肠消化和吸收不良依据典型临床表现,多不难诊断,但若确诊,尚需配合以下实验室检查指标。 1.粪便常规检查和粪脂定性、定量检查:大便查中性脂肪、分解的脂肪和未消化的肌纤维。麸质敏感性肠病时,中性脂肪正常或稍高,脂肪酸明显增高,但肌纤维无增加。胰功能不全时,中性脂肪显著增加,脂肪酸中度增加,未消化肉类纤维增加。粪脂定性、定量检查已在临床普遍应用,可用肉眼或显微镜对粪便观察。脂肪性大便的特点是质软、不成形、谈棕色至黄色,外表有油光。传统的粪脂定量测定方法以kamer法最常用。正常人24小时排出2～5g(每天摄入量为60～100g脂肪),如超过6g,表示消化吸收功能有明显异常。本试验比较敏感,但无定位价值。另外,通过测定~(131)I甘油三酯与~(131)I油酸的排出率,可以了解肠道消化与吸收 Intestinal digestion and malabsorption based on typical clinical manifestations, more difficult to diagnose, but if confirmed, still need to meet the following laboratory tests. 1. Stool routine examination and qualitative, quantitative examination of stool: stool to check the neutral fat, decomposed fat and undigested muscle fiber. Gluten-sensitive enteropathy, normal or slightly higher neutral fat, fatty acids increased significantly, but no increase in muscle fibers. Pancreatic insufficiency, the neutral fat increased significantly, moderate increase in fatty acids, undigested meat fiber increased. Stool fat qualitative, quantitative examination has been widely used in clinical practice, can be observed with the naked eye or microscope stool. Fat stool is characterized by soft, non-forming, talk about brown to yellow, shiny appearance. The traditional method of quantitative determination of talc kamer method is the most commonly used. Normal 24 hours 2 ~ 5g (daily intake of 60 ~ 100g fat), such as more than 6g, indicating significant abnormalities in digestion and absorption. This test is more sensitive, but no positioning value. In addition, through the determination of ~ (131) I triglyceride and ~ (131) I oleic acid excretion rate, we can understand intestinal digestion and absorption