What is one of the earliest signs of increased intracranial pressure (ICP)?
Cushing triad.
Decreased level of consciousness (LOC).
Headache.
Coma.
The Correct Answer is B
Choice A rationale
Cushing triad is a late sign of increased ICP, characterized by bradycardia, hypertension, and irregular respirations, appearing after other symptoms like decreased LOC.
Choice B rationale
Decreased LOC is one of the earliest signs of increased ICP as it reflects the brain's response to pressure changes, alerting the need for immediate intervention.
Choice C rationale
Headache can be an early sign but is not as sensitive or specific as changes in LOC when assessing for increased ICP.
Choice D rationale
Coma is a late sign of significantly increased ICP, indicating severe brain dysfunction, often following initial symptoms like decreased LOC.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
Cerebrospinal fluid (CSF) does not produce cerebral neurotransmitters. Neurotransmitters are produced by neurons in the brain and nervous system.
Choice B rationale
CSF provides a protective barrier to some extent, but its primary function is not to act as a barrier to bacteria. The blood-brain barrier primarily serves this function.
Choice C rationale
CSF helps maintain a stable environment in the central nervous system but is not primarily an insulator for maintaining constant temperature. Its thermal properties are secondary.
Choice D rationale
The primary function of CSF is to cushion and protect the brain and spinal cord from mechanical injury. It also helps maintain the brain's buoyancy and provides a stable environment for the central nervous system.
Correct Answer is ["B","C","D"]
Explanation
Choice A rationale
Tachycardia is not a symptom of Cushing's triad; it is often associated with other conditions such as stress or heart problems.
Choice B rationale
Bradypnea is a hallmark of Cushing's triad, indicating decreased respiratory rate due to increased intracranial pressure.
Choice C rationale
Hypertension is a key component of Cushing's triad, caused by increased intracranial pressure leading to elevated blood pressure.
Choice D rationale
Bradycardia, or a slower than normal heart rate, is a symptom of Cushing's triad, resulting from increased pressure in the brain affecting the heart rate.
Choice E rationale
Pupillary constriction is not typically associated with Cushing's triad; it is usually related to other neurological conditions.
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