Comparison of the RF-CL and CACS-CL models to estimate the pretest probability of obstructive coronary artery disease and predict prognosis in patients with stable chest pain and diabetes mellitus.

Background: The most appropriate tool for estimating the pretest probability (PTP) of obstructive coronary artery disease (CAD) in patients with diabetes mellitus (DM) and stable chest pain (SCP) remains unknown. Therefore, we aimed to validate and compare two recent models, namely, the risk factor-weighted clinical likelihood (RF-CL) model and coronary artery calcium score (CACS)-weighted clinical likelihood (CACS-CL) model, in these patient populations.

Methods: A total of 1,245 symptomatic patients with DM, who underwent CACS and coronary computed tomographic angiography (CCTA) scan, were identified and followed up.

[Risk factors for heart failure after right ventricular apical pacing].

Objective: To explore the prevalence and risk factors for the onset of heart failure after right ventricular apical pacing.

Methods: The clinical data of 1 343 patients with pacemaker implantation at our hospital from 2003 to 2008 were analyzed retrospectively. And the predictors of heart failure were evaluated by the Cox proportional hazard model and Kaplan-Meier method.