Antithrombotic Therapy for VTE Disease: Compendium and Review of CHEST Guidelines 2012-2021

The CHEST Antithrombotic Therapy for Venous Thromboembolism Disease evidencebased guidelines are now updated in a more frequent, focused manner. Guidance statements from the most recent full guideline and two subsequent updates have not been gathered into a single source. METHODS An international panel of experts with experience in prior Antithrombotic Therapy guideline development reviewed the 2012 CHEST Antithrombotic Therapy guideline and its two subsequent updates. All guideline statements, and their associated Patient, Intervention, Comparator, Outcome questions were assembled. A modified Delphi process was used to select statements considered relevant to current clinical care. The panel further endorsed minor phrasing changes to match the standard language for guidance statements using the modified GRADE format endorsed by the CHEST Guidelines Oversight Committee. The panel appended comments following statements as deemed relevant, including suggesting which statements be updated in future guidelines due to interval evidence. RESULTS We include 58 guidance statements from prior versions of the antithrombotic therapy guidelines, with updated phrasing as needed to adhere to contemporary nomenclature. Statements are classified as strong or weak recommendations based on high, moderate, and low-certainty evidence, using GRADE methodology. The panel suggests that 5 statements are no longer relevant to current practice. CONCLUSION As CHEST continues to update guidance statements relevant to antithrombotic therapy for VTE disease, this manuscript serves as a unified collection of currently relevant statements from the preceding three guidelines. Suggestions are made to update specific statements in future publications.