Reactive Hyperemia After Release of Coronary Spasm
نویسندگان
چکیده
منابع مشابه
Coronary Circulation After Coronary Spasm
To examine whether acute myocardial ischemia activates the coagulation system and platelet activation in the coronary circulation, we measured plasma levels of fibrinopeptide A and j3-thromboglobulin in the coronary sinus and the aortic root simultaneously in 15 patients with coronary spastic angina before and after the left coronary spasm induced by intracoronary injection of acetylcholine and...
متن کاملRelease of adenosine in reactive hyperemia of the dog heart.
RUBQRAFAEL, ROBERT M. BERNE, AND MAKOTO KATORI. cardial hypoxia were imposed in these studies in order to liberate quantities of adenosine which could be detected by the techniques then available. However, improvements in techniques have made possible the detection of extrelnely small amounts of adenosine in coronary venous blood. The present study was undertaken to determine whether adenosine ...
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Sildenafil, a selective inhibitor of phosphodiesterase type 5, produces relaxation of isolated epicardial coronary artery segments by causing accumulation of cGMP. Because shear-induced nitric oxide-dependent vasodilation is mediated by cGMP, this study was performed to determine whether sildenafil would augment the coronary resistance vessel dilation that occurs during the high-flow states of ...
متن کاملHyaluronidase treatment of coronary glycocalyx increases reactive hyperemia but not adenosine hyperemia in dog hearts.
Because adenosine is commonly used for inducing maximal coronary hyperemia in the clinic, it is imperative that adenosine-induced hyperemia (AH) resembles coronary hyperemia that can be attained by endogenous stimuli. In the present study we hypothesized that coronary reactive hyperemia (RH) is limited compared with AH due to the presence of the glycocalyx and that the AH response is therefore ...
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The stress test, whether performed conventionally or with imaging techniques, is the most widely used method in clinical practice to demonstrate myocardial ischemia in patients with chest pain. A pharmacological stress test is usually indicated in patients who cannot do physical exercise. Although several drugs are currently available to induce ischemia, for many years dipyridamole has been the...
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ژورنال
عنوان ژورنال: Circulation
سال: 1999
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.99.4.589