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Bispebjerg Hospital - a part of Copenhagen University Hospital
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Outcomes in Antiplatelet-Associated Intracerebral Hemorrhage in the TICH-2 Randomized Controlled Trial

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  • Zhe Kang Law
  • Michael Desborough
  • Ian Roberts
  • Rustam Al-Shahi Salman
  • Timothy J England
  • David J Werring
  • Thompson Robinson
  • Kailash Krishnan
  • Robert Dineen
  • Ann Charlotte Laska
  • Nils Peters
  • Juan Jose Egea-Guerrero
  • Michal Karlinski
  • Hanne Christensen
  • Christine Roffe
  • Daniel Bereczki
  • Serefnur Ozturk
  • Jegan Thanabalan
  • Rónán Collins
  • Maia Beridze
  • Philip M Bath
  • Nikola Sprigg
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Background Antiplatelet therapy increases the risk of hematoma expansion in intracerebral hemorrhage (ICH) while the effect on functional outcome is uncertain. Methods and Results This is an exploratory analysis of the TICH-2 (Tranexamic Acid in Intracerebral Hemorrhage-2) double-blind, randomized, placebo-controlled trial, which studied the efficacy of tranexamic acid in patients with spontaneous ICH within 8 hours of onset. Multivariable logistic regression and ordinal regression were performed to explore the relationship between pre-ICH antiplatelet therapy, and 24-hour hematoma expansion and day 90 modified Rankin Scale score, as well as the effect of tranexamic acid. Of 2325 patients, 611 (26.3%) had pre-ICH antiplatelet therapy. They were older (mean age, 75.7 versus 66.5 years), more likely to have ischemic heart disease (25.4% versus 2.7%), ischemic stroke (36.2% versus 6.3%), intraventricular hemorrhage (40.2% versus 27.5%), and larger baseline hematoma volume (mean, 28.1 versus 22.6 mL) than the no-antiplatelet group. Pre-ICH antiplatelet therapy was associated with a significantly increased risk of hematoma expansion (adjusted odds ratio [OR], 1.28; 95% CI, 1.01-1.63), a shift toward unfavorable outcome in modified Rankin Scale (adjusted common OR, 1.58; 95% CI, 1.32-1.91) and a higher risk of death at day 90 (adjusted OR, 1.63; 95% CI, 1.25-2.11). Tranexamic acid reduced the risk of hematoma expansion in the overall patients with ICH (adjusted OR, 0.76; 95% CI, 0.62-0.93) and antiplatelet subgroup (adjusted OR, 0.61; 95% CI, 0.41-0.91) with no significant interaction between pre-ICH antiplatelet therapy and tranexamic acid (P interaction=0.248). Conclusions Antiplatelet therapy is independently associated with hematoma expansion and unfavorable functional outcome. Tranexamic acid reduced hematoma expansion regardless of prior antiplatelet therapy use. Registration URL: https://www.isrctn.com; Unique identifier: ISRCTN93732214.

Original languageEnglish
Article numbere019130
JournalJournal of the American Heart Association
Volume10
Issue number5
Pages (from-to)1-12
Number of pages12
ISSN2047-9980
DOIs
Publication statusPublished - Feb 2021

    Research areas

  • Antiplatelet, Cerebral hemorrhage, Hematoma expansion, Randomized controlled trial, Tranexamic acid

ID: 66519825