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- W2023952842 abstract "The effect of balloon size on the success of coronary angioplasty was studied to develop quantitative criteria for optimal selection of balloon size. Coronary dimensions of 165 stenotic lesions were measured by computer-assisted cinevideodensitometry in 120 patients who had undergone angioplasty with a balloon selected by visual estimates. Cross-sectional areas and diameters of normal and stenotic arterial segments were measured before and after angioplasty by a previously validated cinevideodensitometric technique. The diameter of the inflated balloon compared with that of the normal arterial segment was expressed as a ratio for sizing balloons. Oversized balloons with a ratio >1.3 (n = 35) caused a high (37%) incidence of dissection, with three severely compromised arterial lumens. Undersized balloons with a ratio <0.9 (n = 29) often resulted in significant (>50% diameter stenosis) residual stenotic lesions (21%) and a significantly (p < 0.05) higher rate of repeat angioplasty for restenosis. Selection of balloon sizes with ratios in the 0.9 to 1.3 range (n = 101) resulted in a low (4%) incidence of dissection with few patients (3%) having significant residual stenosis. Mean residual stenosis (percent diameter reduction) was most severe for undersized (35.0 ± 18%) or oversized (23.1 ± 19%) balloons and least severe for balloons with a ratio of 0.9 to 1.3 (18.7 ± 14%) (p < 0.001). Repeat angioplasty for restenosis was more frequently required (p < 0.05) for lesions dilated with undersized balloons. Thus, selection of angioplasty balloons that approximate or slightly exceed the diameter of the normal arterial diameter yields optimal angiographic results with minimal dissections and minimal residual stenotic lesions." @default.
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- W2023952842 date "1989-04-01" @default.
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- W2023952842 title "Importance of balloon size in coronary angioplasty" @default.
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- W2023952842 doi "https://doi.org/10.1016/0735-1097(89)90267-2" @default.
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