Which method of measurement is the gold standard for obtaining intracranial pressures?
Ventriculostomy
Fiberoptic catheter
Central line
Transcranial Doppler
The Correct Answer is A
A. Ventriculostomy is considered the gold standard for measuring intracranial pressure (ICP). This procedure involves placing a catheter into the brain's ventricles to directly measure the pressure inside the skull.
B. Fiberoptic catheter can also be used for ICP measurement, but ventriculostomy is more accurate and allows for drainage of cerebrospinal fluid if needed.
C. Central line is used for venous access, not for measuring ICP.
D. Transcranial Doppler is used to assess blood flow in the brain, but not for direct ICP measurement.
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Related Questions
Correct Answer is B
Explanation
A. Clouding of the lens is a sign of cataracts, not diabetic retinopathy.
B. Diabetic retinopathy is a complication of diabetes that affects the blood vessels of the retina, leading to symptoms like seeing spots, floaters, or blurred vision. It often progresses silently and can lead to blindness if not monitored.
C. Increase in intraocular pressure is a characteristic of glaucoma, not diabetic retinopathy.
D. Eye exams every 2 years is not frequent enough for diabetic patients. They should have annual eye exams to monitor for diabetic retinopathy.
Correct Answer is A
Explanation
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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