Coronary reserve assessment with transthoracic Doppler echocardiography
Abstract
Using our original methodic of transthoracic Doppler assessment of coronary blood flow, we examined coronary resistance dynamics during physical stress tests in 12 patients with essential arterial hypertension (Group I), and 12 patients with effort angina (Group 2). In Group 1, physical exertion was associated with vascular resistance decrease in right coronary artery (RCA) basin by 66 %, comparing to baseline; in left coronary artery (LCA) basin - by 69 %. In Group 2, these figures were -58 % and +22 %, respectively. Coronary resistance increase among Group 2patients was associated with myocardial hypoand/or akinetic areas in LKA basin. The authors conclude that their methodic of transthoracic Doppler assessment of coronary blood flow enables clinicians to adequately evaluate coronary resistance dynamics during physical stress.
About the Authors
V. V. Mazur
Тверская государственная медицинская академия
Russian Federation
Russian Federation
E. S. Mazur
Тверская государственная медицинская академия
Russian Federation
Russian Federation
References
1. Could К., Kirkfelde R., Buchi M. Coronari flow reserve as a physiologic measure of stenosis severity. J. Amer. Coll. Cardiol. 1990; 15: 456-474.
2. Report of The American Society of Echocardiography Committee on Nomenclature and Standards: Identification of myocardial wall Segments. November, 1982.
3. Schiller N.B., Shah P.M., Crawford M., et al. Recommendations for quantitation of the left ventricle by two-dimensional echocardiography. J. Am. Soc. Echocardiogr. 1989; 2: 358.
4. Врублевский А.В., Бощенко A.A., Семенова Ю.В. и др. Снижение коронарного резерва как предиктор гемодинамически значимого стенозирования передней коронарной артерии. Кардиология 2003; 7: 35-40.
5. Врублевский А.В., Бощенко А.А., Карпов Р.С. Неизвазивная ультразвуковая допплерография коронарных артерий: методические и диагностические аспекты. Визуализация в клинике 2001; 19: 50-60.
6. Kasprzak J.D., Krzeminska-Pakula M., Drozdz J., et al. Definition of normal flow parameters in proximal coronary arteries using transoesophageal Doppler Echocardiography. Echocardiography 2000; 17: 141-150.
Review
For citations:
Mazur V.V., Mazur E.S. Coronary reserve assessment with transthoracic Doppler echocardiography. Russian Journal of Cardiology. 2005;(3):67-71. (In Russ.)
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