Chapter 4: Care of Preoperative and Intraoperative Surgical Patients

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Imagine putting someone into a medically induced culver, paralyzing their muscles, and intentionally causing like massive physical trauma.

Right.

It sounds terrible when you just say it like that.

It really does.

But you are doing all of this to heal them.

And that is the incredible paradox of the operating room is this highly controlled environment where we take a patient to the absolute brink just to fix what's broken.

Yeah, exactly.

So if you are tuning in today, you are likely the nursing student staring down a mountain of perioperative nursing material, trying to figure out how to keep your patients safe through that entire intense journey.

Welcome to this deep dive.

It is a massive responsibility.

I mean, it really is.

And it can feel incredibly overwhelming when you just look at the sheer volume of interventions, risks and protocols.

Oh, absolutely.

Which is why our mission today is to give you a one -on -one tutoring session covering chapter four.

Right.

If we break this down chronologically, you know, moving from the earliest foundational prep work straight through those double doors into the surgical suite,

it stops being a random list of facts.

It becomes a logical step -by -step system of safety nets.

So let's start right at the beginning.

Before we can even look at a single patient chart, we have to understand the language of the OR.

Yeah, staring at a daily surgical schedule looks like reading a completely foreign language at first.

You have all these massive intimidating words.

How does a nurse quickly decipher what is actually going to happen to a patient?

You look for the cheat codes.

Surgical terminology is incredibly systematic.

It's basically modular.

Like Lego blocks.

Exactly like Lego blocks.

Every procedure is built using a standard anatomical stem word attached to a specific suffix.

So once you memorize the core suffixes, you can decode virtually anything on that schedule.

Okay, give us an example.

So for instance, the suffixectomy means cutting out or off.

So an appendectomy is cutting out the appendix.

Okay, so the suffix is the action.

What if the surgeon isn't removing something but just opening it up?

Then you look for otomy, which simply means cutting into, like a thoracotomy is cutting into the chest cavity.

And if they are creating a permanent or semi -permanent outlet,

the suffix is ostomy.

Oh, right.

Like a colostomy, creating an outlet for the colon.

You got it.

And if they are repairing or molding tissue, you'll see plastic, like a mammoplasty for breast revision.

So a rhinoplasty is repairing or molding the nose.

That instantly makes the schedule readable.

And I guess knowing exactly what tissue is being cut or repaired is step one, because the sheer physical trauma of that cutting dictates the patient's recovery.

It does, though the way surgeons cut has completely transformed lately.

We're seeing a massive shift away from traditional open surgeries with those large incisions toward minimally invasive laparoscopic and endoscopic procedures.

Why is the recovery time so drastically different for those?

I was reading that a laparoscopic gallbladder removal goes from a six -week recovery down to just one week.

It comes down to the body's inflammatory cascade.

Yeah.

I mean, your immune system doesn't know the difference between a surgical scalpel and a wild animal attack.

Wait, really?

It just registers trauma.

Exactly.

When tissue is damaged, the body initiates a massive inflammatory response to protect itself.

And that causes severe sweating, pain, and fatigue.

But minimally invasive surgery is different.

Right, because it utilizes tiny puncture holes.

Less physical tissue trauma means a significantly blunted inflammatory response.

Without all that massive swelling and tissue damage to repair,

the post -operative pain is minimal, and the healing timeline just shrinks dramatically.

That actually brings up medical robotics, which takes minimally invasive to an absolute extreme.

The primary surgeon isn't even touching the patient.

Right.

They said it at a computer console.

Yeah.

Looking at a 3D image magnified up to 12 times normal vision, and they control remote instruments, is the main advantage there, just that extreme visual magnification?

Well, the magnification is vital, but the primary clinical benefit is actually mechanical.

How so?

Humans, no matter how skilled the surgeon, have a natural physiologic tremor.

We breathe, our muscles twitch.

So the robot fixes that?

Yes.

The robotic system completely filters out that human tremor.

It possesses rock -steady precision that is simply beyond human dexterity.

When you combine flawless microscopic precision with tiny incisions,

the patient experiences less scarring and a much smoother post -operative course.

Wow.

And since we are causing less tissue trauma, it makes sense that medical science is also changing how we handle blood loss.

Blood management seems to be shifting heavily away from relying on anonymous donor blood.

It has to.

Anytime you introduce a foreign substance into the body, especially someone else's blood, you carry the risk of a transfusion reaction or transmitting blood -borne viruses like hepatitis B, C, or HIV.

So to avoid this, we now use autologous blood transfusions for elective surgeries.

Correct.

Banking one's own blood several weeks before.

But I'm stuck on how that actually works.

If a patient goes to a blood bank and donates their own blood several weeks before their surgery, aren't they just making themselves anemic right before they go to the operating table?

That's the brilliant part of the timing, actually.

By drawing the blood several weeks in advance, you trigger the patient's bone marrow to speed up the production of new red blood cells.

Oh, I see.

Yeah.

And to help this along, we often administer a medication called Epidin Alpha.

You might see it under the brand names Epigen or Procrit.

It stimulates the bone marrow to produce red blood cells much faster than normal.

So by the time the surgery date arrives, their circulating volume has recovered, plus they have a stockpile of their own perfectly matched blood in the bank.

Exactly.

It completely eliminates the fear of a reaction.

But what about entirely bloodless surgery?

Because I know this is a critical option for patients of the Jehovah's Witness faith who cannot accept blood transfusions due to deeply held religious beliefs.

How do you perform a major surgery without a safety net of donor blood?

It requires an intense, highly coordinated strategy.

Beyond just stimulating blood production preoperatively, the surgical team manages the physiological environment during the surgery itself.

What do they do?

Well, they administer hemostatic agents to promote aggressive clotting.

The anesthesiologist might intentionally induce severe hypotension, lowering the blood pressure so the vessels just don't bleed as vigorously when cut.

Wow.

They can also induce hypothermia, cooling the body to slow down the basal metabolic rate, which drastically decreases the tissue's demand for oxygen.

So you are basically slowing down the body's engine so it needs less fuel while you work on it.

Exactly.

But why bloodless surgery isn't just the default for everyone is because it requires meticulous management of the patient's existing medication list.

Right.

The prep is intense.

Very.

Many older adults are on routine antiplatelet or anticoagulant therapies.

To safely perform a bloodless surgery, those medications must be carefully reversed or managed weeks in advance.

Which brings us perfectly to the perioperative nurse's role as a detective.

Before any of this surgical magic can happen, the nurse has to figure out if the patient's body can even survive the stress of the procedure.

The baseline assessment.

Yes.

Establishing baselines.

I always think of this like taking a before picture of a house.

If you walk into a house and it's 90 degrees, you don't know if the AC is broken or if the house is literally on fire unless you knew it was perfectly 72 degrees an hour ago.

That is the exact logic.

If you're caring for a 76 -year -old patient the morning after a hip replacement and they are confused and agitated, you need to know their starting point.

Right.

Is this confusion a life -threatening post -operative complication like hypoxia?

Or is this patient normally disoriented to time and place because of baseline dementia?

Without a documented pre -op baseline for orientation and precise vitals, you're flying blind.

Height and weight must also be exact for anesthesia calculations.

So what are the specific red flags the nurse is hunting for during this detective work?

We know age is a factor, but what is actually changing physiologically in an older adult?

Advanced age brings a natural decline in physiologic reserves.

The heart doesn't pump as strongly and the lungs lose their elasticity.

But the biggest issue for surgery is the liver and the kidneys.

Because they process the drug.

Exactly.

The liver metabolizes the anesthetic drugs and the kidneys excrete them.

In older adults, these organs work much slower, which drastically increases the risk of drug toxicity.

They might not wake up from anesthesia as predictably.

So age is a variable we cannot control.

What about the variables a patient brings on themselves, like their daily habits?

Hydration status is a massive one.

If a patient is chronically dehydrated, their circulating blood volume is low.

This means the kidneys aren't getting enough pressure to filter waste efficiently.

Makes sense.

But more dangerously, dehydration increases blood viscosity.

Thick, sluggish blood significantly predisposes the patient to thrombus or blood clot formation during surgery.

And what about smoking?

We know it's bad for the lungs, but how does it specifically complicate anesthesia?

Smoking paralyzes the microscopic hair -like cilia in the respiratory tract that normally sweep mucus up and out of the lungs.

Oh, that's not good.

No, because when you add the irritating gases of anesthesia, the lungs produce massive amounts of thick secretions.

Without functioning cilia to clear it, that mucus plugs the airways, leading to atelectasis, collapsed alveoli, and eventually postoperative pneumonia.

Let's talk about the medication risks, because this is where the nerves have to be incredibly vigilant.

We already touched on anticoagulants, which must be discontinued 7 to 14 days before surgery to prevent hemorrhage.

Right.

But what about corticosteroids?

Why are they a massive red flag?

Well, corticosteroids are powerful anti -inflammatory drugs.

While that is great for treating asthma or autoimmune conditions, it is terrible for surgery.

Because of wound healing.

Exactly.

The very first stage of wound healing is the inflammatory phase, where white blood cells rush to the incision to fight infection and start rebuilding tissue.

Corticosteroids suppress that entire response.

So they delay healing and increase infection risk.

Yes, they blind the body's immune defense.

And furthermore, you can never stop steroids abruptly before surgery.

They must be tapered carefully to avoid an adrenal crisis.

Good to know.

So to catch all these hidden risks, surgeons rely on a battery of preoperative diagnostic tests.

We are looking at a CBC, a urinalysis, PT and PTT,

and a metabolic panel.

I want to break down why we look at these specific labs.

Sure.

The metabolic panel checks the liver and kidneys, which process the anesthesia.

PT and PTT measure the time it takes for the blood to clot.

If those numbers are prolonged, the patient is at risk for bleeding out on the table.

And the complete blood count is checking the hemoglobin.

I understand there is a strict rule here.

If the hemoglobin level is below 10 grams per deciliter, most surgeons will delay the procedure entirely.

Why 10?

Hemoglobin is the protein in your red blood cells that actually carries the oxygen.

If it's below 10, the patient is anemic, meaning their blood has a significantly reduced oxygen carrying capacity.

And surgery spikes oxygen demand.

Skyrockets it.

Surgery places massive metabolic stress on the body.

If the blood physically cannot carry enough oxygen to meet that spike demand, the patient's heart and brain will be starved of oxygen.

Wow.

Okay, before we move on from the physical assessment, we have to talk about the massive safety alert regarding latex allergies.

How does a standard allergy turn into a lethal intraoperative emergency?

When a patient is awake, they can tell you their throat feels scratchy or their skin is burning.

Under general anesthesia, they are completely unconscious, paralyzed, and draped under sterile sheets.

They can't tell you anything.

Right.

They cannot report the early symptoms of anaphylaxis.

If a latex allergic patient is exposed to a latex catheter or a surgeon's glove, their airway will swell shut and their blood pressure will plummet.

And the team won't know until the monitors start alarming.

So the environment has to be meticulously controlled.

A dedicated, latex -free crash cart checking the tiny rubber stoppers on medication vials.

Every single detail matters.

Precisely.

And once the nurse has identified all these risks through the assessment and lab work, the very next priority is to mitigate them through patient teaching.

Let's look at the physiological basics of teaching.

NPO status,

nil per os nothing by mouth.

I know we usually say a light meal is okay up to six hours before and clear liquids up to two hours before elective surgery, depending on the provider's orders.

Always check the specific orders, yeah.

But what is the actual mechanism of danger here?

Why is food in the stomach so lethal?

Anesthesia completely knocks out your gag reflex and the tone of the esophageal sphincter.

If there is food or liquid in the stomach, it can easily flow backward up the esophagus.

And without a gag reflex.

That stomach acid in food will fall directly into the trachea and down into the lungs.

This is called aspiration and it causes massive chemical burns to the lung tissue and severe pneumonia.

That is terrifying.

Okay, so stomach is empty.

What do we teach them about pain control?

We often use patient controlled analgesia, the PCA pumps.

But wait, if we teach the patient to hit the button and ask for pain medication before the pain becomes severe, aren't we risking them overdosing or becoming addicted?

That is a very common misconception.

PCA pumps are programmed with strict lockouts so a patient physically cannot overdose themselves.

The reason we teach them to hit the button early is based on how pain receptors work.

When a pain signal starts, it's like a tiny flame.

A small amount of medication can easily extinguish it.

But if you wait?

If you wait until the pain is severe, the nervous system is completely overwhelmed.

It takes massively higher doses of narcotics to bring severe pain back under control, which leads to heavy sedation and respiratory depression.

It's always safer to stay ahead of the pain.

That makes incredible sense.

Now we also teach them post -operative physical exercises like flexing and extending the foot or tracing circles with their toes.

How does wiggling your feet help you recover from major surgery?

It utilizes the calf muscle pump.

During surgery and bed rest, blood pools in the deep veins of the legs.

This stasis, or sluggish blood flow combined with the body's increased clotting from surgical trauma, creates the perfect recipe for a deep vein thrombosis.

Wiggling the feet flexes the calf muscles, which literally squeezes those deep veins, forcing the blood back up to the heart and preventing clots.

Then we tackle lung expansion to prevent that atelectasis we talked about earlier.

Using the incentive spirometer, splinting the abdominal incision with a pillow to reduce pain and performing a forced exhalation huff cough.

Can you explain what a huff cough actually is?

Imagine you're trying to fog up a mirror with your breath.

You take a deep breath and forcibly quickly exhale with your mouth open, making a huff sound.

Why not just cough normally?

A traditional cough causes a massive spike in introthoracic pressure, which is incredibly painful on an abdominal incision.

The huff cough keeps the glottis open, moving the mucus up and out of the lungs without that violent, painful pressure spike.

But there are exceptions to this rule, right?

Yes, a critical safety exception.

For patients undergoing eye, ear, nose, throat, spinal, or intracranial surgeries, coughing of any kind is absolutely forbidden.

Because of the pressure?

Yes.

Coughing causes a surge in pressure inside the head and the eyes, which could catastrophically rupture those delicate, microscopic surgical repairs.

I'm curious about the timing of all this education.

Why on earth are we teaching post -up leg choreography and huff coughing before the surgery even happens?

The patient is already terrified.

Wouldn't it be better to teach them when they actually need to do the exercises?

It seems logical to wait.

But physiologically, a post -op patient is in the worst possible state for learning.

They're waking up from anesthesia, their brain is saturated with sedatives they are shivering, and they are in pain.

They just don't have the cognitive bandwidth.

They simply do not.

By teaching them preoperatively, you establish the muscle memory and the conceptual understanding while their brain is clear.

Plus, taking away the mystery lowers their fear.

I was looking at nursing care plan 4 .1 in the chapter about Mrs.

Talbot, a 38 -year -old mother scheduled for a mastectomy.

The nurse identified two distinct problems, her deep fear of the cancer and the bodily disfigurement alongside her utter lack of knowledge about the surgical routine.

And those two problems feed each other.

Fear paralyzes the ability to learn, and the unknown amplifies fear.

How does the nurse address that?

By first establishing trust and validating her emotional terror.

Once that emotional baseline is settled, the nurse provides clear, factual information about the drainage tubes and the recovery routines she will wake up to.

Dispelling the unknown automatically drains the anxiety.

So the teaching is done.

The day of surgery arrives, and we enter the final countdown.

We have immediate physical preparation and the preoperative checklist.

Let's start with the physical prep.

Hospital gown, no underwear, removing dentures and hearing aids, or at least carefully noting if they are left in.

Right.

But why is removing all jewelry, including hidden body piercings, an absolute non -negotiable?

Because of how surgeons cut tissue today.

They use electrocautery devices, which utilize high -frequency electrical currents to simultaneously slice through tissue and instantly cauterize the blood vessels to stop bleeding.

And metal conducts electricity.

Yes, electricity will always seek the path of least resistance to the ground.

If a patient is wearing a metal belly button ring, that metal acts like a lightning rod.

It will attract and concentrate the electrical current, causing deep, severe electrical burns right where the jewelry sits.

Ouch.

That is an image that will stick with me.

This brings us to the checklist itself, figure 4 .3 in the text.

Verifying the ID bracelet perfectly matches the chart, confirming all those diagnostic labs we talked about are attached,

and physically looking to see that the surgeon has used a marker to sign the surgical site on the patient's body to prevent wrong site surgery.

It's the ultimate administrative safety net.

Once that is done, we administer the pre -op medications drugs to dry up secretions, stop nausea and reduce anxiety, and we have the patient sign the surgical consent form.

But let me play devil's advocate here.

If a patient is super anxious, shaking, and can barely hold a pen, why can't I just give them their relaxing pre -op meds first, let them calm down, and then have them sign the legal consent?

Because doing so would invalidate the entire surgery and basically constitute assault.

Informed consent is a strict legal and ethical mandate.

A patient cannot legally comprehend the risks of a procedure or give autonomous consent while under the influence of mind -altering, sedative medications.

Consent must always be obtained while the patient is completely cognitively intact.

Sedation always comes last.

Good to know.

So the consent is signed, the meds are given, the patient rolls down the hallway.

While they are gone, the floor nurse isn't just taking a break.

They have to prep the room for their return.

Yeah.

Raising the bed to stretch your height, grabbing an emesis basin, setting up the IV poles, and having a frequent vital sign sheet ready.

But let's follow the patient, who is actually taking care of them once they cross into the intraoperative environment.

Beyond the surgeon and the anesthesia provider, there are two highly distinct nursing roles in that room, the scrub nurse and the circulating nurse.

How do their responsibilities split?

The scrub nurse is scrubbed in.

They wear the sterile gown and gloves.

They maintain the absolute sterility of the instrument table, pass the tools to the surgeon,

and physically count every single sponge and needle before the patient is sewn up to ensure nothing is left behind.

And the circulating nurse?

The circulating nurse is the unsterile communication link.

They wear regular scrubs and move freely around the room.

They are responsible for patient safety.

They manage the room's communication, tie the surgeon's gowns, and critically, they ensure the patient is positioned perfectly.

Like patting bony prominences.

Exactly.

Patting the joints so the paralyzed patient doesn't wake up with severe pressure injuries or nerve damage.

And while this is happening, the patient is under anesthesia.

A very common approach now is procedural or conscious sedation.

Yes.

Instead of total paralysis and a breathing tube, the patient receives local anesthetics to numb the surgical site, combined with IV sedatives to keep them relaxed and amnestic.

They maintain their own airway.

But there's a risk there, right?

A big one.

Because those IV sedatives profoundly depress the central nervous system, their respiratory drive can fail.

Therefore, according to ASA guidelines, the team is mandated to monitor their carbon dioxide levels using capnography.

That's a graphic representation of exhaled CO2.

Why capnography?

Why not just use a standard pulse oximeter on their finger to measure their oxygen?

Because a pulse oximeter measures oxygenation, which has a massive lag time.

A patient can stop breathing, but the oxygen lingering in their blood will keep the pulse oximeter reading normal for several minutes.

Oh, wow.

Yeah, capnography measures ventilation, the actual physical exhaling of carbon dioxide, in real time.

If the patient stops breathing, the capnography wave drops to zero instantaneously, allowing the team to intervene before the brain is starved of oxygen.

That is a critical distinction.

Are there any alternative non -pharmacologic interventions used in the OR to keep the patient stable?

Actually, music therapy has a proven benefit.

Allowing patients to listen to their preferred music through earphones drastically reduces outside sensory stimulation, the clanking instruments, the alarming monitors.

And that helps.

By lowering that sensory stress, patients actually require significantly less anesthesia and pain medication.

That's amazing.

We have to talk about temperature inside the OR, because this is where severe intraoperative complications can arise.

You have unintentional hypothermia, where the cold OR air and cold IV fluids drop the patient's core temperature.

Which is managed proactively with forced air warming blankets, because hypothermia impairs the blood's ability to clot, leading to increased bleeding and a much higher risk of wound infection.

Right.

But then you have malignant hypothermia.

And this is not just a patient getting too warm under a blanket.

This is an absolute lethal emergency.

What exactly is going wrong physiologically?

Malignant hypothermia is an inherited genetic muscle disorder.

The patient has a defect in their muscle cells' calcium channels.

When they are exposed to certain anesthetic gases or muscle relaxants, massive amounts of calcium flood into the muscle cells.

And what does that do?

It causes sustained extreme muscle contractions.

Their metabolism skyrockets out of control.

Wait.

So the surgeon might actually want you to have controlled hypothermia, like we talked about for bloodless surgery.

But malignant hypothermia is an uncontrolled reaction.

So their body is essentially sprinting a marathon while lying perfectly still on the table.

Exactly.

It's a completely uncontrolled genetic reaction.

The signs are severe muscle rigidity, a racing heart rate, and a body temperature that can climb one degree every five minutes, reaching lethal levels incredibly fast.

How do you even fix that?

The only intervention is immediately discontinuing the anesthesia.

You hyperventilate the patient with 100 % oxygen,

aggressively cool the body with ice packs and cold IV fluids, and administer a specific antidote to stop the calcium release.

The stakes in that room are unfathomable.

We have covered an immense journey today.

If you are listening to this, you have decoded the foundational surgical terms, you've investigated the profound preoperative detective work regarding aging, dehydration, and medications.

You've mastered patient education, the checklist safety nets, and those high stakes OR complications.

You really have the clinical reasoning you need.

As you review this material, I want to leave you with a final thought to mull over.

Consider how the perioperative nurse is the ultimate patient advocate.

When a patient is pushed through those OR doors and goes under anesthesia, they literally surrender their voice, their mobility, and their bodily autonomy to your team.

It's so true.

The checklists you complete, the careful padding of their joints, the vigilant monitoring of their exhaled breath,

these aren't just administrative tasks to memorize.

They are the ultimate act of protecting a human being who, in that moment, is entirely incapable of protecting themselves.

That is exactly why we do this.

On behalf of everyone here, a warm thank you from the Last Minute Lecture team.

Good luck on your exam, and we'll see you next time.