苏州市小学生肥胖现状及其对心肺功能影响

Pevalence of obesity and its effect on cardiopulmonary function among primary school students in Suzhou urban area

目的了解江苏省苏州市小学生肥胖流行现况,探讨单纯性肥胖对小学生心肺功能的影响,为预防控制单纯性肥胖提供科学依据。方法采用随机整群抽样法,对苏州市6所小学1-6年级小学生6 299人进行调查,并分别对单纯性肥胖的男、女学生各30例进行肺通气功能和心电图检测。结果苏州市肥胖男、女小学生分别有291和189例,检出率分别为8.7%和6.4%,平均检出率为7.6%;男、女生体重超重分别有391和264例,检出率分别为11.6%和8.9%,平均检出率为10.4%;与正常学生比较,肥胖学生的每分最大通气量（MVV）、用力呼吸第1秒钟呼气量（FEV1）、肺活量50%时呼气流速（50%MEF）、呼气高峰流速（PEFR）明显降低,功能残气量（FRC）明显升高;肥胖学生心电图的QT离散度（QTd）和校正后QT离散度（QTcd）分别为（42.11±10.57）和（50.29±11.69）m s,与正常学生的（36.77±9.63）和（42.43±10.77）m s比较,均明显延长（P〈0.05,P〈0.01）。结论单纯性肥胖可导致小学生肺通气功能下降,心肌细胞电生理活动异常。

Objective To investigate the prevalence of obesity and its effect on cardiopulmonary fuction among the primary school students in Suzhou city for prevention and control of simple obesity.Methods Totally 6 299 students from 6 primary schools were investigated and 60 students with simple obesity（30 males,30 females） were tested for pulmonary ventilation function and electrocardiogram.Results The total obesity rate of the students was 7.6%（8.7% in male,6.4% in female）.The total overweight rate was 10.4%（11.6% in male,8.9% in female）.Compared with the students with normal body weight,the obesity students had obviously lower maximum voluntory ventilation（MVV）,forced expiratory volume in 1 second（FEV1）,maximal expiratory flow at 50%（MEF50）,and peak expiratory flow rate（PEFR） and higher functional residual capasity（FRC）.The QT despersion（QTd） and QT despersion corrected of the obesity students were significantly longer than those of the students with normal body weight（42.11±10.57 vs 36.77±9.63,P0.05;50.29±11.69 vs 42.43±10.11,P0.01）.Conclusion Simple obesity induces the decrease of pulmonary ventilation function and abnormal electrocardiogram in primary school students.