Revisiting right anterior oblique projections for the triangle of Koch: implications from computed tomography.

ABSTRACT:

Background

Variability in the anatomy and orientation of the triangle of Koch (TK) complicates ablation procedures involving the atrioventricular (AV) node. We used CT angiography (CTA) to assess the anatomical TK orientation, the CS ostium direction, and the relationship between the two, and we validated an individualized CS-guided projection during ablation procedures.

Methods

In 104 patients without structural heart disease undergoing computed tomography (CT) angiography, TK orientations were determined in relation to the coronary sinus ostium (CSo) as well as two standard right anterior oblique (RAO) projection angles (30^o and 45^o) commonly used in ablation procedures.

Results

A CS-guided RAO projection (RAOCS) was shown to best track the ori

SUBMITTER: Wang Y 

PROVIDER: S-EPMC7446209 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature