This preclinical study demonstrates that right coronary artery blood flow dynamics in dogs are similar to those in the left coronary artery, including significant systolic flow and responsiveness to ischemia and catecholamines.
Should not change practice; extends canine coronary flow data but leaves human applicability untested.
Phasic and mean blood flow in the right coronary artery of either the anesthetized open-chest or the conscious dog is qualitatively similar to that in the left coronary artery. Systolic flow accounts for an appreciable proportion of total flow. Both diastolic and systolic flow are increased following short periods of right coronary artery occlusion. Local injections of adrenaline and noradrenaline resulted in an increase in mean flow despite a reduction or reversal of flow in the isovolumetric phase of systole.
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Gordon Ross (1967) studied this question.
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