Ivabradine AH time prolongation: case reportA 60-year-old patient [sex not stated] developed AH time prolongation during off-label treatment with ivabradine. The patient received oral ivabradine 5mg following a cardiac ablation. Thirty minutes later, the patient experienced AH time prolongation whereas the HV time remained unchanged [outcome not stated].Author comment: "The patient was given 5mg oral ivabradine ("off-label") after the ablation"."Ivabradine caused a significant AH time prolongation during fixed cycle length stimulation after 30min whereas the HV time remained unchanged".