## Complications of Peptic Ulcer Disease **Key Point:** Hemorrhage is the most common complication of peptic ulcer disease (occurs in 15–20% of patients), NOT gastric outlet obstruction. Gastric outlet obstruction is a late complication that occurs in only 2–4% of cases, typically after years of scarring. ### Frequency of Complications | Complication | Incidence | Notes | |---|---|---| | **Hemorrhage** | 15–20% | Most common; presents with hematemesis/melena | | **Perforation** | 5–10% | More common in duodenal ulcers; surgical emergency | | **Penetration** | 3–5% | Ulcer erodes into adjacent organs (pancreas, liver) | | **Gastric outlet obstruction** | 2–4% | Late complication; rare in modern era | ### Why Each Statement Is Correct (Except #3) **Statement 1 — Perforation more common in duodenal ulcers:** - Duodenal ulcers perforate in ~10% of cases - Gastric ulcers perforate in ~5% of cases - Duodenal location: anterior wall, thin serosa → easier perforation **Statement 2 — Penetration into pancreas:** - Posterior duodenal ulcers penetrate into the pancreatic head - Causes severe epigastric pain radiating to the back - May elevate amylase/lipase **Statement 3 — H. pylori eradication in PPI-treated patients:** - **This is TRUE and essential** — H. pylori should be eradicated regardless of PPI use - Persistent H. pylori infection increases gastric cancer risk - Eradication therapy (triple or quadruple) is standard of care - PPI monotherapy does NOT eliminate the need for eradication **Statement 4 — Gastric outlet obstruction as most common complication:** - **FALSE** — This is the LEAST common complication - Hemorrhage is the most common (15–20%) - Gastric outlet obstruction occurs in only 2–4% of cases - Presents with vomiting, weight loss, abdominal distension **High-Yield:** In the modern era of effective acid suppression and H. pylori eradication, the incidence of all complications has declined dramatically. Hemorrhage remains the most common, and perforation the most immediately life-threatening. **Clinical Pearl:** A patient with chronic duodenal ulcer on long-term PPI should still undergo H. pylori testing and eradication if positive — PPI suppresses symptoms but does not cure the infection or reduce malignancy risk.
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