傾食症候群(dumping syndrome, DS)主要的成因為經歷過各式胃部切除、減重手術後，因胃排空加速，導致未消化完整的高滲透性食糜過快進入小腸，進而引發腹痛、腹脹、噁心等症狀。對於胃部術後病人，發生率約20-50%。治療包括飲食調整以少量多餐、避免高糖、攝取高纖維及高蛋白質飲食為主，如若症狀持續可以考慮以藥物緩解症狀。個案為75歲男性，病史為消化性潰瘍穿孔及貧血，因腹痛腹脹急診入院，經病史詢問及檢查後診斷為DS引起的腹痛。病人19歲時因消化性潰瘍穿孔接受胃部次全切除術及Roux-en-Y吻合術，術後長期貧血及體重過低，BMI為16.6，屬高風險營養不良。住院期間採症狀藥物控制、鼻胃管減壓、靜脈營養支持，並由營養師設計每日1,600大卡及58克蛋白質的飲食計劃。經飲食漸進調整，病人逐步恢復進食能力，改善腸脹氣與不適，出院前每日可進食200-250克稀飯或軟質食物，搭配營養補充品。病人症狀穩定後出院，並持續遵守飲食原則以減少復發風險。

Dumping Syndrome (DS) is a condition that occurs after gastric or bariatric surgery, where accelerated gastric emptying causes undigested hyperosmolar chyme to rapidly enter the small intestine, leading to symptoms such as abdominal pain, bloating, nausea and vomiting. Its prevalence in patients undergoing gastric surgery can be as high as 20-50%. Treatments include dietary modification with small, frequent meals, avoidance of high-sugar foods, and adherence to high-fiber and high-protein diets; if symptoms persist after dietary modification, symptomatic medication may be considered. The case involves a 75-year-old male with past medical history of perforated peptic ulcer and anemia, admitted to the emergency department due to abdominal pain and bloating. He was diagnosed with DS-related abdominal pain based on history and clinical evaluation. At age 19, the patient underwent subtotal gastrectomy with Roux-en-Y anastomosis due to perforated peptic ulcer, resulting in chronic anemia and underweight with a BMI of 16.6, indicating a high malnutrition risk. During hospitalization, he was treated with symptomatic medication, nasogastric decompression, intravenous nutritional support, and a dietitian-designed meal plan providing 1,600 calories and 58 grams of protein daily. Through gradual dietary adjustments, the patient regained eating ability and experienced improvement of intestinal symptoms. Prior to discharge, he could consume 200-250 grams of porridge daily, supplemented with nutritional drinks. The patient was discharged in stable condition and continued to maintain dietary modifications to prevent recurrence.