Inadvertent thebesian vein cannulation during radial access ventriculography.

The first case is of a 72-year-old woman undergoing angiography for aortic stenosis workup via the right radial approach. An Multipurpose 1 (MPA-1) catheter, Cordis Corporation, East Bridgewater, New Jersey) was used to direct the wire across the valve and subsequently used for ventriculography due to difficulty crossing the severely stenosed valve. There was visualization of the thebesian vein, coronary vein, and sinus. Still image (Fig. 1) during