Clinical outcomes of patients with pulmonary embolism versus deep vein thrombosis: From the COMMAND VTE Registry.

Pulmonary embolism (PE) and deep vein thrombosis (DVT) can be considered as one clinical entity, venous thromboembolism (VTE). However, the potential differences between PE and DVT might have to be taken into consideration for the decision-making of the optimal treatment strategies. The COMMAND VTE Registry is a multicenter registry enrolling 3027 consecutive patients with acute symptomatic VTE. The current study population consisted of 1715 PE patients with or without DVT and 1312 DVT only patients. The adjusted risk for recurrent VTE was not significantly different between the PE and DVT only groups (HR 1.22, 95%CI 0.93-1.60, P = 0.15). PE patients developed recurrent VTE events more often as PE than as DVT only (62% and 38%). The adjusted excess mortality risk of PE patients relative to DVT only patients was significant (HR 1.29, 95%CI 1.11-1.50, P < 0.001), with markedly higher cumulative 30-day incidence of all-cause death in PE patients (6.4% and 1.4%, P < 0.001). The most frequent cause of deaths was cancer death in both groups, and second most frequent cause of deaths in PE patients was fatal PE, most of which developed within 30 days. The risk for recurrent VTE was not significantly different between PE and DVT, although PE was more likely to develop recurrent VTE as PE. The mortality risk of PE seemed to be higher than that of DVT, which was more remarkable in the short term due to PE death, and less remarkable in the long term due to cancer death.

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