Weight Loss Surgery Complications and Risks 2 — Questions and Answers
Question 1: Which medication class should be strictly avoided after gastric bypass due to high risk of marginal ulcers?
- ACE inhibitors
- Nonsteroidal anti-inflammatory drugs (NSAIDs) (Correct answer)
- Beta blockers
- Statins
Correct answer: Nonsteroidal anti-inflammatory drugs (NSAIDs)
NSAIDs significantly increase the risk of marginal ulcers at the gastrojejunal anastomosis after Roux-en-Y gastric bypass.
Question 2: What is Wernicke's encephalopathy and how is it related to bariatric surgery?
- A brain disorder caused by iron deficiency after bariatric surgery
- A neurological condition caused by thiamine (B1) deficiency, which can occur after persistent vomiting post-surgery (Correct answer)
- Vitamin D deficiency-induced confusion in bariatric patients
- A psychiatric condition triggered by body image changes after weight loss
Correct answer: A neurological condition caused by thiamine (B1) deficiency, which can occur after persistent vomiting post-surgery
Wernicke's encephalopathy is caused by thiamine deficiency and can develop rapidly in bariatric patients with persistent vomiting who are not supplementing.
Question 3: What is 'band slippage' in adjustable gastric banding and what are its symptoms?
- The band erodes into the stomach, causing silent bleeding
- The stomach slips upward through the band creating an enlarged upper pouch, causing vomiting and reflux (Correct answer)
- The band's port becomes dislodged causing access difficulty
- The band deflates spontaneously, reducing restriction
Correct answer: The stomach slips upward through the band creating an enlarged upper pouch, causing vomiting and reflux
Band slippage occurs when the stomach migrates upward through the band, creating an enlarged pouch, typically presenting with vomiting and GERD.
Question 4: Which lab finding is a red flag for serious nutritional complications in a bariatric patient presenting with fatigue and pallor?
- Elevated HDL cholesterol
- Low hemoglobin with microcytic or macrocytic anemia (Correct answer)
- Mildly elevated fasting glucose
- Elevated alkaline phosphatase
Correct answer: Low hemoglobin with microcytic or macrocytic anemia
Anemia in bariatric patients may be microcytic (iron deficiency) or macrocytic (B12/folate deficiency) and requires prompt evaluation and supplementation.
Question 5: What is 'band erosion' (intragastric band migration) and how is it typically treated?
- The band slips over the stomach, treated with band adjustment
- The band gradually erodes through the stomach wall into the gastric lumen, requiring endoscopic or surgical removal (Correct answer)
- The band causes scar tissue around the stomach, treated with steroids
- The band's tubing breaks under skin, requiring replacement surgery
Correct answer: The band gradually erodes through the stomach wall into the gastric lumen, requiring endoscopic or surgical removal
Band erosion occurs when the silicone band slowly migrates through the stomach wall; once inside the stomach, it must be removed endoscopically or surgically.
Question 6: Protein calorie malnutrition after bariatric surgery most commonly presents with which clinical findings?
- Weight loss plateau and increased appetite
- Muscle wasting, hair loss (telogen effluvium), fatigue, and low serum albumin (Correct answer)
- Constipation, bloating, and decreased bowel sounds
- Elevated liver enzymes and jaundice
Correct answer: Muscle wasting, hair loss (telogen effluvium), fatigue, and low serum albumin
Inadequate protein intake leads to muscle catabolism, telogen effluvium (hair loss), fatigue, and decreased serum protein levels.
Weight Loss Surgery Complications and Risks 2
Which medication class should be strictly avoided after gastric bypass due to high risk of marginal ulcers?