Atrial standstill in sinus node disease due to extensive atrial fibrosis: impact on dual chamber pacemaker implantation

Abstract

Partial atrial standstill may be present and prevent atrial lead implantation in patients with sinus node disease. In these patients, recognition of partial atrial standstill and identification of surviving muscular islets with connection to the AV node by mapping studies may still allow synchronous AV sequential pacing.