Unexpected delayed complete atrioventricular block after Cardioband implantation

We present the case of an 80‐year‐old‐gentleman with prohibitive surgical risk, treated with Cardioband implantation for functional MR with an evident P1–P2 cleft and P2–P3 indentation, a relative contraindication to MitraClip implantation. We achieved procedural success with significative mitral annulus reduction (30% anteroposterior reduction from 37 to 26 mm) and MR reduction (from grade 4 to grade 1–2). A late onset Mobitz 2 AV block developed after 26 hr and evolved to complete AV block in the following day, requiring definitive biventricular pacemaker (PM). Less than 200 Cardioband implantations have been performed but, to our knowledge, this is the first reported AV block, possibly facilitated by the pre‐existing bifascicular block, suggesting the opportunity of prolonged ECG monitoring after Cardioband like any other mechanical transcatheter structural intervention possibly affecting the AV conduction system.
Source: Catheterization and Cardiovascular Interventions - Category: Cardiovascular & Thoracic Surgery Authors: Tags: VALVULAR AND STRUCTURAL HEART DISEASES Source Type: research