Dynamics of Collateral Circulation Following Chronic Occlusion of Coronary Arteries.

摘要: The exact mechanism by which the myocardium is nourished in presence of chronic obstruction coronary arteries still controversial.1, 2 reason for this appears to be that studies have been largely anatomical and give only qualitative data regarding collateral blood flow.3 In normal heart controversy has cleared a large extent physiological studies. majority view best expressed Wiggers:4 “The flow extremely small insufficient support contraction an area rendered [acutely] ischemic ligation main [coronary artery] branch.” However, since connections normally exist between given artery (a) other arteries,5 (b) extra-cardiac arteries6 (c) ventricular cavities,7 work Wiggers does not rule out possibility enlargement existing channels or development new connections. Indeed, it known following acute experimental occlusion ...