心脏收缩时间间期对经皮冠状动脉腔内成形术后晕厥心肌估价的探讨  

Systolic time intervals in evaluation of myocardium stunning after percutaneous transluminal coronary angioplasty

作　　者：张秀英[1] 陈士良[1] 李兰荪[1] 贾国良[1] 

机构地区：[1]第四军医大学西京医院心内科

出　　处：《心功能杂志》1995年第1期17-18,21,共3页

摘　　要：动态观察１４例经皮冠状动脉腔内成形术（ＰＴＣＡ）病人手术前后心脏收缩时间间期（ＳＴＩ）变化，估价ＳＴＩ改变时判断晕厥心肌的价值。结果显示：ＰＴＣＡ后３～５ｄ，ＳＴＩ评价左心功能较为敏感的指标射血前时间／左室射血时间（ＰＥＰ／ＬＶＥＴ）比值，由０．３８６±０．６００增加至０．４６０±０．０７０；至７～８ｄ恢复至术前水平。与同期测定的超声心动图左室射血分数（ＬＶＥＦ）相比，变化趋势一致。提示ＰＴＣＡ后，系列测定ＳＴＩ，可动态反映左心功能变化。ＰＥＰ／ＬＶＥＴ比值改变可作为判断晕厥心肌恢复的指标之一。In order to evaluate the effects of the changes in systolic time intervals(STI)on the judgement of myocardium stunning,the authors compared variations in STI of 14 patients who had received percutaneous transluminal coronary angioplasty(PTCA).The results showed that 3～5d after the PTCA,the ratio of preejection period to the left ventricular ejection time(PEP/LVET)rose from 0.386±0.070 to 0.460±0.070;7～8 d after the PTCA,the PEP/LVET ratio(This ratio is a sensitive index of STI in evaluating the left cardiac function)became normal.The above results agree with the ejection fraction obtained by means of ultrasound cardiography suggesting that STI measured in series can show the changes in left cardiac function and that changes in the PEP/LVET ratio may serve as one of the indexes for judgement of myocardium stunning.

关 键 词：心脏 收缩时间间期 晕厥心肌 PTCA 

分 类 号：R654.3[医药卫生—外科学] R542.2[医药卫生—临床医学]