Validity of the APPLE and CAAP-AF Risk Scoring Systems

This paper looked at the validity of two atrial fibrillation (AF) risk scores (CAAP-AF and APPLE) for patients with heart failure. The authors evaluated baseline characteristics, AF recurrence rates at one year post-ablation, and risk scores in 230 patients with AF and heart failure who underwent pulmonary vein isolation. During the 12-month follow-up, 76 of 230 patients with heart failure experienced recurrent AF after ablation. Media APPLE and CAAP-AF scores were 1.5 and 4.9, respectively, which did not differ from those of patients with and without recurrent AF. “Validated predictive risk scores for recurrent AF after catheter ablation exhibit limited predictive ability in cohorts of AF and HF. Additional tools are needed to facilitate risk stratification and patient selection for AF ablation in patients with concomitant HF,” the authors wrote.

Black-Meier E, et al. Pacing Clin Electrophysiol. 2019;doi:10.1111/pace.13805