CBC Post-Surgical Nutritional Care — Questions and Answers

Question 1: A patient 3 weeks after Roux-en-Y gastric bypass reports dizziness, sweating, and rapid heartbeat 30 minutes after eating a sweetened yogurt. What is the most likely cause?

Early dumping syndrome (Correct answer)
Anastomotic leak
Vitamin B12 deficiency
Gallbladder disease

Correct answer: Early dumping syndrome

Early dumping syndrome occurs 15-30 minutes after eating high-sugar foods due to rapid gastric emptying into the small intestine.

Question 2: What is the recommended daily protein intake for most patients following bariatric surgery?

60-80 grams (Correct answer)
20-30 grams
150-200 grams
40-50 grams

Correct answer: 60-80 grams

Most post-bariatric guidelines recommend 60-80 grams of protein daily to preserve lean body mass during rapid weight loss.

Question 3: Why are patients advised to avoid drinking liquids within 30 minutes of meals after bariatric surgery?

Liquids can flush food through the pouch, reducing satiety and increasing intake (Correct answer)
Liquids dilute stomach acid and prevent all digestion
Drinking with meals causes vitamin toxicity
Liquids cause the surgical staples to dissolve

Correct answer: Liquids can flush food through the pouch, reducing satiety and increasing intake

Drinking with meals accelerates pouch emptying, which reduces fullness and can lead to overeating or dumping symptoms.

Question 4: Which form of calcium is preferred for supplementation after gastric bypass, and why?

Calcium citrate, because it does not require stomach acid for absorption (Correct answer)
Calcium carbonate, because it is cheaper
Calcium oxalate, because it binds fat
Calcium chloride, because it dissolves fastest

Correct answer: Calcium citrate, because it does not require stomach acid for absorption

Calcium citrate is absorbed without gastric acid, which is reduced after bypass procedures.

Question 5: A sleeve gastrectomy patient at 6 months reports hair loss. Which nutritional factors should the counselor evaluate first?

Protein, zinc, and iron intake (Correct answer)
Sodium and potassium intake
Fiber and water intake
Carbohydrate and saturated fat intake

Correct answer: Protein, zinc, and iron intake

Telogen effluvium after bariatric surgery is commonly linked to inadequate protein, zinc, and iron.

Question 6: During the immediate post-operative diet progression, which stage typically comes directly after clear liquids?

Full liquids (Correct answer)
Soft foods
Pureed foods
Regular solid foods

Correct answer: Full liquids

The standard progression is clear liquids, then full liquids, then pureed, then soft, then regular textures.

Question 7: Why is vitamin B12 supplementation lifelong for gastric bypass patients?

Reduced intrinsic factor and stomach acid impair B12 absorption permanently (Correct answer)
B12 is destroyed by anesthesia during surgery
The liver stops storing B12 after surgery
B12 is only found in foods banned after surgery

Correct answer: Reduced intrinsic factor and stomach acid impair B12 absorption permanently

Bypassing the stomach reduces intrinsic factor and acid needed to release and absorb B12 from food.

Question 8: A patient 18 months post-bypass reports shakiness, confusion, and hunger 2 hours after a high-carbohydrate meal. What condition should the counselor suspect?

Late dumping syndrome (reactive hypoglycemia) (Correct answer)
Early dumping syndrome
Marginal ulcer
Lactose intolerance

Correct answer: Late dumping syndrome (reactive hypoglycemia)

Late dumping occurs 1-3 hours after eating when an exaggerated insulin response causes reactive hypoglycemia.

Question 9: Which micronutrient deficiency after bariatric surgery can cause Wernicke encephalopathy if untreated?

Thiamine (vitamin B1) (Correct answer)
Vitamin C
Vitamin K
Biotin

Correct answer: Thiamine (vitamin B1)

Thiamine deficiency, often triggered by persistent vomiting, can rapidly progress to Wernicke encephalopathy.

Question 10: A counselor notices a patient is consuming milkshakes and melted ice cream to cope with restriction. What is this behavior called?

Soft calorie or liquid calorie syndrome (eating around the surgery) (Correct answer)
Dumping syndrome
Orthorexia
Nutrient cycling

Correct answer: Soft calorie or liquid calorie syndrome (eating around the surgery)

Consuming calorie-dense liquids bypasses the restrictive effect of surgery and undermines weight loss.

Question 11: How should iron and calcium supplements be scheduled after bariatric surgery?

Taken at least 2 hours apart because calcium inhibits iron absorption (Correct answer)
Always taken together to improve absorption
Both taken only with dairy products
Alternated weekly to prevent toxicity

Correct answer: Taken at least 2 hours apart because calcium inhibits iron absorption

Calcium competes with iron for absorption, so doses should be separated by about 2 hours.

Question 12: Which eating behavior is most important for preventing food getting stuck after sleeve gastrectomy?

Chewing thoroughly and eating slowly with small bites (Correct answer)
Drinking water with every bite
Eating only cold foods
Lying down after meals

Correct answer: Chewing thoroughly and eating slowly with small bites

Thorough chewing and slow eating prevent obstruction and discomfort in the narrow sleeve.

Question 13: A patient asks why carbonated beverages are discouraged after bariatric surgery. What is the best response?

Gas can cause pouch discomfort, bloating, and may encourage pouch stretching over time (Correct answer)
Carbonation dissolves surgical sutures
Bubbles neutralize all stomach enzymes
Carbonated drinks always cause ulcers

Correct answer: Gas can cause pouch discomfort, bloating, and may encourage pouch stretching over time

Carbonation introduces gas that distends the small pouch, causing pain and potentially contributing to stretching.

Question 14: Which lab finding at a 12-month follow-up most suggests inadequate protein intake in a bariatric patient?

Low serum albumin (Correct answer)
Elevated hemoglobin A1c
High serum sodium
Elevated LDL cholesterol

Correct answer: Low serum albumin

Low albumin reflects protein-energy malnutrition, a key monitoring marker after bariatric surgery.

Question 15: A duodenal switch patient is at highest risk for deficiency of which vitamins compared with other bariatric procedures?

Fat-soluble vitamins A, D, E, and K (Correct answer)
Water-soluble vitamins B1 and C only
Vitamin B6 and folate only
Choline and biotin only

Correct answer: Fat-soluble vitamins A, D, E, and K

The duodenal switch causes significant fat malabsorption, greatly increasing risk of fat-soluble vitamin deficiencies.

Question 16: A patient 2 weeks post-surgery reports drinking only 500 mL of fluid daily. What is the counselor's primary concern?

Dehydration, the most common cause of readmission after bariatric surgery (Correct answer)
Excessive weight loss
Vitamin A toxicity
Protein overconsumption

Correct answer: Dehydration, the most common cause of readmission after bariatric surgery

Inadequate fluid intake leads to dehydration, which is the leading reason for hospital readmission after bariatric surgery.

Question 17: Why should NSAIDs like ibuprofen generally be avoided after Roux-en-Y gastric bypass?

They increase the risk of marginal ulcers at the anastomosis (Correct answer)
They block protein absorption
They cause dumping syndrome
They prevent calcium citrate from dissolving

Correct answer: They increase the risk of marginal ulcers at the anastomosis

NSAIDs significantly raise the risk of marginal ulceration at the gastrojejunal anastomosis.

Question 18: A pregnant patient 1 year after gastric bypass asks about nutrition. What is the most important counseling point?

She needs closer micronutrient monitoring, including B12, iron, folate, and vitamin D (Correct answer)
She should stop all supplements during pregnancy
She should return to a liquid diet for the first trimester
Pregnancy reverses malabsorption so no changes are needed

Correct answer: She needs closer micronutrient monitoring, including B12, iron, folate, and vitamin D

Pregnancy after bariatric surgery requires enhanced micronutrient surveillance because deficiencies can harm fetal development.

Question 19: Which protein source is most appropriate during the full-liquid stage after surgery?

Whey protein isolate shakes or skim milk (Correct answer)
Grilled chicken breast
Peanut butter on toast
Scrambled eggs with cheese

Correct answer: Whey protein isolate shakes or skim milk

Liquid protein sources such as whey isolate shakes meet protein goals while respecting the liquid-only texture stage.

Question 20: A patient reports intolerance to red meat 4 months after sleeve gastrectomy. What should the counselor recommend first?

Substitute moist, softer protein sources like fish, eggs, and ground poultry (Correct answer)
Eliminate all protein until tolerance returns
Switch entirely to protein bars
Eat red meat anyway in larger portions

Correct answer: Substitute moist, softer protein sources like fish, eggs, and ground poultry

Dense, dry meats are commonly poorly tolerated, so moist and softer proteins help maintain intake.

Question 21: What is the main nutritional rationale for prioritizing protein first at each meal post-surgery?

Limited pouch capacity means protein must be eaten before filling up on other foods (Correct answer)
Protein is digested only in the morning
Carbohydrates are toxic after surgery
Protein eaten last causes dumping

Correct answer: Limited pouch capacity means protein must be eaten before filling up on other foods

Because portion capacity is small, eating protein first ensures requirements are met before satiety occurs.

CBC Post-Surgical Nutritional Care

A patient 3 weeks after Roux-en-Y gastric bypass reports dizziness, sweating, and rapid heartbeat 30 minutes after eating a sweetened yogurt.
What is the most likely cause?

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