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A client with suspected pulmonary embolism is undergoing a ventilation-perfusion (V/Q) scan. What is the purpose of this imaging test?

A.

To visualize the heart's electrical activity

B.

To assess lung function and oxygenation

C.

To measure blood clotting time

D.

To evaluate kidney function

Answer and Explanation

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. Avoiding all physical activity is not recommended. Clients should engage in appropriate physical activity, and the level of activity may be adjusted based on their condition.

B) Incorrect. A diet high in cholesterol is not a preventive measure for blood clots; in fact, it can contribute to cardiovascular risk factors.

C) Incorrect. While excessive caffeine and alcohol intake should be avoided, eliminating them completely is not a specific preventive measure for pulmonary embolism.

D) Correct. Following the healthcare provider's recommendations for anticoagulant therapy is crucial in preventing recurrent pulmonary embolism, especially in individuals with a history of the condition.

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.

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