A 70-year-old man walks into your primary care clinic with s…
A 70-year-old man walks into your primary care clinic with sudden severe shortness of breath and near-syncope that started 30 minutes ago. He had a hip fracture repair 10 days ago and has been mostly sedentary at home. Vital signs: BP 78/44, HR 128, RR 30, SpO2 84% on room air. He is pale, diaphoretic, and speaking in single words. Lung exam is clear. You suspect a massive pulmonary embolism. What is the most appropriate next step in evaluation and management in the primary care setting?