期刊
JOURNAL OF THROMBOSIS AND HAEMOSTASIS
卷 21, 期 12, 页码 3649-3657出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jtha.2023.08.013
关键词
anticoagulation; COVID-19; ECMO; heparin; resistance; sensitivity
The term heparin resistance is commonly used in clinical practice, but there is no specific criteria for its definition. This study aimed to better define the term through literature review and survey. The results showed variations in heparin dosing strategies and treatment methods, with no consensus among respondents. Future research should include weight-based definitions, monitoring assays, and target levels to improve the understanding and definition of heparin resistance.
The term heparin resistance (HR) is used by clinicians without specific criteria. We performed a literature search and surveyed our SSC membership to better define the term when applied to medical and intensive care unit patients. The most common heparin dosing strategy reported in the literature (53%) and by survey respondents (80.4%) was the use of weight-based dosing. Heparin monitoring re-sults were similar based on the proportion of publications and respondents that reported the use of anti-Xa and activated partial thromboplastin time. The most common literature definition of HR was >35 000 U/d, but no consensus was re-ported among survey respondents regarding weight-based and the total dose of heparin when determining resistance. Respondent consensus on treating HR included antithrombin supplementation, direct thrombin inhibitors, or administering more heparin as the strategies available for treating HR. A range of definitions for HR exist. Given the common use of heparin weight-based dosing, future publica-tions employing the term HR should include weight-based definitions, monitoring assay, and target level used. Further work is needed to develop a consensus for defining HR.
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