Validation of the 2019 Expert Consensus Algorithm for the Management of Conduction Disturbances After TAVR

OBJECTIVES:The aim of this study was to validate the 2019 consensus algorithm in a large cohort of contemporary transcatheter aortic valve replacement (TAVR) patients. BACKGROUND:The optimal management of patients with atrioventricular conduction disturbances after TAVR is unknown. Guidance was consolidated in an expert consensus algorithm in 2019. METHODS:In a retrospective analysis of a prospective registry, patients were classified according to the 2019 consensus algorithm as eligible for early discharge (day 1 or 2 after TAVR), higher risk for high-degree atrioventricular block (HAVB) or complete heart block (CHB) or in need for a permanent pacemaker (PPM). The primary endpoint was the incidence of PPM implantation for HAVB or CHB within 30 days after TAVR. Patients with prior PPM or implantable cardioverter-defibrillator implantation, valve-in-valve procedures, or incomplete electrocardiographic data were excluded. RESULTS:Among 1,439 patients undergoing TAVR between January 2014 and December 2019, the 2019 consensus algorithm classified 73% as eligible for early discharge, 21% as at higher risk for HAVB or CHB, and 6% as in need of PPM. PPM implantation for HAVB or CHB occurred in 234 patients (16%) within 30 days after TAVR. The incidence of PPM implantation was 2.7% in the early discharge group, 41% in the group with higher risk for HAVB or CHB, and 100% in the PPM group. CONCLUSIONS:The 2019 consensus algorithm safely identifies patients with no need for PPM implantation. This strategy allows more uniform management of TAVR patients and facilitates early discharge of low-risk patients without prolonged monitoring in 3 of 4 patients. However, the algorithm is less precise in the identification of high-risk patients.