Which is the term used to describe the amount of additional blood flow that can be supplied to the heart above baseline blood flow?

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Which is the term used to describe the amount of additional blood flow that can be supplied to the heart above baseline blood flow?

• [A] Coronary flow reserve
• [B] Cardiac Single-photon Emission Computed Tomography Imaging
• [C] Contrast flow phenomenon
• [D] Myocardial blood flow

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Coronary flow reserve

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• Coronary flow reserve (CFR) is the term used to describe the amount of additional blood flow that can be supplied to the heart above baseline blood flow.
• The absence of CFR implies maximal vasodilatation of the resistance vessels at rest and an inability to further increase MBF.

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How is coronary flow reserve calculated?

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Calculate your coronary flow reserve, divide your coronary artery’s maximum blood flow by your at-rest blood flow.

Coronary artery’s maximum blood flow / coronary artery’s at-rest blood flow

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A normal CFR is considered to be greater than 2.0 and in most patients should be somewhere between 3 and 5. 

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