CBC Bariatric Surgery and Procedures Questions and Answers 1 — Questions and Answers
Question 1: A bariatric procedure involves surgically removing approximately 75-80% of the stomach along the greater curvature, creating a narrow, tube-like stomach without bypassing the intestines. Which procedure is this?
- Roux-en-Y Gastric Bypass (RYGB)
- Adjustable Gastric Band (AGB)
- Sleeve Gastrectomy (SG) (Correct answer)
- Biliopancreatic Diversion with Duodenal Switch (BPD/DS)
Correct answer: Sleeve Gastrectomy (SG)
The Sleeve Gastrectomy (SG) is a restrictive procedure where a large portion of the stomach is permanently removed, creating a smaller, sleeve-shaped stomach. [2, 4, 6] This reduces food intake capacity and favorably impacts gut hormones that regulate hunger, like ghrelin. The other procedures involve either placing a band (AGB) or bypassing parts of the intestine (RYGB, BPD/DS). [24]
Question 2: A patient who underwent a Roux-en-Y Gastric Bypass (RYGB) six months ago reports experiencing nausea, cramping, dizziness, and a rapid heartbeat within 30 minutes of eating a meal high in sugar. What is the most likely cause of these symptoms?
- Gastric stricture
- Dumping syndrome (Correct answer)
- Dehydration
- Cholelithiasis (gallstones)
Correct answer: Dumping syndrome
Dumping syndrome is a common complication after RYGB, caused by the rapid passage of concentrated food, particularly sugars, from the small stomach pouch directly into the small intestine. [12, 28] This triggers a fluid shift and hormonal response, leading to the described gastrointestinal and vasomotor symptoms. [29]
Question 3: Which of the following bariatric procedures creates weight loss through a combination of restriction and the most significant degree of malabsorption, putting patients at the highest risk for protein and fat-soluble vitamin deficiencies?
- Adjustable Gastric Band (AGB)
- Sleeve Gastrectomy (SG)
- Roux-en-Y Gastric Bypass (RYGB)
- Biliopancreatic Diversion with Duodenal Switch (BPD/DS) (Correct answer)
Correct answer: Biliopancreatic Diversion with Duodenal Switch (BPD/DS)
The Biliopancreatic Diversion with Duodenal Switch (BPD/DS) is the most powerful procedure for weight loss, primarily due to its significant malabsorptive component. [5, 17] It bypasses a large portion of the small intestine, severely limiting the absorption of calories, fat, and fat-soluble vitamins (A, D, E, K), which necessitates rigorous, lifelong supplementation and monitoring. [8, 19]
Question 4: A bariatric counselor is educating a patient about the typical post-operative diet progression. What dietary stage does a patient enter IMMEDIATELY following surgery to allow for initial healing?
- Pureed foods
- Soft, moist foods
- Full liquids with protein shakes
- Clear liquids only (Correct answer)
Correct answer: Clear liquids only
The immediate post-operative diet (Stage 1) consists of only clear liquids, such as water, broth, and sugar-free gelatin. [7, 10, 20] This approach minimizes stress on the new staple lines, prevents dehydration, and allows the stomach to begin healing before advancing to thicker liquids and more complex foods.
Question 5: During a pre-surgical evaluation, a bariatric candidate discloses an ongoing, untreated substance abuse disorder involving heavy daily alcohol use. According to ASMBS guidelines and general clinical practice, this condition is considered a(n):
- Factor that necessitates a purely restrictive procedure
- Relative contraindication that can be managed with a brief delay
- Absolute contraindication requiring treatment and sobriety before reconsideration (Correct answer)
- Issue to be addressed primarily in post-operative counseling
Correct answer: Absolute contraindication requiring treatment and sobriety before reconsideration
Active, untreated alcohol or drug dependency is widely considered an absolute contraindication for bariatric surgery. [11, 25] It poses significant risks during and after surgery, severely impairs the patient's ability to adhere to the required post-operative lifestyle changes, and increases the risk of addiction transfer. The condition must be treated, with a demonstrated period of sobriety, before surgery can be safely considered.
Question 6: Which of the following describes the primary mechanism of action for the Laparoscopic Adjustable Gastric Band (LAGB)?
- Hormonal alteration by removing the fundus of the stomach
- Purely restrictive by creating a small upper stomach pouch with an inflatable band (Correct answer)
- Malabsorptive by bypassing the duodenum and a portion of the jejunum
- A combination of restriction and malabsorption
Correct answer: Purely restrictive by creating a small upper stomach pouch with an inflatable band
The Adjustable Gastric Band works through a purely restrictive mechanism. [1, 3] A silicone band is placed around the upper part of the stomach, creating a small pouch that limits food intake and promotes a feeling of fullness. Unlike other procedures, it does not involve removing any part of the stomach or rerouting the intestines, so it does not cause malabsorption or significant hormonal changes. [9, 24]
CBC Bariatric Surgery and Procedures Questions and Answers 1
A bariatric procedure involves surgically removing approximately 75-80% of the stomach along the greater curvature, creating a narrow, tube-like stomach without bypassing the intestines.
Which procedure is this?