Learning Goal - Resistance = Pressure / Flow

4 important questions on Learning Goal - Resistance = Pressure / Flow

What is flow in this equation?

Flow (Q) refers to the cardiac output, measured with L/min, usually 6L/min

What is pressure in this equation?

It is the pressure gradient, difference between pressure entering the system (100 mmHg) and pressure leaving the system (0 mmHg) THUS, it is 100 mmHg

Systemic circulation vs Pulmonary circulation

Systemic circulation's R (17mmHg/min/L) is higher than pulmonary circulation's R (1.7mmHg/min/L)
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What is the equation to find pressure pulses?

Pulse pressure (PP) = systolic - diastolic (mmHg)

Normal pulse pressure is 120-80 = 40 mmHg

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