Abstract
Although published reports about direct stenting in treating stable coronary artery disease have been increasing, the number of studies regarding direct stenting for acute coronary syndrome is limited. In this study, we report immediate and mid-term results of patients who underwent direct stenting for treating acute coronary syndrome. The average lesion length was 12.1 ± 3.3 mm. The preprocedure average minimum luminal diameter (MLD) was 0.67 ± 0.33 mm. Post-procedure average MLD was 3.19 ± 0.42 mm. In 35 of the 36 cases (97%), the stent delivery system crossed the lesion and was implanted successfully. In one case, an acute occlusion, which was treated by percutaneous transluminal coronary angioplasty (PTCA), occurred. The rate of procedure success was 94%. The amount of contrast media used was 88 ± 16 ml and duration of radiation exposure was 9 ± 2 min. Control angiography was performed in 28 out of 35 cases (80%). Seven patients who did not consent to coronary angiography were asymptomatic and had negative exercise tests. MLD was 2.66 ± 0.53 mm after a six month follow-up. The clinical and angiographic restenosis rates were 14% (5/35) and 18% (5/28), respectively. Three of the five cases of restenosis were treated by excimer laser coronary angioplasty (ELCA) and PTCA and the other two were treated with PTCA only. Target lesion revascularization rate was 14% (5/35). The rate of major adverse cardiac events (MACE) was 17% (6/35) after the six month follow-up period. Based on these results, we conclude that direct stenting for acute coronary syndrome is safe if the lesion is determined to be suitable.
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