A nurse is taking care of a client who has sustained a neurologic injury with increased intracranial pressure and decreased cerebral perfusion. Which of the following will keep cerebral perfusion pressure constant?

Regulation of constriction and dilation of blood vessels in the brain

Regulation of catecholamines circulating throughout the body

Regulation of the amount of carbon dioxide exhaled

Regulation of how much blood is pumped from the heart

Answer and Explanation

The Correct Answer is A

A.   The constriction and dilation of blood vessels in the brain helps maintain appropriate cerebral blood flow and cerebral perfusion pressure (CPP) despite fluctuations in blood pressure.
B.   Catecholamines regulate other systemic body functions, but they do not directly impact cerebral perfusion pressure.
C.   Carbon dioxide exhalation can affect blood flow, but the primary regulation of CPP is through blood vessel constriction and dilation.
D.   The amount of blood pumped from the heart can impact overall blood pressure but does not directly regulate cerebral perfusion pressure.

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Correct Answer is D

Explanation

A. The BP must be lower than 180/105 mm Hg to receive fibrinolytic agents, not 130/70 mm Hg.
B. Elevated BPs are common immediately after a stroke, but drug therapy to lower BP is not initiated unless it reaches high levels (typically > 220/120 mm Hg).
C. A lower BP does not act as a protective response; maintaining a higher BP can be necessary initially after a stroke to ensure adequate cerebral perfusion.

D. If BP is 220/120 mm Hg or higher after ischemic stroke, aggressive antihypertensive therapy is initiated to reduce the risk of hemorrhagic transformation and other complications.

A. Put all used cosmetics in a plastic bag for one week to kill any bacteria before reusing B. Disinfect contact lenses by soaking in a cleaning solution for 48 hrs. C. Discard all opened or used contact lenses and les care products D. Disinfect all lesions care products with prescribed antibiotic drops for one week post infection

Correct Answer is C

Explanation

A. Put all used cosmetics in a plastic bag for one week to kill any bacteria before reusing: This is not a recommended intervention. Disinfecting or discarding the cosmetics would be better.
B. Disinfect contact lenses by soaking in a cleaning solution for 48 hrs: Bacterial conjunctivitis requires the patient to discard lenses for proper infection control.
C. Discard all opened or used contact lenses and lens care products: Discarding contaminated lenses and care products prevents reinfection.

D. Disinfect all lens care products with prescribed antibiotic drops for one-week post infection: This is not recommended as a general practice; lenses and solutions should be discarded instead.

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A nurse is taking care of a client who has sustained a neurologic injury with increased intracranial pressure and decreased cerebral perfusion. Which of the following will keep cerebral perfusion pressure constant?

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Naxlex Comprehensive Predictor Exams

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