D-dimer-albumin ratio (DAR) as a new biomarker for predicting preoperative deep vein thrombosis after geriatric hip fracture patients.

Wei Yao, Kaihua Zhang, Qiaomei Lv, Ziyang Deng, Wenbo Ding

Journal of orthopaedic surgery and research 2023 Aug 31

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Hip fractures in the elderly are complicated by preoperative deep vein thrombosis (DVT). The objective of this study is to determine the usefulness of blood-based biomarkers, particularly the D-dimer-albumin ratio (DAR), in predicting preoperative DVT. A retrospective observational study was carried out on 1149 patients from a single hospital, and subsequently validated on an additional 626 patients from a separate hospital. The aim was to evaluate the prognostic and predictive value of 10 biomarkers, with a specific emphasis on DAR, in both cohorts. The primary measure of interest was the occurrence of preoperative DVT. The ratio of D-dimer to albumin demonstrated superior predictive capability for preoperative DVT in older patients with hip fractures compared to other biomarkers (AUC = 0.677). Using the optimal cutoff point of 0.24, high DAR was significantly associated with preoperative DVT (OR 3.45, 95% CI 2.00-5.95). Notably, all the DAR definitions detailed above were successfully validated in an external, independent cohort. DAR may be a valuable biomarker for predicting preoperative DVT in elderly patients with hip fractures. © 2023. BioMed Central Ltd., part of Springer Nature.

Citation

Wei Yao, Kaihua Zhang, Qiaomei Lv, Ziyang Deng, Wenbo Ding. D-dimer-albumin ratio (DAR) as a new biomarker for predicting preoperative deep vein thrombosis after geriatric hip fracture patients. Journal of orthopaedic surgery and research. 2023 Aug 31;18(1):645