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Updated: Jun 5, 2026

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Published on: October 15, 2021
Risk of intracranial hemorrhage with direct oral anticoagulants: an updated network meta-analysis of randomized
Jiana Chen1, Qiaomei Chen1, Chengfu Guan1
1Department of Pharmacy, Nanping First Hospital Affiliated to Fujian Medical University, Nanping, Fujian, China.
Insights
Direct oral anticoagulants (DOACs) show a lower risk of intracranial hemorrhage (ICH) compared to Vitamin K Antagonists (VKAs). Dabigatran emerged as the safest anticoagulant option for reducing ICH risk.
Area of Science:
- Cardiology
- Pharmacology
- Clinical Trials
Background:
- Intracranial hemorrhage (ICH) is a serious complication of anticoagulant therapy.
- Direct oral anticoagulants (DOACs) and Vitamin K Antagonists (VKAs) are commonly used for anticoagulation.
- Comparative risk of ICH between these drug classes requires detailed analysis.
Purpose of the Study:
- To update a network meta-analysis comparing the risk of ICH between DOACs and VKAs.
- To evaluate ICH risk across different DOACs and VKAs in patients with venous thromboembolism and atrial fibrillation.
Main Methods:
- A systematic search of PubMed, EMBASE, Web of Science, and Cochrane Library up to January 5, 2026.
- Frequentist network meta-analysis of 20 randomized controlled trials involving 127,267 patients.
- Ranking of anticoagulant safety based on Surface Under the Cumulative Ranking Curves (SUCRA) for ICH risk.
Main Results:
- All DOACs demonstrated a significantly lower risk of ICH compared to VKAs.
- Specific comparisons showed higher ICH risk with VKAs versus apixaban, dabigatran, edoxaban, and rivaroxaban.
- Dabigatran ranked highest in safety (SUCRA 87.6), followed by apixaban (68.6), edoxaban (67.5), rivaroxaban (26.1), and VKAs (0.2).
Conclusions:
- DOACs represent a safer alternative to VKAs regarding the risk of intracranial hemorrhage.
- Dabigatran appears to be the safest anticoagulant option for minimizing ICH risk.
- Findings support informed clinical decision-making in anticoagulant selection.
Objective:
We updated a network meta-analysis of randomized controlled trials to compare the risk of intracranial hemorrhage (ICH) between direct oral anticoagulants (DOACs) and Vitamin K Antagonists (VKAs) in detail across Venous thromboembolism and atrial fibrillation.
Methods:
PubMed, EMBASE, Web of Science, and the Cochrane Library databases were searched up to January 5, 2026. The incidence of ICH was investigated. Using frequentist network meta-analysis, interventions that were not compared directly could be compared indirectly by the 95% confidence interval (CI), making the search results more intuitive. Based on surface under the cumulative ranking curves (SUCRA), the relative ranking probability of each group was generated.
Results:
Twenty randomised controlled trials (127,267 patients) were included. Compared with apixaban, VKAs (OR: 2.40, 95% CI: 1.62-3.56) had a higher risk of bleeding, and the difference was significant. Compared with dabigatran, rivaroxaban (OR: 1.89, 95% CI: 1.18-3.04) and VKAs (OR: 2.83, 95% CI: 2.00-3.99) had a higher risk of bleeding, and the difference was significant. Compared with edoxaban, rivaroxaban (OR: 1.60, 95% CI: 1.04-2.47) and VKAs (OR: 2.39; 95% CI: 1.81-3.17) had a higher risk of bleeding, and the difference was significant. Compared with rivaroxaban, VKAs (OR: 1.50; 95% CI: 1.08-2.07) had a higher risk of bleeding, and the difference was significant. In the ranking of the cumulative probability of ICH, dabigatran (SUCRA 87.6) had the highest safety, followed by apixaban (SUCRA 68.6), edoxaban (SUCRA 67.5), rivaroxaban (SUCRA 26.1), and VKAs (SUCRA 0.2).
Conclusions:
All DOACs had a lower risk of ICH than VKAs. Dabigatran may be the safest choice among any anticoagulant regarding risk of ICH.
Systematic Review Registration:
https://www.crd.york.ac.uk/PROSPERO/view/CRD420261336668, identifier CRD420261336668.
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