Comprehensive use of cardiac computed tomography to guide left ventricular lead placement in cardiac resynchronization therapy.

ABSTRACT:

Background

Optimal lead positioning is an important determinant of cardiac resynchronization therapy (CRT) response.

Objective

The purpose of this study was to evaluate cardiac computed tomography (CT) selection of the optimal epicardial vein for left ventricular (LV) lead placement by targeting regions of late mechanical activation and avoiding myocardial scar.

Methods

Eighteen patients undergoing CRT upgrade with existing pacing systems underwent preimplant electrocardiogram-gated cardiac CT to assess wall thickness, hypoperfusion, late mechanical activation, and regions of myocardial scar by the derivation of the stretch quantifier for endocardial engraved zones (SQUEEZ) algorithm. Cardiac venous anatomy was mapped to individualized American Heart Association (AHA)

SUBMITTER: Behar JM 

PROVIDER: S-EPMC5575356 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature