氢气呼吸试验(Hydrogen Breath Test,HBT)系近年发展起来的用于胃肠道疾病诊断的一项新技术,由于它为一种非侵入性检查,临床使用安全,而且具有灵敏性与特异性较高的优点,因此颇受医生与患者的欢迎。自1985年3月以来,我们采用 HBT 进行了337人次有关乳糖吸收不良症的调查。兹简介试验方法、注意事项及初步体会如下.一、原理适量的糖类物质被摄入后,一般在小肠内被吸收,但多糖与双糖(如蔗糖、乳糖和麦芽糖等)则必须在肠 Hydrogen Breath Test (HBT) is a new technology developed in recent years for the diagnosis of gastrointestinal diseases. Because it is a noninvasive test, it is safe in clinical use and more sensitive and specific High advantage, so popular with doctors and patients welcome. Since March 1985, we conducted 337 surveys of lactose malabsorption using HBT. The introduction of test methods, precautions and the initial experience is as follows: First, the principle of proper amount of carbohydrates are generally absorbed in the small intestine, but polysaccharides and disaccharides (such as sucrose, lactose and maltose, etc.) must be in the intestine