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 B
Explanation
A. The apical pulse should be measured for a full 1 minute, not just 30 seconds, before administering digoxin.
B. Nausea, vomiting, and anorexia are early signs of digoxin toxicity, so evaluating the client for these symptoms is appropriate.
C. Clients on digoxin should consume potassium-rich foods to prevent hypokalemia, which increases the risk of digoxin toxicity.
D. Digoxin is usually withheld if the heart rate is below 60 bpm, not above 100 bpm. Tachycardia (heart rate >100) is not a reason to withhold digoxin.
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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