Abstract
The risk of ventriculostomy-related hemorrhage among patients requiring antiplatelet therapy (AT) for the endovascular treatment of acutely ruptured intracranial aneurysms needed further investigation. The authors performed a systematic review and meta-analysis of the literature examining the EVD-related hemorrhage rate among patients with and without AT (controls). According to PRISMA guidelines, a comprehensive review of studies published between January 1990 and April 2018 was carried out. The authors identified series with > 5 patients reporting the EVD-associated hemorrhage rate among the AT group and the control group. Variables influencing outcomes were analyzed using a random-effects meta-analysis model. We included 13 studies evaluating 516 (with AT) and 647 (without AT) patients requiring ventriculostomy. EVD-related hemorrhage rates were higher among the AT group (125/516 = 20.9%, 95% CI = 11.9–30%, I2 = 90% vs 57/647 = 9%, 95% CI = 5.5–12.5%, I2 = 45.8%) (p < 0.0001). Major EVD-associated hemorrhage rates were low in both the AT and control group (25/480 = 4.4%, 95% CI = 1.7–7.7%, I2 = 53.9% vs 6/647 = 0.7%, 95% CI = 0.03–1.7%, I2 = 0%) (p < 0.0001). Ventriculostomy before embolization and intraprocedural AT were associated with lower rates of EVD-related bleeding (32/230 = 9.6%, 95% CI = 2.1–17.1%, I2 = 75.4% vs 6/24 = 25.1%, 95% CI = 8.8–41%, I2 = 0%) (p < 0.02). The rate of major hemorrhage was higher after dual AT (CP + ASA) compared to single AT (ASA or CP) used as an intraprocedural loading dose (13/173 = 7%, 95% CI = 3.3–10.7%, I2 = 0% vs 6/210 = 1.7%, 95% CI = 0.1–3.4%, I2 = 0%) (p < 0.009). AT during endovascular treatment of acutely ruptured intracranial aneurysms increases the risk of EVD-related hemorrhages, although most of them are small and asymptomatic. When ventriculostomy is performed before endovascular procedures requiring antiplatelet administration, the hemorrhagic risk is minimized. A single antiplatelet therapy is associated with a lower rate of major bleeding than a dual therapy.
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We thank Professor Beth De Felici for the English revision.
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Supplemental Figure 1
PRISMA diagram detailing the specifics of the systematic literature review and meta-analysis (PNG 381 kb)
Supplemental Figure 2
(A, B, C). Forest plot demonstrating the overall rate of EVD-related hemorrhage among patients with AT (Fig. A). Meta-regression showed a non-significant variation of the effect size during the analyzed period among the AT group (Fig. B). The funnel plot followed by Egger’s linear regression test excludes publication bias among the AT group (Fig. C). (PNG 197 kb)
Supplemental Figure 3
(A, B, C). Forest plot demonstrating the overall rate of EVD-related hemorrhage among patients without AT (control group) (Fig. A). Meta-regression showed a non-significant variation of the effect size during the analyzed period among the control group (Fig. B). The funnel plot followed by Egger’s linear regression test excludes publication bias among the control group (Fig. C). (PNG 84 kb)
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Cagnazzo, F., Di Carlo, D.T., Petrella, G. et al. Ventriculostomy-related hemorrhage in patients on antiplatelet therapy for endovascular treatment of acutely ruptured intracranial aneurysms. A meta-analysis. Neurosurg Rev 43, 397–406 (2020). https://doi.org/10.1007/s10143-018-0999-0
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DOI: https://doi.org/10.1007/s10143-018-0999-0