## Most Common Cause of Death in Variceal Bleeding **Key Point:** In acute variceal bleeding episodes, exsanguination from uncontrolled hemorrhage is the leading immediate cause of death, occurring in 10–20% of patients despite medical and endoscopic therapy. ### Pathophysiology Esophageal varices rupture due to portal hypertension (portal pressure >12 mmHg). Once bleeding begins, rapid blood loss overwhelms compensatory mechanisms: - Hypovolemic shock develops within minutes to hours - Endoscopic therapy (variceal ligation or sclerotherapy) controls bleeding in ~80–90% of cases - Pharmacotherapy (octreotide, terlipressin) reduces portal pressure but does not stop active hemorrhage - Refractory bleeding (failure to control after 2 endoscopic attempts) carries mortality >50% ### Why Other Causes Are Less Common as Immediate Death | Complication | Timing | Frequency | Role in Variceal Bleeding | |---|---|---|---| | **Exsanguination** | Immediate (hours) | 10–20% mortality | **PRIMARY cause of death** | | **Hepatic encephalopathy** | Days to weeks | Develops post-bleeding | Secondary to ammonia surge from GI blood | | **Hepatorenal syndrome** | Days to weeks | Follows severe bleeding | Occurs after initial hemorrhage controlled | | **SBP** | Variable | Complicates ascites | Not directly from variceal bleeding | **Clinical Pearl:** The 6-week mortality after variceal bleeding is ~20%, with exsanguination accounting for most early deaths (first 48 hours). Late deaths (after day 5) are more commonly from hepatic decompensation, encephalopathy, or renal failure. **High-Yield:** Remember the **"Golden 6 hours"** rule—aggressive resuscitation and endoscopic therapy within 6 hours of presentation dramatically reduces mortality from exsanguination. [cite:Harrison 21e Ch 297]
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