Coronary intervention is a well established treatment of ischemic heart diseases. However, acute arterial occlusion and restenosis have remained as the principal limitations of coronary intervention. This study was aimed to analyze the acute and long-term, and the clinical angiographic results of the coronary intervention for restenotic lesions.

Between March 1996 and July 1997 at Chonnam University Hospital, second interventions were performed in one hundred restenotic coronary lesions of ninety patients (age 58.5±9.0 year, M:F = 5:1), i.e. percutaneous transluminal coronary angioplasty (PTCA) or stent implantation for the treatment of restenosis.

1) Initial interventions were PTCA in 75 lesions (Group I) and stent in 25 lesions (Group II). There were no differences in clinical manifestations, angiographic findings and follow-up period between the two groups. 2) The method of the second intervention for the restenotic lesions after PTCA were either PTCA or stent implantation ; in Group I PTCA was performed in 27 (37%) lesions and stent in 46 (63%), In Group II, PTCA was performed in 20 (91%) lesions and stent in 2 (9%) lesions. The overall success rate of the second intervention for the restenotic lesion was 96%. 3) Follow-up angiogram at 5.5±2.9 months after the second intervention revealed the second restenosis rates of 44% (8/18) after stent and 50% (7/14) after PTCA.

Second intervention for restenotic lesion can be performed with high success rate. Second restenosis rate are not different between the PTCA and stent groups.