CBC Nutritional Science for Bariatrics Questions and Answers 1 — Questions and Answers
Question 1: A patient, 9 months post-Roux-en-Y Gastric Bypass, complains of new-onset neurological symptoms, including tingling in their feet and memory problems. They admit to being inconsistent with their vitamin regimen. Which micronutrient deficiency is MOST likely responsible for these specific symptoms?
- Iron
- Vitamin B12 (Correct answer)
- Vitamin D
- Zinc
Correct answer: Vitamin B12
Vitamin B12 deficiency is a significant risk after Roux-en-Y Gastric Bypass because the surgery bypasses the primary sites of intrinsic factor production and B12 absorption. It classically presents with neurological symptoms such as paresthesias (tingling/numbness), ataxia (impaired coordination), and cognitive changes like memory loss.
Question 2: What is the primary reason for prioritizing a high protein intake (e.g., a minimum of 60-80 grams per day) in the diet of a post-bariatric surgery patient?
- To provide the main source of calories for energy
- To prevent dumping syndrome by slowing gastric emptying
- To aid in wound healing and preserve lean body mass during rapid weight loss (Correct answer)
- To increase the absorption of fat-soluble vitamins
Correct answer: To aid in wound healing and preserve lean body mass during rapid weight loss
During the period of rapid weight loss following bariatric surgery, adequate protein intake is critical to support the healing of surgical incisions and to prevent the body from breaking down muscle tissue for energy. Preserving lean body mass helps maintain metabolic rate and physical strength.
Question 3: Which of the following is the recommended form of calcium supplementation for patients who have undergone a Roux-en-Y Gastric Bypass (RYGB) or Sleeve Gastrectomy?
- Calcium phosphate
- Calcium citrate (Correct answer)
- Calcium carbonate
- Calcium lactate
Correct answer: Calcium citrate
Bariatric procedures like RYGB and sleeve gastrectomy significantly reduce stomach acid production. Calcium citrate does not require an acidic environment for absorption, making it the preferred and more bioavailable form for these patients. Calcium carbonate, in contrast, requires stomach acid to be absorbed effectively.
Question 4: A patient who is 4 months post-sleeve gastrectomy reports significant hair loss. They are meeting their protein and fluid goals and are otherwise feeling well. What is the most appropriate initial response for the counselor to provide?
- Advise them to stop their multivitamin, as it could be the cause.
- Recommend they immediately double their protein intake to 150 grams per day.
- Reassure them that this is often a temporary condition called telogen effluvium caused by the stress of surgery and rapid weight loss, while also verifying supplement compliance. (Correct answer)
- Suggest they start taking a high-dose biotin supplement, as that is the only cure for post-surgical hair loss.
Correct answer: Reassure them that this is often a temporary condition called telogen effluvium caused by the stress of surgery and rapid weight loss, while also verifying supplement compliance.
Significant but temporary hair shedding, known as telogen effluvium, is a common response to the physiological stress of surgery and rapid weight loss, typically occurring 3-6 months post-op. The best initial step is to educate and reassure the patient that it is usually temporary, while also ensuring they remain compliant with their full nutritional regimen (protein, vitamins, and minerals).
Question 5: A core dietary guideline for post-bariatric surgery patients is to separate solids from liquids (e.g., no drinking for 30 minutes before, during, or after eating). What is the primary physiological reason for this recommendation?
- To decrease the overall risk of developing kidney stones.
- To maximize the intestinal absorption of Vitamin B12.
- To prevent the dilution of essential digestive enzymes in the small intestine.
- To avoid pushing food too quickly through the small stomach, which can reduce satiety and cause discomfort. (Correct answer)
Correct answer: To avoid pushing food too quickly through the small stomach, which can reduce satiety and cause discomfort.
Drinking liquids with or near meals can flush solid food through the small gastric pouch or sleeve prematurely. This action reduces the feeling of fullness (satiety), potentially allowing for larger meal volumes, and can cause physical discomfort. It is a key behavioral strategy to maximize restriction and prevent overeating.
Question 6: A bariatric patient with a history of persistent post-operative nausea and vomiting is at the highest risk for which of the following acute and potentially life-threatening neurological conditions?
- Wernicke's Encephalopathy (Thiamine deficiency) (Correct answer)
- Scurvy (Vitamin C deficiency)
- Pellagra (Niacin deficiency)
- Pernicious Anemia (Vitamin B12 deficiency)
Correct answer: Wernicke's Encephalopathy (Thiamine deficiency)
Thiamine (Vitamin B1) is a water-soluble vitamin with very limited body stores. Persistent vomiting can rapidly deplete thiamine levels, leading to Wernicke's Encephalopathy, a neurological emergency characterized by confusion, ataxia, and vision changes. It requires immediate medical intervention to prevent irreversible brain damage.
CBC Nutritional Science for Bariatrics Questions and Answers 1
A patient, 9 months post-Roux-en-Y Gastric Bypass, complains of new-onset neurological symptoms, including tingling in their feet and memory problems.
They admit to being inconsistent with their vitamin regimen.
Which micronutrient deficiency is MOST likely responsible for these specific symptoms?