medium · MCAT chem-phys
A patient experiences a sudden increase in systemic vascular resistance (SVR).
If the heart rate remains constant, what must happen to the mean arterial pressure (MAP) according to the relationship MAP ≈ CO × SVR?
- It will increase, assuming cardiac output does not fall proportionally.
- It will decrease, as the heart will be unable to pump against the higher resistance.
- It will fluctuate as blood flow becomes turbulent throughout the systemic circuit.
- It will remain constant due to the immediate activation of the baroreceptor reflex.
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