Vectorcardiographic QRS area is associated with long-term outcome after cardiac resynchronization therapy.

ABSTRACT:

Background

Recent studies have suggested that vectorcardiographic measures predict left ventricular (LV) reverse remodeling and clinical outcome in patients receiving cardiac resynchronization therapy (CRT).

Objectives

The objectives of this study were to compare predictive abilities of different vectorcardiographic measures (QRS area and sum absolute QRS-T integral) and transformation methods (Kors and inverse Dower) and to assess the independent association between the best predictor and outcomes in CRT recipients.

Methods

This retrospective study included CRT recipients with a digital baseline electrocardiogram, QRS duration ≥120 ms, and ejection fraction ≤35%. The end point was a composite of heart transplantation, LV assist device implantation, or all-cause death

SUBMITTER: Emerek K 

PROVIDER: S-EPMC6361713 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature