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Mechanical Rotary Atherectomy: The Effects of Microparticle Embolization on Myocardial Blood Flow and Function

Mechanical Rotary Atherectomy: The Effects of Microparticle Embolization on Myocardial Blood Flow... Mechanical rotary atherectomy is a new method for coronary revascularization that may soon serve as an alternative to current angioplasty techniques. Inherent with this procedure, however, are the potentially deleterious effects of microparticle dispersal directly into the coronary bloodstream. To study the immediate cardiac effects, debris created by rotary atherectomy of fresh human cadaver coronary arteries were subselectively injected into the left anterior descending coronary artery of six instrumented, open‐chested dogs. There were no significant changes in heart rate, left ventricular end‐diastolic and systolic blood pressures over a 2‐hour period. Minor reductions in regional myocardial function, mean coronary blood flow and coronary flow reserve were also noted. Arrhythmias did not occur. Histologic examination revealed the absence of intravascular debris. Rare foci of myonecrosis were noted in two dogs within the anteroseptal myocardial segment. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Interventional Cardiology Wiley

Mechanical Rotary Atherectomy: The Effects of Microparticle Embolization on Myocardial Blood Flow and Function

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References (18)

Publisher
Wiley
Copyright
Copyright © 1989 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0896-4327
eISSN
1540-8183
DOI
10.1111/j.1540-8183.1989.tb00759.x
Publisher site
See Article on Publisher Site

Abstract

Mechanical rotary atherectomy is a new method for coronary revascularization that may soon serve as an alternative to current angioplasty techniques. Inherent with this procedure, however, are the potentially deleterious effects of microparticle dispersal directly into the coronary bloodstream. To study the immediate cardiac effects, debris created by rotary atherectomy of fresh human cadaver coronary arteries were subselectively injected into the left anterior descending coronary artery of six instrumented, open‐chested dogs. There were no significant changes in heart rate, left ventricular end‐diastolic and systolic blood pressures over a 2‐hour period. Minor reductions in regional myocardial function, mean coronary blood flow and coronary flow reserve were also noted. Arrhythmias did not occur. Histologic examination revealed the absence of intravascular debris. Rare foci of myonecrosis were noted in two dogs within the anteroseptal myocardial segment.

Journal

Journal of Interventional CardiologyWiley

Published: Jun 1, 1989

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