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Eur J Trauma Emerg Surg · Feb 2023
Role of DOAC plasma concentration on perioperative blood loss and transfusion requirements in patients with hip fractures.
- Hannah Hofer, Daniel Oberladstätter, Christoph J Schlimp, Wolfgang Voelckel, Johannes Zipperle, Chris Lockie, Oliver Grottke, Marcin Osuchowski, and Herbert Schöchl.
- Department of Anaesthesiology and Intensive Care Medicine, AUVA Trauma Centre Salzburg, Academic Teaching Hospital of the Paracelsus Medical University, Dr. Franz Rehrl Platz 5, 5020, Salzburg, Austria.
- Eur J Trauma Emerg Surg. 2023 Feb 1; 49 (1): 165172165-172.
BackgroundThere is an ever-increasing number of hip fracture (HF) patients on direct oral anticoagulants (DOAC). The impact of DOAC plasma level prior to HF surgery on perioperative blood loss and transfusion requirements has not been investigated so far.Materials And MethodsIn this retrospective study of HF patients on DOACs admitted to the AUVA Trauma Center Salzburg between February 2015 and December 2021. DOAC plasma levels were analysed prior to surgery. Patients were categorized into four DOAC groups: Group A < 30 ng/mL, Group B 30-49 ng/mL, Group C 50-79 ng/mL, and Group D ≥ 80 ng/mL. Haemoglobin concentration was measured upon admission, prior to surgery, after ICU/IMC admission, and on day 1 and 2 post-surgery. Difference in the blood loss via drains, transfusion requirements and time to surgery were compared.ResultsA total of 155 subjects fulfilled the predefined inclusion criteria. The median age of the predominantly female patients was 86 (80-90) years. Haemoglobin concentration in Group D was lower upon admissions but did not reach statistical significance. The decrease in haemoglobin concentration over the entire observation time was comparable between groups. Blood transfusion requirements were significantly higher in Group D compared to Group A and B (p = 0.0043). Time to surgery, intra- and postoperative blood loss via drains were not different among groups.ConclusionNo strong association between the DOAC plasma levels and perioperative blood loss was detected. Higher transfusion rates in patients with DOAC levels ≥ 80 ng/mL were primarily related to lower admission haemoglobin levels. DOAC concentration measurement is feasible and expedites time to surgery.© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany.
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