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. While surgical trauma can be a risk factor, it is not solely associated with incisions and scars.
B) Incorrect. The risk of pulmonary embolism after surgery is not low, and specific factors do contribute to the risk.
C) Correct. Prolonged immobility, surgical trauma, and changes in blood clotting are common risk factors for post-surgery pulmonary embolism.
D) Incorrect. Excessive fluid intake during recovery is not a primary risk factor for post-surgery pulmonary embolism.
Correct Answer is D
Explanation
A) Incorrect. Jaundice is a yellowing of the skin and sclera due to elevated bilirubin levels, which is not described in the client's symptoms.
B) Incorrect. Pallor refers to paleness of the skin, which is not consistent with the client's cyanosis.
C) Incorrect. Erythema refers to redness of the skin due to increased blood flow, which is not the best description of the client's symptoms.
D) Correct. Cyanosis is the bluish discoloration of the skin, lips, and nail beds due to decreased oxygen saturation in the blood, which is indicative of a severe oxygen deficit often seen in pulmonary embolism.
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