Systole has little effect on diastolic coronary artery blood flow.
نویسندگان
چکیده
منابع مشابه
Effect of atrial systole on canine and porcine coronary blood flow.
A feature of phasic coronary flow patterns recorded in conscious chronically instrumented dogs is the atrial cove--a transient depression of arterial flow that occurs during atrial systole. The association between the hemodynamic effects of atrial systole and the atrial cove was studied in anesthetized dogs and pigs with complete heart block. Many atrial coves are available for study in these p...
متن کاملDiastolic Coronary Artery Pressure-Flow Relations in the Dog
19. Tyberg JV, Yeatman LA, Parmley WW, Urschel CW, Sonnenblick EH: Effects of hypoxia on mechanism of cardiac contraction. Am J Physiol 218: 1780-1788, 1970 20. Forrester JS, Amsterdam EA, Parmley WW, Sonnenblick EH, Urschel CW: Dissociation of myocardial contractility and pump performance in hemorrhagic shock. Cardiology 57: 333-347, 1972 21. Shine KE, Douglas AM, Ricchiuti N: Ischemia in isol...
متن کاملDiastolic coronary artery pressure-flow relations in the dog.
Conscious dogs were used to investigate the relations between aortic (Pa) pressure and coronary flow (F) during individual diastoles. When the dogs were in a semibasal state, coronary pressure-flow relations were described by a family of lines, and diastolic flow was a linear function of aortic pressure. For a given perfusion pressure, higher flows were associated with lines of progressively gr...
متن کاملEffect of Coronary Blood Flow
Myocardial uptake and washout of thallium-201 (20TI) were studied in an experimental dog model in which regional blood flow to the posterior wall was varied by transient 2-minute occlusion of the circumflex coronary artery to produce transient ischemia and reactive hyperemia. Thallium-201 myocardial activity in a region of interest was determined continuously after i.v. administration by a gamm...
متن کاملMyocardial Blood Flow in Coronary Artery Disease
Sixteen patients, 10 with significant three-vessel coronary artery disease (>50% occlusion of each vessel) and six without coronary disease, had nutrient myocardial blood flow, cardiac output, pressure time/ min and arterial pressure determinations at rest, with atrial pacing and with right atrial pacing plus nitroglycerin. In the patients with coronary disease, nutrient myocardial blood decrea...
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ژورنال
عنوان ژورنال: Circulation Research
سال: 1988
ISSN: 0009-7330,1524-4571
DOI: 10.1161/01.res.62.3.443