• Clive Kearon, Elie A Akl, Joseph Ornelas, Allen Blaivas, David Jimenez, Henri Bounameaux, Menno Huisman, Christopher S King, Timothy A Morris, Namita Sood, Scott M Stevens, VintchJanine R EJREHarbor-UCLA Medical Center, Torrance, CA., Philip Wells, Scott C Woller, and Lisa Moores.
• McMaster University, Hamilton, ON.
• Chest. 2016 Feb 1; 149 (2): 315352315-352.

BackgroundWe update recommendations on 12 topics that were in the 9th edition of these guidelines, and address 3 new topics.MethodsWe generate strong (Grade 1) and weak (Grade 2) recommendations based on high- (Grade A), moderate- (Grade B), and low- (Grade C) quality evidence.ResultsFor VTE and no cancer, as long-term anticoagulant therapy, we suggest dabigatran (Grade 2B), rivaroxaban (Grade 2B), apixaban (Grade 2B), or edoxaban (Grade 2B) over vitamin K antagonist (VKA) therapy, and suggest VKA therapy over low-molecular-weight heparin (LMWH; Grade 2C). For VTE and cancer, we suggest LMWH over VKA (Grade 2B), dabigatran (Grade 2C), rivaroxaban (Grade 2C), apixaban (Grade 2C), or edoxaban (Grade 2C). We have not changed recommendations for who should stop anticoagulation at 3 months or receive extended therapy. For VTE treated with anticoagulants, we recommend against an inferior vena cava filter (Grade 1B). For DVT, we suggest not using compression stockings routinely to prevent PTS (Grade 2B). For subsegmental pulmonary embolism and no proximal DVT, we suggest clinical surveillance over anticoagulation with a low risk of recurrent VTE (Grade 2C), and anticoagulation over clinical surveillance with a high risk (Grade 2C). We suggest thrombolytic therapy for pulmonary embolism with hypotension (Grade 2B), and systemic therapy over catheter-directed thrombolysis (Grade 2C). For recurrent VTE on a non-LMWH anticoagulant, we suggest LMWH (Grade 2C); for recurrent VTE on LMWH, we suggest increasing the LMWH dose (Grade 2C).ConclusionsOf 54 recommendations included in the 30 statements, 20 were strong and none was based on high-quality evidence, highlighting the need for further research.Copyright © 2016 American College of Chest Physicians. All rights reserved.

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