[Three months angiographic follow-up after successful percutaneous transluminal angioplasty]

Percutaneous Transluminal Angioplasty (PTA) is applied to supra-aortic arteries. Although first follow-up angiography after coronary angioplasty is usually undergone three or four months later, there are few reports of follow-up angiography after PTA of supraaortic arteries. Because of this, we performed follow-up angiography three months after successful PTA on eight cases of stenosis in seven patients. Although no symptom due to restenosis occurred, it was shown to have occurred in one of four cases of internal carotid arterial stenosis. It was a case of ostial stenosis of a left common carotid artery. Restenosis occurred in neither two cases of subclavian arterial stenosis, nor in a case of left middle cerebral arterial stenosis. The overall restenosis rate was 25%. We suspect that it is important to perform a follow-up angiography after angioplasty of supra-aortic arteries, and our result suggests that the restenosis might occur before three months after PTA as well as after coronary angioplasty.