Guidelines for Diagnosing Peptic Ulcer Disease
Clinical Presentation
- The typical presentation of peptic ulcer disease includes sudden onset of abdominal pain, with localized or generalized peritonitis in cases of perforation 1, 4
- Physical examination findings may be equivocal, and peritonitis may be present in only two-thirds of patients with perforated peptic ulcer 1
Diagnostic Algorithm
Laboratory Studies
- Routine laboratory studies and arterial blood gas analysis are strongly recommended in patients with suspected gastroduodenal perforation 1, 2
- Laboratory tests are generally non-specific, though leukocytosis, metabolic acidosis, and elevated serum amylase are usually associated with perforation 1
Imaging Studies
- CT scan is strongly recommended as the first radiological examination in patients with suspected perforated peptic ulcer (Strong recommendation, 1C) 2, 3
- CT findings suggestive of perforation include unexplained intraperitoneal fluid, pneumoperitoneum, bowel wall thickening, mesenteric fat streaking, and extraluminal water-soluble contrast 1
- Chest/abdominal X-ray should be performed as the initial diagnostic assessment when CT is not immediately available (Strong recommendation, 1C) 2, 3
- Free air on X-ray ranges between 30-85% of perforations, making it less reliable than CT 1
- Water-soluble contrast administered orally or via nasogastric tube is suggested to detect gastro-duodenal perforation (Weak recommendation, 2D) 2, 3
- Triple contrast CT scan may improve diagnostic sensitivity and specificity when initial CT is normal 1
Risk Stratification
- Scoring systems including Boey, PULP, and ASA scores are suggested for risk stratification of patients with perforated peptic ulcer (Weak recommendation, 2C) 5, 6
- SOFA and qSOFA scores can be used to evaluate disease severity in patients with perforated peptic ulcer (Weak recommendation, 2C) 6
- Hypoalbuminemia remains the strongest single predictor of mortality in perforated peptic ulcer 6