35岁及以上人群二尖瓣反流现状及其影响因素研究

Prevalence and Risk Factors of Mitral Regurgitation in the Population Aged ≥ 35 Years

目的:了解我国35岁及以上人群二尖瓣反流(MR)的检出情况及其影响因素,为高危人群的预防提供参考。方法:采用分层多阶段抽样的方法抽取35岁及以上的成年人作为调查对象,通过调查问卷及体格检查收集调查人群的一般情况、生活方式、疾病史、身高、体重等信息,并进行彩色多普勒超声心动图检查以及空腹血糖和血脂的测定。结果:纳入分析对象共28 814人,MR总体检出率为18.4%,其中男性和女性MR检出率均为18.4%。中重度MR检出率:35~50岁年龄组为0.3%,51~64岁年龄组为0.9%,≥65岁年龄组为2.2%。随年龄升高,MR检出率有升高的趋势。多因素Logistic回归分析发现年龄、收缩压、城乡、地区、左心房前后径、左心室舒张末期前后径、左心室射血分数、卒中病史、心房颤动病史、心力衰竭病史是MR的影响因素。结论:我国人群MR检出率较高,年龄、收缩压、城乡、地区、左心房前后径、左心室舒张末期前后径、左心室射血分数、卒中病史、心房颤动病史、心力衰竭病史是MR的主要影响因素,针对具有上述危险因素的人群应采取针对性的预防措施。

Objective： To explore the prevalence and risk factors of mitral regurgitation （MR） in the population 〉35 years in China in order to provide prevention reference for high risk crowd. Methods： The residents 〉35 years were taken by a stratified multistage sampling method. General information of crowd was collected by predesigned questionnaire and physical examination including life style, disease history, body weight and height. Echocardiography was conducted, fasting blood glucose and blood lipid levels were measured. Results： A total of 28814 subjects were enrolled. The overall MR detection rate was 18.4%, the detection rate in male and female were both 18.4%. The detection rates of moderate and severe MR were 0.3% in the paticipants at （35-50） years, 0.9% at （51-64） years and 2.2% at ≥65 years. MR prevalence showed an increasing trend with aging. Multivariate Logistic regression analysis indicated that age, systolic blood pressure, urban and rural, district, left atrial front and back diameter, left ventricular end diastolic front and back diameter, left ventricular ejection fraction, stroke, atrial fibrillation and heart failure were the risk factors for MR occurrence. Conclusion： MR detection rate was rather high in China. Specific prevention action should be taken for those with the above risk factors.