Acute symptomatic pulmonary embolism associated with long haul air travel to Sydney.

The association between air travel and pulmonary embolism (PE) is recognized, but the absolute risk has not been quantified. Due to its geographical isolation, more than 50% of international travelers arrive at Sydney airport after a flight of'at least 9 hours. Patients who become acutely unwell upon disembarkation are taken to one of two hospitals.