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主动脉瓣置换术后发生低心排出量综合征的预测因素探讨
引用本文:马红,张其霞,李晓静,郑晓燕. 主动脉瓣置换术后发生低心排出量综合征的预测因素探讨[J]. 浙江医学, 2014, 0(13): 1137-1140
作者姓名:马红  张其霞  李晓静  郑晓燕
作者单位:温州医科大学附属第二医院ICU, 325027
摘    要:目的:探讨患者在主动脉瓣置换术后发生低心排出量综合征的预测因素。方法300例瓣膜置换术的患者,其中主动脉狭窄(AS)和主动脉瓣关闭不全(AI)患者各150例,观察和记录所有患者出现低心排出量综合征的情况及相关因素。结果术后有86例患者(28.6%)出现低心排出量综合征,其中AS患者39例(26.0%),AI患者47例(31.3%)。下列因素与低心排出量综合征的发生相关:AS术前因素包括高龄(OR=4.7)、术前肥胖(OR=1.8)、心力衰竭病史(OR=1.7)、收缩末期室间隔厚度(OR=5.5)、舒张末期室间隔厚度(OR=4.2)、左房内径(OR=1.6)、二尖瓣和三尖瓣反流(OR=1.9、1.5);术后早期因素包括LVEF≤50.0%(OR=5.4)、左心室收缩末期直径(OR=1.7)、舒张末期直径(OR=1.9)及二尖瓣反流(OR=4.1)。AI术前因素高龄(OR=1.9)、术前肥胖(OR=4.8)、心力衰竭病史(OR=1.7)、LVEF≤50.0%(OR=1.8)、左心室收缩末期直径(OR=4.5)和舒张末期直径(OR=6.4)、收缩末期室间隔厚度(OR=1.5)、舒张末期室间隔厚度(OR=1.6)、三尖瓣反流(OR=1.5)。术后早期因素,包括LVEF≤50.0%(OR=7.2)、左心室收缩末期直径(OR=4.7)及舒张末期直径(OR=6.1)。结论主动脉瓣置换术后发生低心排出量综合征风险很高,可以根据术前及术后早期的相关因素进行预测。

关 键 词:主动脉瓣病变  瓣膜置换手术  低心排出量综合征  预测因素

Predictive factors related to low cardiac output syndrome following aortic valve replacement
Affiliation:MA Hong, ZHANG Qixia, LI Xiaojing, et al. (Department of Intensive Care Unit, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325027, China)
Abstract:Objective To investigate the predictive factors related to postoperative low cardiac output syndrome in pa-tients after aortic valve replacement due to aortic stenosis or regurgitation. Methods Three hundred patients with aortic valve defect due to aortic stenosis (AS, n=150) or aortic incompetence (AI, n=150), who underwent isolated aortic valve replacement were included in the study. Low cardiac output syndrome(LOS) was defined as the need for high dosages of inotropic medication, and/or intra- aortic bal oon pumping to sustain adequate hemodynamic status. Results Postoperative low cardiac output syn-drome developed in 86 patients (28.6%), including 39 patients with AS (26.0%) and 47 patients with AI (31.3%). The development of postoperative LOS were associated with the fol owing factors (odds ratio in parentheses): for AS group: advanced age (OR=4.7), obesity (OR=1.8), history of heart failure (OR=1.7), end- systolic (OR=5.5) and end- diastolic intraventricular septum thickness (OR=4.2), left atrial diameter (OR=1.6), mitral and tricuspid regurgitation (OR=1.9, 1.5) before surgery, LVEF≤50.0%(OR=5.4), left ventricular end systolic diameter (OR=1.7), left ventricular end diastolic diameter (OR=1.9) and mitral regurgitation (OR=4.1) in early postoperative period; for AI group:advanced age (OR=1.9), obesity (OR=4.8), history of heart failure (OR=1.7), LVEF≤50.0%(OR=1.8), left ventricular end- systolic (OR=4.5), end- diastolic diameters (OR=6.4), left ventricular end systolic di-ameter (OR=1.5), left ventricular end diastolic diameter(OR=1.6), and tricuspid regurgitation (OR=1.5) in preoperative period and left ventricular end- systolic (OR=4.7) and end- diastolic diameters (OR=6.1), and LVEF≤50.0% (OR=7.2) in early postoperative period. Conclusion The patients at high risk for the development of low cardiac output syndrome should be the focus of trials of new techniques of myocardial
Keywords:Aortic valve defect  Aortic valve replacement  Low output syndrome  Predictors
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