Delayed identification of high-degree atrioventricular block with prolonged asystole revealed after the removal of an implantable loop recorder owing to battery depletion.

There is a need for prolonged monitoring and close follow-up in cases of recurrent unexplained syncope and no diagnosis at the time of ILR explanation. Also, a second ILR should be implanted in cases with no clear diagnosis of syncope that probably has a cardiac origin.

Association between routine biomarkers and atrial fibrillation in patients undergoing implantation of a dual-chamber pacemaker.

Background: Elderly patients having a permanent pacemaker frequently have atrial remodeling. We examined the association between routine biomarkers and atrial fibrillation (AF) in patients receiving a dual-chamber pacemaker for sinus node disease (SND) or second-/third-degree atrioventricular block.

Methods: We recorded clinical, laboratory, and electrocardiographic parameters as well as pacemaker lead parameters at implantation.