Download Echocardiography in Coronary Artery Disease by Harvey Feigenbaum (auth.), Cees A. Visser M.D., Gerard Kan PDF

By Harvey Feigenbaum (auth.), Cees A. Visser M.D., Gerard Kan M.D., Richard S. Meltzer M.D. (eds.)

Some 25 years in the past, the coronary care unit targeted excessive know-how and the acutely sick sufferers who may benefit from it in one, recognizable house. because then, that area and its technical apparatus have replaced, as has a part of its inhabitants. Acute ischemia, silent and happen, happens inside of and out of doors of the coronary care unit as ache, arrhythmia, or pump failure. Its detection and remedy require the usage of many diagnostic ideas and talents, no longer the least of that's two-dimensional Doppler echocardio­ graphy, that is gaining value. destiny advancements, in tandem with laptop expertise, may possibly upload to this value by way of permitting tissue id, spatial illustration, and Doppler circulate mapping. This e-book describes the cutting-edge for the practising clinician utilizing Doppler echocardi?graphy on the bedside of sufferers with acute ischemic manifestations of heart illness. the 1st requirement is to maneuver from the echo laboratory to the coronary care unit, emergency division, working room, or catheterization laboratory, utilizing gear suited to that objective. the second one, extra making an attempt primary is to safe strong cooper­ Ition among these treating the acutely sick sufferer and the investigator who interferes along with his probes. If winning ceeding in either, worthwhile effects will be received, seeing that echocardiography is a really delicate and particular instrument for spotting and quantifying early ischemia.

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Extra resources for Echocardiography in Coronary Artery Disease

Example text

Relationships between regional myocardial perfusion and function have been also explored [24, 25]. In one study, two grades of coronary stenosis, 70% and 90% reduction in coronary artery diameter, were produced and regional wall thickening was examined by two-dimensional echocardiography in the control state and during provoked ischemia [24]. Myocardial perfusion was determined by radiolabeled microspheres. When coronary stenosis was only moderate, systolic wall thinning could be induced neither by interventions that increased myocardial demand [isoproterenol and aortic constriction] nor by interventions that decreased perfusion [hemorrhage, nitroprusside, or nitroglycerin].

Kerber and Abboud observed striking alterations in the left ven- 36 3. Echocardiography during reversible ischemia tricular posterior wall immediately following acute circumflex coronary occlusion [2]. Normal contraction was replaced by marked dyskinetic bulging during isovolumic contraction and a rapid recoil during isovolumic relaxation, with relatively little motion during systolic ejection. Posterior endocardial velocity and excursion were markedly reduced despite modest hemodynamic changes.

Short- and long-term predictive value of admission wall motion score in acute myocardia! infarction: a cross-sectional echo cardiographic study of 345 patients. Br Heart J 1986 (in press). 3. ECHO CARDIOGRAPHY DURING REVERSIBLE ISCHEMIA IN ANIMAL MODELS NATESA G. PANDIAN In recent years, advances in echo cardiographic techniques have made echocardiography an ideal method to study the effects of myocardial ischemia on myocardial structure and function. This chapter reviews the observations made by the use of M-mode echocardiography, two-dimensional echocardiographic imaging, and Doppler echo cardiography in the study of the left ventricle during transient or acute myocardial ischemia in animal investigations.

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