二尖瓣环运动速度评价择期经皮冠状动脉介入治疗对急性心肌梗死患者心功能的近期疗效

目的探讨应用组织多普勒成像技术检测二尖瓣环运动速度,评价择期经皮冠状动脉介入治疗对急性心肌梗死患者左室收缩和舒张功能的近期疗效。方法 2010年1月-2012年12月收治的行择期经皮冠状动脉介入治疗急性心肌梗死患者45例为观察组,并设健康对照组40例,2组均进行超声心动图检查,应用组织多普勒成像技术检测二尖瓣环运动速度,比较2组及观察组术前、术后3~7 d、术后1个月反映左室收缩与舒张功能的各项指标。结果观察组收缩期S峰(Sa)、舒张期E峰(Ea)均低于健康对照组,二尖瓣血流频谱舒张早期速度(E)与Ea的比值(E/Ea)高于健康对照组,差异均有统计学意义(P<0.05);2组患者左室舒张末期内径(LVEDD)、左室收缩末期内径(LVESD)、左室射血分数(LVEF)、E和舒张晚期速度(A)的比值(E/A)、二尖瓣E峰减速时间(DT)比较无显著性差异(P>0.05);术后3~7 d各项指标较术前有改善趋势,但差异无统计学意义(P>0.05);术后1个月Sa较术前显著增加,而E/Ea较术前、术后3~7 d显著降低(P均<0.05)。结论应用组织多普勒成像技术检测二尖瓣环运动速度,可有效评价左室收缩与舒张功能,判定术后疗效。

Evaluation of mitral annulus velocity elective percutaneous coronary intervention in patients with acute myocardial infarction short-term efficacy of cardiac function

Objective To investigate the short term effect of elective percutaneous coronary intervention in treatment of acute myocardial infarction in patients with left ventricular systolic and diastolic function by tissue Doppler imaging to detect mitral annulus velocity evaluation. Methods From January 2010 to December 2012, patients admitted for elective percuta- neous coronary intervention for acute myocardial infarction were enrolled, 45 patients in the observation group and set the healthy control group of 40 cases, two groups were performed echocardiography with tissue Doppler imaging techniques detect mitral annulus velocity, and the observation group compared two groups of preoperative and postoperative 3 - 7 d, after a month of left ventricular systolic and diastolic function reflects the indicators. Results The peak systolic S （ Sa）, and dias- tolic peak （Ea） of observation group were lower than the control group, the ratio of mitral valve flow spectrum of early diastolic velocity （E） and （Ea） E/Ea was higher than the control group, the difference had statistical significance （ P 〈0.05） . The left ventricular end diastolic diameter （LVEDD） and left ventricular end systolic diameter （LVESD） and left ventricular ejec- tion fraction （LVEF）, and the ratio of E and late diastolic velocity （A） （E/A） and mitral E peak deceleration time （DT） of the two group had no significant difference （ P 〉 0.05）. Compared to pre-operation, various measure were improved after 3 day to 7 day, but there had no statistical significance （ P 〉 0.05 ） ; A month after surgery, Sa was increased significantly compared to pre-operation. Compared to preoperative and 3 day to 7 day after surgery E/Ea was decreased significantly （ P 〈 0.05）. Conclusion Detected by tissue Doppler imaging of mitral annular velocities, which can effectively evaluate left ven- tricular systolic and diastolic function, determining postoperative outcome.