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Annals of Vascular Surgery

, Volume 8, Issue 2, pp 172–178 | Cite as

Infusion methods for determination of peripheral resistance: Influence of infused medium and back pressure

  • Eric Wahlberg
  • Pal Dag Line
  • Par Olofsson
  • Jesper Swedenborg
Original Articles

Abstract

It has been suggested that peripheral vascular resistance (PR), measured intraoperatively, can predict the outcome of infrainguinal reconstructions. There is, however, a great deal of variability in design and predictive value with this method, and it is prone to technical difficulties and possible errors. The present study evaluated the influence of the choice of infusion medium and the back pressure on PR as measured by the infusion technique. In a porcine model of experimentally induced stenosis, standard PR (calculated by the pressure difference across the stenosis and the Doppler volume flow) was compared with PR based on infusions of blood or saline solution. With blood as the infusion medium there was a significant correlation between the PR and the standard values (r = 0.795,p = 0.0005),whereas there was no correlation when saline solution was infused (r = 0.067,p = 0.345).Subtracting the back pressure resulted in a slight improvement in the correlations between standard PR and PR measured after infusion of blood but not saline solution. In summary, blood should be used as an infusion medium in methods of PR determination, but the influence of back pressure remains uncertain.

Keywords

Public Health Infusion Method Saline Solution Vascular Resistance Pressure Difference 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Annals of Vascular Surgery Inc. 1994

Authors and Affiliations

  • Eric Wahlberg
    • 1
    • 2
  • Pal Dag Line
    • 1
    • 2
  • Par Olofsson
    • 1
    • 2
  • Jesper Swedenborg
    • 1
    • 2
  1. 1.Department of SurgeryKarolinska Hospital (E.W., P.O., and J.S.)StockholmSweden
  2. 2.Department of SurgeryAker Hospital (P.D.L.)OsloNorway

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