Table of Contents
Journal of Computational Medicine
Volume 2014, Article ID 419689, 6 pages
http://dx.doi.org/10.1155/2014/419689
Research Article

Reducing the Inconsistency between Doppler and Invasive Measurements of the Severity of Aortic Stenosis Using Aortic Valve Coefficient: A Retrospective Study on Humans

1School of Dynamic Systems, Mechanical Engineering Program, University of Cincinnati, Cincinnati, OH 45221, USA
2Division of Cardiovascular Diseases, University of Cincinnati, Cincinnati, OH 45221, USA

Received 29 January 2014; Revised 26 March 2014; Accepted 26 March 2014; Published 28 May 2014

Academic Editor: Marek Belohlavek

Copyright © 2014 Anup K. Paul et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Linked References

  1. J. Heikkilä, M. Kupari, R. Tilvis, and M. Lindroos, “Prevalence of aortic valve abnormalities in the elderly: an echocardiographic study of a random population sample,” Journal of the American College of Cardiology, vol. 21, no. 5, pp. 1220–1225, 1993. View at Google Scholar · View at Scopus
  2. R. V. Freeman and C. M. Otto, “Spectrum of calcific aortic valve disease: pathogenesis, disease progression, and treatment strategies,” Circulation, vol. 111, no. 24, pp. 3316–3326, 2005. View at Publisher · View at Google Scholar · View at Scopus
  3. P. Pibarot and J. G. Dumesnil, “New concepts in valvular hemodynamics: implications for diagnosis and treatment of aortic stenosis,” Canadian Journal of Cardiology, vol. 23, supplement B, pp. 40B–47B, 2007. View at Google Scholar · View at Scopus
  4. F. Schwarz, P. Baumann, J. Manthey et al., “The effect of aortic valve replacement on survival,” Circulation, vol. 66, no. 5, pp. 1105–1110, 1982. View at Google Scholar · View at Scopus
  5. S. J. Lester, B. Heilbron, K. Gin, A. Dodek, and J. Jue, “The natural history and rate of progression of aortic stenosis,” Chest, vol. 113, no. 4, pp. 1109–1114, 1998. View at Google Scholar · View at Scopus
  6. R. O. Bonow, B. A. Carabello, K. Chatterjee et al., “ACC/AHA 2006 guidelines for the management of patients with valvular heart disease: a report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Writing Committee to Revise the 1998 Guidelines for the Management of Patients with Valvular Heart Disease)—developed in collaboration with the Society of Cardiovascular Anesthesiologists,” Circulation, vol. 48, no. 3, pp. e1–e148, 2006. View at Google Scholar · View at Scopus
  7. H. Baumgartner, J. Hung, J. Bermejo et al., “Echocardiographic assessment of valve stenosis: EAE/ASE recommendations for clinical practice,” Journal of the American Society of Echocardiography, vol. 22, no. 1, pp. 1–23, 2009. View at Publisher · View at Google Scholar · View at Scopus
  8. F. Antonini-Canterin, P. Faggiano, D. Zanuttini, and F. Ribichini, “Is aortic valve resistance more clinically meaningful than valve area in aortic stenosis?” Heart, vol. 82, no. 1, pp. 9–10, 1999. View at Google Scholar · View at Scopus
  9. C. C. Patrick, J. Lynch, and C. C. Jaffe, Introduction to Cardiothoracic Imaging, Yale University, 2006.
  10. R. Gorlin and S. G. Gorlin, “Hydraulic formula for calculation of the area of the stenotic mitral valve, other cardiac valves, and central circulatory shunts. I,” American Heart Journal, vol. 41, no. 1, pp. 1–29, 1951. View at Google Scholar · View at Scopus
  11. C. Clark, “The fluid mechanics of aortic stenosis. I. Theory and steady flow experiments,” Journal of Biomechanics, vol. 9, no. 8, pp. 521–528, 1976. View at Google Scholar · View at Scopus
  12. C. Clark, “The fluid mechanics of aortic stenosis. II. Unsteady flow experiments,” Journal of Biomechanics, vol. 9, no. 9, pp. 567–573, 1976. View at Google Scholar · View at Scopus
  13. A. E. Weyman and M. Scherrer-Crosbie, “Aortic stenosis: physics and physiology—what do the numbers really mean?” Reviews in Cardiovascular Medicine, vol. 6, no. 1, pp. 23–32, 2005. View at Google Scholar · View at Scopus
  14. P. Gjertsson, K. Caidahl, G. Svensson, I. Wallentin, and O. Bech-Hanssen, “Important pressure recovery in patients with aortic stenosis and high Doppler gradients,” The American Journal Cardiology, vol. 88, no. 2, pp. 139–144, 2001. View at Publisher · View at Google Scholar · View at Scopus
  15. D. Garcia, P. Pibarot, J. G. Dumesnil, F. Sakr, and L.-G. Durand, “Assessment of aortic valve stenosis severity: a new index based on the energy loss concept,” Circulation, vol. 101, no. 7, pp. 765–771, 2000. View at Google Scholar · View at Scopus
  16. W. A. Schöbel, W. Voelker, K. K. Haase, and K.-R. Karsch, “Extent, determinants and clinical importance of pressure recovery in patients with aortic valve stenosis,” European Heart Journal, vol. 20, no. 18, pp. 1355–1363, 1999. View at Publisher · View at Google Scholar · View at Scopus
  17. D. Garcia and L. Kadem, “What do you mean by aortic valve area: geometric orifice area, effective orifice area, or Gorlin area?” Journal of Heart Valve Disease, vol. 15, no. 5, pp. 601–608, 2006. View at Google Scholar · View at Scopus
  18. K. L. Gould, “Pressure-flow characteristics of coronary stenoses in unsedated dogs at rest and during coronary vasodilation,” Circulation Research, vol. 43, no. 2, pp. 242–253, 1978. View at Google Scholar · View at Scopus
  19. P. D. Stein and H. N. Sabbah, “Turbulent blood flow in the ascending aorta of humans with normal and diseased aortic valves,” Circulation Research, vol. 39, no. 1, pp. 58–65, 1976. View at Google Scholar · View at Scopus
  20. S. Hanya, M. Sugawara, H. Inage, and A. Ishihara, “A new method of evaluating the degree of stenosis using a multisensor catheter. Application of the pressure loss coefficient,” Heart and Vessels, vol. 1, no. 1, pp. 36–42, 1985. View at Google Scholar · View at Scopus
  21. R. K. Banerjee, K. D. Ashtekar, T. A. Helmy, M. A. Effat, L. H. Back, and S. F. Khoury, “Hemodynamic diagnostics of epicardial coronary stenoses: in-vitro experimental and computational study,” BioMedical Engineering Online, vol. 7, article 24, 2008. View at Publisher · View at Google Scholar · View at Scopus
  22. R. K. Banerjee, A. Sinha Roy, L. H. Back, M. R. Back, S. F. Khoury, and R. W. Millard, “Characterizing momentum change and viscous loss of a hemodynamic endpoint in assessment of coronary lesions,” Journal of Biomechanics, vol. 40, no. 3, pp. 652–662, 2007. View at Publisher · View at Google Scholar · View at Scopus
  23. K. K. Kolli, R. K. Banerjee, S. V. Peelukhana et al., “Influence of heart rate on fractional flow reserve, pressure drop coefficient, and lesion flow coefficient for epicardial coronary stenosis in a porcine model,” The American Journal Physiology—Heart and Circulatory Physiology, vol. 300, no. 1, pp. H382–H387, 2011. View at Publisher · View at Google Scholar · View at Scopus
  24. D. Garcia, J. G. Dumesnil, L.-G. Durand, L. Kadem, and P. Pibarot, “Discrepancies between catheter and doppler estimates of valve effective orifice area can be predicted from the pressure recovery phenomenon: practical implications with regard to quantification of aortic stenosis severity,” Journal of the American College of Cardiology, vol. 41, no. 3, pp. 435–442, 2003. View at Publisher · View at Google Scholar · View at Scopus