高原地区11—14岁正常藏族小学生异常心电图检出情况分析

本文对402例世居于海拔4500米地区的正常藏族小学生心电图进行了分析。结果心电图完全正常者仅占受检者的14．93％，单纯经度异常心电图检出率为44．28％，多为窦性心律不齐和心电轴的轻度右偏，其临床意义不大。各类异常心电图检出度高达受检者的40.79％，其中常见的心电图改变依次为窦性心动过缓（16．92％）、异常心电轴右偏（13．93％）、典型不完全性右束支传导阻滞（7.46％）以及窦性心动过速（5．72％）等，因此认为高原低氧环境对心电图有明显的影响。

A study of ECG for healthy Tibetan pupils at 4,500m high altitude region

Four hundred and two ECG analyses for healthy Tibetan pupils were completed. All subjects are native Tibetans living at 4, 500m high altitude regions. Complete normal ECG were 14. 93% of ECG of total subjects.Most abnormal are 44. 28%, light abnormal are majority of them. They were sinus arrhythmin and light axis right deviation, so they are not significant clinically. A variety of abnormal ECG is frequent being 40. 79% of total subjects. Their were sinus brady cardia(16. 92%),abnormal axis right deviation (13.93%), typical incomplete right bundle branch block (7.46%) and sinus tachycardia (5. 72%) etc. It is suggested that altitude hypoxia effects significantly on the changes of ECG.