Clinical Experiences of Coronary MAC (Maximum Arterial Re-Creation) Stent

Abstract

Background and ObjectivesWe previously reported the effects of MAC Maximum Arterial Re-Creation stent on stent restenosis in a porcine model. The clinical trial was performed in patients with ischemic heart disease after MAC stent implantation. Materials and Method We analyzed the clinical and angiographic re-sults in 20 patients in 22 lesions 15 M, 5 F, 59 11 year , who underwent MAC stent at Chonnam University Hospital between Nov 97 and Aug 98. Clinical diagnosis was 13 unstable angina 65 , 6 acute myocardial infarction 30 and 1 old myocardial infarction 5 . Results Indications for stent were 3 de novo lesion 13.6 , 7 restenosis 31.8 , 8 suboptimal angioplasty result 36.4and 4 bail-out procedure 18.2 . Target stented coronary arteries were 15 left anterior descending coronary arteries 67.3 , 2 left circumflex coronary arteries 9.1 and 5 right coronary arteries 22.7 . Morphologic types were 13 type B1 59.1 , 5 B2 22.7 and 4 C 18.2 . Minimal luminal diameter MLD before stent was 0.75 0.35 mm and percent diameter stenosis DS was 75 11.5 , which were improved 2.97 0.28 mm in MLD and 2.79 5.4 in DS after stent. MAC stent was placed successfully in all patients and one case of acute stent thrombosis was improved after ReoPro infusion. Mean follow-up period was 5.2 3.2 months and 100 event-free survival was observed in all patients. Follow-up coronary angiography was performed in 5 patients and showed no stent restenosis. Conclusion The MAC stent is one of effective and safe devices in the treatment of coronary artery diseases without significant complications and target vessel revascularization. Korean Circulation J 1998 ; 28 10 : 1700-1706 KEY WORD MAC Maximum Arterial Re-Creation stent. 서 론