Perforated peptic ulcer (PPU) is a surgical emergency with short-term mortality up to 30% and morbidity up to 50%. [1] Every hour of delay to surgery is associated with a 2.4% decreased probability of survival. [2-3] Approximately 66–88% of patients present with acute onset of severe, generalized abdominal pain. [2]
The following figure illustrates the pathogenesis of peptic ulcer disease, including the two principal mechanisms — H. pylori infection and NSAID-mediated mucosal injury — that underlie most cases of perforation.
1. History
- Onset and character: Sudden-onset, severe epigastric pain that rapidly becomes generalized — the hallmark presentation [1-2]
- Prior PUD symptoms: ~30% of patients have a known history of PUD; ask about prior dyspepsia, GERD, epigastric burning, nocturnal pain, belching [2][4]
- Timing: Duration of symptoms is critical — symptoms >24 hours and delay to surgery >12 hours worsen outcomes [3][5]
- Triggers: Recent NSAID/aspirin use, steroid use, alcohol binge, crack cocaine/amphetamine use, fasting (e.g., Ramadan), recent chemotherapy (bevacizumab) [1]
- Associated symptoms: Nausea, vomiting, fever, inability to move due to pain [6]
- Important negatives: Hematemesis/melena (suggests concurrent bleeding "kissing ulcer"), chest pain radiation (cardiac mimic), back pain (pancreatitis mimic) [1-2]
2. Alarm Features
- Board-like abdominal rigidity with generalized peritonitis [1]
- Hemodynamic instability: tachycardia, tachypnea, hypotension [2]
- Signs of sepsis or septic shock (fever, altered mental status, end-organ dysfunction) [1-2]
- Symptoms >24 hours with worsening trajectory [5]
- Age >70 years — higher failure rate of conservative management and higher mortality [1][5]
- Immunocompromised or steroid-dependent patients — may have blunted peritoneal signs masking severity [1]
3. Medications
Causative/Contributing
- NSAIDs (including aspirin) — block prostaglandin synthesis via COX-1 inhibition; responsible for a large proportion of perforations, especially gastric ulcers in the elderly [2][4]
- Corticosteroids — increase risk when combined with NSAIDs; can blunt signs of peritonitis [1][4]
- Bevacizumab and other VEGF inhibitors — increased GI perforation risk [1]
- Chemotherapy agents — general mucosal injury [2]
Acute Treatment Medications
- IV proton pump inhibitor (e.g., pantoprazole 80 mg bolus then 8 mg/hr infusion or 40 mg IV BID) [2-3]
- Broad-spectrum antibiotics — cover gram-negatives and anaerobes (e.g., piperacillin-tazobactam or ceftriaxone + metronidazole) [2-3]
- Crystalloid resuscitation [2]
Contraindicated
- NSAIDs and aspirin should be discontinued immediately [2]
- Oral medications — patient should be NPO [3]
4. Diet
- Acute phase: Strict NPO (nil per os) — essential to reduce ongoing contamination [2-3]
- Postoperative: Gradual advancement from clear liquids to soft diet as tolerated after surgical repair
- Long-term: Avoidance of alcohol, smoking, high-salt diet, and spicy foods; all contribute to ulcerogenic state [1-2]
- Adequate hydration during recovery; monitor for electrolyte disturbances from NGT suction and vomiting [6]
5. Review of Systems
- GI: Abdominal pain character/location, nausea, vomiting, hematemesis, melena, hematochezia, early satiety, bloating, change in bowel habits
- Cardiovascular: Chest pain, palpitations (rule out ACS as mimic; also assess for tachycardia/shock) [2]
- Respiratory: Dyspnea, pleuritic pain (referred diaphragmatic irritation can cause shoulder pain)
- Constitutional: Fever, chills, weight loss (raises concern for malignancy in gastric ulcers)
- Genitourinary: Urinary symptoms (rule out renal colic as mimic)
- Vascular: History of AAA or vascular disease (ruptured AAA is a critical mimic) [1]
6. Collateral History and Family History
- Collateral: Medication list (especially OTC NSAIDs, aspirin), alcohol and illicit drug use (crack cocaine, amphetamines), recent endoscopic procedures (iatrogenic perforation), prior bariatric surgery (marginal ulcer risk) [1][5]
- Family history: H. pylori infection in household contacts (acquired in childhood from close contacts), family history of PUD or gastric malignancy [4]
- Social context: Crowded childhood living conditions, poor water quality (risk for H. pylori), smoking history, psychological stress [4]
7. Risk Factors
- **H. pylori infection — responsible for 50–80% of perforated PUD cases [2]
- NSAID/aspirin use — ~36% of PUD cases; can cause ulcers within 7 days of initiation [4]
- Smoking — inhibits bicarbonate secretion, stimulates acid; strongly linked to PPU in patients <75 years [1]
- Alcohol — especially heavy use [1]
- Corticosteroid use — particularly when combined with NSAIDs [1][4]
- Older age — independent risk factor for complications and death [7]
- Prior PUD or inadequately treated PUD [5]
- Crack cocaine/amphetamine use — intense vasoconstriction → ischemia → mucosal necrosis [1]
- Fasting states (e.g., Ramadan) — increased acid on empty stomach [1]
- Post-bariatric surgery (marginal ulcer at anastomosis) [1]
- Zollinger-Ellison syndrome — recurrent, multiple, refractory ulcers [1]
- Critically ill/ICU patients — stress ulcers [1]
8. Differential Diagnosis
- Ruptured abdominal aortic aneurysm — must be excluded; high mortality if missed [1]
- Acute pancreatitis — epigastric pain radiating to back; elevated lipase; management is non-operative [1]
- Acute cholecystitis/cholangitis — RUQ pain, Murphy's sign, fever
- Acute mesenteric ischemia — pain out of proportion to exam, lactic acidosis
- Acute myocardial infarction — especially inferior MI can mimic epigastric pain; obtain ECG [2]
- Perforated diverticulitis — more common in LLQ; also causes pneumoperitoneum [1]
- Small bowel perforation (typhoid, Crohn's, foreign body)
- Boerhaave syndrome (esophageal perforation) — history of forceful vomiting, mediastinal air
- Ruptured ectopic pregnancy — in women of reproductive age
- Acute appendicitis — if pain migrates to RLQ
9. Past Medical History
- Prior peptic ulcer disease or H. pylori treatment (and eradication confirmation)
- Previous episodes of GI bleeding or perforation
- Bariatric surgery history (marginal ulcer risk) [1]
- Chronic NSAID/aspirin use for cardiovascular or musculoskeletal conditions
- Liver cirrhosis, renal failure, immunosuppression — all increase perioperative mortality [5]
- Zollinger-Ellison syndrome or MEN-1 [1]
- Prior abdominal surgeries (affects operative approach)
10. Physical Exam
Vital Signs
- Tachycardia, tachypnea — early signs [2]
- Fever — suggests established peritonitis/sepsis [2]
- Hypotension — late/ominous sign indicating septic shock [2]
Abdominal Exam
- Board-like rigidity — classic finding from chemical peritonitis due to acid exposure [1]
- Diffuse tenderness with rebound and guarding
- Absent bowel sounds (ileus)
- Peritonitis may be present in only two-thirds of patients — can be absent in contained/sealed leaks, obese patients, immunocompromised, elderly, or those on steroids [1][3]
Other
- Assess for signs of shock (cool extremities, delayed capillary refill, altered mentation)
- Rectal exam for melena (concurrent bleeding)
11. Lab Studies
Recommended
- CBC — leukocytosis (non-specific but associated with perforation) [3][5]
- BMP/CMP — assess renal function, electrolytes, glucose
- Lactate — marker of tissue hypoperfusion/sepsis severity
- ABG — metabolic acidosis, base deficit (prognostic value) [1][3]
- Lipase — to rule out acute pancreatitis [1]
- Serum amylase — may be elevated in perforation [3][5]
- Type and screen — preoperative preparation
- Coagulation studies (PT/INR, PTT) — preoperative
- Blood cultures — obtain before antibiotics in septic patients [1]
- Albumin — hypoalbuminemia is a risk factor for releak and poor outcomes [2]
- Troponin — if cardiac etiology is being considered
Expected Abnormalities
12. Imaging
First-line
- Upright chest X-ray[1][3][5]
Gold Standard
- CT abdomen/pelvis with IV contrast98% diagnostic accuracy[1-2]
Key CT Findings
- Pneumoperitoneum (extraluminal free air)
- Unexplained intraperitoneal fluid
- Bowel wall thickening at perforation site
- Mesenteric fat stranding
- Extraluminal contrast extravasation (if oral contrast given) [3][5]
When Imaging May Be Unnecessary
- frank peritonitis, sepsis, and free air on CXR[1][5]
Adjuncts
- Water-soluble oral contrast study (via NGT) if CT is negative but suspicion remains high [3]
- Up to 12% of perforations may have a normal CT [3][5]
13. Special Tests
Scoring Systems
- Boey Score — 3 risk factors (major medical illness, preoperative shock, duration of perforation >24 hours); predicts mortality [3]
- PULP Score (Peptic Ulcer Perforation Score) — incorporates age, comorbidities, shock, delay, and lab values [3]
- AAST Grading System (2016) — grades PPU 1–5 using clinical, radiographic, operative, and pathologic criteria [2]
- ASA Score — high ASA score associated with poor prognosis [3]
Point-of-Care
- POCUS/FAST — can detect free intraperitoneal fluid but lacks specificity for hollow-organ perforation [5]
- Bedside lactate
Procedures
14. ECG
- Obtain ECG on all patients presenting with acute epigastric pain to exclude acute coronary syndrome, particularly inferior MI which can mimic epigastric pathology [2]
- Look for ST-segment changes, T-wave inversions, new arrhythmias
- Sinus tachycardia is expected in PPU with pain/sepsis
- No specific ECG pattern is diagnostic of PPU
15. Assessment
Clinical Summary
Perforated peptic ulcer is a time-critical surgical emergency. Perforation occurs most commonly in the proximal duodenum (35–65%), followed by the pylorus (25–45%) and stomach (5–25%). [2] Mortality is approximately 9% overall but can reach 30% with delayed presentation or sepsis. [1][6]
Severity Stratification
- Stable, contained perforation: Young, hemodynamically stable, no peritonitis, sealed leak on contrast study → may consider NOM [1][5]
- Unstable, free perforation: Peritonitis, sepsis, hemodynamic instability, age >70 → emergent surgery [3][5]
Atypical Presentations
- Elderly, obese, immunocompromised, steroid-dependent, or patients with reduced consciousness may have minimal or absent peritoneal signs [1]
- Only two-thirds of patients present with frank peritonitis [1][3]
Complications
- Sepsis and multi-organ failure
- Concurrent bleeding ("kissing ulcers") [2]
- Releak after repair (12–17%) [2]
- Intra-abdominal abscess
- Wound infection
- Gastric outlet obstruction
16. Treatment Plan
Initial Stabilization (ED)
- ABCs, large-bore IV access, aggressive crystalloid resuscitation [2]
- NPO immediately [2]
- NGT to suction — decompression, reduce aspiration risk [2][6]
- IV PPI (e.g., pantoprazole 40 mg IV) [2]
- Broad-spectrum IV antibiotics — cover gram-negatives and anaerobes [2-3]
- Analgesia — IV opioids as needed (do not withhold for diagnostic purposes)
- Foley catheter — monitor urine output
- VTE prophylaxis [5]
Surgical Treatment (Definitive)
- Laparoscopic omental (Graham) patch repair — preferred approach for most perforations [2][6]
- Open repair if laparoscopic approach not feasible or in hemodynamically unstable patients [8]
- Distal gastrectomy reserved for large perforations near pylorus, gastric corpus perforations, or suspicion of malignancy [8]
- Damage control surgery in severely unstable patients with diffuse contamination [8]
- Biopsy ulcer edges (especially gastric) to rule out malignancy [4]
Nonoperative Management (Highly Selected Cases Only)
- Criteria: Age <70, hemodynamically stable, no peritonitis/sepsis, symptoms <24 hours, sealed leak confirmed on water-soluble contrast study [1][3][5]
- Includes: NPO, NGT, IV PPI, IV antibiotics, serial abdominal exams [1][3]
- If no improvement within 12 hours → proceed to surgery [5]
- NOM failure rate ~28–46% [3]
Post-Surgical
- H. pylori testing and eradication therapy [2]
- Discontinue NSAIDs; substitute acetaminophen [2][4]
- Long-term PPI therapy
- Follow-up endoscopy at 4–6 weeks (especially for gastric ulcers to rule out malignancy) [3]
17. Disposition
Admission Criteria (All PPU patients require admission)
- All confirmed or suspected perforated peptic ulcers require inpatient surgical admission [1]
- ICU admission for patients with sepsis, septic shock, hemodynamic instability, or multi-organ dysfunction [1]
Surgical Consultation Triggers
- Immediate general surgery consultation upon suspicion — do not delay for imaging if peritonitis is present [1]
- Pneumoperitoneum on any imaging modality [5]
- Free fluid with clinical peritonitis
Observation Indications
- serial abdominal exams every 4–6 hours[3][5]
Discharge Criteria (Post-Surgical)
- Tolerating oral diet
- Adequate pain control on oral medications
- Afebrile, stable vitals
- Return of bowel function
- Wound healing without signs of infection
18. Follow Up / Return Precautions
Follow-Up Timing
- Surgical follow-up in 1–2 weeks post-discharge
- Follow-up endoscopy at 4–6 weeks — confirm ulcer healing, biopsy gastric ulcers to exclude malignancy, confirm H. pylori eradication [3-4]
- H. pylori eradication confirmation testing (urea breath test or stool antigen) ≥4 weeks after completing antibiotics and ≥2 weeks off PPI [4]
Return Precautions
- Return immediately for: recurrent severe abdominal pain, fever, vomiting, inability to tolerate oral intake, wound redness/drainage, dizziness/lightheadedness, black/bloody stools
- Releak occurs in 12–17% of surgical repairs — patients should be counseled about this risk [2]
Patient Counseling
- Smoking cessation — strongly linked to ulcer recurrence and perforation [1]
- Alcohol abstinence [2]
- Avoid NSAIDs — use acetaminophen for pain; if NSAIDs are medically necessary, co-prescribe PPI [2][4]
- Complete full course of H. pylori eradication therapy if positive [2]
- PPI adherence for prescribed duration
Expected Recovery
- Hospital stay typically 5–10 days post-surgery depending on severity
- Full recovery 4–6 weeks; longer if complications occur
- Long-term mortality risk remains elevated for several years after surgery [1]
References
1. Perforated Peptic Ulcer. — Søreide K, Thorsen K, Harrison EM, et al. Lancet. 2015.
2. Management of Perforated Peptic Ulcer: A Review. — Arshad SA, Murphy P, Gould JC. JAMA Surgery. 2025.
3. Perforated and Bleeding Peptic Ulcer: WSES Guidelines. — Tarasconi A, Coccolini F, Biffl WL, et al. World Journal of Emergency Surgery : WJES. 2020.
4. Peptic Ulcer Disease: A Review. — Vakil N. The Journal of the American Medical Association. 2024.
5. Gastrointestinal Surgical Emergencies Textbook. — Ashley E. Aaron, Andrea Amabile, Ciro Andolfi, et al American College of Surgeons (2021). 2021.
6. Peptic Ulcer Disease. — Almadi MA, Lu Y, Alali AA, Barkun AN. Lancet. 2024.
7. Gastro-Esophageal Disorders of the Geriatric Population. — Yadlapati RH, Shaheen NJ. The American Journal of Gastroenterology. 2025.
8. Source Control in Emergency General Surgery: WSES, GAIS, SIS-E, SIS-A Guidelines. — Coccolini F, Sartelli M, Sawyer R, et al. World Journal of Emergency Surgery : WJES. 2023.