Chapter 15: Perioperative Nursing Care

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Welcome back, Lerner.

So when we think about surgery, we tend to expect this absolute mechanical precision.

A failing valve is swapped out or a tumor is excised, the surgeon steps back and the problem is fixed.

I mean, it's comforting to view the human body like an engine in a repair shop.

It is comforting, but the reality of perioperative nursing care is that fixing the anatomy is really only a fraction of the battle.

The second that scalpel drops, the nurse inherits a massive physiological shockwave.

The body doesn't know it's being fixed.

It only knows it's been stabbed, sedated and traumatized.

Wow.

Yeah, that's a wild way to think about it.

And our mission today for this deep dive is mastering how to manage that shockwave.

We are conquering chapter 15 of the Saunders Comprehensive Review for the NCLEX -RN examination, the ninth edition.

Exactly.

And mastering this chapter isn't just about memorizing some checklist of interventions.

It's about building your clinical reasoning.

Because you have to anticipate how the body's systems will either overreact or completely underperform.

Right.

That is exactly what the NCLEX is trying to measure.

It tests whether you understand the physiological why behind all these rules.

Yeah.

If you understand the foundation, well, that drives your priority decisions.

And those decisions are what keep a destabilized patient alive.

So let's trace the patient's journey starting before they even see the operating room.

Preoperative care.

Right, because preop preparation directly prevents post -op disasters.

And the very first hurdle here is informed consent.

Now, we know the surgeon is legally responsible for explaining the procedure, the risks, the alternatives.

But the nurse is the one standing at the bedside with the clipboard.

Yeah, and your role there is cure advocacy.

You are witnessing the signature, sure.

But more importantly, you are verifying comprehension.

I always compare it to signing a mortgage.

Like you shouldn't sign if you don't actually know the terms.

That's a great analogy.

I mean, if a patient signs the consent form, the surgeon walks out and the patient looks at you and says, so they're just making the tiny incision, right?

And you know they're scheduled for a massive open procedure.

Well, you must halt the prep.

You can just say, well, the signature's on the line.

Let's roll.

Exactly, you stop the line.

You notify the surgeon to return and clarify.

You are the ultimate safety net against a patient agreeing to a physical trauma they don't actually understand.

Makes total sense.

So once consent is locked in, we move to the physical prep.

And a major part of that is MPO status fasting, usually six to eight hours before general anesthesia or maybe three hours for local.

I wanna look at the compounded physiological effect of that because being MPO means the patient is rolling into surgery already mildly dehydrated.

That's a really critical connection to make.

So they're fluid depleted, then you administer general anesthesia, which by the way is a massive systemic vasodilator.

Meaning the blood vessels relax and widen.

Yes, so if you have a widened vascular system with a depleted fluid volume, what happens to the blood pressure?

It just totally bottoms out.

Precisely.

That's why preoperative IV fluid management isn't just about hydration.

It's about maintaining enough intravascular volume to prevent hypertensive shock when the anesthesia hits.

And at the same time, the MPO rule is totally non -negotiable because anesthesia paralyzes the gag reflex.

Yeah, if there is anything in the stomach, the relaxation of the esophageal sphincters allows gastric contents to travel straight up and into the lungs.

Aspiration pneumonia, which is catastrophic.

Absolutely catastrophic.

Okay, speaking of preventing post -op disasters,

chapter 15 places a massive emphasis on proactive client teaching.

This is box 15 .1, teaching them how to deep breathe, how to cough, how to use the incentive spirometer.

And gastrocnemius pumping.

Right, flexing the calf muscles.

But all this teaching has to happen before they go into surgery.

Yes, because cognition and compliance just plummet once the patient wakes up.

I mean, that makes sense.

If someone has a fresh eight inch abdominal incision and they're shivering and in pain, their brain isn't going to absorb a lesson on respiratory mechanics.

Not at all.

You have to build that muscle memory and that understanding while they are alert and pain -free.

Now balancing their baseline medications before surgery, box 15 .3 and 15 .4, this is where clinical reasoning really gets tested because it's full of paradoxes.

It really is.

Like take a diabetic patient on insulin.

I mean, you might instinctively think, well, they're diabetic so we always just give them their normal basal insulin before surgery.

But you can't.

Because they're NPO, their caloric intake is zero.

Giving them their normal dose could throw them into profound hypoglycemia while they are unconscious on the table.

Oh, wow.

Okay, so we just hold the insulin.

Well, no, you can't just blindly withhold it either because surgery triggers the body's ultimate stress response.

The sympathetic nervous system floods the body with cortisol and epinephrine.

Right, the fight or flight response.

Exactly.

And cortisol stimulates glycogenolysis.

The liver dumps stored glucose into the blood to provide energy to fight the trauma.

Add in IV fluids that might contain dextrose.

And a patient who has been fasting could suddenly have a blood glucose of 300.

That's crazy.

So the insulin protocol has to be incredibly dynamic,

like tailored to real -time capillary blood glucose checks rather than just following their at -home regimen.

Exactly, it's highly individualized.

Now, apply that same stress response logic to corticosteroids like prednisone.

Long -term steroid use causes the adrenal glands to atrophy because the body is getting the hormones synthetically right.

So their natural stress response system is essentially asleep.

Yes.

When the massive trauma of surgery occurs, their dormant adrenal glands cannot produce that surge of cortisol needed to maintain blood pressure and vascular tone.

Oh, I see where this is going.

Yeah.

So to prevent cardiovascular collapse, their corticosteroid dosages often need to be temporarily increased via IV during the perioperative period.

That is fascinating.

We also have to manage anticoagulants.

The chapter notes aspirin is typically stopped 48 hours prior, but clopidogrel is stopped a full five days prior.

That timeline isn't just arbitrary, right?

It's tied to the lifespan of a platelet.

Right.

Clopidogrel irreversibly alters the platelet.

And since platelets live for about seven to 10 days, you need those five days of discontinuation to allow the bone marrow to generate enough fresh, fully functioning platelets.

So the patient can actually clot when the surgeon makes the incision.

Precisely.

Also, quickly, shaving the operative site, we only do that if prescribed, and right at the operative area to prevent microabrasions that could harbor bacteria.

Good safety point.

Yeah.

Okay, so the prep is done, the meds are balanced, and the patient rolls through the double doors into the operating room.

The environment shifts completely here.

It does.

The focus moves from long -term preparation to immediate active verification.

This is where we prevent irreversible errors.

Right, so the OR nurse verifies the ID bracelet against the patient's verbal response and the chart, and the surgeon meets the client pre -op to physically mark the operative site on the skin with a pen.

Do they really just use a marker on the patient?

They absolutely do.

It removes ambiguity.

And then before the first cut, there is the mandatory timeout.

Is a timeout actually like a sports timeout where everyone literally stops what they're doing?

Yes.

Everyone in the room, the surgeon, the anesthesiologist, the circulating nurse, the scrub tech, everyone stops.

They verbally confirm the correct client, the correct procedure, and the correct marked site.

It flattens the medical hierarchy, does it?

It does, and that's the psychological genius of it.

Historically, operating rooms had these really rigid hierarchies.

A scrub tech might notice something is wrong, but feel way too intimidated to correct an attending surgeon.

Right.

The timeout creates a mandatory protocol -driven space where every single person is required to verify the plan.

It empowers anyone to speak up, which directly prevents catastrophic wrong site errors.

Wow, okay, so the surgery happens.

The mechanical fix is done.

The surgeon closes the incision and steps away.

Yeah.

But the second the anesthesia starts wearing off, the nurse inherits a highly vulnerable,

completely destabilized system.

The immediate aftermath.

Yeah, the patient rolls into the post -anesthesia care unit, the PACU, was the very first thing you're looking for.

You fall right back onto your ABCs.

Airway is the undisputed priority, always.

Right.

When a patient is extubated but still lethargic, the residual muscle relaxants and anesthetics mean the pharyngeal muscles are just slack.

The tongue can easily fall back and occlude the airway.

I always compare a patient waking from anesthesia to rebooting a sluggish computer.

You know, you wiggle the mouse, but it takes a minute for the hard drive to spin up and the background systems to come back online.

I love that analogy.

You have to carefully watch every background system, respiratory, renal, GI, come back online to make sure nothing crashes.

And the nurse is the system administrator.

Exactly.

You're listening to the breath sounds.

If you hear stridor, which is this high -pitched crowing sound that's a massive red flag for an obstruction or laryngeal spasm, or crackles, which indicates atelectasis.

And if oxygen saturation drops below 95 %?

You must intervene immediately.

Maybe reposition the head or use a jaw thrust maneuver to pull that tongue forward.

Okay, so while the respiratory system is booting up, we're checking the cardiovascular and renal systems.

We monitor bleeding, pulses, and VTE risk.

Right, using those sequential compression devices, the SCD.

And positioning is key here too, right?

Low Fowler's position to expand the thorax, turning them every one to two hours.

But if they're comatose, we put them on their side to protect the airway.

Perfect clinical reasoning.

Let's talk about renal.

We look closely at urine output.

They need to void within six to eight hours post -op, right?

At least 200 millirail total.

But the hourly benchmark is 30 millimerela per hour.

Why is that specific number the golden rule?

Because urine output is the most accurate non -invasive window into systemic perfusion.

Oh, interesting.

Yeah, if the kidneys are producing at least 30 millimerela an hour, it means the heart is pumping with enough pressure to force blood through the renal arteries.

So if output drops below 30 millimerela.

It means cardiac output has fallen.

The body is shunting blood away from the kidneys to protect the brain and heart, or there is a severe fluid deficit.

It's an early warning system for hypovolemic shock.

That makes total sense.

And for the GI tract, we keep them NPO until the GAG reflex returns, and we hear bowel sounds or they pass flattest.

Right, verifying peristalsis has returned.

We also have to assess the surgical wound.

The chapter uses the RIDA acronym.

Redness, erythema, ecumosis, drainage, and approximation.

Now, a little redness is expected right at the incision line, right?

Because of the inflammatory cascade.

Exactly.

Vasodilation brings white blood cells to heal the tissue, but normal inflammation stays localized.

We're looking for abnormal spreading.

Right.

If the redness is tracking outward or the drainage shifts from clear, serious to purulent, you're looking at an infection.

An approximation just means assessing how tightly the wound edges are knit together.

Spot on.

And differentiating clean from sterile technique is vital here during dressing changes.

Okay, which brings us to section four.

Postoperative complications.

Recognizing the red flags.

The glitches and crashes of the post -op period.

Let's look at the respiratory complications first.

Atelectasis versus pneumonia.

This is a huge NCLEX focus.

They both impair oxygen exchange, but the mechanisms and the timing are entirely different.

Atelectasis is mechanical.

Meaning the collapse of the tiny air sacs, the alveoli.

Yes.

It usually happens one to two days post -op because the patient is in pain, they're taking shallow breaths, and they're just not moving.

I picture the alveoli like wet balloons.

If you don't inflate them fully, the wet insides just stick together and they deflate.

That's perfect.

And the treatment is mechanical too.

The incentive spirometer.

It forces the patient to take a deep, sustained breath that literally pops those sticky balloons back open, plus early ambulation.

Okay, but pneumonia, on the other hand, is infectious.

It usually develops later, around three to five days post -op.

Right, that's when those wet balloons aren't just stuck together, they're actually filling up with inflammatory fluid and bacteria.

It requires antibiotics.

Let's move to circulatory crashes.

Pulmonary embolism, or PE.

We know surgery increases PE risk, but why?

It's the perfect storm of Virchow's triad.

First, you have venous stasis because the patient is immobilized.

Second, vessel wall injury from the surgical trauma.

And third, the body is in a hypercoagulable state because the stress response increases clotting factors to stop the surgical bleeding.

So a clot forms in the deep veins of the legs, breaks loose, travels up through the right side of the heart and slams into the pulmonary artery.

Yes, and suddenly, blood can't reach the lungs to get oxygenated.

The patient has sudden severe dyspnea and sharp chest pain.

It is an absolute life -threatening emergency.

This is why we are so aggressive with SCDs and early ambulation.

Exactly.

Now, what about hypovolemic shock?

Usually from massive fluid loss or hemorrhage, their blood pressure crashes, heart rate skyrockets.

The standard nursing intervention is to elevate the legs to shunt venous blood back to the vital organs.

But the text highlights a massive exception for patients who had spinal anesthesia.

Yes, this is so important.

Spinal anesthetics are heavy liquids, right?

Their movement in the spinal canal is influenced by gravity.

If a patient recently had spinal anesthesia and you elevate their legs too high or put them in trundellenberg, that anesthetic block can travel higher up the spinal cord.

Oh, wow.

And if it travels high enough, it paralyzes the diaphragm muscles.

Exactly.

You're trying to trait shock, but you inadvertently paralyze their ability to breathe.

For spinal anesthesia patients, you only elevate the legs slightly on a pillow.

That is a phenomenal piece of clinical reasoning to keep in mind.

We also have to watch for thrombophlebitis, inflammation, and clotting in the leg veins.

The protocol says to elevate the extremity 30 degrees, but it explicitly warns, do not dangle the legs.

Right.

Dangling the legs puts pressure right behind the knees in the popliteal space.

That pressure acts like a tourniquet, making the pooling and clotting significantly worse.

Okay, moving to the GI and GU systems,

paralytic ileus and urinary retention.

A paralytic ileus is when the bowel essentially refuses to wake up.

Yeah, it remains paralyzed while gastric secretions just keep piling up above it.

You'll see vomiting, severe distension, and absent bowel sounds.

And the treatment.

Immediate decompression.

Keep them NPO and drop a nezogastric tube to suction out the fluid and air.

Give the bowel time to rest.

And with urinary retention, the kidneys are making urine, but the bladder muscle is too relaxed from anesthesia to expel it.

If you percuss the bladder, it sounds like a drum.

Now we must discuss the most dramatic wound complications.

Dehescence and evisceration.

Dehescence is the separation of the wound edges.

Evisceration is when the internal organs actually protrude through that opened incision.

It's a true medical emergency.

Let's talk about the immediate response to evisceration because honestly, if I walk in and see a loop of bowel protruding, my instinct would be to gently push it back in or maybe put some ice on it to stop the swelling.

Is that right?

Oh no, absolutely not.

Stop right there, never push it back in and do not use ice.

Wait, really?

Why no ice?

I thought ice was good for swelling.

Well, ice causes extreme vasoconstriction.

Those exposed loops of bowel are already incredibly vulnerable and at high risk of losing their blood supply.

If you apply ice, you actively choke off arterial flow and you will cause rapid tissue necrosis.

Oh wow.

Okay, and why can't we just gently push it back inside?

Because pushing the organs back introduces massive amounts of bacteria deep into the sterile peritoneal cavity.

It's practically guaranteeing peritonitis plus you risk perforating the bowel.

Okay, so no pushing, no ice.

What is the actual clinical judgment box sequence of actions?

First, call for help immediately but do not leave the client alone.

Stay with them.

Place them in a low Fowler's position with their knees bent.

Ah, because extending the legs pulls the abdominal muscles tight.

Bending the knees introduces slack to the abdominal wall, reducing the tension on the wound.

Spot on.

Then you cover the exposed organs with a sterile dressing soaked in warm sterile normal saline.

This keeps the tissue moist and viable.

Take vital signs to monitor for shock and prep the patient to go straight back to the OR.

Wow.

Okay, so once a patient safely navigates the recovery period without these complications,

we prepare for ambulatory care and discharge?

Sending them home safely.

Right, but we don't just wave goodbye.

There are strict physiological criteria they must meet.

They must be alert, have successfully voided, have minimal pain and bleeding, no vomiting,

and crucially have a responsible adult to drive them home.

Yes, and discharge teaching is huge here.

Box 15 .7, do not lift more than 10 pounds for abdominal incisions.

Eat a diet high in protein, calories, and vitamins to promote healing.

Sutures or staples are usually removed seven to 14 days after surgery.

Let me ask you about the anesthesia rules.

Say a patient had a one -day stay, a minor procedure under general anesthesia.

It's been eight hours, they feel totally fine.

Can they just call an Uber and leave?

No, if they receive general anesthesia, there is a strict 24 -hour rule against driving or signing legal documents.

Even if they feel totally lucid.

Even then, general anesthetics are highly lipid soluble.

They absorb into the body's fat tissue and slowly leach back out into the bloodstream over time.

Their reaction times and judgment remain chemically compromised.

The focus is always on verifiable safety and a proper support system at home.

Okay, section six, putting it into practice.

Let's tackle some of the actual NCLEX practice questions at the end of the chapter to prove we've mastered this clinical reasoning.

Let's do it.

Question one is about post -op assessment priorities.

You walk into a room, the patient arrived from the PCU an hour ago, they have a slight temperature of 99 .5, a small amount of clear series drainage, blood pressure is 105 over 70, and their urinary output over the last hour was 20 LMA.

Where is your immediate focus?

Think about the benchmarks we discussed.

Well, the temperature is a normal response to surgical trauma.

Serious drainage is expected, BP is stable, but that urinary output, 20 ml at an hour, we know the 30 ml per hour rule.

That 20 LML is a blaring alarm that cardiac output is dropping.

Exactly, the kidneys are shutting down to conserve volume.

You bypass the distractor data to find the priority.

Let's try.

Question four,

a patient with a gastric ulcer needs surgery, but is already on opioid analgesics.

How do we get informed consent?

Well, you cannot get consent from a sedated patient.

Opioids alter cognition.

Right, so what's the action?

You must obtain telephone consent from a family member, and the crucial safety net there is that the telephone consent must be witnessed by two people, two nurses.

Perfect, okay.

Question 12, PCU transfer priority.

A patient arrives from the PACU.

What is the first action?

Check dressings, get vital signs.

I mean, getting a baseline set of vital signs feels really important, it gives you a baseline to track.

It's important, yes, but think about your ABCs.

Airway, breathing, circulation.

Right, assessing airway patency is always the very first step, because if their airway is occluded by their own relaxed tongue, a baseline blood pressure is useless because they're gonna code in three minutes.

Exactly, airway first, always.

And you know, that brings us to a final thought.

I want the learner to really mull over.

When you study this specialty, it's so easy to get mesmerized by the high stakes drama of surgery.

The scalpels, the sterile fields, the massive eviscerations, but look closely at what actually keeps the patient alive post -operatively.

The mundane tasks.

Yes, handing a patient a plastic incentive spirometer prevents a systemic lung infection.

Checking an ID band prevents a wrong site surgery.

Listening to bowel sounds tells you if the digestive tract is paralyzed.

Elevating a leg 30 degrees stops a fatal blood clot.

The most basic nursing interventions are actually the primary defense against life -threatening complications.

The mundane tasks are the lifesavers.

The surgical engineering fixes the anatomy, sure, but the clinical reasoning of the nurse stabilizes the human being.

That is the absolute essence of safe nursing practice.

Well said.

Learner, trust your clinical reasoning on exam day.

Remember the physiological why behind the rules.

Keep your eye on that 30 mLb -ol per hour.

Protect that airway.

And never, ever put ice on an evisceration.

From all of us at the Last Minute Lecture Team, thank you for letting us be part of your NCLE -X journey.

Keep studying, stay curious, and we will see you on the next Deep Dive.