Massive Myocardial Staining and Thebesian Venous Opacification during Complicated Coronary Angiography.

Myocardial staining is a complication of coronary angiography or intervention procedures and consists of extravasations of contrast material into the myocardium. The powerful injection of contrast (myocardial staining) is caused by the improper positioning of the angiography or guiding catheter and can lead to refractory ventricular tachyarrhythmias and occasionally cardiac death. It results in small puffs of dye extravasating into pericoronary space (epicardial or myocardial).

Epicardial adipose tissue is related to coronary collateral vessel formation in patients with acute coronary syndrome.

Objectives: Epicardial adipose tissue (EAT) is the ectopic fat surrounding the heart, and it may contribute to coronary collateral vessel (CCV) formation. We aimed to evaluate the association of EAT with the presence of CCV in patients with acute coronary syndrome (ACS).

Design: A total of 230 patients with ACS were included.