A client with suspected pulmonary embolism is undergoing a ventilation-perfusion (V/Q) scan. What is the purpose of this imaging test?
To visualize the heart's electrical activity
To assess lung function and oxygenation
To measure blood clotting time
To evaluate kidney function
The Correct Answer is B
A) Incorrect. Visualizing the heart's electrical activity is typically done with an electrocardiogram (ECG), not a V/Q scan.
B) Correct. A ventilation-perfusion (V/Q) scan is used to assess lung function and oxygenation and to detect areas of the lung where blood flow and air ventilation do not match, which can indicate a pulmonary embolism.
C) Incorrect. Measuring blood clotting time is typically done using coagulation tests such as prothrombin time (PT) or activated partial thromboplastin time (aPTT).
D) Incorrect. Evaluating kidney function is not the primary purpose of a V/Q scan.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A) Incorrect. Pulmonary embolism does not directly affect the bronchial tubes or cause airway constriction.
B) Incorrect. While inflammation can occur as a response to pulmonary embolism, its primary impact is on blood flow, not the alveoli.
C) Correct. The main effect of pulmonary embolism is the disruption of blood flow to lung tissue, reducing oxygen supply.
D) Incorrect. Excessive mucus production is not a characteristic effect of pulmonary embolism.
Correct Answer is C
Explanation
A) Incorrect. An IVC filter is not used to administer anticoagulant medications but rather to prevent blood clots from reaching the pulmonary circulation.
B) Incorrect. IVC filters are not used to prevent airway obstruction.
C) Correct. The primary purpose of an IVC filter is to capture and prevent blood clots from reaching the pulmonary circulation, reducing the risk of pulmonary embolism.
D) Incorrect. IVC filters are not used to deliver oxygen directly to the lungs but rather to prevent emboli from reaching the lungs.
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