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.
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Related Questions
Correct Answer is C
Explanation
A) Incorrect. Surgery, especially major procedures, can increase the risk of pulmonary embolism.
B) Incorrect. The risk of pulmonary embolism is often higher after major surgeries, not limited to minor procedures.
C) Correct. Major surgeries and procedures carry a higher risk of pulmonary embolism due to factors like immobility and surgical trauma.
D) Incorrect. While genetics can play a role in clotting disorders, surgery remains a significant risk factor for pulmonary embolism.
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.
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