CBC Bariatric Surgical Procedures Questions and Answers — Questions and Answers
Question 1: Which bariatric procedure functions primarily through restriction of food intake and does NOT involve intestinal bypass, thereby minimizing the risk of nutrient malabsorption?
- Laparoscopic Sleeve Gastrectomy (LSG) (Correct answer)
- Roux-en-Y Gastric Bypass (RYGB)
- Biliopancreatic Diversion with Duodenal Switch (BPD/DS)
- Single Anastomosis Duodeno-Ileal Bypass with Sleeve Gastrectomy (SADI-S)
Correct answer: Laparoscopic Sleeve Gastrectomy (LSG)
Laparoscopic Sleeve Gastrectomy involves removing a large portion of the stomach to create a smaller, banana-shaped stomach or 'sleeve'. This procedure is purely restrictive, as it reduces the amount of food the stomach can hold. Unlike RYGB, BPD/DS, and SADI-S, it does not alter the path of the small intestine, meaning nutrient absorption remains largely intact.
Question 2: A patient who underwent a Roux-en-Y Gastric Bypass (RYGB) 6 weeks ago calls the clinic in distress. They report experiencing nausea, cramping, sweating, and rapid heartbeat about 20 minutes after eating a small piece of birthday cake. As a Certified Bariatric Counselor, you should recognize these symptoms as characteristic of:
- A staple line leak
- An anastomotic stricture
- Early dumping syndrome (Correct answer)
- Late dumping syndrome
Correct answer: Early dumping syndrome
Early dumping syndrome occurs when sugary or high-fat foods move too quickly from the small stomach pouch into the small intestine. This rapid transit pulls fluid into the intestine, causing symptoms like cramping, nausea, sweating, and palpitations within 30-60 minutes of eating. Late dumping syndrome occurs 1-3 hours after eating and is related to reactive hypoglycemia. Staple line leaks and strictures present with different symptoms, such as severe abdominal pain, fever, or vomiting.
Question 3: The Biliopancreatic Diversion with Duodenal Switch (BPD/DS) offers the highest potential for weight loss but also carries the greatest risk for which of the following long-term complications?
- Gastroesophageal reflux disease (GERD)
- Port-site herniation
- Severe protein-calorie malnutrition and vitamin deficiencies (Correct answer)
- Development of gallstones
Correct answer: Severe protein-calorie malnutrition and vitamin deficiencies
The BPD/DS is the most malabsorptive of the common bariatric procedures, bypassing a significant portion of the small intestine. This leads to a substantial decrease in the absorption of calories, fats, and essential nutrients, creating a high risk for severe and lifelong protein malnutrition and deficiencies in fat-soluble vitamins (A, D, E, K) and other micronutrients.
Question 4: A client who had an adjustable gastric band (Lap-Band) placed several years ago is experiencing inadequate weight loss and has developed significant acid reflux. They are considering a revisional procedure. Which of the following is a common and effective surgical conversion from a gastric band?
- Placement of a second gastric band
- Conversion to a Sleeve Gastrectomy or Gastric Bypass (Correct answer)
- Reversal of the gastric band only
- Endoscopic suturing of the stomach pouch
Correct answer: Conversion to a Sleeve Gastrectomy or Gastric Bypass
Due to complications like band slippage, erosion, inadequate weight loss, or severe GERD, gastric bands may be removed. A common next step is a conversion to a more effective procedure like the Sleeve Gastrectomy or Roux-en-Y Gastric Bypass, which addresses weight loss through different and more permanent mechanisms.
Question 5: Which newer bariatric procedure combines a sleeve gastrectomy with a loop of small intestine connected to the duodenum, creating both restrictive and malabsorptive effects with a single intestinal connection (anastomosis)?
- Roux-en-Y Gastric Bypass (RYGB)
- Biliopancreatic Diversion with Duodenal Switch (BPD/DS)
- Laparoscopic Adjustable Gastric Banding (LAGB)
- Single Anastomosis Duodeno-Ileal Bypass with Sleeve Gastrectomy (SADI-S) (Correct answer)
Correct answer: Single Anastomosis Duodeno-Ileal Bypass with Sleeve Gastrectomy (SADI-S)
The SADI-S procedure involves creating a sleeve gastrectomy and then attaching a loop of the ileum (the lower part of the small intestine) to the duodenum. This design, with only one new intestinal connection, is simpler than the traditional BPD/DS while still providing significant restrictive and malabsorptive effects for weight loss and comorbidity resolution.
Question 6: A patient who underwent a Roux-en-Y Gastric Bypass is at a significantly higher risk for which specific nutrient deficiency compared to a patient who had a Sleeve Gastrectomy, due to bypassing the primary absorption site for this nutrient?
- Vitamin C
- Potassium
- Vitamin B12 (Correct answer)
- Vitamin K
Correct answer: Vitamin B12
Vitamin B12 requires intrinsic factor, produced in the larger, bypassed portion of the stomach, for absorption in the terminal ileum. In a Roux-en-Y Gastric Bypass, the food stream bypasses the main part of the stomach and the duodenum, severely limiting the mixing of food with intrinsic factor and acid, thus significantly impairing B12 absorption. While deficiencies can occur after sleeve gastrectomy, the risk for B12 deficiency is markedly higher after RYGB.
CBC Bariatric Surgical Procedures Questions and Answers
Which bariatric procedure functions primarily through restriction of food intake and does NOT involve intestinal bypass, thereby minimizing the risk of nutrient malabsorption?