Key Equations Flashcards by Himani Jayasinghe

Q

Give the equation for cardiac output.

A

Cardiac Output (CO) = Heart Rate (HR) x Stroke Volume (SR) [typically 5 L/min]

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Q

Give the equation for stroke volume.

A

Stroke Volume = End Diastolic Volume (EDV) - End Systolic Volume (ESV)

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Q

Give the equation for Ohm’s law.

A

Ohms law states: Flow = Pressure gradient/Resistance

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Q

What does the following equation calculate?

CO x Total Peripheral Resistance (TPR)

A

Blood pressure

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Q

What does the following equation calculate?

Systolic pressure - Diastolic pressure

A

Pulse pressure (PP)

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Q

What does the following equation calculate?

Diastolic pressure + 1/3 PP

A

Mean Arterial Pressure (MAP)

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Q

State Poiseuille’s equation.

A

Flow = radius^4

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