摘要
Abstract
Objective To investigate the risk factors for low cardiac output syndrome ( LCOS) after heart valve replacement in elderly patients .Methods Of 150 elderly patients who underwent heart valve replacement ,39 patients with postoperative LCOS were in the observation group ,111 patients without postoperative LCOS were in the control group .A clinical data of the patients were analyzed by univariate analysis to determine the influence factors for LCOS , and then the risk factors for LCOS were determined by logistic regression analysis .Results Univariate analysis showed that body mass index ,renal insufficiency ,cardiothoracic ratio ,pulmonary arterial pressure (PAP),cardiopulmonary bypass time,aortic clamping time,blood loss ratio,postoperative arrhythmias,ventilation time and intensive care unit stay were the influence factors for postoperative LCOS ( all P<0.05 ) .Unconditional logistic regression analysis showed that patient′s body mass index<19 kg/m2 ,cardiopulmonary bypass time >100 min,blood loss ratio>20%,aortic clamping time>60 minutes were the risk factors for postoperative LCOS .Conclusion Patient′s body mass index<19 kg/m2 , cardiopulmonary bypass time >100 min,blood loss ratio>20%,aortic clamping time>60 min are the risk factors for LCOS in elderly patients undergoing heart valve replacement .关键词
心脏瓣膜疾病/心脏瓣膜置换术/老年/低心排综合征/危险因素Key words
Heart valve disease/Heart valve replacement/Elderly/Low cardiac output syndrome/Risk factor分类
医药卫生
