胃大部切除术后低血糖综合征在临床上并不多见,国内报道的发病率为0.62～0.74％。一般症状并不严重,临床表现主要为食后2～4小时有饥饿感,全身乏力、上腹闷胀不适,若进食少许,症状迅即消失,有的病人随带饼干以解除症状。严重时可出现全身软弱、眩晕、心悸、多汗、焦虑、震颤、恶心、神经质等症状,常于摄取高碳水化合物饮食、运动、或情绪激动而诱发或加重。其发病机制尚有争论。有症状的病例,口服葡萄糖耐量试验(口服葡萄糖100克),可在1～2小时内血糖升高(至200mg/100ml以上);继之出现低血糖,患者即感觉上述症状。血糖甚至低至50ml/100ml以下,此时测定血胰岛素浓度,发现其浓度比正常对照组高3～4倍。有人认为胃大部切除术后 Subtotal gastrectomy hypoglycemia syndrome is rare in clinical practice, the incidence of the domestic reported 0.62 ~ 0.74%. General symptoms are not serious, the main clinical manifestations of hunger 2 to 4 hours after eating, malaise, abdominal distention discomfort, if you eat a little, the symptoms disappear, and some patients with cookies to relieve the symptoms. Severe symptoms such as general weakness, dizziness, palpitations, hyperhidrosis, anxiety, tremor, nausea, nervousness and the like may occur frequently, often induced or aggravated by eating a high-carbohydrate diet, exercise, or agitation. Its pathogenesis is still controversial. Symptomatic cases, oral glucose tolerance test (oral glucose 100 grams), within 1 to 2 hours elevated blood sugar (to 200mg / 100ml above); followed by hypoglycemia, the patient that the above symptoms. Blood sugar even as low as 50ml / 100ml below the determination of blood insulin concentration, found that the concentration of 3 to 4 times higher than the normal control group. Some people think that after subtotal gastrectomy