system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A previously healthy 35-year-old woman comes to the emergency department because of a sudden onset of difficulty breathing that began when she woke up that morning. She also reports a dry cough and chest pain that is worse with inspiration. She does not smoke, drink alcohol, or use illicit drugs. Her only medication is an oral contraceptive. Her temperature is 38°C (100.4°F), pulse is 90/min, respirations are 22/min, and blood pressure is 120/70 mm Hg. Oxygen saturation is 93% on room air. Physical examination is unremarkable. An ECG shows non-specific ST segment changes. An x-ray of the chest shows no abnormalities. In addition to oxygen supplementation, which of the following is the most appropriate next step in management?
assistant
Measure fibrin degradation products