Impact of various intravascular ultrasound criteria for stent optimization on the six-month angiographic restenosis. |
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| Authors: | Myeong-Ki Hong Cheol Whan Lee June-Hong Kim Young-Hak Kim Jong-Min Song Duk-Hyun Kang Jae-Kwan Song Jae-Joong Kim Seong-Wook Park Seung-Jung Park |
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| Affiliation: | Department of Medicine, University of Ulsan College of Medicine, Cardiac Center, Asan Medical Center, Seoul, Korea. |
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| Abstract: | We evaluated the impact of different intravascular ultrasound (IVUS) criteria on 6-month angiographic restenosis in 511 patients with 560 lesions. Seven IVUS criteria were evaluated in this study; stent area at lesion segment 1) > or = 100% of distal reference lumen area, 2) > or = 90% of distal reference lumen area, 3) > or = 80% of average reference lumen area, 4) > or = 90% of average reference lumen area, 5) > or = 55% of average reference vessel area, 6) >/= 7 mm(2), and 7) > or = 2). Using the relative measurement (criteria 1-5), the angiographic restenosis rate was not statistically different. However, absolute measurement of stent area > or = 9 mm(2) (criteria 6 and 7) were associated with significantly lower restenosis rate (14.8% vs. 30.9%, P = 0.001, and 13.5% vs. 24.6%, P = 0.006, respectively). In conclusions, using the relative measurement of IVUS criteria, the occurrence of angiographic restenosis might not be predicted. The absolute measurement of IVUS stent area was the predictor of angiographic restenosis. |
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| Keywords: | stent restenosis intravascular ultrasound |
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