Cerebral Vascular Resistance Calculator

Formula

The formula to calculate the Cerebral Vascular Resistance (CVR) is:

\[ CVR = \frac{MAP}{CBF} \]

Where:

\(CVR\) is the cerebral vascular resistance
\(MAP\) is the mean arterial pressure (mmHg)
\(CBF\) is the cerebral blood flow (mL/min)

What is Cerebral Vascular Resistance?

Cerebral vascular resistance (CVR) is a measure of the resistance that the blood vessels in the brain offer to blood flow. It is an important parameter in understanding cerebral hemodynamics and is influenced by factors such as blood vessel diameter, blood viscosity, and the overall health of the vascular system. High CVR can indicate potential issues such as vasoconstriction or blockages, while low CVR may suggest vasodilation or other abnormalities. Monitoring CVR is crucial in managing conditions like stroke, traumatic brain injury, and other cerebrovascular diseases.

Example Calculation

Let's assume the following values:

Mean Arterial Pressure (MAP) = 90 mmHg
Cerebral Blood Flow (CBF) = 50 mL/min

Using the formula to calculate the Cerebral Vascular Resistance:

\[ CVR = \frac{90}{50} = 1.8 \text{ mmHg/(mL/min)} \]

The Cerebral Vascular Resistance is 1.8 mmHg/(mL/min).