Color-flow duplex criteria for grading stenosis in infrainguinal vein grafts Jacob Buth, MD, PhD, Ben Disselhoff, MD, Casper Sommeling, MD, Leo Stam,

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Presentation transcript:

Color-flow duplex criteria for grading stenosis in infrainguinal vein grafts Jacob Buth, MD, PhD, Ben Disselhoff, MD, Casper Sommeling, MD, Leo Stam, MD Journal of Vascular Surgery Volume 14, Issue 6, Pages 716-728 (December 1991) DOI: 10.1067/mva.1991.32966 Copyright © 1991 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 1 Evaluated parameters: a, PSV-graft, PSV measured at the normal midthigh graft. b, PSV-max., PSV measured at the stenosis or, in normal bypasses, at the below-knee graft. c, PSV-index, ratio of a and b. d, EDV, EDV velocity measured at the stenosis, or in normal bypasses at the below-knee graft. Journal of Vascular Surgery 1991 14, 716-728DOI: (10.1067/mva.1991.32966) Copyright © 1991 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 2 A, IA DSA, arrows indicate severe stenosis; B, color-flow image with 59% diameter reduction; C, flow velocity spectrum recording in severe stenosis. There is acceleration of peak systolic and diastolic flow velocities. Note underestimation of stenotic diameter reduction by color-flow image. Journal of Vascular Surgery 1991 14, 716-728DOI: (10.1067/mva.1991.32966) Copyright © 1991 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 3 Correlation of PSV-index with severity of stenosis. Least squares regression line is represented. Journal of Vascular Surgery 1991 14, 716-728DOI: (10.1067/mva.1991.32966) Copyright © 1991 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 4 Correlation of EDV with severity of stenosis as determined by DSA. Least squares regression lines are represented for all group B grafts (solid line) as well as for grafts with >70% stenosis (broken line). Journal of Vascular Surgery 1991 14, 716-728DOI: (10.1067/mva.1991.32966) Copyright © 1991 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 5 Profiles for three parameters to discriminate grafts with and without lesions of different severity. Journal of Vascular Surgery 1991 14, 716-728DOI: (10.1067/mva.1991.32966) Copyright © 1991 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions