Prediction of acute-coronary-syndrome using newly-defined R-CHADS-VASc score among patients with chest pain.

Background: Chest-pain patients with no evidence of acute coronary syndrome might still be at risk for adverse outcomes. Adding renal function to the classic scoring of CHADS and CHADS VASC may improve risk stratification of chest-pain patients discharged from internal medicine wards after acute coronary syndrome (ACS) rule-out.

Methods: We accessed medical records of patients admitted to internal medicine wards during 2010-2016 and discharged following ACS rule-out. A RCHADS-VASc score model that included higher scores as kidney function deteriorated was calculated and compared to CHADS and CHADS VASC scores. The primary endpoint was the composite of 30-day ACS and mortality. One-year ACS and 1-year mortality were the secondary endpoints. The study included 12,449 patients, stratified into three risk groups according to their RCHADS-VASc score.

Results: Participants were stratified into 3 groups according to RCHADS-VASc score. RCHADS-VASc score predicted better the composite outcome of ACS and 30-day and 1-year mortality after discharge (OR: 4, 95%, CI 2.3-7, p < 0.01 and OR: 13.3, 95% CI 7.8-22.7, p < 0.01, respectively). Receiver operating characteristic curve analysis showed better risk stratification of the RCHADS-VASc compared with both CHADS and CHADS VASC score.

Conclusions: The RCHADS-VASc score is a better predictor of short- and long-term cardiovascular morbidity and mortality after hospital discharge.