Success rate of Percutaneous Coronary Intervention in patients with Chronic Total Occlusion of Coronary Arteries

BACKGROUND: Chronic total occlusion of coronary arteries (CTO) remains one of the most challenging lesion subsets in interventional cardiology even with the development of medical devices and operator expertise. This study sought to determine the overall success rate of percutaneous coronary intervention (PCI) for this lesion in our center and to examine the relationship between variables such as pa-tients ’ characteristics, clinical risk factors, lesion characteristics and procedural success rate. METHODS: Clinical and coronary angiographic data of 58 patients with CTO who underwent PCI between May 2004 and November 2006 in Ghaem Hospital were retrospectively analyzed. A P value of less than 0.05 was considered statistically significant. Analyses were performed us-ing the software packages SPSS (11.5 version). RESULTS: In this study, there were 58 CTO lesions in 41 men (70.7%) and 17 women (29.3%) with a mean occlusion time of 5 months. The overall success rate of PCI was 77.6%. There was no significant correlation between the suc-cess rate of PCI and the patient’s age, sex, clinical risk factors, history of recent MI and duratio