How do you work up a PE,”Low probability-D-dimer: If negative no further workup. Otherwise, perform u/sHigh probability-u/s: If negative, confirm with d-dimer_________________________________________________Low probability-D-dimer: If negative no further workup. Otherwise
perform spiral CTHigh probabilitySpiral CT-If negative: No further workup-If positive: Treat for PE-If inconclusive or could not perform: Leg u/s. If u/s is positive treat for PE otherwise perform V/Q scan or pulmonary angiogramNegative pulmonary aniogram essentially rules out a PE. It is a last resort as it is very contrast toxic and has a high mortality rate and its invasive”