# Situation: A 58-year-old woman had a total gastrectomy for gastric adenocarcinoma 10 days ago. She now eats small meals and is preparing for discharge. She has no diabetes. The nurse is planning her diet teaching to reduce dumping. Which instructions should the plan include? 1. Eat about six small meals a day. 2. Drink a full glass of water with each meal. 3. Lie down for 20 to 30 minutes after each meal. 4. Choose protein and complex starches over sweets. 5. Choose a high-carbohydrate, low-fat diet for energy.

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> subject: Nursing Practice IV — Care of Clients with Problems in Nutrition and Gastrointestinal, Metabolism and Endocrine, Perception and Coordination

## 문제

Situation: A 58-year-old woman had a total gastrectomy for gastric adenocarcinoma 10 days ago. She now eats small meals and is preparing for discharge. She has no diabetes.

The nurse is planning her diet teaching to reduce dumping. Which instructions should the plan include?
1. Eat about six small meals a day.
2. Drink a full glass of water with each meal.
3. Lie down for 20 to 30 minutes after each meal.
4. Choose protein and complex starches over sweets.
5. Choose a high-carbohydrate, low-fat diet for energy.

## 보기

1. 1, 2 and 4
2. 2, 3 and 5
3. 1, 3 and 4 **✔ 정답**
4. 1, 4 and 5

**정답: 3**

## 해설

The dumping diet slows the passage of food into the small intestine: small frequent meals, protein and complex carbohydrates instead of simple sugars, fluids taken 30 minutes before or after meals rather than with them, and lying down for about 20 to 30 minutes after eating. A high-carbohydrate diet worsens dumping; protein and moderate fat are favored.

## 심화 해설

The scenario describes a patient 10 days after total gastrectomy who is preparing for discharge and needs education to prevent dumping syndrome. Dumping occurs when hyperosmolar gastric contents empty too rapidly into the small intestine, triggering fluid shifts, vasomotor symptoms, and reactive hypoglycemia. After total gastrectomy, the gastric reservoir and pyloric control are lost, so dietary and positional strategies become the primary defense.

The correct combination is 1, 3, and 4.

Why each instruction is correct or incorrect

| Instruction | Correct? | Rationale |
| --- | --- | --- |
| 1. Eat about six small meals a day | Yes | Small, frequent meals reduce the volume delivered to the jejunum at any one time, limiting the osmotic surge that drives early dumping. |
| 2. Drink a full glass of water with each meal | No | Fluids with meals accelerate gastric emptying and increase luminal osmolality. Fluids should be separated from solids by about 30 minutes before or after eating. |
| 3. Lie down for 20 to 30 minutes after each meal | Yes | Recumbency slows transit through the small intestine and counteracts the gravitational pull that worsens rapid emptying; it also helps manage vasomotor symptoms. |
| 4. Choose protein and complex starches over sweets | Yes | Protein and complex carbohydrates are absorbed more slowly and produce a less hyperosmolar chyme than simple sugars, reducing the fluid shift and the late hypoglycemic response. |
| 5. Choose a high-carbohydrate, low-fat diet for energy | No | A high simple-carbohydrate load worsens dumping by drawing fluid into the bowel and provoking reactive hypoglycemia. Moderate fat is acceptable and slows emptying. |

Pathophysiology link for the examinee

After total gastrectomy, food passes directly from the esophagus into a reconstructed conduit and then rapidly into the jejunum. Early dumping results from the sudden arrival of hyperosmolar chyme, which pulls extracellular fluid into the intestinal lumen, causing hypovolemia, abdominal cramping, and vasomotor symptoms. Late dumping is a reactive hypoglycemia: the rapid carbohydrate absorption triggers an exaggerated insulin release, dropping blood glucose 1 to 3 hours after the meal. The dietary instructions target both phases by slowing delivery and blunting the glycemic surge.

Key point! Fluid restriction with meals is just as important as food selection. A patient who eats six small meals but drinks a full glass of water with each one will still dump because the liquid accelerates emptying and increases osmolality.

Watch out! Lying down after meals is specific to dumping prevention. For patients with reflux or delayed gastric emptying, recumbency after eating would be contraindicated—but this patient has no gastric remnant and no reflux concern, so the positional instruction is appropriate.

Evidence and clinical context

The randomized crossover study by Kubota et al. [2] evaluated a low-glycemic-index nutritional formula in post-gastrectomy patients and found that modifying the glycemic quality of intake can reduce postprandial hypoglycemia and late dumping symptoms. This supports the principle of choosing complex carbohydrates and protein over simple sugars. The British Society of Gastroenterology guidance [4] addresses chronic post-cancer-treatment GI symptoms and reinforces that dietary manipulation—including meal patterning and macronutrient selection—is a cornerstone of managing post-gastrectomy symptoms. While the bariatric study by Tase et al. [1] focuses on prevalence and risk factors rather than dietary instruction, it confirms that dumping syndrome is a clinically significant postoperative complication requiring structured preventive education. The review by Park et al. [3] notes that postoperative care after gastric cancer surgery has shifted toward individualized recovery, which includes nutritional counseling to preserve quality of life.

For the nursing licensure examination, the dumping diet is a high-yield intervention cluster. The mnemonic structure is: small frequent meals, protein and complex carbohydrate emphasis, no fluids with meals, and postprandial recumbency. A high-carbohydrate, low-fat diet is the opposite of what is recommended because it maximizes the osmotic and glycemic disturbances that define dumping syndrome.References (research sources)

- [1]Factors Predisposing to Development of Dumping Syndrome in Post Operative Bariatric Patients: Experience from a Tertiary Unit.Research articleTase A, Askari A, Abed M, Mussendeki D, Al-Taan O, Munasinghe A, Rashid F, Adil T, Jambulingam P, Whitelaw D. (2026) · DOI: 10.1007/s11695-026-08657-7

- [2]Effectiveness of a low-glycaemic-index formula on post-gastrectomy hypoglycaemia in patients with gastric cancer: randomized crossover study.RCT/clinical trialKubota T, Ohashi T, Nishibeppu K, Takabatake K, Inoue H, Nakabayashi Y (2025) · DOI: 10.1093/bjsopen/zraf001

- [3]Current Trends in Gastric Cancer Surgery and Postoperative Care.Research articlePark SH, Cho A, Kim DJ. (2025) · DOI: 10.7704/kjhugr.2025.0063

- [4]British Society of Gastroenterology practice guidance on the management of acute and chronic gastrointestinal symptoms and complications as a result of treatment for cancer.Research articleAndreyev J, Adams R, Bornschein J, Chapman M, Chuter D, Darnborough S, Davies A, Dignan F, Donnellan C, Fernandes D, Flavel R, Giebner G, Gilbert A, Huddy F, Khan MSS, Leonard P, Mehta S, Minton O, Norton C, Payton L, McGuire G, Pritchard DM, Taylor C, Vyoral S, Wilson A, Wedlake L. (2025) · DOI: 10.1136/gutjnl-2024-333812

## 임상 시나리오

Post-Gastrectomy Dumping PreventionDiet and positioning strategies for discharge teaching
After total gastrectomy, the loss of the gastric reservoir and pyloric control makes dumping syndrome a primary concern. Teach patients to eat 6 small meals daily to limit the volume delivered to the jejunum at any one time.

Emphasize protein and complex carbohydrates over simple sugars. These nutrients are absorbed more slowly and produce less hyperosmolar chyme, reducing both early fluid shifts and late reactive hypoglycemia.

Instruct the patient to lie down for 20-30 minutes after each meal. Recumbency slows intestinal transit and counteracts gravitational effects that worsen rapid emptying.

CautionFluids must be separated from solids by 30 minutes before or after meals. Drinking with meals accelerates gastric emptying and increases luminal osmolality, worsening dumping symptoms.

## 핵심 개념

- **Dumping syndrome** — Rapid emptying of hyperosmolar gastric contents into the small intestine causing fluid shifts, vasomotor symptoms, and reactive hypoglycemia.
- **Early dumping** — Symptoms occurring 15-30 minutes after eating due to rapid fluid shifts from intravascular space into the intestinal lumen.
- **Late dumping** — Reactive hypoglycemia occurring 1-3 hours after eating due to exaggerated insulin response to rapid carbohydrate absorption.
- **Complex carbohydrates** — Starches that are absorbed more slowly than simple sugars, producing less hyperosmolar chyme and reducing dumping risk.
- **Postprandial recumbency** — Lying down after meals to slow intestinal transit and reduce gravitational effects on rapid gastric emptying.

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