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目的研究老年人糖尿病（ＤＭ）易漏诊的原因，以提高对老年人ＤＭ的正确诊断率。方法口服葡萄糖耐量试验（ＯＧＴＴ），分析不同年龄组不同空腹血糖（ＦＢＧ）水平ＤＭ及糖耐量减低（ＩＧＴ）的检出率。结果ＦＢＧ正常（≤６．１１ｍｍｏｌ／Ｌ），中年组２５５人中ＤＭ３２人（１２．５％），ＤＭ及ＩＧＴ８４人（３２．９％），老年组２９９人中ＤＭ８７人（２９．１％），ＤＭ及ＩＧＴ１７３人（５７．９％），两组间有显著差异（Ｐ＜０．０１）。结论对ＦＢＧ正常的老年人，若有肥胖、高血压病、高脂血症或ＤＭ家族史等高危因素，做ＯＧＴＴ有利于早期检出ＤＭ。
Objective To study the causes of misdiagnosis of diabetes mellitus (DM) in the elderly to improve the correct diagnosis of DM in the elderly. Methods The oral glucose tolerance test (OGTT) was used to analyze the different fasting glucose (FBG) levels and impaired glucose tolerance (IGT) in different age groups. Results FBG was normal (≤6.11mmol / L), DM32 in middle age group (12.5%), DM and IGT84 (32.9%) in 255 middle aged group and DM87 (29.1% ), DM and IGT173 (57.9%), there was a significant difference between the two groups (P <0.01). Conclusion For elderly people with normal FBG, if there are risk factors such as obesity, hypertension, hyperlipidemia or DM family history, doing OGTT is good for early detection of DM.