IL6 and atrial fibrillation: PROSE-ICD score’s calculation: predictors of appropriate ICD therapy: BUN > 20 mg/dL, hsCRP > 9.42 mg/L, no beta blocker therapy, and hematocrit ≥ 38%; predictors of HF hospitalization: atrial fibrillation, NYHA class III/IV, LVEF ≤ 20%, HS-IL6 > 4.03 pg/ml, hemoglobin < 12 g/dL. One point was attributed to each predictor.