What diagnostic tests should be done immediately if meningitis is suspected?
Blood cultures and CT scan
Stool culture and ultrasound
Urine analysis and chest X-ray
ECG and pulmonary function tests
The Correct Answer is A
A. Blood cultures help identify the causative organism, and a CT scan is often performed before lumbar puncture to rule out increased intracranial pressure or mass effect, which can contraindicate lumbar puncture.
B. Stool culture and ultrasound are unrelated to meningitis diagnosis.
C. Urinalysis and chest X-ray do not diagnose meningitis.
D. ECG and pulmonary function tests are not relevant for meningitis evaluation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Increased systemic blood pressure – While systemic vasoconstriction may occur to maintain perfusion, it is a result of compensatory mechanisms like RAAS, not a primary mechanism leading to fluid retention and edema.
B. Renin-angiotensin-aldosterone activation – RAAS leads to:
Sodium and water retention via aldosterone
Vasoconstriction via angiotensin II
These changes increase intravascular volume, contributing to fluid overload and edema.
C. Ventricular hypertrophy – This is a structural adaptation to increased workload (pressure overload), not directly responsible for fluid retention.
D. Ventricular dilation – Dilation occurs as a result of chronic volume overload, not as a compensatory mechanism causing fluid retention.
Correct Answer is D
Explanation
A. Blood urea nitrogen assesses kidney function but is less directly related to digoxin toxicity risk.
B. Creatinine also reflects kidney function but is not the highest priority in this context.
C. Hemoglobin levels are not directly related to digoxin administration.
D. Potassium levels are critical to review because hypokalemia increases the risk of digoxin toxicity, and hyperkalemia can also affect the drug's efficacy. Monitoring potassium is essential before giving digoxin.
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