A nurse is caring for a client with suspected pulmonary embolism who is undergoing diagnostic testing. What diagnostic test is often used as an initial screening tool for pulmonary embolism?

A) Incorrect. While pain management is important, providing supplemental oxygen to address severe shortness of breath takes priority.

B) Incorrect. Initiating anticoagulant therapy is essential but may take some time to have an effect. Oxygen therapy should be provided immediately to address the client's oxygenation.

C) Correct. Providing supplemental oxygen is the priority intervention for a client with severe

shortness of breath to ensure adequate oxygenation.

D) Incorrect. Encouraging ambulation is not appropriate in a client with severe shortness of breath. Stabilizing the client's oxygenation and condition is the immediate concern.

A) Incorrect. Chest X-rays can show certain abnormalities but are not the primary diagnostic tool for pulmonary embolism.

B) Incorrect. Electrocardiograms (ECGs) are used to assess heart rhythm and electrical activity but are not used to diagnose pulmonary embolism.

C) Incorrect. Magnetic resonance imaging (MRI) may be used in some cases, but CTPA is the preferred test for diagnosing pulmonary embolism.

D) Correct. Computed tomography pulmonary angiography (CTPA) is the gold standard for diagnosing pulmonary embolism as it can visualize blood clots in the pulmonary arteries.