摘要
目的探讨心率变异性(HRV)对正常学龄期儿童心电图功能性ST-T改变的临床意义。方法选择50例有功能性ST-T改变的学龄期儿童、43例伴ST-T改变的同年龄心肌炎患儿,及50例无ST-T改变的学龄期健康儿童,三组均进行12导联同步常规心电图及动态心电图检查,并分析其HRV参数。结果功能性ST-T改变儿童的HRV时域指标与健康儿童比较,心率增快,PNN50、rMSSD、SDSD降低,SDNN、SDANN升高,差异有统计学意义(P均<0.05);伴ST-T改变的心肌炎患儿与功能性ST-T改变和对照儿童比较,心率增快,PNN50、rMSSD、SDSD降低,SDNN、SDANN也降低,差异有统计学意义(P均<0.05)。结论学龄期儿童自主神经功能尚不稳定,功能性ST-T改变与迷走神经活性降低,交感神经相对值增高,交感-迷走神经平衡状态失常相关。HRV对于功能性ST-T改变具有重要诊断意义。
Objectives To evaluate the clinical value of heart rate variability （HRV） analysis in school-age healthy chil- dren with functional ST-T changes in electrocardiogram （ECG）. Methods In 143 school-age children （50 cases of functional ST-T changes, 43 cases of myocarditis children with ST-T change, 50 cases of healthy controls without ST-T changes）, HRV time domain value was measured in three groups with 24 dynamic electrocardiogram. Results Compared with healthy controls, PNN50, rMSSD and SDSD were decreased while the heart rat, SDNN and SDANN were increased in children with functional ST-T changes （P all 〈0.05）. Meanwhile, compared with children with functional ST-T changes and healthy controls, the heart rate was increased while PNN50, rMSSD, SDSD, SDNN and SDANN were decreased in the myocarditis children with ST-T change （P〈0.05）. Conclusions The autonomic nervous system of school-age children is not stable. The functional ST-T changes are related with the imbalance between sympathetic and vagus nerve activities. HRV analysis has important diagnostic signifi-cance in the functional ST-T changes.
出处
《临床儿科杂志》
CAS
CSCD
北大核心
2013年第7期615-617,共3页
Journal of Clinical Pediatrics
关键词
功能性ST-T改变
心率变异性
动态心电图
学龄期儿童
functional ST-T changes
heart rate variability
dynamic electrocardiogram
school-age children
