Cox Regression analysis of the correlation of selected patient characteristics with the incidence of ventricular arrhythmias (VA) during cardiac resynchronization therapy (CRT).

Patients on therapy with an ACE inhibitor or an angiotensin receptor antagonist, as well as females and responders to CRT show a significantly risk of VA (HR = 0.24–0.53, p<0.05). Secondary preventive indication for device implantation is associated with a significantly higher risk of such events (HR = 3.13, p<0.05). Abbreviations: b = beta, SE = standard error, P = p-value, Exp(b) = hazard ratio (HR), CI = confidence interval.