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1920年Dodds发现餐后呼气中二氧化碳(CO_2)分压升高,某些胃肠病患者餐后呼出的CO_2量与正常人不同,当即预言呼吸分析可望作为消化系统疾病的一种诊断方法。近十几年来呼吸试验有很大发展,由于它是一种无创伤性检查,设备较简单,费用低,且可反复试验,其结果一般不受心肺功能的影响,因此引起胃肠病学家广泛的兴趣。呼吸试验的原理呼吸试验分~(14)C或~(13)C标记物呼吸试验与氢气呼吸试验两大类,它们的原理亦不相同。口服或静脉注射~(14)C或~(13)C标记物后,在
In 1920, Dodds found that partial pressure of carbon dioxide (CO 2) in postprandial breath increased, and some patients with gastrointestinal diseases had different levels of post-prandial CO 2 as compared with normal subjects. Immediate prediction of respiratory analysis is expected as a diagnostic method for digestive diseases . Breath test has greatly developed over the past decade. Because it is a noninvasive test, the equipment is simple, low cost, and can be repeatedly tested. The result is generally not affected by cardiopulmonary function, thus causing the gastroenterologist Wide interest. Breath test principle Breath test score ~ (14) C or ~ (13) C marker breathing test and hydrogen breathing test two categories, their principles are not the same. After oral or intravenous injection of ~ (14) C or ~ (13) C markers,