منابع مشابه
Adenosine metabolism in canine myocardial reactive hyperemia.
In pentobrabital-anesthetized open chest dogs, myocardial adenosine content is elevated by 5 or 15 seconds of left coronary artery occlusion and falls exponentially to control levels during reactive hyperemia. The rate constants for adenosine dissipation are (mean +/- SEM): -0.08 +/- 0.01 and -0.034 +/- 0.007 sec-1 after 5- and 15-second occlusion, respectively. Kinetic analysis of the reactive...
متن کاملMyocardial Reactive Hyperemia in the Unanesthetized Dog.
OLSON, RAY A., AND DONALD E. GREGG Myocardial reactive hyperemia in the unanesthetised dog. Am. J. Physiol 208(2): 224230. I g65.-Studies of myocardial reactive hyperemia in dogs 5-24 days after the implantation of electromagnetic flowmeters on coronary artery branches reveal that the duration of occlusion and the control flow rate are independent determinants of the volume of reactive hyperemi...
متن کاملDemonstration of Myocardial Reactive Hyperemia in Man
one subject with isolated, fixed coronary obstruction. Three subjects with variant angina had short episodes of ischemic ST-segment elevation that lasted 20-100 seconds. Thallium scintigrams demonstrated excess uptake in regions judged to be ischemic by angiographic and electrocardiographic criteria. Two subjects, one with variant angina and the other with a fixed coronary lesion, had prolonged...
متن کاملIntracoronary adenosine deaminase reduces canine myocardial reactive hyperemia.
We employed intracoronary infusions of calf intestine adenosine deaminase (ADA) to test the hypothesis that adenosine regulates coronary blood flow during myocardial reactive hyperemia (RH). Infusions of 4.5 U ADA/min per kg body weight into the left circumflex coronary artery of 10 open-chest dogs reversibly reduced repayment of flow debt by 30-39% (P less than 0.05) following 5-, 10-, 15-, 20...
متن کاملReduction of myocardial reactive hyperemia during oxygen breathing in dogs.
In 7 open-chest anesthetized mongrel dogs the left anterior descending coronary artery was occluded for 20 sec. Myocardial reactive hyperemia was recorded during air and oxygen breathings. The excess blood flow during the reactive hyperemia was smaller and the duration of the reactive hyperemia was shorter during oxygen breathing than during air breathing. It is suggested that the reduction of ...
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ژورنال
عنوان ژورنال: Circulation Research
سال: 1975
ISSN: 0009-7330,1524-4571
DOI: 10.1161/01.res.37.3.263