Lewis B. Schwartz, MD, Michael Belkin, MD, Magruder C

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Presentation transcript:

Validation of a new and specific intraoperative measurement of vein graft resistance Lewis B. Schwartz, MD, Michael Belkin, MD, Magruder C. Donaldson, MD, James B. Knox, MD, Damian M. Craig, MS, John Moawad, MD, James F. McKinsey, MD, Giancarlo Piano, MD, Hisham S. Bassiouny, MD, Anthony D. Whittemore, MD Journal of Vascular Surgery Volume 25, Issue 6, Pages 1033-1043 (June 1997) DOI: 10.1016/S0741-5214(97)70127-7 Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 1 Instrumentation of vein graft for the measurement of ZL. P prox , Proximal pressure; Q, blood flow; P dist , distal pressure. Journal of Vascular Surgery 1997 25, 1033-1043DOI: (10.1016/S0741-5214(97)70127-7) Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 2 Calculation of ZL in a femoropopliteal bypass. A, Waveforms. B, ZL curve. C, Calculation of ∫ZL (∫ZL = 10.5 × 103 dyne · cm−5). D, Comparison of ZL curves at baseline and after papaverine infusion. Journal of Vascular Surgery 1997 25, 1033-1043DOI: (10.1016/S0741-5214(97)70127-7) Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 2 Calculation of ZL in a femoropopliteal bypass. A, Waveforms. B, ZL curve. C, Calculation of ∫ZL (∫ZL = 10.5 × 103 dyne · cm−5). D, Comparison of ZL curves at baseline and after papaverine infusion. Journal of Vascular Surgery 1997 25, 1033-1043DOI: (10.1016/S0741-5214(97)70127-7) Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 2 Calculation of ZL in a femoropopliteal bypass. A, Waveforms. B, ZL curve. C, Calculation of ∫ZL (∫ZL = 10.5 × 103 dyne · cm−5). D, Comparison of ZL curves at baseline and after papaverine infusion. Journal of Vascular Surgery 1997 25, 1033-1043DOI: (10.1016/S0741-5214(97)70127-7) Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 2 Calculation of ZL in a femoropopliteal bypass. A, Waveforms. B, ZL curve. C, Calculation of ∫ZL (∫ZL = 10.5 × 103 dyne · cm−5). D, Comparison of ZL curves at baseline and after papaverine infusion. Journal of Vascular Surgery 1997 25, 1033-1043DOI: (10.1016/S0741-5214(97)70127-7) Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 3 One-year results of 73 infrainguinal autologous revascularization procedures in 68 patients. Analysis is by the life table method. Standard error bars have been removed for clarity, but all were <10%. Number of grafts at risk per interval (primary patency rate) is shown at bottom. Journal of Vascular Surgery 1997 25, 1033-1043DOI: (10.1016/S0741-5214(97)70127-7) Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 4 One-year primary patency data of 73 infrainguinal bypass grafts according to low and high ∫ZL. Analysis is by the life table method. Difference between the curves is highly statistically significant (p < 0.0001). Number of grafts at risk per interval is shown at bottom. Journal of Vascular Surgery 1997 25, 1033-1043DOI: (10.1016/S0741-5214(97)70127-7) Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 5 One-year primary patency data of 73 infrainguinal bypass grafts according to low and high stimulated R.44 Analysis is by the life table method. Difference between the curves is not statistically significant. Number of grafts at risk per interval is shown at bottom. Journal of Vascular Surgery 1997 25, 1033-1043DOI: (10.1016/S0741-5214(97)70127-7) Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions