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Τετάρτη 11 Οκτωβρίου 2017

Venous Thromboembolism After Adult Lung Transplantation: A Frequent Event Associated with Lower Survival.

Background: The incidence of venous thromboembolism (VTE) after lung transplantation (LTX) varies significantly across studies. Two studies have suggested that these thrombotic events are associated with a lower posttransplant survival. Herein, we sought to determine the incidence, predictors and impact of VTE on survival after LTX at a quaternary referral center. Methods: This was a large cohort study of LTX recipients. Key outcome parameters were time to VTE after transplant and survival. Deep vein thrombosis (DVT) diagnosis required a positive ultrasound. Pulmonary embolism diagnosis required either a positive chest computed tomography angiogram or a high-probability ventilation/perfusion scan. Results: The overall incidence of VTE among 701 LTX recipients was 43.8%, of which 97.7% were DVT episodes, of which 71.3% were in the upper extremities. Predictors of VTE were prior history of DVT (HR 2.82, 95% CI 1.49 - 5.37), days in intensive care (HR 1.01, 95% CI 1.01 - 1.02), and the use of extracorporeal membrane oxygenation (HR 2.22, 95% CI 1.43 - 3.45). Importantly, VTE predicted a lower posttransplant survival (HR 1.70, 95% CI 1.28 - 2.26), when occurring within or after the first 30 days. The location of the DVT, either upper extremity or below the knee, also predicted a poor survival. Conclusions: VTE was frequent in LTX recipients and predicted a poor survival even when located in the upper extremities or below the knee. Post LTX factors were the major predictors of VTE. These data suggest that aggressive VTE screening/treatment protocols be implemented in post LTX population. Copyright (C) 2017 Wolters Kluwer Health, Inc. All rights reserved.

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