Cardiovascular changes during hemorrhage

Summary of Cardiovascular changes during hemorrhage
When blood loss is high, arterial pressure rapidly decreases, followed by a series of compensatory cardiovascular responses to try to restore arterial pressure to normal and sustain perfusion to critical organs.

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Cardiovascular changes during hemorrhage

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Cardiovascular changes during hemorrhage

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Cerebral ischemia due to hemorrhage will cause a local (increase/decrease) in PCO2 and a decrease in pH, which activate chemoreceptors to increase sympathetic outflow and peripheral vasoconstriction in order to maintain cerebral perfusion.