A client with diffuse axonal injury is experiencing difficulty with respiration, heart rate, blood pressure. Which region of the brain does the nurse suspect to be affected?
Cerebral motor cortex
Brain stem
Broca's area
Occipital lobe
The Correct Answer is B
Choice A rationale: Cerebral motor cortex primarily controls voluntary movements, not autonomic functions like respiration, heart rate, and blood pressure.
Choice B rationale: The brain stem controls vital functions like respiration, heart rate, and blood pressure, so damage to this area can lead to difficulties in these functions.
Choice C rationale: Broca's area is responsible for speech production and is not directly involved in autonomic functions.
Choice D rationale: The occipital lobe is primarily associated with visual processing and perception, not autonomic functions like respiration or heart rate.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale: These lab findings, particularly concentrated urine (high specific gravity) and hyponatremia, are consistent with SIADH, where excessive ADH secretion leads to water retention and dilutional hyponatremia.
Choice B rationale: While it can affect sodium levels, Cushing's syndrome typically results in hypernatremia or normal sodium levels rather than hyponatremia.
Choice C rationale: Usually presents with hyponatremia but not specifically with high urine specific gravity or hematocrit.
Choice D rationale: DI is associated with high serum sodium and low urine specific gravity due to excessive excretion of dilute urine.
Correct Answer is C
Explanation
Choice A rationale: Kayexalate is not primarily used for phosphate reduction.
Choice B rationale: Kayexalate can have sorbitol in its formulation, which might cause diarrhea rather than constipation.
Choice C rationale: Kayexalate works as a cation-exchange resin that promotes potassium excretion in the bowels.
Choice D rationale: Kayexalate does not add potassium; it exchanges sodium for potassium in the bowels.
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