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MediumRespiratory MedicinePulmonary Embolismukmlamrcem sbamrcp part 1paneprescribing safety assessment

A 28-year-old man presents to the Emergency Department with sudden onset severe shortness of breath and pleuritic chest pain. He has no significant past medical history but returned from a long-haul flight 3 days ago. Observations: HR 110 bpm, RR 24/min, BP 120/80 mmHg, SpO2 93% on air. His Wells score is calculated as 5. What is the most appropriate next diagnostic step?

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