核素心室造影对二尖瓣替换术前后左心室舒张功能的评价

目的　对二尖瓣替换术前后左心室舒张功能的研究。方法　应用核素心室造影测定 3 5例二尖瓣替换术患者术前后左心室舒缩功能。结果　术前 2 8例左心室舒张功能有损害 ;左室射血分数与峰充盈率、峰充盈时间、1/ 3充盈率有显著相关性 ;术后 2周左室舒张功能较术前无显著性改善 (P >0 0 5 )。结论　二尖瓣病变患者左心室舒张功能多有损害 ,且可出现于收缩功能异常之前 ;左心室舒张与收缩功能密切相关 ;二尖瓣替换术后 2周左心室舒张功能尚未完全恢复

Assessment of pre-and postoperative left ventricular diastolic function by radionuclide angiocardiography inmitral valve replacement patients

Objective To study pre and pos toperative left ventricular diastolic function in patients with mitral valve replacement. Methods The pre and postoperative left ventricular diastolic function were determined by radionuclide angiocardiography in 35 patients with mitral valve replacement.Results Preoperative left ventricular diastolic function was impaired in 28 patients. There was a significant correlation between left ventricular ejection fraction and peak filling rate,time to peak filling rate,one third of filling rate,left ventricular diastolic function was no significant improvement in postoperative 2 weeks than preoperation( P >0 05).Conclusions Left ventricular diastolic function is impaired and may precede systolic function compromised in many patients with mitral valve disease. There is a close relationship between left ventri cular diastolic and systolic function; left ventricular diastolic function is not still recovered entirely in postoperative 2 weeks.