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 D
Explanation
A) Incorrect. Wheezing is a high-pitched whistling sound that occurs during expiration and is not associated with crackling sounds.
B) Incorrect. Rhonchi are continuous low-pitched sounds heard during both inspiration and expiration, usually due to airway obstruction.
C) Incorrect. Stridor is a high-pitched, crowing sound that occurs during inspiration and suggests upper airway obstruction.
D) Correct. Rales, also known as crackles, are crackling or popping sounds heard during inspiration and can be indicative of fluid or inflammation in the lungs, which can occur with pulmonary embolism.
Correct Answer is B
Explanation
A) Incorrect. High-intensity exercise may not necessarily reduce the risk and could potentially increase the risk if it leads to prolonged immobility afterward.
B) Correct. Maintaining a healthy weight, regular physical activity, and avoiding smoking are known lifestyle factors that can reduce the risk of pulmonary embolism.
C) Incorrect. Lifestyle changes, as mentioned, can play a role in prevention.
D) Incorrect. While stress reduction is beneficial for overall health, it is not specifically linked to the prevention of pulmonary embolism.
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