Abstract
Purpose
This prospective, stratified, randomized, single-blind, placebo-controlled multicentre study investigated the safety and effectiveness of reducing blood loss and preventing venous thromboembolism (VTE) during posterior lumbar interbody fusion (PLIF) in patients with stenosis or spondylolisthesis using the combination of tranexamic acid (TXA) and rivaroxaban.
Methods
The Autar score was evaluated in patients after admission. Patients with an Autar score ≤ 10 were randomized to group A or B. Group A was the placebo-controlled group. Patients in group B were treated with 1 g TXA via intravenous injection and 1 g TXA for external use. Patients with an Autar score > 10 were randomized to group C or D. Patients in group C were treated with 10-mg rivaroxaban qd for 35 days after surgery. Patients in group D received the same treatment as those in group B intra-operatively and as those in group C post-operatively.
Results
A total of 599 patients from eight hospitals participated in this clinical trial. The total blood loss, intra-operative blood loss, and drainage volume were reduced by the administration of TXA (group A vs group B, P < 0.01; group C vs group D, P < 0.01), and the blood transfusion rate was also decreased (group A vs group B, P < 0.01; group C vs group D, P < 0.01). There were no significant differences (P > 0.05) in the VTE incidence rates among group A and group B. In patients with high-risk thrombosis, the number of patients with VTE was only three and seven after the application of rivaroxaban. Epidural haematoma was not discovered in any patients in our trial.
Conclusion
The combined application of tranexamic acid and rivaroxaban significantly reduced the amount of blood loss and the transfusion rate during PLIF surgery and avoided an increase in the probability of thrombosis and the occurrence of epidural haematoma.
Trial registration number and date of registration
ChiCTR-1800016430
2018-06-01
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Data availability
We declared that materials described in the manuscript, including all relevant raw data, will be freely available to any scientist wishing to use them for non-commercial purposes, without breaching participant confidentiality. The datasets generated during the current study are available in the Figshare repository https://figshare.com/s/b4128bd83127f2056e96.
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This retrospective, stratified, randomized, single-blind, placebo-controlled multicentre study was approved by the Medical Ethics Committee of Qilu Hospital of Shandong University (no. 2018059) and was registered in the Chinese Clinical Trial Registry (ChiCTR-1800016430).
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Zhang, L., Li, Y., Liu, D. et al. Combined use of tranexamic acid and rivaroxaban in posterior lumbar interbody fusion safely reduces blood loss and transfusion rates without increasing the risk of thrombosis—a prospective, stratified, randomized, controlled trial. International Orthopaedics (SICOT) 44, 2079–2087 (2020). https://doi.org/10.1007/s00264-020-04699-3
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DOI: https://doi.org/10.1007/s00264-020-04699-3