8.1 Perioperative Nursing and Wound Care Management

8.1 Perioperative Nursing and Wound Care Management

Perioperative nursing encompasses the continuum of patient care throughout the preoperative, intraoperative, and postoperative phases of surgical intervention. Professional practice requires rigorous adherence to patient safety protocols, profound understanding of surgical pharmacology and anesthesia complications, precise physiological monitoring, and rapid emergency intervention during catastrophic decompensation such as malignant hyperthermia or abdominal wound evisceration.

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Preoperative Assessment & Safety Protocols

The preoperative phase commences when the decision for surgical intervention is finalized and concludes when the patient is transferred onto the operating room table. The primary nursing objective is baseline physiological stabilization, risk stratification, and patient safety verification.

The Preoperative Checklist

The preoperative checklist serves as a systematic verification tool to ensure all clinical, diagnostic, and legal prerequisites are satisfied prior to transferring the patient to the operative suite:

• Patient Identification: Verify identity using at least two independent identifiers (full legal name, medical record number, and date of birth) matching the hospital wristband against the operative schedule and medical record.
• Surgical Site Marking: Confirm that the surgical site has been physically marked with an indelible surgical marker by the operating surgeon (or credentialed surgical designee who will be present during the procedure). The marking must occur in the preoperative holding area while the patient is awake, alert, and capable of participating in site verification. The mark must remain clearly visible after surgical skin antisepsis and sterile draping.
• Allergy Verification: Review and document documented allergies, placing high-visibility allergy bands on the patient. Specific inquiry must target:
  • Latex allergy: Cross-reactivity with tropical fruits (banana, avocado, kiwi, chestnut, passion fruit).
  • Povidone-iodine / Chlorhexidine allergy: Requires alternative antiseptic skin preparation agents.
  • Antibiotic allergies: Penicillin/cephalosporin cross-sensitivity dictates alternative surgical prophylaxis.
• Physical Preparation & Belongings: Remove all jewelry, body piercings (prevents electrocautery electrical arching and burns), dentures, partial plates, dental bridges (prevents dislodgement and airway occlusion during endotracheal intubation), eyeglasses, contact lenses, hearing aids (retained until immediately prior to induction if required for communication), hairpins, wigs, and nail polish/artificial nails (prevents interference with pulse oximetry light transmission).
• Diagnostic & Laboratory Review: Ensure completion and abnormal result reporting for Complete Blood Count (CBC; hemoglobin/hematocrit for oxygen-carrying capacity; platelets for hemostasis), basic metabolic panel (potassium balance critical for cardiac stability during anesthesia), coagulation profile (PT/INR, PTT), blood type and screen or crossmatch, 12-lead ECG (for patients > 40-50 years or with known cardiovascular disease), chest radiograph, and a point-of-care urine or serum human chorionic gonadotropin (hCG) pregnancy test for all females of childbearing potential.

Informed Consent: Legal Principles & Nursing Role

Informed consent is an autonomous, voluntary authorization by the patient permitting a healthcare provider to execute a specific clinical or surgical intervention. Understanding the strict legal boundaries between the provider's duty and the nurse's role is critical on licensure examinations.

Critical Legal Pitfalls in Informed Consent

1. Patient Misunderstanding or Hesitation: If the patient states, "I am still not sure why they have to remove my gallbladder," or asks about alternative therapies, the nurse must NOT attempt to explain the surgical procedure, risks, or alternatives. The nurse must withhold the consent form, keep the patient in the holding area, and immediately page the operating surgeon to return to the bedside to re-explain the procedure and answer all patient inquiries before the patient signs.
2. Timing of Preoperative Sedation: Informed consent MUST be signed PRIOR to the administration of any psychoactive, sedative, or opioid medications (e.g., midazolam, lorazepam, fentanyl, morphine). Any consent document signed after a patient receives sedatives or narcotics is legally null and void due to temporary chemical cognitive impairment. If an unsigned patient has inadvertently received sedation, surgery must be delayed until the medication clears, or consent must be obtained from an authorized legal surrogate or healthcare power of attorney.
3. Incapacitated Adults & Minors: If an adult patient is legally incompetent or incapacitated, consent must be obtained from the designated durable power of attorney for healthcare, legal guardian, or next of kin in accordance with statutory hierarchy. Minors (< 18 years) require parental or legal guardian consent, except in legally recognized emancipated minors (married, active military duty, or court-emancipated) or state-specific exceptions (emergency care, sexually transmitted infection treatment, contraception, substance abuse treatment).
4. Emergency Doctrine Exception: In acute life-or-limb-threatening emergencies where the patient is unconscious, cognitively incapacitated, or hemodynamically unstable, and no legal surrogate can be reached despite diligent efforts, the law presumes consent under the principle of beneficence (implied consent). Treatment proceeds immediately to save life or limb; two physicians must document the emergent necessity in the medical record.

Evidence-Based Fasting (NPO) Guidelines

Preoperative fasting protocols are designed to minimize residual gastric fluid volume and acidity, thereby preventing regurgitation and life-threatening pulmonary aspiration of gastric contents (Mendelson syndrome) during the induction of anesthesia and endotracheal intubation.

Preoperative NPO Fasting Hierarchy (ASA Standards):
- 2 Hours: Clear liquids only (water, fruit juice without pulp, black coffee, clear tea)
- 4 Hours: Ingested human breast milk
- 6 Hours: Infant formula, non-human animal milk, light meal (toast & clear liquid)
- 8+ Hours: Fried foods, fatty foods, or meals containing meat

• Clear Liquids (Minimum 2-Hour Fast): Patients may consume clear liquids up to 2 hours prior to scheduled anesthesia induction. Clear liquids include water, clear fruit juices without pulp (apple juice, white grape juice), clear broth, black coffee (strictly no milk or cream), plain tea, and carbonated beverages. Current evidence demonstrates that maintaining clear liquid hydration up to 2 hours preoperatively reduces patient thirst, anxiety, dehydration, and postoperative nausea without increasing gastric volume.
• Breast Milk (Minimum 4-Hour Fast): Neonates and infants require a minimum 4-hour fasting period following ingestion of breast milk due to rapid gastrointestinal transit.
• Infant Formula & Light Meals (Minimum 6-Hour Fast): Infant formula, non-human milk (cow's milk contains casein, forming gastric curds that delay emptying), and a light meal (such as plain white toast and clear liquid) mandate a minimum 6-hour fasting interval.
• Fatty, Fried, or Meat Meals (Minimum 8-Hour Fast): Meals containing fried items, high lipid content, or animal meats significantly prolong gastric emptying time, mandating an absolute minimum fasting period of 8 hours or longer.

Preoperative Medication Adjustments

Managing routine chronic medications prior to surgery requires balancing the risk of perioperative withdrawal or disease decompensation against the hazards of surgical hemorrhage, hypotension, and drug interactions:

• Anticoagulants and Antiplatelets:
  • Warfarin: Withhold 5 days prior to elective surgery; target preoperative International Normalized Ratio (INR) is <= 1.5. If emergency reversal is mandated, administer Vitamin K (phytonadione) and 4-factor Prothrombin Complex Concentrate (PCC) or Fresh Frozen Plasma (FFP).
  • Direct Oral Anticoagulants (DOACs - Apixaban, Rivaroxaban, Dabigatran): Withhold 48 to 72 hours prior to surgery, adjusted upward for renal impairment.
  • Clopidogrel (Plavix) & Ticagrelor: Withhold 5 to 7 days prior to elective procedures to restore platelet aggregation.
  • Aspirin: Typically discontinued 7 days prior to procedures involving closed spaces (intracranial, spinal, posterior eye surgery); often continued in patients with recent drug-eluting coronary stents undergoing non-cardiac surgery.
  • NSAIDs (Ibuprofen, Naproxen): Withhold 48 hours to 7 days depending on elimination half-life.
• Cardiovascular Medications:
  • Beta-Blockers (Metoprolol, Atenolol): CONTINUE on the morning of surgery with a minimal sip of water! Abrupt withdrawal causes rebound sympathetic hyperactivity, tachycardia, hypertension, and marked increases in perioperative myocardial infarction and mortality.
  • ACE Inhibitors (Lisinopril) and ARBs (Losartan): WITHHOLD on the morning of surgery. Concomitant administration with general anesthetics induces profound, refractory intraoperative vasoplegic hypotension that is notoriously unresponsive to conventional alpha-1 adrenergic agonists (phenylephrine), often requiring vasopressin or methylene blue rescue.
• Endocrine & Diabetic Medications:
  • Oral Hypoglycemics: Withhold on the morning of surgery. Withhold Metformin 48 hours prior if IV iodinated radiocontrast media will be administered to eliminate the risk of lactic acidosis. Withhold SGLT2 inhibitors (Empagliflozin, Dapagliflozin) 3 to 4 days prior to prevent perioperative euglycemic diabetic ketoacidosis (euDKA).
  • Insulin Regimens: Withhold morning rapid-acting (lispro, aspart) or regular insulin because the patient is fasting. Administer a reduced dose (typically 50% to 80%) of the patient's intermediate-acting (NPH) or long-acting basal insulin (glargine, detemir) on the morning of surgery to prevent ketogenesis. Perform point-of-care capillary blood glucose checks every 2 to 4 hours; initiate an IV regular insulin infusion for glycemic targets (140 to 180 mg/dL).
• Herbal Supplements (The "4 Gs"):
  • Garlic, Ginkgo Biloba, Ginseng, and Ginger: All potentiate platelet inhibition and increase intraoperative bleeding risk. All herbal products must be discontinued at least 2 weeks prior to elective surgery.
  • St. John's Wort: Induces hepatic cytochrome P450 enzymes, accelerating the metabolism of anesthetic agents, sedatives, and opioids.

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Intraoperative Safety & Malignant Hyperthermia Emergency

The intraoperative phase begins upon entry into the operating room and extends until transfer to the post-anesthesia care unit (PACU). Intraoperative nursing emphasizes sterile asepsis, surgical counts, physiological surveillance, and immediate coordinated crisis management.

The WHO Surgical Safety Checklist

The World Health Organization (WHO) Surgical Safety Checklist establishes a standardized, three-phase communication protocol proven to drastically reduce perioperative morbidity, mortality, and wrong-site surgical errors:

WHO Surgical Safety Checklist: Three Mandatory Checkpoints
1. SIGN IN (Before Anesthesia Induction): Patient confirms ID, site, consent; allergy/airway check.
2. TIME OUT (Before Skin Incision): Full team pause; verify patient, site, procedure, antibiotics.
3. SIGN OUT (Before Leaving OR): Instrument/sponge counts, specimen labeling, post-op concerns.

1. Sign In (Prior to Anesthesia Induction): Conducted collaboratively by the circulating nurse and anesthesia provider with the patient participating:
   • Confirm patient identity, surgical site marking, procedure, and signed informed consent.
   • Check anesthesia machine, monitors, and medication emergency drugs.
   • Confirm functional pulse oximeter placement.
   • Verify patient allergy status, anticipated difficult airway or aspiration risk, and risk of massive blood loss (> 500 mL in adults or > 7 mL/kg in children); confirm availability of two large-bore IVs and crossmatched blood products.
2. Time Out (Immediately Prior to Skin Incision): A mandatory, formal pause where all operating room activities cease completely, involving the entire multidisciplinary surgical team (surgeon, anesthesia provider, scrub nurse/technician, circulating nurse):
   • All team members introduce themselves by name and professional role.
   • Verify correct patient, correct operative procedure, and correct anatomical site and side.
   • Confirm that prophylactic IV antibiotics have been completely infused within 60 minutes prior to surgical incision (or within 120 minutes for vancomycin and fluoroquinolones) to establish peak bactericidal tissue concentrations.
   • Confirm that essential diagnostic radiographs, MRI, or CT images are properly displayed.
   • Surgeon reviews anticipated critical steps, operative duration, and anticipated blood loss.
   • Anesthesia provider reviews specific patient hemodynamic concerns or airway vulnerabilities.
   • Nursing team confirms sterility indicators, equipment availability, and implant verifications.
3. Sign Out (Prior to Patient Transfer Out of the Operating Room): Conducted before the surgeon leaves the room:
   • Circulating nurse verbally confirms the recorded name of the completed surgical procedure.
   • Confirm completion and accuracy of sponge, needle, sharp, and instrument counts. Any discrepancy requires immediate recount, wound exploration, and intraoperative plain radiography before wound closure.
   • Confirm correct verbal reading and labeling of pathology specimens (patient name, identification number, anatomical source).
   • Identify any malfunctioning equipment or clinical equipment issues.
   • Multidisciplinary review of critical postoperative management concerns, PACU recovery trajectory, hemodynamic goals, and airway vulnerabilities.

Malignant Hyperthermia (MH): Pathophysiology & Emergency Protocol

Malignant Hyperthermia is a rare, pharmacogenomic, life-threatening hypermetabolic crisis of skeletal muscle triggered by exposure to specific anesthetic agents. It occurs predominantly in individuals carrying an autosomal dominant mutation in the RYR1 (ryanodine receptor 1) gene or the CACNA1S (voltage-gated calcium channel) gene.

Pharmacological Triggers

• Volatile Halogenated Inhalational Anesthetics: Sevoflurane, Desflurane, Isoflurane, Halothane, and Enflurane.
• Depolarizing Neuromuscular Blocking Agent: Succinylcholine.
• Safe Non-Triggering Agents: Nitrous oxide, IV anesthetics (Propofol, Etomidate, Ketamine), opioids, benzodiazepines, local anesthetics (Lidocaine, Bupivacaine), and non-depolarizing neuromuscular blockers (Rocuronium, Vecuronium, Cisatracurium).

Molecular Pathophysiology

Triggering agents induce uncontrolled, sustained calcium ($Ca^{2+}$) efflux from the sarcoplasmic reticulum into the myoplasm via mutated, hyperactive ryanodine receptors. Intracellular calcium accumulation overwhelms the sarcoplasmic reticulum calcium ATPase pump (SERCA), activating continuous, unregulated actin-myosin cross-bridging and intense skeletal muscle contractions. This produces a massive surge in aerobic and anaerobic metabolism, extreme oxygen consumption, profound lactic acidosis, excessive carbon dioxide ($CO_2$) production, and vast heat generation. Depleted ATP causes myocyte membrane collapse, releasing intracellular potassium, myoglobin, and creatine kinase into systemic circulation.

Clinical Manifestations: Early vs. Late Signs

• Earliest & Most Sensitive Sign: Unexplained, rapid, precipitous rise in End-Tidal Carbon Dioxide ($EtCO_2$) (often exceeding 60 to 80+ mmHg) that is completely refractory to marked increases in mechanical minute ventilation.
• Cardiovascular: Persistent sinus tachycardia (earliest physical vital sign as catecholamines surge), labile blood pressure, and cardiac dysrhythmias (ventricular ectopy, peaked T waves from acute hyperkalemia).
• Muscular: Masseter muscle spasm / rigidity (trismus) immediately following succinylcholine administration; progressing to generalized board-like "wooden" muscle rigidity.
• Metabolic: Severe mixed respiratory and metabolic lactic acidosis (arterial pH < 7.15, base deficit > -10 mEq/L), tachypnea, mottled cyanotic skin.
• Late, Grave Sign: Extreme Hyperthermia. Core body temperature rises rapidly at a rate of 1°C to 2°C every 5 minutes, frequently reaching or exceeding 40°C to 42°C (104°F to 107.6°F). Hyperthermia is a late confirmatory sign; waiting for elevated temperature before treating guarantees severe neurological injury or death!
• Post-Crisis Sequelae: Massive rhabdomyolysis releases myoglobin into circulation, manifesting as tea-colored or dark reddish-brown urine (myoglobinuria) and severe acute renal tubular necrosis, accompanied by marked elevation of serum Creatine Kinase (CK > 10,000 to 100,000 U/L) and hyperkalemic cardiac arrest.

Emergency Malignant Hyperthermia Protocol

When malignant hyperthermia is recognized, the team must execute the following protocol simultaneously:

1. Immediately Halt Triggering Agents: Cease administration of all volatile anesthetics (turn off vaporizers) and succinylcholine immediately. Notify the surgical team; terminate or expedite surgical closure. Do not waste time changing the anesthesia circuit; insert activated charcoal filters into both limbs of the circuit or hyperventilate on high flow.
2. Hyperventilate with 100% Oxygen: Administer 100% pure oxygen at maximum fresh gas flows (>= 10 to 15 L/min) and increase minute ventilation 2 to 3 times the baseline to flush accumulating carbon dioxide.
3. Administer IV Dantrolene Sodium STAT:
   • Dantrolene is the specific, life-saving antidote that directly binds the RYR1 ryanodine receptor, halting calcium release from the sarcoplasmic reticulum into the sarcoplasm.
   • Dosing: Initial bolus of 2.5 mg/kg rapid IV push. Repeat 2.5 mg/kg bolus every 5 to 10 minutes until muscle rigidity subsides, heart rate slows, and $EtCO_2$ normalizes. Doses up to 10 mg/kg (and occasionally up to 20-30 mg/kg) may be required in severe crises.
   • Formulations: Ryanodex (nanocrystal formulation: 250 mg/vial reconstitutes in 5 mL sterile water in under 1 minute); classic Dantrium/Revonto (20 mg/vial requires 60 mL sterile water per vial, requiring several staff members to dissolve 20-30 vials).
4. Active Core & Surface Cooling:
   • Infuse chilled, cold IV 0.9% Normal Saline (4°C) at 1,000 mL every 10 to 15 minutes.
   • Apply ice packs to high-vascularity zones: bilateral axillae, groin, and neck.
   • Perform iced normal saline lavages of the stomach (via NG tube), urinary bladder (via 3-way Foley), and open peritoneal cavity if accessible.
   • CRITICAL TEMPERATURE CEILING: Halt active cooling measures when core body temperature drops to 38.0°C (100.4°F) to prevent severe, inadvertent rebound hypothermia and cardiac dysrhythmias.
5. Correct Hyperkalemia & Severe Acidosis:
   • Administer IV Sodium Bicarbonate (1 to 2 mEq/kg) to buffer severe metabolic acidosis and facilitate intracellular potassium shifts.
   • For hyperkalemia: Administer IV Regular Insulin (10 units) with 50% Dextrose (50 mL) to drive potassium into cells, accompanied by IV Calcium Chloride (10% solution, 10 mL) or Calcium Gluconate (10% solution, 30 mL) to stabilize cardiac myocyte membranes against fatal dysrhythmias.
6. Maintain Diuresis & Renal Protection: Administer IV fluids, mannitol, or furosemide to maintain an active urine output of >= 2 mL/kg/hr to flush myoglobin casts from renal tubules and prevent obstructive acute kidney injury.
7. Intensive Care Transfer: Transfer to the ICU for continuous hemodynamic, electrolyte, and temperature monitoring for a minimum of 24 to 48 hours due to a 25% risk of crisis recrudescence within 24 hours.

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Postoperative Recovery, PACU Care & Pulmonary Complications

The postoperative phase begins with PACU admission and concludes upon full resolution of surgical recovery. Immediate priorities focus on airway patency, cardiovascular stability, pain control, and early mobilization.

The Modified Aldrete Scoring System

The Modified Aldrete Score is the universally recognized clinical scoring tool utilized to evaluate readiness for discharge from the PACU to an inpatient surgical ward. Five physiological parameters are assessed, each scored from 0 to 2, yielding a maximum score of 10:

• Discharge Threshold: A minimum score of >= 8 out of 10 (with 2 points in Respiration) is universally required for safe discharge from Phase I PACU to an inpatient med-surg unit, provided surgical site bleeding is minimal and vital signs are stable.

Common PACU Complications & Nursing Management

• Postoperative Urinary Retention (POUR): Inability to void following catheter removal or surgery, caused by lingering spinal/epidural blockade (S2-S4 parasympathetic inhibition), high-dose systemic opioids, anticholinergics, and pelvic manipulation. If the patient has not voided within 6 to 8 hours postoperatively or reports suprapubic fullness, perform a bedside bladder ultrasound scan. If retained urine volume exceeds 400 to 500 mL, perform straight in-and-out catheterization under aseptic technique.
• Hypothermia & Shivering: Anesthetic-induced vasodilation and cold operating room temperatures induce hypothermia (core temp < 36.0°C). Shivering dramatically increases metabolic rate, oxygen consumption by up to 400%, and myocardial work. Intervene with forced-air warming blankets (Bair Hugger) and warm IV fluids; administer low-dose IV Meperidine (Demerol 12.5 to 25 mg) to rapidly suppress shivering thermogenesis.
• Atelectasis & Pulmonary Prophylaxis:
  • Anesthesia, surgical recumbency, and splinted shallow breathing cause micro-alveolar collapse, making atelectasis the most common cause of postoperative low-grade fever within the first 24 to 48 hours.
  • Incentive Spirometry Protocol: Patient sits upright in high-Fowler's position, exhales completely, seals lips firmly around mouthpiece, inhales slowly and deeply to maximally elevate the piston, holds breath for 3 to 5 seconds at peak inspiration, and exhales passively. Perform 10 breaths every hour while awake.
  • Controlled Coughing with Incisional Splinting: Teach the patient to firmly press a folded pillow or blanket over the abdominal incision while coughing deeply to stabilize fascial margins and minimize pain.
  • Early Ambulation: The single most effective, evidence-based intervention to expand lung bases, stimulate peristalsis (preventing paralytic ileus), and prevent deep vein thrombosis.

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Wound Healing Trajectories & Emergency Complications

Surgical wounds heal through distinct physiological mechanisms depending on the extent of tissue loss and microbial contamination.

The Three Intentions of Wound Healing

Phases of Wound Healing

1. Hemostasis (Immediate to Hours): Platelet aggregation, vasoconstriction followed by vasodilation, fibrin clot lattice deposition.
2. Inflammatory Phase (Day 1 to Day 4): Neutrophil recruitment followed by macrophages clearing necrotic debris, bacteria, and synthesizing growth factors. Manifests with localized erythema, mild edema, warmth, and moderate serosanguinous exudate.
3. Proliferative Phase (Day 4 to Day 21): Fibroblasts synthesize collagen and ground substance; capillary budding creates bright red, vascular, granular "beefy" tissue (granulation tissue); myofibroblasts mediate wound margin contraction, followed by epithelial resurfacing.
4. Maturation / Remodeling Phase (Day 21 to 1-2 Years): Type III collagen is systematically replaced by dense, organized Type I collagen along stress lines. Scar tissue pales, contracts, and strengthens, ultimately achieving a maximum tensile strength of approximately 80% of original intact unwounded skin.

Wound Dehiscence vs. Wound Evisceration

• Wound Dehiscence: Partial or complete separation of the fascial or cutaneous margins of a surgical incision without protrusion of internal visceral organs. The classic warning sign is a sudden, copious gush of clear, serosanguinous fluid from the incision between postoperative days 5 and 10 (the vulnerable nadir where suture holding strength declines before mature collagen forms).
• Wound Evisceration: Complete disruption of all surgical wound layers (skin, subcutaneous fat, musculofascial sheath, and peritoneum) accompanied by the extrusion and protrusion of internal visceral organs (typically small intestine) through the wound defect. This is a catastrophic, life-threatening surgical emergency.
• Precipitating Triggers: Forceful coughing, sneezing, vomiting, straining against constipation (Valsalva), lifting, abdominal distension, severe malnutrition (hypoalbuminemia < 3.0 g/dL), obesity, diabetes mellitus, and chronic systemic corticosteroid therapy.

Immediate Emergency Response: Abdominal Wound Evisceration
1. STAY WITH THE PATIENT - Call for emergency nursing assistance immediately.
2. POSITION: Low-Fowler's with hips and knees flexed to reduce abdominal wall tension.
3. COVER: Place sterile gauze soaked in sterile 0.9% normal saline over exposed viscera.
4. DO NOT REINSERT: Never push or force protruding organs back into the abdominal cavity.
5. ENFORCE NPO: Withhold all oral intake; prepare for emergency exploratory laparotomy.
6. NOTIFY STAT: Contact attending surgeon and operating room team immediately.
7. MONITOR VITAL SIGNS: Assess for impending hypovolemic/septic shock every 5-10 minutes.

Detailed Step-by-Step Evisceration Protocol

1. Stay with the Patient: Never abandon the patient. Call loudly for colleague assistance and pull the emergency call light. Instruct colleagues to notify the attending surgeon STAT, alert the operating room, and bring the sterile dressing cart and IV supplies.
2. Positioning: Immediately adjust the bed to place the patient in Low-Fowler's position with the head of the bed elevated 15 to 30 degrees and the knees and hips flexed (semi-Fowler's with knees bent using pillows under the knees). This posture relaxes the rectus abdominis muscles, markedly reducing intra-abdominal tension and preventing further visceral exteriorization.
3. Cover the Exposed Organs with Sterile Saline-Moistened Dressings: Immediately open sterile surgical packs and generously soak sterile abdominal laparotomy pads or gauze towels with sterile 0.9% Normal Saline. Gently drape the saturated sterile towels over the entire wound and protruding intestinal loops.
   • Pathophysiological Rationale: Prevents desiccation, ischemic necrosis, and hypothermia of the fragile peritoneal serosa and bowel wall, while providing a sterile barrier against ambient hospital pathogens.
   • Maintenance: Continuously moisten the dressing with sterile saline if prolonged transport occurs; never allow the gauze to dry out, as dry gauze adheres to serosa and peels bowel wall when removed.
4. CRITICAL PROHIBITION - Do NOT Attempt Reinsertion: Never attempt to push, manipulate, or re-insert the protruding visceral organs back into the abdominal cavity! Manual pressure forces contaminated bowel into a sterile peritoneal space, introduces lethal peritonitis, strangulates mesenteric blood supply, and risks bowel perforation.
5. Maintain Strict NPO Status: Enforce complete fasting. Withhold all oral liquids, medications, and ice chips. If gastric distension or active vomiting occurs, place a nasogastric tube to low continuous suction under surgical orders to decompress the stomach.
6. Hemodynamic Stabilization & Shock Monitoring: Obtain baseline vital signs immediately and repeat every 5 to 10 minutes. Protruding viscera allows massive fluid evaporation and third-space fluid sequestration, predisposing to hypovolemic and neurogenic shock (tachycardia, hypotension, pallor, cold diaphoresis). Ensure two large-bore peripheral IV cannulas (16- or 18-gauge) are patent and infuse prescribed isotonic crystalloids.
7. Patient Reassurance & Calming: Reassure the patient in a calm, authoritative voice. Instruct the patient to take slow, deep breaths through the mouth and avoid coughing, crying, or straining. Keep a light blanket over the patient's upper chest and lower legs to prevent systemic hypothermia while avoiding pressure on the abdomen.