Effects of isoflurane-nitrous oxide on hemodynamic in patients with different cardiac function undergoing open heart surgery
- VernacularTitle:异氟醚和氧化亚氮吸入麻醉对不同心功能心脏瓣膜手术病人血液动力学的影响
- Author:
Jianbin XIAO
;
Weixian ZHAO
;
Guangjun XIAO
- Publication Type:Journal Article
- Keywords:
Isoflurane Nitrous oxide Heart surgery Hemodynamics
- From:
Chinese Journal of Anesthesiology
1996;0(07):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To evaluate the effects of isoflurane-nitrous oxide on hemodynamics in patients undergoing cardiac valve replacement. Method:Hemodynamics values were measured with Swan-Ganz technique. Thirty-nine patients were divided into two groups according to their cardiac function before surgery. The patients with cardiac function Ⅱ degree were belong to group Ⅰ and those with cardiac function Ⅲ-Ⅳ degree to group Ⅱ. Result:CI,LVWI, RVWI,HR and MAP decreased significantly in both groups after induction of anesthesia without change in SI. During tracheal intubation and sternotomy,CI and LVWI decreased,PTRI and SVRI increased,particularly in group Ⅱ. During aorta and vena cava intubation the changes of hemodynamics were relatively complicated with CI and SI improved in group Ⅱ and further decreased in group Ⅰ. After CPB,MPAP,PAWP,PTRI and SVRI were decreasad in different degree in both groups with significant increased in CI and SI in group Ⅱ. Conclusion:Induction and maintenance anes thesia with 1.0%-1.5% isoflurane and 40%-50% N_2O are suitable in patients with impaired cardiac function.
