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What factors influence myocardial oxygen supply and demand?

April 26, 2017DEMAND factors influence myocardial oxygen supply

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What factors influence myocardial oxygen supply and demand?

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Myocardial supply is influenced by: coronary blood flow (diastolic time, blood pressure and blood vessel diameter) and the percentage of oxygen in blood. Remember, the more the diastolic time, the better for heart muscle because during diastolic time, the heart is filling with oxygenated blood. Myocardial demand is influenced by: heart rate, blood pressure and contractility.