Anastomotic Leak Complications in Gastric Bypass Procedures

Clinical Presentation and Diagnosis

The combination of fever, tachycardia, and tachypnea are significant predictors of an anastomotic leak after sleeve gastrectomy and Roux-en-Y gastric bypass 1, 2
Alarming clinical signs include tachycardia ≥110 beats per minute, fever ≥38°C, hypotension, respiratory distress with tachypnea, and decreased urine output 1, 3
Abdominal pain is a consistent symptom in patients with anastomotic leaks 4, 5

Intestinal obstruction (including internal hernias) is common after gastric bypass but typically presents with crampy/colicky abdominal pain and can often be managed with timely intervention 6, 4
Urolithiasis is a long-term complication that rarely causes immediate life-threatening issues 7
Hypocalcemia is a metabolic complication that can usually be managed with supplementation 7
Hepatic failure is rare as an immediate post-operative complication of gastric bypass 7

Prompt diagnostic work-up and laparoscopic surgical exploration in patients with persistent abdominal pain and/or gastrointestinal symptoms, especially when associated with fever, tachycardia, and tachypnea 1, 3
Careful monitoring of vital signs and symptoms in the early post-operative period 1, 2