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 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.
Correct Answer is B
Explanation
A) Incorrect. Pregnancy can increase the risk of pulmonary embolism, especially during specific periods.
B) Correct. Pregnancy is a known risk factor for pulmonary embolism due to hormonal changes, increased clotting factors, and reduced mobility during pregnancy.
C) Incorrect. While the risk may be higher during the postpartum period, it can also occur during pregnancy.
D) Incorrect. While genetics can play a role, other factors associated with pregnancy contribute to the risk of pulmonary embolism.
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