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Phasic Variations and Magnitude of Pressure Recovery Distal to Human Coronary Artery Stenoses During Angioplasty

[+] Author Affiliations
Rupak K. Banerjee

University of Cincinnati, Cincinnati, OH

Lloyd H. Back

California Institute of Technology, Pasadena, CA

Martin R. Back

University of South Florida, Tampa, FL

Paper No. IMECE2002-32581, pp. 283-284; 2 pages
doi:10.1115/IMECE2002-32581
From:
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Advances in Bioengineering
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Bioengineering Division
  • ISBN: 0-7918-3650-9 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME

abstract

Distal pressure recovery coefficients (cpr = kcpr∞ ) were determined from pulsatile hemodynamic computations for the 32 patient group of Wilson et al. 1988 during coronary angioplasty in conjunction with quantitative angiography and measurements of coronary flow reserve (CFR). Before angioplasty, values of the factor k(t) ranged 2–4 times high than a reference value, cpr∞ = 0.18, and varied during the flow acceleration and deceleration phases of the cardiac cycle. After angioplasty, values of k(t) ranged from 0.8–1.4, roughly the same magnitude as cpr∞ = 0.46, and also varied phasically.

Copyright © 2002 by ASME

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