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AVR 评分预测主动脉瓣置换术 30 天死亡率。

Predicting 30-day mortality of aortic valve replacement by the AVR score.

机构信息

Department of Cardiology, St. Antonius Hospital, P.O. Box 2500, 3435 CM, Nieuwegein, the Netherlands,

出版信息

Neth Heart J. 2011 Jun;19(6):273-8. doi: 10.1007/s12471-011-0103-7.

Abstract

OBJECTIVES

The objective of this study is to develop a simple risk score to predict 30-day mortality of aortic valve replacement (AVR).

METHODS

In a development set of 673 consecutive patients who underwent AVR between 1990 and 1993, four independent predictors for 30-day mortality were identified: body mass index (BMI) ≥30, BMI <20, previous coronary artery bypass grafting (CABG) and recent myocardial infarction. Based on these predictors, a 30-day mortality risk score-the AVR score-was developed. The AVR score was validated on a validation set of 673 consecutive patients who underwent AVR almost two decennia later in the same hospital.

RESULTS

Thirty-day mortality in the development set was ≤2% in the absence of any predictor (class I, low risk), 2-5% in the solitary presence of BMI ≥30 (class II, mild risk), 5-15% in the solitary presence of previous CABG or recent myocardial infarction (class III, moderate risk), and >15% in the solitary presence of BMI <20, or any combination of BMI ≥30, previous CABG or recent myocardial infarction (class IV, high risk). The AVR score correctly predicted 30-day mortality in the validation set: observed 30-day mortality in the validation set was 2.3% in 487 class I patients, 4.4% in 137 class II patients, 13.3% in 30 class III patients and 15.8% in 19 class IV patients.

CONCLUSIONS

The AVR score is a simple risk score validated to predict 30-day mortality of AVR.

摘要

目的

本研究旨在开发一种简单的风险评分,以预测主动脉瓣置换术(AVR)的 30 天死亡率。

方法

在 1990 年至 1993 年间连续接受 AVR 的 673 例患者的发展数据集,确定了四个独立的 30 天死亡率预测因子:体重指数(BMI)≥30、BMI<20、既往冠状动脉旁路移植术(CABG)和近期心肌梗死。基于这些预测因素,开发了 30 天死亡率风险评分-AVR 评分。该 AVR 评分在同一医院近二十年后对 673 例连续接受 AVR 的验证数据集进行了验证。

结果

在无任何预测因子的情况下,发展数据集的 30 天死亡率为≤2%(I 级,低风险),单独存在 BMI≥30 时为 2-5%(II 级,轻度风险),单独存在既往 CABG 或近期心肌梗死时为 5-15%(III 级,中度风险),且 BMI<20 时或任何 BMI≥30、既往 CABG 或近期心肌梗死的组合存在时>15%(IV 级,高风险)。AVR 评分正确预测了验证数据集的 30 天死亡率:验证数据集的观察到的 30 天死亡率在 487 例 I 级患者中为 2.3%,在 137 例 II 级患者中为 4.4%,在 30 例 III 级患者中为 13.3%,在 19 例 IV 级患者中为 15.8%。

结论

AVR 评分是一种简单的风险评分,经验证可预测 AVR 的 30 天死亡率。

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