胆囊切除后乳糖吸收功能及小肠传递时间的观察

Observations on Lactose Absorption and Small Intestinal Transmit Time in Patients after Cholecystectomy

采用国产ＨＴＢ－Ⅰ型氢气微分析仪，以２５ｇ乳糖为基质，对３２例胆囊切除后患者作氢气呼吸试验，测定其乳糖吸收功能及小肠传递时间。结果乳糖吸收不良占７８．１２％、乳糖不耐受３７．５％、小肠传递过速者３１．２５％。提示胆囊切除后患者乳糖吸收不良及不耐受的发生率与健康人群相似，说明不存在继发性乳糖酶缺乏。但小肠传递时间过速的发生率较高，可能是胆囊切除后形成ＰＣＳ的因素之一。

By a microhydrogenanalyzer 32 patients after cholecystectomy were given 25 g lactose to make hydrogen breath test. And the function of lacktose absorption and intestinal transmit time were measured. The results showed that the incidence of malabsorption and intolerance of lactose in patients after cholecystectomy were comparable to those of general population. It seemed there was no secondary lactose deficiency after cholecystectomy. There was an increase in small intestinal motility which might be one important factor contributing to the formation of postcholecystectomy syndrome.