T Wave Oversensing in Left Bundle Branch Optimised CRT.

Abstract

Five patients who underwent left bundle branch optimised (LOT)-CRT developed T wave oversensing (TWOS) between 2 months and 2 years post implant. LOT-CRT resulted in greater improvement in left ventricular size and function compared with historical case-matched controls. No patients experienced symptoms or inappropriate therapy as a result of TWOS. This report describes the occurrence, potential mechanisms and management of TWOS in patients undergoing LOT-CRT.