A 28-year-old woman presents to the emergency department with two days of right-sided chest pain that is worse on deep inspiration. She takes a combined oral contraceptive pill and is recovering from an upper respiratory tract infection with a persistent cough. She has had no surgery or immobilisation, has not travelled recently, and has no personal or family history of venous thromboembolism. Her temperature is 36.9°C, heart rate 88/min, respiratory rate 16/min and oxygen saturation 98% on room air; both calves are soft and non-tender. Which one of the following is the most appropriate next step in investigation?
More from AMC
See allA 17-year-old girl presents six hours after a deliberate ingestion of tablets taken from the family bathroom cabinet. She complains of nausea, repeated vomiting…
A 28-year-old woman is brought in by ambulance 90 minutes after being found drowsy next to an empty box of amitriptyline. Her Glasgow Coma Scale score is 12, he…
A 21-year-old man collapses at the 14 km mark of a city fun run on a 34°C day. In the trackside medical tent he is confused and agitated with a Glasgow Coma Sca…
A 26-year-old backpacker is snorkelling off Port Douglas in far north Queensland in December when she feels a mild sting on her forearm, leaving only faint redn…
A 34-year-old man in suburban Sydney felt a sharp pinprick on the back of his hand while moving pot plants stacked against the house. Over the next two hours he…