Perioperative Care

Surgery is a controlled injury. From the moment a patient signs consent to the day their incision heals, the nurse is the constant thread of safety weaving through a process that involves anesthesia, sharp instruments, altered physiology, and a patient who is, for a critical window, completely unable to protect themselves. Perioperative nursing is where vigilance saves lives quietly — the correctly verified allergy, the counted sponge, the early recognition of a falling blood pressure in the recovery room.

Perioperative care spans three phases: preoperative (from the decision to operate until transfer to the operating table), intraoperative (from transfer until admission to the post-anesthesia care unit), and postoperative (from PACU admission through recovery and discharge). Whether you work on a surgical floor, in the OR, or in PACU, understanding the whole arc makes you a far safer and more useful nurse — and it is heavily tested on NCLEX.

Learning Objectives

• Describe the three phases of the perioperative period and the nurse's priorities in each.
• Perform and document a focused preoperative assessment, including surgical risk factors and informed-consent responsibilities.
• Differentiate the roles of the circulating nurse and the scrub nurse and explain the surgical safety checklist and sterile field principles.
• Provide safe PACU and postoperative care, including airway, hemodynamic, pain, and wound management.
• Recognize and respond to common and life-threatening postoperative complications.
• Apply patient safety priorities (right patient, right site, VTE prophylaxis, fall risk) that dominate NCLEX questions.

Quick Answer

Perioperative care is nursing across the pre-, intra-, and postoperative phases of surgery. Preoperatively, the nurse verifies consent, completes assessment and teaching, confirms NPO status, and reduces risk (allergies, anticoagulants, glucose). Intraoperatively, the circulating nurse manages the room and advocates outside the sterile field while the scrub nurse maintains the sterile field and passes instruments; both are guardians of the surgical count and Time-Out. Postoperatively, priorities follow ABCs — airway and breathing first, then circulation (bleeding, hypotension), then level of consciousness, pain, and wound care. The nurse continuously watches for hemorrhage, respiratory depression, atelectasis, VTE, infection, and paralytic ileus. Safety — correct patient, correct site, and preventing errors while the patient cannot advocate — is the unifying theme.

Where It Came From

For most of human history, surgery was a last resort performed at speed on a screaming, conscious patient — success was measured in how fast a limb could come off before the patient died of shock or blood loss. Two nineteenth-century revolutions made modern surgery, and therefore perioperative nursing, possible.

The first was anesthesia. In 1846 at Massachusetts General Hospital, William Morton publicly demonstrated ether anesthesia. Suddenly surgery could be slow, deliberate, and precise — but a patient who feels nothing also cannot protect their own airway, position, or safety. Someone had to watch over the unconscious body. The second revolution was antisepsis and asepsis. Ignaz Semmelweis showed in the 1840s that handwashing slashed deaths from childbed fever; Joseph Lister applied Louis Pasteur's germ theory in the 1860s with carbolic acid to prevent wound infection. Surgery's greatest killer shifted from pain and bleeding to sepsis — and preventing infection required disciplined, trained personnel.

Florence Nightingale had already established during the Crimean War (1854) that trained nursing, sanitation, ventilation, and observation dramatically cut surgical and battlefield mortality. As surgery grew more complex, hospitals needed nurses dedicated to the operating room — the origin of the scrub and circulating roles. Through the twentieth century the specialty formalized (the Association of periOperative Registered Nurses, AORN, formed in 1949). The modern era's defining contribution is the WHO Surgical Safety Checklist (2008), which proved that a simple structured pause — verifying patient, site, allergies, and counts — reduces surgical deaths and complications worldwide. The through-line across 175 years is a single need: someone must protect the patient who cannot protect themselves. That is the nurse.

Preoperative Phase: Preparing the Patient and Reducing Risk

The preoperative nurse turns a vulnerable patient into a prepared one. Key responsibilities:

Informed consent. The surgeon is responsible for explaining the procedure, risks, benefits, and alternatives. The nurse witnesses the signature, confirms the patient understands and is signing voluntarily, and verifies the patient is competent and not impaired by sedatives. If a patient cannot describe what they are having done, stop and notify the surgeon — do not proceed. Consent must be signed before any pre-op sedation is given.

Focused assessment. Verify allergies (including latex and iodine/shellfish), current medications, and past anesthesia reactions. Two red flags to escalate:

• Anticoagulants/antiplatelets (warfarin, apixaban, clopidogrel, even high-dose aspirin) increase bleeding risk and are often held for days pre-op — confirm the plan.
• A personal or family history of malignant hyperthermia or serious anesthesia reaction must be flagged to anesthesia.

Assess baseline vitals, cardiac and respiratory status, glucose (diabetics), renal and hepatic function, mobility, and cognition. Smoking, obesity, advanced age, and diabetes all raise complication risk.

NPO status. Standard guidance is nothing by mouth to reduce aspiration risk — commonly about 8 hours for solids/heavy meals and 2 hours for clear liquids, per facility and anesthesia protocol. A patient who ate breakfast before an elective case may have surgery delayed; report it rather than hide it.

Preoperative teaching (a nursing power tool). Teach turning, coughing, deep breathing, incentive spirometer use, splinting the incision, early ambulation, and pain-management expectations before surgery, when the patient can actually learn. This teaching directly prevents atelectasis, pneumonia, and VTE.

The pre-op checklist: consent signed, identification band on, allergies documented, NPO confirmed, labs and imaging on chart, dentures/jewelry/prostheses/contacts removed, void or Foley, site marked by surgeon, VTE prophylaxis (SCDs, pre-op heparin per order), and pre-op antibiotics timed to start within 60 minutes before incision.

Intraoperative Phase: The Sterile Field and the Team

Inside the OR the patient is asleep, positioned, and exposed. Two nursing roles anchor safety.

Circulating nurse (unsterile, RN). The manager and advocate of the room. Does not scrub in. Verifies consent and Time-Out, manages documentation, positions the patient safely (preventing nerve injury and pressure ulcers), monitors the sterile field for breaks, obtains supplies, manages specimens, and co-leads the surgical count. The circulating nurse is the patient's voice in a room where the patient has none.

Scrub nurse/tech (sterile). Scrubs, gowns, and gloves; sets up and maintains the sterile field; passes instruments to the surgeon; and keeps track of sharps, sponges, and instruments with the circulator.

Sterile field principles (high-yield):

• Only the front of the gown from chest to sterile-field level and the sleeves from cuff to a few inches above the elbow are sterile.
• Anything below the waist or table level is unsterile — keep hands above waist and in sight.
• The 2.5 cm (1-inch) edge of any sterile drape is considered contaminated.
• If in doubt about sterility, consider it contaminated and replace it.

The surgical count. Sponges, sharps, and instruments are counted before the case, before closing a cavity, and at skin closure. A retained surgical item is a "never event." If a count is incorrect, the team searches and may X-ray before closing — the nurse does not simply proceed.

Time-Out / WHO Checklist. Before incision, the entire team pauses to confirm correct patient, correct procedure, correct site (and side), allergies, antibiotic and VTE prophylaxis, and equipment. This structured pause is one of the single most effective safety interventions in medicine.

Worked example — a broken glove. Mid-case, the scrub nurse feels a glove tear. Correct action: step back from the field, have the circulator help re-glove (and re-gown if the field was touched), because a breach in sterility is treated as contamination until corrected. Continuing "because it's just a small tear" risks a surgical site infection the patient will feel days later.

Postoperative Phase: Recovery and Watching for Trouble

PACU (immediate recovery). Priorities follow the ABCs. Airway first: the patient may still be sedated and at risk for obstruction — position to maintain airway, apply oxygen, monitor SpO2 and respiratory rate for respiratory depression (especially with opioids and residual anesthesia). Then circulation: monitor BP, heart rate, and the surgical site for bleeding. Then neuro status, temperature (watch for hypothermia and shivering, or the rare but deadly hyperthermia), pain, and nausea. Discharge from PACU uses scoring criteria (e.g., Aldrete score) assessing activity, respiration, circulation, consciousness, and oxygen saturation.

On the surgical unit. Continue frequent vitals, then space them out as the patient stabilizes. Ongoing priorities:

• Respiratory: incentive spirometry, turn-cough-deep-breathe, early ambulation to prevent atelectasis and pneumonia.
• Circulatory/VTE: SCDs, prophylactic anticoagulation, and early mobilization to prevent deep vein thrombosis and pulmonary embolism.
• Fluids/electrolytes and urine output: expect at least about 0.5 mL/kg/hr of urine; report oliguria.
• GI: monitor for return of bowel sounds and passage of flatus; paralytic ileus (absent bowel sounds, distension, no flatus) is common after abdominal surgery.
• Wound: assess drainage, incision integrity, and signs of infection.
• Pain: control it — uncontrolled pain limits deep breathing and ambulation, worsening every other complication.

Case vignette. Four hours post-op from an abdominal hysterectomy, a patient's BP drifts from 120/78 to 92/60, heart rate rises to 118, and she is restless and cool. The dressing looks dry — but you check underneath and beneath her on the sheets and find pooling blood. This is early hemorrhagic shock: tachycardia and restlessness precede a large blood pressure drop. Correct action: apply pressure/reinforce the dressing, increase IV fluids per protocol, place in a flat or slightly leg-elevated position, give oxygen, and notify the surgeon immediately. Recognizing subtle early signs — not waiting for a crashing pressure — is what defines a strong post-op nurse.

Real-World Applications

• The floor nurse who insists a warfarin patient's INR is confirmed before surgery prevents an intraoperative bleeding crisis.
• The PACU nurse who keeps a groggy patient's airway open in the first ten minutes prevents a hypoxic catastrophe.
• Preoperative teaching you give the day before is why your patient uses their incentive spirometer at 2 a.m. and avoids pneumonia.
• Ambulation on post-op day one — often nurse-driven — is one of the most powerful interventions against VTE and ileus in all of surgery.
• The Time-Out you refuse to rush through is the reason a wrong-site surgery does not happen on your watch.

Common Mistakes

1. Believing the nurse "gets consent." Wrong and unsafe: the surgeon obtains informed consent by explaining the procedure and risks; the nurse witnesses the signature and confirms understanding. If the patient can't explain the surgery, notify the surgeon — never coach them through it or proceed.

2. Giving pre-op sedation, then having consent signed. A sedated patient cannot give valid informed consent. Consent must be complete and signed before sedatives are administered.

3. Waiting for a big blood-pressure drop to call hemorrhage. Early shock shows as tachycardia, restlessness, cool clammy skin, and narrowing pulse pressure — hypotension is a late sign. Waiting for it wastes the window to intervene. Assess under dressings and under the patient for hidden bleeding.

4. Treating absent bowel sounds post-op as "nothing to worry about." Prolonged absence with distension and no flatus signals paralytic ileus; feeding into an ileus causes vomiting and aspiration risk. Report it and keep the patient NPO until the plan is clarified.

5. Under-treating pain "to be safe." Uncontrolled pain stops patients from deep breathing and walking, directly causing atelectasis, pneumonia, and VTE. Balance opioid safety (watch respirations) with adequate multimodal analgesia.

Comparison and Connections

Feature	Circulating Nurse	Scrub Nurse/Tech
Sterile?	No (unsterile)	Yes (scrubbed in)
Main role	Manages room, advocates, documents	Maintains sterile field, passes instruments
Handles specimens	Yes	Passes to circulator
Positions patient	Yes	Assists
Must be an RN	Yes	RN or surgical tech

Phase	Time span	Top nursing priority
Preoperative	Decision to operate to OR table	Consent, assessment, teaching, risk reduction
Intraoperative	OR table to PACU	Sterility, count, Time-Out, positioning, safety
Postoperative	PACU through recovery	ABCs, bleeding, pain, complication prevention

The perioperative period connects tightly to pharmacology (anesthetics, opioids, anticoagulants), fluid and electrolyte balance, wound healing, and infection control. Early recognition of deterioration draws on your health-assessment skills.

Practice Questions

Recall

Q: Who is legally responsible for obtaining informed consent for surgery, and what is the nurse's role? A: The surgeon (the provider performing the procedure) obtains informed consent by explaining the procedure, risks, benefits, and alternatives. The nurse witnesses the signature and confirms the patient understands and is signing voluntarily. Rationale: consent is tied to the provider's duty to disclose; nurses cannot substitute their explanation for the surgeon's.

Understanding

Q: Why is preoperative teaching about coughing, deep breathing, and incentive spirometry more effective when given before surgery than after? A: Before surgery the patient is alert, pain-free, and able to learn and practice. Postoperatively they are sedated and in pain, making learning harder. Rationale: pre-op mastery means the patient can actually perform these lung-expansion techniques when they matter, preventing atelectasis and pneumonia.

Application

Q: A patient is scheduled for surgery at 0900. At 0700 the nurse learns the patient drank a cup of coffee with cream at 0630. What is the priority action? A: Notify the surgeon and anesthesia provider immediately and do not proceed until they decide. Rationale: recent intake (cream is not a clear liquid) increases aspiration risk under anesthesia; the case may be delayed. The nurse must report, not conceal or ignore, the NPO violation.

Analysis

Q: Two hours post-op, a patient has HR 116, BP 94/62 (from 124/80), is restless, and has cool, pale skin, but the abdominal dressing appears dry. What is the nurse's interpretation and priority? A: These are early signs of hypovolemic/hemorrhagic shock; the dressing being dry does not rule out internal bleeding or blood pooling beneath the patient. Priority: assess under the patient and dressing, give oxygen, increase IV fluids per protocol, and notify the surgeon immediately. Rationale: tachycardia and restlessness precede hypotension; acting early prevents decompensation.

FAQ

Is perioperative nursing the same as OR nursing? No. OR (intraoperative) nursing is one phase. Perioperative nursing spans pre-op, intra-op, and post-op care. Many nurses specialize in one phase, but understanding all three makes you safer in any.

Can a patient withdraw consent after signing? Yes. Consent is voluntary and can be withdrawn at any time before the procedure. If a patient expresses doubt or wants to stop, halt and notify the surgeon — proceeding against a competent patient's refusal is battery.

What is the single most important thing to assess first in the PACU? Airway and breathing. A patient emerging from anesthesia and opioids is at high risk for airway obstruction and respiratory depression. ABCs always lead.

Why do we stop anticoagulants before surgery but sometimes give heparin? Therapeutic anticoagulants (like warfarin) are usually held to reduce intraoperative bleeding. Low-dose prophylactic heparin or enoxaparin, plus SCDs, may be used to prevent VTE, which is a major post-op risk. The two goals — avoiding bleeding and preventing clots — are balanced by the surgical and anesthesia team; follow the specific orders.

What is a "never event" in surgery? A serious, largely preventable error that should never occur, such as wrong-site surgery or a retained surgical item (sponge/instrument). The Time-Out and the surgical count exist specifically to prevent these.

How soon should a post-op patient get out of bed? Often within hours, as ordered and tolerated. Early ambulation is one of the strongest interventions to prevent VTE, pneumonia, and ileus. Assess safety first: orthostatic vitals, pain control, and fall risk.

Quick Revision

• Three phases: preoperative, intraoperative, postoperative.
• Consent: surgeon explains/obtains; nurse witnesses; sign before sedation.
• NPO: commonly ~8 hr solids, ~2 hr clear liquids (per facility/anesthesia).
• Circulating nurse: unsterile, manages room, advocate, RN. Scrub: sterile, passes instruments.
• Sterile field: 1-inch drape edge is contaminated; keep hands above waist; when in doubt, it's contaminated.
• Count sponges/sharps/instruments before, before closing, and at closure. Time-Out before incision.
• PACU priority: ABCs — airway/breathing first (respiratory depression), then bleeding/BP.
• Early shock: tachycardia, restlessness, cool skin before hypotension.
• Prevent complications: IS/TCDB (atelectasis/pneumonia), SCDs + ambulation (VTE), early mobility (ileus), pain control enables all of it.
• Urine output goal roughly 0.5 mL/kg/hr; report oliguria.
• Never events: wrong-site surgery, retained item.

Related Topics

Prerequisites

• Fundamentals of Nursing
• Health Assessment
• Pharmacology for Nurses

Related Topics

• Medical-Surgical Nursing overview
• Critical Care and Emergency Nursing
• Wound care and infection control (see Fundamentals of Nursing)

Next Topics

• NCLEX and Exam Preparation
• Postoperative complication management (advanced med-surg)