# Post-Operative Care and Management ## Year 4: Sub-Internship Surgery --- ## Learning Objectives By the end of this seminar, students will be able to: 1. Manage patients in the immediate post-operative period including PACU assessment and common recovery room issues 2. Write comprehensive post-operative orders addressing activity, diet, fluids, and prophylaxis 3. Apply multi-modal pain management strategies and transition from parenteral to oral analgesia 4. Recognize and respond to early, intermediate, and late post-operative complications 5. Manage gastrointestinal recovery including ileus prevention and diet advancement 6. Determine discharge readiness and provide appropriate discharge instructions --- ## Section I: Immediate Post-Operative Care The post-anesthesia care unit (PACU) provides intensive monitoring during the critical transition from operative anesthesia to full consciousness. Assessment follows a systematic approach prioritizing airway, breathing, and circulation. The airway must be patent and protected, with the patient demonstrating adequate respiratory effort and appropriate reflexes to prevent aspiration. Breathing assessment includes respiratory rate, oxygen saturation, and pattern of respirations, watching for signs of obstruction, residual anesthetic effect, or respiratory depression. Circulation monitoring focuses on heart rate and blood pressure trends, identifying hypotension that may reflect hypovolemia, anesthetic effect, or hemorrhage. Common PACU issues require prompt recognition and treatment to prevent escalation. Pain, often the most immediate concern for the patient, responds to intravenous opioids titrated to effect while monitoring for respiratory depression. Nausea and vomiting, common after general anesthesia and particularly after certain procedures, responds to antiemetics such as ondansetron. Post-anesthetic shivering, uncomfortable and metabolically demanding, improves with warm blankets and may require meperidine. Hypotension most commonly results from residual anesthetic vasodilation or hypovolemia and typically responds to fluid administration. Emergence delirium, particularly in elderly patients, requires safety measures and calm reassurance while excluding underlying causes. Discharge from the PACU follows standardized criteria ensuring safe transfer to the surgical floor or ambulatory discharge. Vital signs must be stable for at least thirty minutes, demonstrating consistent hemodynamic parameters without intervention. The patient should be alert and oriented, able to follow commands, and demonstrating intact airway protective reflexes. Pain should be controlled to a tolerable level with an effective regimen that can be continued on the floor. Nausea should be minimal or absent, particularly before oral intake will be attempted. Surgical site examination should show appropriate dressing status without concerning bleeding. Oxygen saturation should be stable on room air or return to baseline supplemental oxygen requirements. The handoff from PACU to floor nursing represents a critical transition requiring complete communication. The procedure performed and any intraoperative findings or complications must be clearly conveyed. The patient's current vital sign trends and any interventions required in PACU inform ongoing monitoring needs. Pain management, including medications administered and patient response, guides continued treatment. All post-operative orders should be reviewed to ensure nursing understanding of activity restrictions, diet status, monitoring frequency, and parameters for notification. This structured handoff prevents information loss and ensures continuity of care. ![Immediate post-operative care. Panel A: PACU assessment priorities including airway patency, breathing assessment, and circulation monitoring with specific parameters. Panel B: Common PACU issues including pain, nausea, shivering, hypotension, and emergence delirium with management approaches. Panel C: PACU discharge criteria for vital sign stability, alertness, pain control, and surgical site status. Panel D: Handoff communication elements including procedure, vitals, pain management, and order review.](images/postop_care_section1.png) --- ## Section II: Post-Operative Orders Standard post-operative orders establish the framework for nursing care, monitoring, and treatment during recovery. The order set begins with admission information including service, attending physician, and floor assignment, whether regular surgical floor or intensive care unit. The diagnosis is documented as the post-operative diagnosis following the procedure. Patient condition, whether stable, fair, or guarded, communicates expected trajectory. Vital sign monitoring frequency depends on procedure complexity and patient status, ranging from every fifteen minutes initially to every four hours for stable patients. Code status is confirmed and documented. Activity orders progress from most restrictive toward independence as recovery permits. Bed rest applies to patients requiring immobility for procedure-specific reasons or hemodynamic instability. Dangling, sitting at the bedside with legs hanging, represents the first step toward mobilization. Out of bed to chair increases activity while limiting ambulation. Ambulation with assistance precedes independent ambulation. Activity orders should include any weight-bearing restrictions for orthopedic procedures or specific positioning requirements for certain surgeries. Progressive activity orders allow nursing flexibility in advancing as the patient demonstrates tolerance. Diet orders advance from NPO status through return to regular oral intake based on procedure and gastrointestinal recovery. NPO remains appropriate after bowel surgery until evidence of gastrointestinal function returns or for patients at aspiration risk. Sips of clear liquids represents initial oral challenge. Clear liquids allows water, broth, juice without pulp, and gelatin. Full liquids adds dairy and other opaque liquids. Regular diet indicates unrestricted oral intake. Enhanced recovery protocols may advance diet more rapidly than traditional practice when evidence supports safety. Dietary modifications for chronic conditions such as diabetic or low-sodium diets should be incorporated. Deep venous thrombosis prophylaxis prevents potentially fatal thromboembolic complications. Mechanical prophylaxis with sequential compression devices applies to essentially all surgical patients and begins in the operating room. Pharmacologic prophylaxis with subcutaneous heparin or low-molecular-weight heparin adds protection when bleeding risk permits, typically starting within twelve to twenty-four hours postoperatively. Contraindications to pharmacologic prophylaxis include active bleeding, high-risk procedure with ongoing hemorrhage concern, or specific coagulation defects. Prophylaxis continues throughout hospitalization and may extend after discharge for high-risk procedures including major orthopedic surgery, cancer surgery, or prolonged immobility. ![Post-operative orders. Panel A: Standard order components including admission information, diagnosis, condition, vital sign frequency, and code status. Panel B: Activity order progression from bed rest through dangling, chair, ambulation with assistance, to independent. Panel C: Diet order advancement from NPO through sips, clear liquids, full liquids, to regular diet. Panel D: DVT prophylaxis with mechanical SCDs and pharmacologic heparin dosing and timing.](images/postop_care_section2.png) --- ## Section III: Pain Management Multi-modal pain management combines different analgesic mechanisms to optimize pain control while minimizing opioid-related adverse effects. The approach typically includes scheduled acetaminophen, which provides baseline analgesia without respiratory depression or gastrointestinal effects. Non-steroidal anti-inflammatory drugs, when not contraindicated by renal impairment, bleeding risk, or gastrointestinal history, add anti-inflammatory and analgesic effects. Regional anesthesia techniques including epidurals, peripheral nerve blocks, or wound infiltration provide excellent analgesia with minimal systemic effects. Opioids fill remaining pain control gaps with the lowest effective dose rather than serving as sole therapy. This combination reduces total opioid requirements and associated complications. Opioid medications remain necessary components of acute surgical pain management but require careful dosing and monitoring. Morphine, the traditional parenteral opioid, provides reliable analgesia with typical intravenous doses of two to four milligrams every three to four hours. Hydromorphone offers advantages in renal impairment and provides approximately five-fold greater potency than morphine. Fentanyl, with its rapid onset and short duration, suits procedural analgesia and patient-controlled formats. Oral options include oxycodone, typically five to ten milligrams every four to six hours, and tramadol for moderate pain with less respiratory depression risk. Meperidine should be avoided due to seizure risk from metabolite accumulation. Patient-controlled analgesia allows patients to titrate their own opioid doses within programmed safety limits. The typical morphine PCA provides demand doses of one to two milligrams with lockout intervals of six to ten minutes preventing repeated dosing before peak effect. Continuous basal rates are generally avoided as they increase respiratory depression risk without improving pain control. Monitoring includes respiratory rate assessment, sedation scoring, and oxygen saturation surveillance. PCA proves most effective for patients who understand the system and have adequate cognitive function to self-administer appropriately. Clear education about pressing the button before pain becomes severe optimizes use. Transitioning from parenteral to oral analgesia occurs when patients tolerate oral intake and can be managed without intravenous access. The transition calculates total twenty-four-hour parenteral opioid requirements and converts to oral equivalents using standard conversion ratios. The oral dose typically provides seventy-five percent of the calculated equivalent, accounting for incomplete cross-tolerance between opioids. Overlap dosing during transition allows assessment of oral medication effectiveness before discontinuing parenteral routes. Long-acting oral opioids may provide baseline analgesia with short-acting agents for breakthrough, though this approach requires careful monitoring. The goal is adequate comfort for mobilization and recovery activities while beginning the tapering process. ![Pain management. Panel A: Multi-modal approach combining acetaminophen, NSAIDs, regional techniques, and opioids with benefits of each component. Panel B: Opioid dosing for morphine, hydromorphone, fentanyl, and oral agents with typical doses and intervals. Panel C: PCA programming including demand dose, lockout interval, and monitoring requirements. Panel D: Parenteral to oral transition process including calculating equivalents, overlap dosing, and tapering goals.](images/postop_care_section3.png) --- ## Section IV: Fluid and Electrolyte Management Maintenance fluid calculations provide baseline intravenous hydration for patients unable to take adequate oral intake. The 4-2-1 rule calculates hourly requirements: four milliliters per kilogram for the first ten kilograms of body weight, two milliliters per kilogram for the second ten kilograms, and one milliliter per kilogram for each additional kilogram. A seventy-kilogram adult therefore requires approximately one hundred ten milliliters per hour. Lactated Ringer's solution or normal saline serves as the typical maintenance fluid, with potassium supplementation added when patients will remain NPO and have adequate renal function. Dextrose addition may be necessary for patients at hypoglycemia risk. Replacing ongoing losses requires attention to the volume and composition of specific fluid outputs. Blood loss requires replacement with blood products or, for smaller losses, crystalloid at a three-to-one ratio. Third-space losses from major surgery or inflammatory conditions require crystalloid replacement guided by clinical assessment of perfusion. Nasogastric output, which contains significant electrolytes, is best replaced with dextrose five percent in half-normal saline with added potassium chloride. Diarrheal losses are replaced with lactated Ringer's solution. Biliary drainage similarly receives lactated Ringer's replacement. Documentation of all output sources enables accurate replacement. Electrolyte abnormalities require prompt recognition and correction to prevent cardiac, neuromuscular, and other complications. Hypokalemia, common after surgery due to stress response and renal losses, is repleted with potassium chloride administered intravenously or orally depending on severity and oral tolerance. Hypomagnesemia frequently accompanies hypokalemia and may need correction before potassium repletion becomes effective. Hypophosphatemia may occur after major surgery or in malnourished patients and requires sodium or potassium phosphate supplementation. Hyponatremia prompts assessment of volume status and appropriate management ranging from fluid restriction to sodium replacement depending on cause. Hypernatremia indicates free water deficit requiring dextrose-water replacement. Monitoring parameters guide ongoing fluid management and detect developing imbalances. Intake and output recording every nursing shift reveals fluid balance trends. Daily weights, when accurately obtained, provide the most reliable assessment of fluid status. Laboratory monitoring frequency depends on clinical stability and anticipated abnormalities. Urine output serves as a real-time indicator of renal perfusion, with goals typically exceeding half a milliliter per kilogram per hour. Physical examination findings including mucous membranes, skin turgor, jugular venous pressure, and edema complement objective measurements. Integration of all data guides fluid management adjustments. ![Fluid and electrolyte management. Panel A: 4-2-1 maintenance calculation with example for 70 kg adult and fluid selection guidance. Panel B: Replacement fluids for different loss types including blood, third-space, nasogastric, diarrhea, and bile. Panel C: Electrolyte abnormality treatment for hypokalemia, hypomagnesemia, hypophosphatemia, and sodium disorders. Panel D: Monitoring parameters including I/O recording, daily weights, labs, urine output goals, and physical examination.](images/postop_care_section4.png) --- ## Section V: Post-Operative Complications Early complications within the first twenty-four hours often relate to the procedure and anesthesia and may require urgent intervention. Hemorrhage manifests as tachycardia, hypotension, decreasing hemoglobin, or increased drain output with bloody character. Airway obstruction may result from residual anesthetic effect, edema, or hematoma compressing the airway. Aspiration presents with hypoxia and respiratory distress, potentially with pulmonary infiltrate on imaging. Cardiac events including arrhythmia, ischemia, or infarction may occur during emergence or early recovery. Malignant hyperthermia, though rare, presents with rapidly rising temperature, tachycardia, and muscle rigidity requiring immediate treatment. Recognition and rapid response to these complications saves lives. Intermediate complications developing between post-operative days one through seven require vigilance throughout hospitalization. Fever, following the "five W's" differential, suggests different etiologies based on timing. Surgical site infection presents with wound erythema, induration, and drainage, typically developing after post-operative day three. Deep venous thrombosis and pulmonary embolism may develop despite prophylaxis, presenting with leg swelling, dyspnea, or tachycardia. Ileus, distinguished from mechanical obstruction, causes distension and absent flatus without the high-pitched bowel sounds of obstruction. Anastomotic leak presents with tachycardia, abdominal pain, and fever, often first manifesting as persistent tachycardia before other signs develop. Urinary retention may occur after pelvic surgery or with prolonged catheterization. Late complications occurring beyond the first week may present after discharge and require patient education for recognition. Abscess formation presents with fever, localized pain, and may be detected on imaging. Adhesive small bowel obstruction can develop weeks to years after abdominal surgery. Incisional hernia appears as a bulge at the surgical site, particularly with straining or standing. Seroma, a collection of serous fluid, presents as fluctuant swelling without infection signs. Chronic pain may develop at surgical sites, particularly after certain procedures. Patients must understand which symptoms warrant urgent evaluation versus routine follow-up. The "five W's" mnemonic organizes the differential diagnosis for post-operative fever by timing. Wind refers to pulmonary causes, predominantly atelectasis, typically occurring in the first one to two days. Water indicates urinary sources, with urinary tract infection typically manifesting around days three to five. Wound covers surgical site infection, usually appearing between days five and seven when enough bacterial proliferation has occurred. Walking represents thromboembolic disease, with DVT and PE potentially occurring throughout the post-operative period but particularly days five to seven. Wonder drugs reminds that drug fever can occur at any time and presents diagnosis of exclusion. This framework guides systematic evaluation of the febrile post-operative patient. ![Post-operative complications. Panel A: Early complications including hemorrhage, airway obstruction, aspiration, cardiac events, and malignant hyperthermia. Panel B: Intermediate complications including fever, SSI, DVT/PE, ileus, anastomotic leak, and urinary retention. Panel C: Late complications including abscess, adhesive SBO, incisional hernia, seroma, and chronic pain. Panel D: Five W's mnemonic for fever with timing and cause relationships.](images/postop_care_section5.png) --- ## Section VI: Wound Care Daily wound assessment detects complications early and guides dressing management. Approximation indicates whether wound edges remain together as intended or show signs of separation. Color assessment compares wound edges to surrounding tissue, with pale tissue suggesting ischemia and dark tissue indicating potential necrosis. Drainage assessment notes the amount, progressing from none to minimal to moderate to copious, and character described as serous, sanguinous, serosanguinous, or purulent. Odor should be absent; foul smell strongly suggests infection. Surrounding skin erythema should be measured and tracked, with expanding erythema indicating cellulitis. Pain assessment distinguishes expected surgical site tenderness from the disproportionate pain of developing infection. Dressing selection matches wound characteristics and healing phase. Simple dry gauze provides basic protection for clean, closed wounds. Wet-to-dry dressings, with saline-moistened gauze applied and allowed to dry before removal, provide mechanical debridement for wounds with necrotic tissue. Occlusive dressings maintain a moist healing environment beneficial for granulating wounds. Foam dressings absorb moderate to heavy exudate while maintaining moisture balance. Alginate dressings manage heavily draining wounds and promote hemostasis. Negative pressure wound therapy (wound VAC) accelerates healing of complex wounds by removing fluid, reducing edema, and promoting granulation. Wound complications require specific management approaches. Seroma, a collection of serous fluid in the wound cavity, may be observed if small or aspirated with sterile technique if causing discomfort or risk of infection. Hematoma, if small and stable, can be observed, but expanding hematomas require operative evacuation. Surgical site infection requires opening the wound to allow drainage, with antibiotics added for surrounding cellulitis or systemic symptoms. Dehiscence of skin alone may heal by secondary intention with dressing changes, but fascial dehiscence requires operative repair. Evisceration, with bowel or other abdominal contents visible through the wound, constitutes an emergency requiring wet sterile dressing coverage and immediate operative return. Drain management ensures proper function and prevents complications. Jackson-Pratt drains require stripping to maintain suction and emptying with output recorded. Penrose drains provide passive drainage and require dressing changes to manage output. Output character is documented, with serous expected during normal healing and bloody output suggesting hemorrhage. Drain removal follows achieving the purpose, typically when output decreases to acceptable levels, often less than thirty milliliters per day for closed suction drains. Documentation includes daily output volumes and character changes that might indicate complication. ![Wound care. Panel A: Daily assessment elements including approximation, color, drainage amount and character, odor, surrounding erythema, and pain. Panel B: Dressing types with indications including dry gauze, wet-to-dry, occlusive, foam, alginate, and wound VAC. Panel C: Wound complication management for seroma, hematoma, infection, dehiscence, and evisceration. Panel D: Drain management including JP stripping, output documentation, and removal criteria.](images/postop_care_section6.png) --- ## Section VII: Gastrointestinal Recovery Distinguishing ileus from mechanical small bowel obstruction guides appropriate management. Ileus represents post-operative hypomotility of the gastrointestinal tract, a normal physiologic response to surgical manipulation, anesthesia, and inflammation. Mechanical small bowel obstruction indicates physical blockage, typically from adhesions, hernia, or other cause, and may require operative intervention. Timing helps differentiate: ileus predominates in the early post-operative period while adhesive obstruction typically develops days to weeks later. Bowel sounds are absent or hypoactive with ileus but may be high-pitched and hyperactive with mechanical obstruction. Imaging shows diffuse gaseous distension with ileus versus focal transition points with obstruction. Preventing and treating ileus employs multiple strategies targeting different contributing factors. Early ambulation, beginning on post-operative day one when possible, stimulates gastrointestinal motility. Minimizing opioid use through multi-modal pain management reduces drug-induced dysmotility. Early feeding, contrary to traditional practice of waiting for flatus, actually stimulates recovery without increasing complications. Gum chewing provides sham feeding that stimulates the cephalic phase of digestion. Electrolyte correction, particularly potassium and magnesium, supports normal bowel function. When ileus is established, nasogastric decompression relieves distension and vomiting while limiting further air swallowing. Alvimopan, a peripheral mu-opioid antagonist, may accelerate recovery in patients receiving opioids. Managing nausea and vomiting prevents aspiration, patient distress, and wound complications from straining. Ondansetron, a serotonin receptor antagonist, serves as first-line treatment with minimal side effects. Promethazine provides an alternative with sedative properties that may benefit some patients. Metoclopramide promotes gastric emptying and has antiemetic properties, though it may cause extrapyramidal symptoms. Scopolamine, administered as a transdermal patch, particularly helps patients with vestibular or motion-related components. Nasogastric decompression becomes necessary for persistent vomiting or significant distension, providing both symptomatic relief and preventing aspiration. Identifying and treating underlying causes remains essential. Diet advancement follows evidence that return of bowel function permits safe oral intake. Passing flatus indicates return of coordinated gastrointestinal motility and has traditionally served as the milestone for diet advancement. Bowel sounds, present on auscultation, suggest intestinal activity though their absence does not preclude feeding. Abdominal distension suggests ongoing ileus and may contraindicate diet advancement. Nausea at baseline predicts poor tolerance of oral intake. Hunger, the patient's subjective readiness, correlates with ability to tolerate feeding. Enhanced recovery protocols advance diet more rapidly than traditional practice, with evidence supporting early feeding safety in appropriately selected patients. ![Gastrointestinal recovery. Panel A: Ileus versus obstruction differentiation by cause, timing, bowel sounds, and imaging findings. Panel B: Ileus prevention and treatment including early ambulation, opioid minimization, early feeding, gum chewing, and NG decompression. Panel C: Anti-nausea medications including ondansetron, promethazine, metoclopramide, and scopolamine with indications. Panel D: Diet advancement criteria including flatus, bowel sounds, distension, nausea, and hunger assessment.](images/postop_care_section7.png) --- ## Section VIII: Respiratory Care Atelectasis prevention begins intraoperatively and continues throughout recovery. Incentive spirometry, performed ten breaths per hour while awake, expands alveoli and prevents collapse. Deep breathing exercises complement spirometry, with patients coached to take slow, maximal inhalations and hold briefly before exhaling. Coughing clears secretions that might otherwise obstruct small airways; patients should splint their incision with a pillow to reduce pain during cough. Early ambulation, the single most effective intervention, improves ventilation and promotes secretion clearance. Adequate pain control enables deep breathing and coughing by reducing chest wall splinting. Post-operative respiratory failure requires prompt recognition and escalating intervention. Hypoxia, detected by pulse oximetry or arterial blood gas, triggers increased supplemental oxygen initially. Tachypnea indicates increased work of breathing and may precede desaturation. Increased work of breathing, visible as accessory muscle use, nasal flaring, or paradoxical abdominal movement, suggests impending failure. Arterial blood gas analysis and chest radiography identify the underlying cause and severity. Non-invasive positive pressure ventilation with BiPAP may support patients with moderate failure and intact mental status. Intubation and mechanical ventilation become necessary when non-invasive measures fail or patients cannot protect their airway. Pulmonary embolism complicates the post-operative period despite prophylaxis and can be rapidly fatal. Dyspnea, often sudden in onset, represents the most common presenting symptom. Chest pain, typically pleuritic in character, may be present. Tachycardia, unexplained by other factors such as pain, fever, or hypovolemia, warrants investigation. Hypoxia may be out of proportion to chest radiograph findings. Risk factors including prolonged surgery, immobility, malignancy, and prior VTE raise clinical suspicion. CT angiography provides definitive diagnosis in most cases. Treatment with anticoagulation begins when diagnosis is confirmed, with consideration of thrombolysis or embolectomy for massive PE with hemodynamic compromise. Pneumonia prevention and treatment follows evidence-based protocols. Prevention strategies include incentive spirometry, early ambulation, aspiration precautions with head of bed elevation, and oral care to reduce bacterial colonization. Hospital-acquired pneumonia, developing after forty-eight hours of hospitalization, requires antibiotic coverage for nosocomial pathogens including gram-negative organisms and potentially resistant staphylococci. Ventilator-associated pneumonia, a subset of hospital-acquired pneumonia, occurs in mechanically ventilated patients and follows bundle prevention strategies. Chest physiotherapy and airway clearance techniques mobilize secretions. Respiratory therapy consultation provides specialized support for patients with significant pulmonary complications. ![Respiratory care. Panel A: Atelectasis prevention with incentive spirometry technique, deep breathing, coughing with incision splinting, and early ambulation. Panel B: Respiratory failure recognition and management from oxygen supplementation through BiPAP to intubation indications. Panel C: Pulmonary embolism presentation with dyspnea, chest pain, tachycardia, hypoxia, risk factors, and treatment approach. Panel D: Pneumonia prevention strategies including IS, ambulation, aspiration precautions, oral care, and treatment principles.](images/postop_care_section8.png) --- ## Section IX: Urologic Considerations Urinary retention commonly follows surgery, particularly procedures involving the pelvis, spine, or requiring spinal anesthesia. Male sex predisposes to retention, particularly with underlying benign prostatic hyperplasia. Spinal and epidural anesthesia directly impair bladder function and may cause retention lasting longer than the anesthetic duration. Pelvic surgery, including colorectal and gynecologic procedures, may injure or transiently affect nerves controlling bladder function. Opioid medications reduce bladder contractility and sensation, contributing to retention. Pain from abdominal incisions may inhibit the normal voiding reflex. Patients may not recognize retention, making active screening important. Managing urinary retention begins with accurate assessment and progresses through interventions. Bladder scanning provides non-invasive measurement of bladder volume, with greater than four hundred milliliters indicating significant retention requiring drainage. Straight catheterization empties the bladder while avoiding the infection risk of indwelling catheterization. Indwelling Foley catheter placement becomes appropriate when repeated straight catheterization proves necessary or when continuous drainage is required. Alpha-adrenergic blockers such as tamsulosin may facilitate voiding in patients with prostatic obstruction. Voiding trials, typically within twenty-four to forty-eight hours after catheter placement, assess return of function. Catheter-associated urinary tract infection represents the most common hospital-acquired infection and demands prevention focus. Duration of catheterization directly correlates with infection risk, making early removal the most effective prevention strategy. Sterile insertion technique with proper aseptic preparation reduces bacterial introduction. Maintaining a closed drainage system prevents ascending infection. Securing the catheter prevents trauma from movement and traction. Daily assessment of continued catheter necessity allows prompt removal when no longer indicated. When UTI develops despite precautions, diagnosis requires both symptoms and positive urine culture, as asymptomatic bacteriuria does not warrant treatment. Acute kidney injury in the post-operative period follows multiple potential etiologies requiring differentiation. Pre-renal causes from hypovolemia, hypotension, or reduced cardiac output predominate and typically respond to volume resuscitation. Nephrotoxic insults from contrast media, NSAIDs, aminoglycosides, or other drugs require medication review and avoidance of additional renal insults. Obstructive causes from surgical injury, ureteral stones, or prostatic obstruction require imaging and relief of obstruction. Acute tubular necrosis may follow prolonged ischemia or nephrotoxic injury and requires supportive care. Monitoring creatinine trends identifies developing injury, and nephrology consultation assists management of severe or persistent injury. ![Urologic considerations. Panel A: Urinary retention risk factors including male sex, spinal anesthesia, pelvic surgery, opioids, and incisional pain. Panel B: Retention management algorithm from bladder scan through straight cath, Foley placement, alpha-blockers, and voiding trial. Panel C: CAUTI prevention with early removal, sterile technique, closed system, catheter securement, and daily necessity assessment. Panel D: AKI evaluation for pre-renal, nephrotoxic, obstructive, and ATN etiologies with corresponding management.](images/postop_care_section9.png) --- ## Section X: Discharge Planning Discharge criteria ensure patients can safely continue recovery outside the hospital. Medical stability requires stable vital signs, typically afebrile for twenty-four hours without signs of active infection or hemodynamic instability. Surgical criteria include a stable wound without concerning drainage, signs of infection, or dehiscence, and drains either removed or manageable at home. Gastrointestinal function must support nutrition, with patients tolerating sufficient oral intake to maintain hydration and meet medication requirements. Pain must be controlled with oral medications that can be continued at home. Functional status should allow safe mobility, with patients ambulatory and able to perform basic self-care or with adequate assistance arranged. Social circumstances must support safe discharge, including appropriate living situation and support system. Discharge instructions provide patients with information necessary for safe recovery and appropriate care-seeking. Activity restrictions specify what patients should avoid, such as heavy lifting or driving, with duration and gradual return to normal activity outlined. Diet instructions note any restrictions and when to advance. Wound care instructions describe dressing changes, shower or bath restrictions, and signs of infection warranting evaluation. Medication instructions clarify new prescriptions, including purpose, dosing, and duration, as well as changes to home medications. Follow-up appointments should be scheduled before discharge when possible. Warning signs that should prompt return to the emergency department or physician contact must be clearly communicated. Common restrictions vary by procedure and should be individualized. Abdominal surgery typically restricts lifting to no more than ten pounds for four to six weeks to allow fascial healing and prevent incisional hernia. Laparoscopic procedures may allow earlier return to activity, often ten pounds for two to four weeks. Cardiac surgery, including sternotomy, imposes sternal precautions for approximately six weeks including no pushing, pulling, or lifting greater than five pounds. Orthopedic procedures specify weight-bearing status that must be clearly communicated. Driving restrictions apply while taking opioid medications and until patients can safely perform emergency maneuvers. Follow-up care coordinates continued recovery and identifies delayed complications. Initial follow-up within one to two weeks addresses wound assessment, staple or suture removal, and early post-operative concerns. More comprehensive evaluation at four to six weeks assesses overall recovery and clears patients for return to full activity. Laboratory monitoring depends on the procedure and patient conditions, with repeat imaging similarly procedure-specific. Pathology follow-up after cancer surgery typically occurs at the initial visit to discuss final staging and adjuvant therapy recommendations. Oncologic follow-up coordinates with surgical care for patients requiring additional treatment. ![Discharge planning. Panel A: Discharge criteria for medical stability, surgical wound status, GI function, pain control, functional status, and social support. Panel B: Discharge instruction categories including activity, diet, wound care, medications, follow-up, and warning signs. Panel C: Common restrictions by procedure type for abdominal, laparoscopic, cardiac, and orthopedic surgery. Panel D: Follow-up schedule with one to two week and four to six week visits, labs, imaging, and pathology review.](images/postop_care_section10.png) --- ## Summary Post-operative care manages the transition from operative intervention through recovery and discharge. Immediate PACU care prioritizes airway, breathing, and circulation assessment while addressing common recovery room issues including pain, nausea, and hypotension. Post-operative orders establish activity progression, diet advancement, DVT prophylaxis, and monitoring parameters tailored to procedure and patient needs. Multi-modal pain management combines acetaminophen, NSAIDs, regional anesthesia, and opioids to optimize comfort while minimizing adverse effects, with PCA providing patient-controlled dosing and planned transition to oral medications. Fluid management follows the 4-2-1 maintenance rule with replacement for specific losses and attention to electrolyte abnormalities. Complications follow temporal patterns, with early bleeding and airway issues, intermediate fever and infection following the "five W's," and late complications including abscess and hernia. Wound care requires daily assessment and appropriate dressing selection, with specific management for seroma, hematoma, infection, and dehiscence. Gastrointestinal recovery distinguishes ileus from obstruction and employs early ambulation, opioid minimization, and early feeding to promote resolution. Respiratory care prevents atelectasis through incentive spirometry and ambulation while remaining vigilant for pulmonary embolism and pneumonia. Urologic management addresses urinary retention and prevents catheter-associated infection. Discharge requires meeting medical, surgical, functional, and social criteria with comprehensive instructions and appropriate follow-up. --- ## Key Terms **PACU (Post-Anesthesia Care Unit)**: Monitored recovery area for patients emerging from anesthesia, providing intensive observation during the critical transition to full consciousness. **POD (Post-Operative Day)**: Sequential numbering system for days after surgery, with the surgical day being POD 0. **SCDs (Sequential Compression Devices)**: Inflatable leg sleeves that cyclically compress and release, preventing venous stasis and reducing DVT risk. **PCA (Patient-Controlled Analgesia)**: Pump system allowing patients to self-administer intravenous opioid doses within programmed safety limits. **Ileus**: Post-operative bowel hypomotility causing distension, nausea, and absent flatus, distinguished from mechanical obstruction by diffuse pattern and absent transition point. **IS (Incentive Spirometry)**: Breathing device that provides visual feedback encouraging sustained maximal inspiration to prevent atelectasis. **Dehiscence**: Separation of wound layers, ranging from superficial skin opening to fascial disruption to evisceration with bowel exposure. **Evisceration**: Surgical emergency in which abdominal contents protrude through a disrupted wound, requiring wet sterile dressing coverage and immediate operative repair. --- *This content is subject to the [MIT License](https://opensource.org/licenses/MIT). © 2024–2026 Hibbert School of Medicine.*