Successful recanalization of a left anterior descending chronic total occlusion via an ipsilateral intraseptal collateral using reverse CART technique.

The retrograde approach using collaterals has been introduced for percutaneous dilatation and opening of chronic total occlusion of the coronary arteries. The controlled antegrade and retrograde tracking (CART) strategy has been developed to improve guidewire crossing and successful recanalization. We herein describe a case of left anterior descending chronic total occlusion that was successfully recanalized using ipsilateral intraseptal collateral by reverse CART technique.