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MediumPulmonary EmbolismPulmonary embolism diagnosis postpartumus-usmle-step-2us-usmle-step-3us-abim

A 28-year-old G1P1, 3 days postpartum after vaginal delivery, develops new shortness of breath and pleuritic chest pain. HR 112, SpO₂ 92%. What is the best initial diagnostic test?

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