High-grade atrioventricular block occurring during percutaneous closure of patent foramen ovale: A case report

Abstract

Backgroundâ: Percutaneous closure of patent foramen ovale (PFO) is recommended for patients presenting with PFO-related stroke. Acute high-grade conduction disturbances occurring during PFO closure procedure have not been previously reported. Case summaryâ: We describe for the first time a case of reversible complete atrioventricular block which occurred during closure of a PFO. Discussionâ: We hypothesized that the block was the result of atrioventricular node compression-likely caused by the right-atrial disc of the 35-mm PFO closure device. We suggest implanting smaller devices in order to prevent atrioventricular conduction disturbances.