A curious case of impossible coronary sinus cannulation

Indian Pacing Electrophysiol J. 2019 Sep-Oct;19(5):202-204. doi: 10.1016/j.ipej.2019.09.003. Epub 2019 Sep 12.

Abstract

A 40-year-old male, diagnosed to have WPW syndrome and symptomatic with recurrent palpitations, was taken up for radiofrequency ablation. There was difficulty in coronary sinus cannulation. Coronary venogram revealed coronary sinus atresia with persistent left superior vena cava, and collateral venous pathways draining into the right atrium. This case is discussed for the rare coronary venous anomaly, its embryology and the difficulties in the management during electrophysiological studies.