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 B
Explanation
A) Incorrect. This description is more aligned with a lung infection, such as pneumonia, not pulmonary embolism.
B) Correct. Pulmonary embolism is typically caused by a blood clot that travels to the lungs and obstructs the pulmonary arteries.
C) Incorrect. Prolonged exposure to environmental toxins is not the primary cause of pulmonary embolism.
D) Incorrect. Chronic inflammation in the airways is characteristic of conditions like chronic obstructive pulmonary disease (COPD) but not pulmonary embolism.
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