Changes in early left ventricular myocardial diastolic function after cardiopulmonary bypass in patients undergoing mitral valve replacement
10.3760/cma.j.issn.0254-1416.2014.07.014
- VernacularTitle:二尖瓣置换术患者体外循环后早期左心室心肌舒张功能的变化
- Author:
Jie DING
;
Hongwei SHI
;
Xiaoju HU
;
Yamei ZHAO
;
Juanjuan MIAO
;
Yali GE
;
Haiyan WEI
- Publication Type:Journal Article
- Keywords:
Ventricular function,left;
Diastolic function;
Mitral valve replacement;
Cardiopulmonary bypass
- From:
Chinese Journal of Anesthesiology
2014;34(7):826-829
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the changes in early left ventricular myocardial diastolic function after cardiopulmonary bypass (CPB) in the patients undergoing mitral valve replacement.Methods Twenty patients of both sexes,aged 40-70 yr,of ASA physical status Ⅱ or Ⅲ (NYHA Ⅱ or Ⅲ),with left ventricular ejection fraction (LVEF) ≥ 45 ％,scheduled for elective mitral valve replacement with CPB,were enrolled in the study.Global and regional left ventricular diastolic function was measured by using TEE.After splitting of sternum and at 30 and 90 min after termination of CPB,HR,mean arterial pressure,central venous pressure,cardiac index,LVEF,early diastolic transmitral velocity (E),early diastolic tissue velocity (Ea),right ventricular early myocardial velocity (Em) and right ventricular late myocardial velocity (Am).E/Ea and Em/Am ratios were calculated.Results There was no significant difference in the parameters of hemodynamics and left ventricular diastolic function at each time point before and after CPB.LVEF was greater than 50％ and E/Ea ratio was greater than 20 at each time point in the patients.Conclusion There is no further damage to the early left ventricular myocardial diastolic function after CPB in the patients undergoing mitral valve replacement.
