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. Intravenous antibiotics are not typically used as the initial treatment for pulmonary embolism. Antibiotics are used to treat bacterial infections, not blood clots.
B) Correct. Anticoagulant therapy, such as heparin or low-molecular-weight heparin, is often the initial treatment for pulmonary embolism to prevent further clot formation and reduce the risk of complications.
C) Incorrect. Emergency surgical removal of the embolism is considered in severe cases but is not the common initial treatment approach.
D) Incorrect. Placement of a chest tube for drainage is not a standard treatment for pulmonary embolism; it is used for conditions involving pleural effusion or pneumothorax.
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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