Determinants of successful percutaneus coronary intervention in patients with a chronic total coronary occlusion

Chronic total coronary occlusion is found in 10%-20% of selectively performed coronary angiographic procedures with well developed collaterals and myocardial viability maintained under resting Percutaneus recanalization of chronic total occlusion using current techniques with conventional wires.1. To estimate the success rate.2. To determine the predictors of success.