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目的:了解不同年龄段住院患者餐后低血压(PPH)的发病情况及临床特点,探讨PPH的危险因素.方法:随机抽取2015年1-6月在我院住院的430例患者,利用24 h动态血压监测仪检测患者3餐前后的血压.结果:住院患者PPH患病率为52.09％.早、中、晚餐PPH的患病率分别为38.14％、19.10％、12.56％,PPH最常发生于早餐后(P＜0.05).＜50岁、50～59岁、60～69岁、70～79岁、≥80岁患者PPH的患病率分别为33.30％、37.00％、57.50％、69.40％、71.40％,年龄越大,PPH患病率越高(P＜0.05),但Logistic回归分析提示,年龄不是PPH的危险因素,高血压、吸烟与PPH呈正相关性.结论:PPH在住院患者中很常见,不仅好发于老年人,成年人也可发生.早餐后PPH最常见.吸烟、高血压是PPH的危险因素.“,”Objective:To investigate the incidence and clinical characteristics of postprandial hypotension (PPH) in hospitalized patients in different age groups,and to explore the risk factors of postprandial hypotension.Method:A total of 430 patients were enrolled in our hospital from January to June in 2015.The blood pressure was measured before and after three meals using 24 h ambulatory blood pressure monitor.Result:The prevalence rate of PPH in hospitalized patients was 52.09％ overall.The prevalence rates of PPH after breakfast (38.14％)was significant higher than after lunch (19.10％) and supper (12.56％) (P＜0.05).The prevalence rates were different in different age groups,and the older the age,the higher the prevalence of PPH (P＜0.05),but the binary Logistic regression analysis showed that age was not risk factor of PPH,while hypertension and smoking were positively related to PPH.Conclusion:PPH is common in hospitalized patients,not only in aged,but also in adults.Smoking and hypertension are the risk factors of PPH,most of which happened after breakfast.