Prognostic significance of delayed intraventricular haemorrhage in the INTERACT studies

INTERACT Investigators, Tom J Moullaali, Shoichiro Sato, Xia Wang, Alejandro A Rabinstein, Hisatomi Arima, Cheryl Carcel, Guofang Chen, Thompson Robinson, Emma Heeley, Edward Chan, Candice Delcourt, Christian Stapf, Charlotte Cordonnier, Richard I Lindley, John Chalmers, Craig S Anderson

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

BACKGROUND AND PURPOSE: Intraventricular extension of intracerebral haemorrhage (ICH) predicts poor outcome, but the significance of delayed intraventricular haemorrhage (dIVH) is less well defined. We determined the prognostic significance of dIVH in the Intensive Blood Pressure Reduction in Acute Cerebral Haemorrhage Trials (INTERACT 1 and 2).

METHODS: Pooled analyses of the INTERACT CT substudies-international, multicentre, prospective, open, blinded end point, randomised controlled trials of patients with acute spontaneous ICH and elevated systolic blood pressure (SBP)-randomly assigned to intensive (<140 mm Hg) or guideline-based (<180 mm Hg) SBP management. Participants had blinded central analyses of baseline and 24 h CTs, with dIVH defined as new intraventricular haemorrhage (IVH) on the latter scan. Outcomes of death and major disability were defined by modified Rankin Scale scores at 90 days.

RESULTS: There were 349 (27%) of 1310 patients with baseline IVH, and 107 (11%) of 961 initially IVH-free patients who developed dIVH. Significant associations of dIVH were prior warfarin anticoagulation, high (≥15) baseline National Institutes of Health Stroke Scale score, larger (≥15 mL) ICH volume, greater ICH growth and higher achieved SBP over 24 h. Compared with those who were IVH-free, dIVH had greater odds of 90-day death or major disability versus initial IVH (adjusted ORs 2.84 (95% CI 1.52 to 5.28) and 1.87 (1.36 to 2.56), respectively (p trend <0.0001)).

CONCLUSIONS: Although linked to factors determining greater ICH growth including poor SBP control, dIVH is independently associated with poor outcome in acute small to moderate-size ICH.


Original languageEnglish
Pages (from-to)19-24
Number of pages6
JournalJournal of Neurology, Neurosurgery & Psychiatry
Issue number1
Early online date8 Jan 2016
Publication statusPublished - Jan 2017

Keywords / Materials (for Non-textual outputs)

  • Aged
  • Cerebral Hemorrhage
  • Cerebral Ventricles
  • Disability Evaluation
  • Female
  • Hemorrhage
  • Humans
  • Magnetic Resonance Imaging
  • Male
  • Neuroimaging
  • Prognosis
  • Randomized Controlled Trials as Topic
  • Time Factors
  • Journal Article
  • Multicenter Study


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