Work

Reduced ejection fraction as the sole potential limitation for wire pacing in transfemoral aortic valve replacement

Year: 2026

Type: article

Abstract: Background In recent years, fast-track protocols have been developed for transcatheter aortic valve replacement/implantation (TAVR/TAVI) to further simplify the procedure. Traditionally, intraprocedural rapid ventricular pacing for valve deployment is achieved via a transvenous temporary pacing wire inserted into the right ventricle. Aim The aim of the present study was to assess the safety and efficacy of a temporary left ventricular pacing (wire pacing) technique during the TAVI procedure. Methods In this prospective observational study, 307 consecutive patients undergoing TAVI with either the Edwards SAPIEN S3 ( N = 161; 52.4%) or the Medtronic Evolut Pro+ ( N = 146; 47.6%) were included. Left ventricular pacing was performed using the valve delivery guidewire. The primary endpoint was defined as successful rapid pacing. Safety outcomes and both qualitative and quantitative secondary endpoints were also analyzed and compared to those of a conventional previous TAVI cohort that received transvenous right ventricular pacing. Results Left ventricular pacing was successful in 93.8% of cases ( n = 288). Moreover, 16 patients (5.4%) required a temporary pacing wire during the procedure due to complete heart block. Procedural success of TAVI was achieved in 98.0% of patients ( n = 294). Periprocedural complications were low and included an in-hospital death rate of 1.6%, major bleeding in 1.3% of patients, and permanent pacemaker implantation in 10.2% of patients following TAVI. No incidence of cardiac perforation or tamponade was observed. Safety outcomes were comparable to those of the conventional right ventricular pacing group. Reduced left ventricular ejection fraction (LVEF) was significantly associated with unsuccessful left ventricular guidewire pacing ( p = 0.036). An LVEF cutoff of <52% best predicted left ventricular stimulation failure (area under the curve 0.632, sensitivity 63.2%, specificity 63.8%, p = 0.045). Conclusion Wire pacing is safe and effective, should be preferred for TAVI, and eliminates the risk of complications associated with transvenous pacing wires. Nonetheless, caution is advised when using this technique in patients with reduced ejection fraction or a high risk of conduction disorders.

Source: Frontiers in Cardiovascular Medicine

DOI: 10.3389/fcvm.2025.1579898