Extended Rhythm Monitoring to Assess for Ventricular Arrhythmias After Transcatheter Pulmonary Valve Replacement With the Harmony Valve | Circulation: Cardiovascular Interventions
BACKGROUND: Varying rates of nonsustained ventricular tachycardia (NSVT) have been reported early after transcatheter pulmonary valve replacement (TPVR) with the Harmony valve, but data regarding rhythm outcomes beyond hospital discharge are limited. This study aims to characterize ventricular arrhythmias after Harmony TPVR from implant through mid-term follow-up. METHODS: Ventricular arrhythmia data from postimplant telemetry and follow-up extended rhythm monitoring (ERM) were analyzed after Harmony TPVR. RESULTS: Fifty-four patients with tetralogy of Fallot (n=39), valvar pulmonary stenosis (n=10), or pulmonary atresia with intact ventricular septum (n=5) were studied; 22% had prior NSVT and 24% were on prior rhythm medication. On postimplant telemetry, 27 patients (50%) had NSVT, including 1 who had torsade de pointes, but most had <5 episodes. Pre-TPVR NSVT or rhythm medications, diagnosis other than tetralogy, and substantial device contact with the myocardium were associated with
