Analysis and Comparison of Lethal Factors in Valve Replacement Surgery

Abstract

This research mainly discusses the lethal factors of patients who receive the surgery of heart valve replacement. In this study, on the basis of a large number of clinical data, through the establishment of Logistics regressive mathematical model, the relevant factors in the recent death and the long-term death can be obtained. Through the analysis and comparison of these factors, we found that the main factors in the recent death is: The ASD in cardiovascular disease, PDA, admission cardiac function in class III-IV, the time pf artery block between 61and 90 minutes, the mitral valve ring type is Devega in contraction , the postoperative ejection fraction between 25% and 35 %, the valvula bicuspidalis leaking after surgery is high-risk factors, namely, the patients with above symptoms will have high risks of deaths; While the mortality-related factors with long-term death are: diabetes, ejection fraction, the time of artery block and age. Among them, the history of diabetes, the postoperative ejection fraction less than 35%, the time of artery block between 61 and 90 minutes, patients’ age younger than 15 years and older than 65 years are as high-risk factors. And the influencing factors on both the long-term death and recent death are quite different.