高原地区心功能研究Ⅲ—久居高原健康老年人重返平原后心脏收缩间期的观察  

A STUDY OF CARDIAC FUNCTION AT HIGH ALTITUDE Ⅲ—CHANGES OF CARDIAC SYSTOLIC TIME INTERVALS OF HIGH ALTITUDE IMMIGRANTS PERMANENTLY WHEN THEY DESCENT TO SEA LEVEL

作　　者：王晓真[1] 吴天一[1] 陈秋红[1] 李万寿[1] 缪澄宇 张丽珠[1] 张旭辉[1] 张世杰 宋长平 

机构地区：[1]青海省高原医学科学研究所 [2]青海省职业病防治院

出　　处：《高原医学杂志》1992年第4期1-5,共5页Journal of High Altitude Medicine

摘　　要：本文描记了久居高原海拔(2 60～3000m)健康老年前期和老年人返平原后■动图,并与高原及海平组同令人作对比。结果显示:返平原各年龄组中PEP.IVET.P■P/LVET与平原组无差异。返平原的男性PEPI缩短、LVETI延长,这与高原地区的PEPI延长、LVETI缩短适其相反。返平原男女两组PEP/LVET比值短于西宁组,而与平原组接近。揭示高原久居老年人脱离低氧环境后,心脏收缩间期(STI)逐渐恢复到平原的生理稳态。Cardiac systolic time intervals(STI)was measured by carotid arteriogram in the health prese nile(45～59 years) and senile(60～69 and ≥70 years). The experimental subjects include three groups:(1) High altitude group(HAG): 100 subjects had lived at 2260～3000m over 10 years.(2)High altitude immigrants descent to sea level group(DG): 156 persons who original residence at high altitude then to sea level and have lived for 4.58 years of the average.(3)Sea level group(SLG), 140 subjects were sea level native residents. And a comparison research was made in three groups. The results showed that:(1)In each group of age preejection period(PEP), left ventricular ejection time(LVET)and the PEP/LVET ratio was no singnificant defference between DG and SLG.(2) In DG,PEPI was shorter and LVETI was longer than HAG(P<0.001),STI was similar between DG and SLG.(3) In the women of DG,PEPI was longer and LVETI was shorter than SLG,but PEP/LVET were no singnif-icant defference between these two groups. The results suggested that the high altitude immigrants who descent to sea level, because them removed hypoxic environmental stimuli so their cardiac STI have gradully recoved to a steady of sea level.

关 键 词：心功能 STI 返平原 

分 类 号：R8[医药卫生—临床医学]