HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Personal Folders Download to citation manager Author home page(s): Thomas J. Hinkamp Roque Pifarré Permission Requests Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Kim, S. Y. Articles by Pifarré, R. Search for Related Content PubMed PubMed Citation Articles by Kim, S. Y. Articles by Pifarré, R.

Ann Thorac Surg 1995;59:981-989
© 1995 The Society of Thoracic Surgeons

Effect of an Inelastic Aortic Synthetic Vascular Graft on Exercise Hemodynamics

Departments of Thoracic and Cardiovascular Surgery, Cardiology, and Radiology, Loyola University Medical Center, Maywood, Illinois

Accepted for publication January 10, 1995.

This study compared aortic input impedance characteristics between patients with aortic interposition Dacron grafts placed for traumatic aortic injury and normal age-matched control subjects. All subjects were examined at rest and after treadmill exercise. Magnetic resonance imaging was conducted to rule out anatomic (stenosis) effects. Exercise increased characteristic impedance (ie, reduced aortic distensibility) by 29% and decreased total systemic arterial compliance by 21% in the patient group, whereas the normal control group showed insignificant change in these variables after exercise. Peripheral pressure wave reflection was reduced substantially with exercise (27%) in the control group, with much less reduction observed in the patient group. These abnormal vascular hemodynamics were associated with significantly high cardiac energetic costs in the patient group. A plausible explanation for the observed differences lies in the exaggerated vascular impedance mismatch between compliant aorta and inelastic graft, when cardiac output increases dramatically.

This article has been cited by other articles:

				H. H. Sievers Reflections on reduction ascending aortoplasty's liveliness J. Thorac. Cardiovasc. Surg., October 1, 2004; 128(4): 499 - 501. [Full Text] [PDF]

				S. Morita, T. Asou, I. Kuboyama, Y. Harasawa, K. Sunagawa, and H. Yasui Inelastic vascular prosthesis for proximal aorta increases pulsatile arterial load and causes left ventricular hypertrophy in dogs J. Thorac. Cardiovasc. Surg., October 1, 2002; 124(4): 768 - 774. [Abstract] [Full Text] [PDF]

				R. Bauernschmitt, S. Schulz, A. Schwarzhaupt, U. Kiencke, C.-F. Vahl, R. Lange, and S. Hagl Simulation of arterial hemodynamics after partial prosthetic replacement of the aorta Ann. Thorac. Surg., March 1, 1999; 67(3): 676 - 682. [Abstract] [Full Text] [PDF]

				M. Karamanoglu and M. P. Feneley On-line Synthesis of the Human Ascending Aortic Pressure Pulse From the Finger Pulse Hypertension, December 1, 1997; 30(6): 1416 - 1424. [Abstract] [Full Text]

				S. Y. Kim, D. E. Euler, W. R. Jacobs, A. Montoya, H. J. Sullivan, V. A. Lonchyna, and R. Pifarre Arterial Impedance in Patients During Intraaortic Balloon Counterpulsation Ann. Thorac. Surg., March 1, 1996; 61(3): 888 - 894. [Abstract] [Full Text]

				L. L. Demer A Skeleton in the Atherosclerosis Closet Circulation, October 15, 1995; 92(8): 2029 - 2032. [Full Text]