摘要
为探讨移居高海拔地区一年以上人心脏改变及返平原后的转归，应用ＥＣＧ、Ｘ线、ＵＣＧ对８１名青年作了动态观察，高原ＥＣＧ提示：ＨＲ明显增快，ＳＴ－Ｔ普遍呈缺血性改变，部分伴传导障碍：ＲＶＨ占６４．２％，双室肥厚２１％，ＬＶＨ仅一例，ＵＣＧ见右室内径增大和流出道增宽。Ｘ线下右心及双侧心影增大。返平原９天，ＨＲ迅速减慢，窦性心动过缓增多．其余指标均有好转。３０天时，ＥＣＧ的ＲＶＨ已基本消失，ＵＣＧ指标９３％恢复正常。Ｘ线下心影大部好转。２８５天时均转为正常。说明：高原心脏改变随海拔的升高而加剧；ＲＶＨ和室腔的增大并存；左心受累并非罕见。随返平原时间的延长，心脏改变可逐渐恢复。
n orcler to explore the changes of hearts in the subjects immigating to high altitude for overone year and then returning to lowland.38young subjects underwent self-comparative ECG andX-ray exam at 5 600m altitude and 1 410m lowland respectively,43 young subjects underwentself-comparative UCG exam at 5 400m altitude and 1 410mlowland respectively,The ECT showedincreased HR,ischemic ST-T changes and conduction disturbances. The right ventricular hyper-trophy(RVH)and biventricular hypertrophy appeared in 64.2%and 21%in the subjects respec-tively.Only one case appesred left ventricular hypertrophy.The X-ray showed heart silhouette en-largement in right or both sides The UCG showed increased internal diameter of right ventricleand right ventricular outfIow tract,9 days after the subjccts returned to lowland,HR sloweddown sinus bradycardia increased.After 30 days,the RVH on ECGs disappeared,and the changeson UCGs and X-rays returned to normal in most of The subjects.After 286 days,almost all thesubjects recovered.The electrophysiologic and mophologic changes of heart Were aggravated withthe altitude rising, These canges recovered gradually after returning to lowland。
出处
《高原医学杂志》
CAS
1996年第2期9-11,共3页
Journal of High Altitude Medicine
