Which of the following statements about encephalitis is true?
Encephalitis is caused exclusively by bacterial infections.
Encephalitis is an inflammatory condition of the brain.
The primary symptom of encephalitis is muscle pain.
Encephalitis is always a mild condition that resolves without treatment.
The Correct Answer is B
A. Encephalitis is most often caused by viral infections, not exclusively bacterial.
B. Encephalitis is inflammation of the brain tissue, typically due to infection or autoimmune processes.
C. Muscle pain may occur but is not the primary symptom; neurological symptoms like headache, fever, confusion, and seizures are more common.
D. Encephalitis can be severe and life-threatening, requiring prompt medical treatment.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Ischemia and neuronal death – Cerebral perfusion pressure (CPP) is the pressure needed to ensure adequate blood flow to the brain. If CPP drops too low, the brain doesn't receive enough oxygen and glucose, leading to ischemia and eventually neuronal death.
B. Improved cognitive function – Low CPP results in decreased oxygen and nutrient delivery, which impairs cognitive and neurological function.
C. Increased blood flow to the brain – Low CPP means reduced blood flow, not increased.
D. Undetectable intracranial glucose levels – While glucose delivery may decrease, levels are not necessarily undetectable and this is not the primary concern with low CPP.
Correct Answer is D
Explanation
A. Jugular distention is more commonly associated with right-sided heart failure.
B. Dependent edema is typically seen in right-sided heart failure due to systemic venous congestion.
C. Nocturnal polyuria can occur in heart failure but is less specific.
D. Frothy sputum is a classic sign of left-sided heart failure due to pulmonary congestion and edema caused by impaired left ventricular function.
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