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尿及/或血浆D木糖耐量试验简单易行,正确性高,已广泛用于诊断小肠吸收不良。作者曾证实5小时木糖呼气试验与尿及/或血浆木糖试验同样有用。本文比较了3小时与5小时D-木糖呼吸试验在诊断小肠吸收不良中的作用是否相似。 病例及方法:33例肯定诊断为吸收不良的病人,禁食一夜后清晨口服25克D木糖,服前及服后每30分钟各取呼气末样本,持续5小时,以气相色谱仪测定呼气样本中H_2的浓度,记录超过基线浓度的最大增长量(δ峰),计算曲线下面积(AUC),并与27名健康人、44例结肠易
Urine and / or plasma D xylose tolerance test is simple, accurate and has been widely used to diagnose poor absorption of the small intestine. The authors have demonstrated that a 5-hour xylose breath test is as useful as a urine and / or plasma xylose test. This article compares the effects of the 3-hour and 5-hour D-xylose breath tests on the diagnosis of small bowel malabsorption. Cases and methods: 33 cases of definitely diagnosed as malabsorption in patients with fasting overnight oral 25 grams of D-xylose, before and after serving each take 30 minutes of end-expiratory samples for 5 hours to determine by gas chromatography The concentration of H 2 in breath samples was recorded as the maximum increase over the baseline concentration (δ peak), and the area under the curve (AUC) was calculated and compared with 27 healthy subjects and 44 colon