Optimal Therapy for Unstable Pulmonary Embolism

There are no randomized controlled trials of thrombolytic therapy, pulmonary embolectomy, or inferior vena cava (IVC) filters in patients with unstable pulmonary embolism (those in shock or on ventilator support). Yet, there are many investigations of these treatments based on retrospective cohort studies using administrative data from large government and commercial databases. Extensive data from these cohort studies showed that thrombolytic therapy resulted in the lowest in-hospital all-cause mortality.