doesn't mean it is safe.

In fact, there was a specific do not touch rule for nurses here.

This is a life or death rule.

If a pregnant woman comes into triage with vaginal bleeding after 20 weeks, you never perform a digital vaginal exam.

Do not put your fingers in there to check for dilation.

Never.

Because if she has an undiagnosed total previa, your fingers will go right through the spongy tissue of the placenta.

You will literally tear it and cause a massive hemorrhage.

You always wait for the ultrasound to confirm placental location first.

What is the management for previa once it's diagnosed?

If the bleeding is stable and the baby is premature, we do conservative management.

Bed rest and observation.

But if it is a total previa, she obviously cannot deliver vaginally.

The placenta is blocking the exit.

It requires a cesarean section.

Okay, so previa is painless bleeding.

Now let's look at its evil twin, abruptio placenta.

Abruption is the premature separation of a normally implanted placenta.

It is supposed to be high up on the uterine wall, but it rips away before the baby is born.

And unlike previa, this hurts.

Agonizingly.

The classic signs are bleeding, though not always visible, uterine tenderness and a board -like abdomen rock hard to the touch.

The uterus becomes incredibly rigid.

This happens either because blood is pooling behind the placenta and pumping up the internal pressure, or the uterine muscle is in a constant titanic spasm from the severe irritation of the bleeding.

Figure 10 .4 shows why the bleeding might be concealed right.

Yes.

The diagram for concealed abruption is fascinating.

It shows the edges of the placenta staying stuck to the uterine wall while the center pulls away.

Trapping the blood.

Exactly.

Trapping the blood in a pocket behind the center.

So the patient is bleeding internally into her own uterus.

You might see absolutely no blood on the bedsheets, but her blood pressure is tanking, her pulse is racing, and she is going into hypovolemic shock.

That is terrifying for a nurse to assess what causes this abruption to happen.

Anything that severely clamps down blood vessels or causes abdominal trauma.

Cocaine use is a huge one because it causes intense systemic vasoconstriction.

Severe hypertension can do it.

Smoking.

Or physical trauma like a car accident or domestic violence.

And if her water breaks, the amniotic fluid looks different.

Yes, the text describes it as port wine fluid.

It is amniotic fluid mixed with old dark blood.

So to summarize for the student listening,

Previa equals painless bright red blood and a soft resting uterus.

Abruption equals painful dark red or concealed blood and a hard board like uterus.

That is a perfect summary.

And for nursing safety, if you see signs of concealed hemorrhage, that hard abdomen increasing fundal height, or persistent late decelerations on the fetal monitor, you need immediate medical intervention.

Now there is a condition that often follows a really bad abruption.

It is detailed in Section 3 DIC.

Disseminated Intravascular Coagulation.

This is the ultimate paradox of pathology.

Oh, so.

You are clotting and bleeding at the exact same time.

That completely breaks my brain.

Walk us through the mechanism of DIC.

Think of it as a consumptive coagulopathy.

When something massive happens like a severe abruption that releases huge amounts of tissue thromboplastin into the maternal bloodstream, the body panics.

It overreacts.

Massively.

It activates the clotting cascade everywhere all at once.

It starts making millions of tiny microscopic clots in the small vessels all over the body.

Okay, so we are clotting.

Why is that bad?

Because the body only has a limited supply of clotting factors like platelets and fibrinogen.

It uses them all up making these useless microclots in the circulation.

The covered is bare.

Exactly.

So when you have a real injury, like the massive wound inside the uterus where the placenta tore away, or even just a simple IV site, there are no supplies left to form a clot.

So you bleed freely because you wasted all your clotting glue on the microclots.

Right.

The patient will literally start bleeding from their gums, from their nose, from their IV sites.

You will see patechiae, little red hemorrhagic spots all over their skin.

How do you treat a paradox like that?

Yeah.

Because if you give blood thinners to stop the microclots, they bleed to death.

If you give clotting factors, they just make more microclots.

You have to fix the trigger.

If the trigger is the abrupted placenta, you have to deliver the baby in the placenta immediately.

Once the trigger is gone, the body stops the panic mode.

Only then can you effectively replace the blood and platelets.

Let's shift gears slightly to section four, hyperemesis gravidarum.

We need to be crystal clear here.

This is not morning sickness.

Right.

Morning sickness is unpleasant.

HEG is dangerous.

The definition involves persistent uncontrollable vomiting that leads to significant measurable consequences.

A 5 % weight loss from pre -pregnancy weight, severe dehydration, and ketosis.

Ketosis meaning the body is starving so it is burning its own fat for fuel.

Exactly.

And the electrolyte imbalances, specifically hypokalemia or low potassium, can actually affect the mother's heart rhythm.

Plus, they develop severe alkalosis from losing so much stomach acid.

The text really emphasizes the emotional and psychological component here too.

It is a huge part of nursing care for HEG.

These women often feel totally dismissed by their families or even by providers who just say, oh, have a saltine cracker, you will be fine.

When in reality, they're miserable and can't function.

They feel awful.

The nurse needs to validate that this is a real severe illness.

Management involves 5E fluids replacing electrolytes, giving vitamin B6 and ginger, and teaching them about small frequent meals, separating solids and liquids is a key tip for them.

Do not drink fluids while you eat a meal.

Okay, we are arriving at section 5.

This is arguably the biggest and most complex topic in OB nursing complications,

hypertensive disorders of pregnancy.

This is the absolute bread and butter of a high -risk maternal unit, and the terminology confuses everyone.

So let's look at table 10 .1 and really break it down.

There are four main categories.

Category 1 is gestational hypertension.

This is high blood pressure over 140, over 90 appearing after 20 weeks of pregnancy.

But, and this is the key, there's absolutely no protein in the urine.

Okay, high BP after 20 weeks, no protein.

Category 2.

Preeclampsia.

This is the bad actor.

This is high blood pressure after 20 weeks plus proteinuria.

Or even if there is no protein, it counts as preeclampsia if there are signs of organ damage like low platelets or kidney insufficiency.

Category 3.

Eclampsia.

This is simply preeclampsia that has progressed to a generalized seizure.

That is the hard line.

A seizure means eclampsia.

And the fourth category.

Chronic hypertension.

This means you had high blood pressure before you ever got pregnant, or it was diagnosed before 20 weeks, or it persists for more than 12 weeks postpartum.

Okay, let's zoom in heavily on preeclampsia, because the danger isn't just the high number on the blood pressure cuff.

The danger is what is happening to the internal organs.

And the text points out the root pathophysiology is vasospasm.

Yes.

Table 10 .3 and figure 10 .5 lay this out beautifully.

Imagine every single blood vessel in your body clamping down and tightening.

The resistance goes way up so the blood pressure goes up.

But more importantly, blood flow to all the vital organs goes down.

Let's trace the damaged organ by organ using that table.

First, the kidneys.

The kidneys take a huge hit.

Vasospasm reduces blood flow to them.

The glomerular filtration rate drops.

The kidneys actually get damaged and become leaky.

Protein, which should stay inside the blood vessels, leaks out into the urine.

That is why we check for proteinuria.

And we know from basic physiology that when protein leaves, the blood fluid follows it out into the tissues.

Yes, causing massive edema, swelling in the face, puffy hands, and oliguria, which is dangerously low urine output.

Next organ to the liver.

Vasospasm cuts off blood flow to the liver.

The liver gets angry and ischemic.

It swells up.

And as it swells, it stretches its outer capsule.

This stretching causes epigastric pain or pain in the right upper quadrant.

So if a pregnant woman with high blood pressure tells you my stomach hurts right here under my ribs, that is an ominous sign.

It is terrifying.

It means the liver is in severe distress and could rupture.

Or it means a seizure is imminent.

Next, the brain.

The brain suffers from cerebral edema and vasoconstriction.

This causes the classic preeclampsia headache that just won't go away even with Tylenol.

Visual disturbances like seeing spots or fireflies.

And hyperreflexia.

The nervous system gets extremely twitchy.

Very twitchy.

Procedure 10 .1 in the text details exactly how to check deep tendon reflexes or DTRs.

If you tap the knee and the leg kicks out wildly, a 3 plus or 4 plus reflex, the central nervous system is extremely irritable.

And we also check for clonus, right?

Yes.

You dorsiflex the foot pushing it back toward the knee and let go.

If it beats rhythmically against your hand as it relaxes, that is positive clonus.

It means her seizure threshold is dangerously low.

And we can't forget figure 10 .6, which shows the pitting edema scale.

Right.

It shows how to press over a bony prominence and grade the depth of the indentation from plus one to plus four to assess how much fluid is leaking into the tissues.

So how do we fix all this vasospasm?

The only actual cure for preeclampsia is delivery.

You have to get the placenta out because the placenta is releasing the factors causing the vasospasm.

But if the baby is very premature, we try to buy some time.

We treat the blood pressure with meds like labetalol.

But the really heavy hitter we use is magnesium sulfate.

Talk to me about MAG.

It is a high alert drug on the unit.

It is.

And students almost always get this wrong on tests.

Magnesium is not given to lower blood pressure.

It is a central nervous system depressant.

We give it specifically to prevent seizures.

It relaxes that irritable nervous system.

But the margin for error with MAG is razor thin.

It is.

We want to depress the system enough to stop a seizure, but not enough to stop her from breathing.

So the nurse has to be hypervigilant for magnesium toxicity.

Table 10 .5 lists the specific signs.

Right.

Number one, her respiratory rate drops usually below 12 breaths a minute.

Number two, her DTRs disappear completely.

And number three, her urine output drops below 30 milliliters an hour.

And if her kidneys stop working, she can't excrete the drug.

So the magnesium just builds up in her blood to lethal levels.

If we see those signs of toxicity, what do we do?

You turn off the MAG infusion immediately,

and you grab the antidote, which is calcium gluconate.

It directly reverses the effects.

It must be at the bedside of every single patient on MAG.

Before we leave hypertension, we have to mention HLLP syndrome.

It is a severe, life -threatening variant of preeclampsia.

It is an acronym.

Hemolysis, which is red blood cells breaking down.

Elevated liver enzymes and low platelets.

These women are critically ill.

They are in the ICU often, and the specific nursing precaution here is do not palpate their abdomen deeply.

That swollen, angry liver can literally rupture if you poke it.

Wow.

Okay, let's move to section six.

Incompatibility between maternal and fetal blood.

This is the RH factor story.

This is essentially an immunological battle between mom and baby.

This setup is very specific.

The mother must be RH negative and the fetus must be RH positive.

Meaning mom's red blood cells don't have the RH antigen, but the babies do.

Right.

During a normal pregnancy, their blood doesn't mix much.

But during delivery or trauma or a procedure like an amniocentesis, some fetal blood gets into mom's systemic circulation.

And mom's immune system sees that positive antigen and says intruder.

Exactly.

It builds an army of antibodies to destroy it.

This is called sensitization.

But it usually doesn't hurt the first baby.

Because the first baby is usually born before mom's immune system can finish building the antibody army.

But the next pregnancy is the problem.

If that next baby is RH positive, mom's army is ready and waiting.

They cross the placenta and attack the fetus's red blood cells, causing severe fetal anemia brain damage or a fatal condition called hydrops fatalis.

But we have a miracle drug to prevent all of this.

Rojam.

It really is a miracle.

Rojam is basically passive antibodies.

We give it to the RH negative mom at 28 weeks gestation, and again within 72 hours of birth.

How does it work?

It hunts down and destroys those few fetal cells floating in her blood before her own immune system even notices them.

It completely prevents the sensitization from ever happening.

It's like a memory wipe for the immune system.

The text also mentions the Coombs test here.

Right.

The indirect Coombs test checks the mom's blood to see if she has already developed antibodies.

The direct Coombs checks the baby's cord blood after birth to see if antibodies are actively attached to the red blood cells.

Now we enter the second major bucket of the chapter, concurrent conditions.

Starting with section 7, diabetes mellitus.

Pregnancy really messes with your metabolism.

It is a total rollercoaster for insulin.

How so?

Break down the metabolic changes.

In the first trimester, you actually need less insulin.

You are prone to hypoglycemia because the rapidly growing fetus is just draining your glucose stores.

But in the second half of pregnancy, the placenta starts pumping out hormones like human placental lactogen that create massive insulin resistance.

It effectively blocks mom's insulin so that more sugar stays in her bloodstream for the baby to use.

Right.

It is a survival mechanism to ensure the fetus gets fed.

But if mom's pancreas cannot ramp up insulin production to overcome that blockade, she develops gestational diabetes or GDM.

What does this high sugar environment do to the baby?

Table 10 .6 outlines the risks.

The big one everyone worries about is macrosomia, which means a huge baby over 4 ,000 grams.

Why do they get so big?

Because sugar crosses the placenta, but insulin does not.

So if mom has high blood sugar, the baby has high blood sugar.

The baby's pancreas says, whoa, party time, and pumps out tons of fetal insulin to handle it.

And insulin acts like a growth hormone in a fetus.

Exactly.

So the baby just packs on fat and gets huge.

Which leads to difficult births, shoulder dystocia, and C -sections.

But the real physiological danger for the baby is actually right after the cord is cut.

Yes, because suddenly that massive maternal sugar supply is cut off.

But the baby's pancreas is still revving high, pumping out tons of insulin.

So the baby's blood sugar crashes.

Severe neonatal hypoglycemia.

We have to feed these babies immediately after birth and monitor their heel stick blood sugars very closely.

Management for the mom involves a whole team, right?

A dietitian, an endocrinologist, a perinatologist.

We screen for GDM using the glucose challenge test and the oral glucose tolerance test.

And diet is the cornerstone of care.

We teach them to distribute calories throughout the day, complex carbs protein.

And a bedtime snack is absolutely crucial to prevent nighttime hypoglycemia.

Section 8 moves us to cardiac disease.

This is pure physics.

It really is.

Pregnancy increases maternal blood volume by nearly 50%.

The heart is literally pumping for two.

If a woman has a pre -existing compromised heart, like a valve defect or congenital issue, she might decompensate under that massive load.

We classify their risk using the New York Heart Association classes found in box 10 .4.

Right.

Classes I and II generally tolerate the stress of pregnancy pretty well with monitoring.

Classes III and IV are very high risk because they have cardiac symptoms even at rest.

Management during labor is fascinating here because it goes against what we normally see in the movies.

We actually want to minimize cardiac work.

We keep them in a side -lying position to improve blood flow return to the heart.

We strongly recommend an early epidural to stop the physiological stress and tachycardia caused by pain.

And crucially, we tell them no pushing.

No pushing during labor.

The Valsalva maneuver, which is holding your breath and bearing down to push, puts immense dangerous strain on the heart.

We let them labor down, which means letting the natural uterine contractions push the baby low into the pelvis.

And then what?

Then the provider uses forceps or a vacuum extractor to gently lift the baby out.

We do not want mom straining her heart.

And the most dangerous time for these cardiac patients isn't actually the birth itself.

It is right after.

The immediate postpartum period is critical.

The placenta comes out.

All that massive blood flow that was going to the uterus about 500 to 700 milliliters a minute suddenly has nowhere to go but back into mom's main circulation.

It is an auto transfusion.

Yes, it is a massive sudden fluid shift.

A weak heart can get overwhelmed instantly, leading to congestive heart failure and pulmonary edema right there in the delivery room.

Section 9 touches briefly on obesity and anemias.

Obesity, which table 10 .7 categorizes as a BMI over 30, makes everything harder.

Higher risk of gestational diabetes, hypertension, and surgical complications if she needs a C -section.

And from a nursing logistics standpoint, it is challenging.

Very.

We need bariatric beds and extra large blood pressure cuffs for accurate readings.

Monitoring the fetal heart rate externally is often really difficult through adipose tissue, so we might need to place an internal fetal scalp monitor.

And the risk of a wound infection post -op is significantly higher.

What about anemias?

Iron deficiency is listed as the most common.

Right.

And a telltale assessment sign of iron deficiency anemia is PICA.

Craving and eating non -food items like ice dirt or laundry starch.

We treat it with iron supplements, but we teach them to take it with vitamin C, like orange juice, to help the body actually absorb it.

Sickle cell disease is also highlighted.

It is a very high -risk pregnancy.

The stress of pregnancy can trigger a sickle cell crisis, especially due to dehydration or an infection.

The sickled red blood cells clog the micro vessels, causing severe excruciating pain and tissue ischemia.

Treatment focuses heavily on aggressive hydration, oxygen therapy, and pain control.

Section 10 is a quick rundown of other concurrent medical conditions.

Let's do a rabbit fire through these.

Systemic lupus erosimitosis, or SLE.

High risk for miscarriage and preterm birth.

The nurse's job is to closely monitor for exacerbations or flare -ups during the pregnancy.

Antiphospholipid syndrome.

This is an autoimmune clotting disorder.

It is a major cause of recurrent spontaneous abortions because microclots form in the placenta.

It is usually treated with low -dose aspirin and prophylactic heparin.

Hashimoto's thyroiditis.

This causes hypothyroidism.

We must treat it with levothyroxine because maternal thyroid hormone is absolutely essential for normal fetal brain development, especially in the first trimester.

Epilepsy.

This is a really tough balancing act.

Many seizure medications are teratogenic, meaning they cause birth defects.

But maternal seizures cause fetal hypoxia, which is also dangerous.

We work with neurology to aim for the absolute lowest effective dose of single medication.

And Bell's palsy.

This is sudden facial paralysis.

It is incredibly scary for patients because they think they are having a stroke, but it is usually temporary.

Nursing care is mostly supportive and protecting the exposed eye.

Okay, we are in the home stretch.

Section 11 infections during pregnancy.

We have the viral infections in table 10 .9 and then some non -viral ones.

Let's hit the high yield testing points here.

Cytomegalovirus or CMV.

It is a leading cause of congenital hearing loss.

There is no vaccine.

So strict hand hygiene, especially around toddlers, is the only prevention.

Rubella.

Very teratogenic, especially in the first trimester.

We check the mother's titer to see if she is immune, but we absolutely cannot vaccinate her during pregnancy because it is a live virus.

So we wait.

Yes.

We vaccinate her in the postpartum period before she goes home, and we teach her she must not get pregnant for at least 28 days after receiving the shot.

Varicella or chickenpox.

If a pregnant woman is exposed, she can get VZIG, which is the immune globulin.

The real danger is that maternal varicella pneumonia is highly lethal.

Herpes, simplex virus, or HSV.

The risk is vertical transmission to the baby during vaginal birth.

If she has active lesions or blisters in the genital area when she goes into labor, she must have a cesarean section.

We cannot risk the baby touching those lesions.

It causes systemic neonatal herpes, which is often fatal.

We often use a cyclover as late in pregnancy to suppress any outbreaks.

Parvovirus B19, also known as fifth disease.

It causes the classic slap -cheek rash in kids.

In a pregnant woman, it can cause severe fetal anemia and fetal high drops.

Hepatitis B.

We screen all women for the surface antigen HBS egg.

If mom is positive, the baby gets the Hep B vaccine, plus the Hep B immune globulin within 12 hours of birth.

And yes, she is allowed to breastfeed after the baby is treated.

Human immunodeficiency virus, or HIV.

This is an incredible medical success story.

If we manage it properly, vertical transmission to the baby is remarkably low.

How do we manage it?

Mom takes antiretrovirals like Zetovirin throughout pregnancy.

We usually schedule a C -section at 38 weeks before her water breaks to limit exposure.

And the big absolute rule in developed countries is no breastfeeding.

Now for the non -viral infections.

Toxoplasmosis.

It is a protozoan.

You get it from eating raw or undercooked meat, or significantly from contact with infected cat feces.

Someone else has to empty the litter box.

Exactly.

Prevention is the entire strategy here.

And finally, Group B Streptococcus, or GBS.

This is a big one.

GBS is a common bacteria that lives naturally in the vaginal or rectal flora of many healthy women.

It is completely harmless to the mom.

But not to the baby.

Right.

If the baby picks it up while passing through the birth canal, it can cause devastating neonatal sepsis pneumonia or meningitis.

So how do we stop it?

We screen every pregnant woman with a vaginal and rectal swab between 35 and 37 weeks.

If she is positive, we treat her with IV penicillin during labor.

We want those antibiotics circulating in her system to temporarily sterilize the birth canal right before the baby comes through.

We have covered an immense amount of ground today.

From the heartbreak of early miscarriage and ectopic pregnancies to the high stakes critical care management of eclanxia and abruptions.

It is a massive amount of pathology.

But bring it all back to that nursing student we visualized at the beginning of the hour.

The mission of the deep dive.

Right.

When you walk into a patient's room, you aren't just looking at a list of textbook numbers.

You are the early warning system.

You are the one who notices that the pitting edema has moved up from her ankles to her shins.

You are the one who realizes that her complaint of heartburn is actually referred liver pain from worsening preeclansia.

You are literally the guardian of two lives.

Exactly.

Pregnancy is usually a beautiful normal physiological process until it suddenly isn't.

And when it isn't, the nurse is the one standing in the gap recognizing the danger.

That is a really powerful place to end.

So to our listener, whether you are cramming for the NCLE -X or just refreshing your daily practice,

trust your assessment skills.

Listen closely to what your patient is telling you.

You've got this.

Absolutely.

Just keep building that foundation of understanding the why.

Thank you from the last minute lecture team.

This has been the deep dive.

Thanks for swimming with us.