Perioperative nursing covers three distinct phases — before, during, and after surgery — and NCLEX tests all three. The questions focus on priority assessment, patient safety, and recognizing complications before they become emergencies. This guide breaks down what you need to know for each phase, the complications NCLEX loves to test, and a full NGN clinical judgment walkthrough.
The Three Perioperative Phases
NCLEX organizes perioperative nursing into three phases. Know the priority action in each.
| Phase | Time Frame | Priority Nursing Focus |
|---|---|---|
| Preoperative | Admission to OR entry | Assessment, consent, teaching, NPO verification |
| Intraoperative | OR entry to PACU transfer | Safety (positioning, counts, asepsis), anesthesia monitoring |
| Postoperative | PACU admission to discharge/recovery | Airway, hemorrhage, pain, wound, ambulation |
Preoperative Assessment and Nursing Responsibilities
The pre-op phase is about safety checks and identifying anything that could make surgery dangerous.
Informed Consent Rules
The surgeon (not the nurse) obtains consent. The nurse witnesses the signature and ensures the patient understands (can repeat back what the surgeon explained). If the patient has questions about the procedure, stop and call the surgeon — do NOT answer procedural questions yourself. If the patient is a minor, a parent/guardian signs. Emergencies: life-threatening surgery can proceed without consent.
Pre-Op Priority Checklist
- Verify patient identity (2 identifiers)
- Confirm surgical site is marked by surgeon
- NPO status verified (typically 6–8h solids, 2h clear liquids)
- Allergies documented (latex allergy = notify entire team)
- Baseline vitals, IV access confirmed
- Dentures, jewelry, nail polish, contacts removed
- Consent signed and on chart
- Surgical safety checklist (time-out) completed
NPO Guidelines
Anesthesia requires an empty stomach to prevent aspiration (Mendelson's syndrome). Standard: NPO after midnight for solids; some protocols allow clear liquids up to 2h before. If patient ate and surgery is elective — postpone. If patient ate and surgery is emergent — rapid sequence induction with cricoid pressure (Sellick maneuver).
Priority Pre-Op Lab Values
Know which pre-op labs are critical:
- K+ < 3.5 or > 5.5: notify surgeon (cardiac risk with anesthesia)
- Hgb < 10 or Hct < 30: may require transfusion pre-op
- Elevated creatinine: anesthesia and contrast dye risk
- PT/INR elevated: bleeding risk; check for anticoagulant use
Intraoperative Nursing Roles
The intraoperative phase has two distinct nursing roles — scrub and circulating. NCLEX distinguishes them.
| Role | Location | Responsibilities |
|---|---|---|
| Scrub nurse | Sterile field | Handles instruments, counts sponges/needles/instruments, maintains sterile technique |
| Circulating nurse | Outside sterile field | Documents, retrieves supplies, positions patient, monitors environment, manages counts with scrub |
| CRNA/Anesthesiologist | Head of table | Manages airway and anesthesia; nurse monitors per facility protocol |
| Surgeon | Sterile field | Performs procedure; responsible for consent and site marking |
Surgical counts: The scrub and circulating nurses count sponges, sharps, and instruments before incision, before closing a body cavity, and before skin closure. Incorrect count = stop closure, notify surgeon, re-count, X-ray if needed.
Sterile Field Rules (NCLEX Tested)
- Only sterile items enter the sterile field
- Sterile persons touch only sterile items; unsterile persons touch only unsterile items
- If you question sterility — it is NOT sterile
- A sterile field must be in continuous view
- Edges of sterile drapes (1-inch border) are considered unsterile
- Moisture = contamination (wet-through = NOT sterile)
Postoperative Nursing — PACU and Floor
The post-op phase is the highest-risk period for complications. NCLEX wants you to recognize and prioritize fast.
PACU Priority Assessment (ABC Order)
- Airway: patient is still recovering from anesthesia — airway obstruction is #1 risk. Assess for tongue-fall obstruction, laryngospasm, secretions. Position: lateral or semi-prone until airway reflexes return.
- Breathing: respiratory rate, depth, O2 sat. Opioids → respiratory depression (rate < 12 = notify, rate < 8 = emergency — have naloxone ready).
- Circulation: VS q15min until stable. Tachycardia + hypotension + restlessness = hemorrhage until proven otherwise.
- Neurological: level of consciousness, orientation, moving extremities. Emergence delirium in elderly and peds patients.
- Pain: assess before discharge from PACU; pain scale appropriate to patient.
Post-Op Hemorrhage: Recognize It Fast
- Tachycardia (earliest sign) → hypotension (late sign, blood loss > 30%)
- Restlessness and anxiety (early — brain detecting low perfusion)
- Cool, clammy, pale skin
- Urine output < 30 mL/hr
- Priority: apply pressure if external, position supine with legs elevated, notify surgeon, IV fluids, prepare for return to OR
Post-Op Complications
| Complication | Key Assessment | Priority Action |
|---|---|---|
| Atelectasis | Diminished breath sounds, low O2 sat, shallow respirations | Turn/cough/deep breathe (TCDB), incentive spirometry, early ambulation |
| Pneumonia | Fever (day 3+), productive cough, crackles | TCDB, antibiotics, ambulation |
| DVT | Calf pain, warmth, swelling (Homan's sign unreliable) | Anticoagulants, compression stockings, ambulation; NO leg massage |
| Wound dehiscence | Edges separating, "popping" sensation | Cover with sterile saline dressing, notify surgeon, keep patient supine |
| Evisceration | Bowel protruding through wound | Cover with sterile saline-soaked dressing, do NOT push bowel back, notify surgeon STAT, prepare for emergency OR |
Anesthesia Complications
NCLEX tests the two most dangerous anesthesia complications — malignant hyperthermia and laryngospasm.
Malignant Hyperthermia (MH)
- Cause: genetic disorder triggered by succinylcholine or volatile inhaled anesthetics (halothane, sevoflurane)
- Signs: sudden hyperthermia (temp can rise 1°C every 5 minutes), muscle rigidity (especially masseter jaw muscle — first sign), tachycardia, metabolic acidosis, cola-colored urine (myoglobinuria)
- Treatment: stop triggering agent IMMEDIATELY, call for dantrolene (the antidote — given IV), cooling measures, 100% O2, sodium bicarbonate for acidosis
Malignant Hyperthermia Memory
"CRAMPS": C=Cola urine, R=Rigidity, A=Acidosis, M=Masseter spasm, P=Pyrexia (hyperthermia), S=Stop the agent + dantrolene
Laryngospasm
- Occurs in PACU: glottic closure from anesthesia residue, secretions, or stimulation
- Signs: high-pitched stridor (partial) or complete silence (total obstruction — no air movement)
- Treatment: jaw-thrust maneuver, 100% O2 with positive pressure, succinylcholine if complete (paralytic to relax cords), have intubation kit at bedside
5-Step NGN Walkthrough: Post-Op Respiratory Depression
Clinical Scenario
A 58-year-old female is 2 hours post-op abdominal hysterectomy in the PACU. She received fentanyl 100 mcg intraoperatively. VS: BP 118/72, HR 88, RR 8, SpO2 89% on 2L NC. She is difficult to arouse. Last naloxone: none given.
RR 8 (normal 12–20), SpO2 89% (below 95%), difficult to arouse → opioid-induced respiratory depression (OIRD) pattern; recent intraoperative fentanyl is the cause.
RR 8 + SpO2 89% + unresponsive = inadequate ventilation. Risk for respiratory arrest. Root cause = fentanyl CNS depression. The fentanyl half-life is 2–4h — patient is still in the peak risk window.
Primary = opioid-induced respiratory depression. Rule out: airway obstruction (no stridor documented, position unclear), pneumothorax (no asymmetrical chest rise noted). OIRD is the most likely with this drug/timing/presentation.
Stimulate patient (sternal rub) — may be enough for mild OIRD. Reposition: jaw-thrust, ensure airway open, HOB up 30° only if airway reflexes intact. Increase O2: upgrade from 2L NC to non-rebreather mask. Administer naloxone 0.4 mg IV per protocol — titrate to effect (respiratory rate ≥ 12, SpO2 ≥ 94%). Notify surgeon and anesthesia provider. Prepare for re-intubation if no response to naloxone.
After naloxone and repositioning: RR rises to 14, SpO2 improves to 96%, patient more arousable. Expected trajectory. Continue monitoring q15 min — naloxone duration is 30–90 min, shorter than fentanyl — re-sedation can occur (re-dose or infusion may be needed).
Bottom Line
Perioperative questions on NCLEX test your ability to prioritize — the right action at the right phase. In pre-op, your job is to catch what could make surgery dangerous. Intraoperatively, sterile field and surgical counts keep patients safe. Post-op, your assessment catches the complications before they kill. Know the ABC priority in PACU, recognize malignant hyperthermia and respiratory depression on sight, and understand when to call the surgeon versus intervene yourself.
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