Which of the following diagnostic tools is used to measure ejection fraction in heart failure?
Electroencephalogram
KUB
Dexascan
Cardiac catheterization
The Correct Answer is D
A. Electroencephalogram (EEG) measures electrical activity of the brain, not cardiac function.
B. KUB (Kidneys, Ureters, Bladder) is an X-ray used to assess the urinary tract, not heart function.
C. Dexascan (DEXA) is used to measure bone density, unrelated to heart function.
D. Cardiac catheterization is an invasive diagnostic procedure that allows direct measurement of cardiac pressures and evaluation of coronary arteries. It can be used to assess cardiac function including ejection fraction, either directly or with adjunctive imaging like ventriculography. Additionally, echocardiography is commonly used non-invasively to measure ejection fraction but among the given options, cardiac catheterization is the correct answer
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Thin and flexible walls are not typical in diastolic heart failure.
B. Weak and non-contractile describes systolic heart failure.
C. In diastolic heart failure, the left ventricle becomes thickened and stiff, impairing its ability to relax and fill properly.
D. Enlarged and dilated ventricles are characteristic of systolic heart failure, not diastolic.
Correct Answer is A
Explanation
A. Mannitol is an osmotic diuretic used to reduce increased intracranial pressure, which is critical in managing Cushing’s Triad.
B. Heparin is an anticoagulant and would worsen bleeding in a subdural hematoma.
C. Warfarin is also an anticoagulant and contraindicated in bleeding.
D. Acyclovir is an antiviral, not relevant to treating increased ICP from hematoma.
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