A patient has hemorrhaged 1 liter of blood; he is diaphoretic (profuse perspiration), oliguric (decreased urinary output), and tachycardic. Physiologically, what is happening?

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Answer

The shock-induced hypotension has inactivated all autonomic receptors.

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In response to the blood loss and declining blood pressure, the baroreceptor reflex has kicked in, causing a sympathetic discharge.

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The patient has lost so much plasma protein (albumin) that fluid has shifted into his tissue spaces.

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The shock-induced low blood pressure has caused a vagal discharge.

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A patient has hemorrhaged 1 liter of blood; he is diaphoretic (profuse perspirat...

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