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目的了解长沙市中学生不明原因晕厥(UPS)的发病情况,研究其相关危险因素。方法对长沙市3所全日制中学随机发放问卷2315份,收集11～18岁中学生的有效问卷2113份,问卷回收率89.12%。结果2113例中学生中发生过一次以上不明原因晕厥者610例(28.9%);年龄11～18岁(平均14.11±2.03岁);以女生居多,性别差异有统计学意义(P<0.05);晕厥诱因主要为持久站立(56.2%)、其次是闷热环境(27.7%)与运动(17.0%),晕厥先兆以头晕为主(66.9%)、其次是眩晕(40.5%)与视物模糊(36.1%)。结论长沙市中学生UPS发病率为28.9%,女生高于男生。晕厥诱因与晕厥先兆中部分因素存在性别差异。
Objective To understand the incidence of unexplained syncope (UPS) among middle school students in Changsha and to study the related risk factors. Methods A total of 2315 questionnaires were sent to 3 full-time secondary schools in Changsha City, 2113 valid questionnaires were collected from 11 to 18 years old middle school students, and the questionnaire recovery rate was 89.12%. Results Among 2113 middle school students, 610 cases (28.9%) had unexplained syncope. The age ranged from 11 to 18 years old (average 14.11 ± 2.03 years). The majority of female students had gender differences (P <0.05) The predisposing factors were mainly permanent (56.2%), followed by sultry (27.7%) and exercise (17.0%), dizziness (66.9%), followed by vertigo (40.5%) and blurred vision (36.1% ). Conclusion The incidence of UPS in middle school students in Changsha is 28.9%, and the female students are higher than those of boys. Sexual differences in some factors of syncope induced and syncope precursors.