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Related Experiment Video

Updated: Jun 13, 2025

Intrastriatal Injection of Autologous Blood or Clostridial Collagenase as Murine Models of Intracerebral Hemorrhage
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Subacute Neurological Improvement Predicts Favorable Functional Recovery After Intracerebral Hemorrhage: INTERACT2

Shoujiang You1, Danni Zheng2, Xiaoying Chen2

  • 1Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of SooChow University, Suzhou, China (S.Y., Y.C., C.-F.L.).

Stroke
|February 3, 2025
PubMed
Summary
This summary is machine-generated.

Subacute neurological improvement (SNI) is common in patients with intracerebral hemorrhage. Early neurological gains significantly reduce the odds of death or major disability within 90 days.

Keywords:
blood pressurecerebral hemorrhagelogistic modelsprognosisstroke

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Area of Science:

  • Neurology
  • Stroke Medicine
  • Clinical Research

Background:

  • Subacute neurological improvement (SNI) following acute intracerebral hemorrhage (ICH) is not well-characterized.
  • The prognostic value of SNI for 90-day outcomes after ICH remains unknown.

Purpose of the Study:

  • To determine the frequency of SNI after ICH.
  • To evaluate the prognostic significance of SNI on 90-day outcomes in ICH patients.

Main Methods:

  • Secondary analysis of data from the INTERACT2 trial.
  • SNI defined by NIH Stroke Scale score changes from 24 hours to 7 days post-ICH.
  • Logistic regression used to assess associations between SNI and 90-day outcomes (death/major disability, major disability, death).

Main Results:

  • Over 58% of patients experienced any SNI within 7 days of ICH.
  • Any SNI was associated with significantly reduced odds of death or major disability (49%), major disability (25%), and death (65%) at 90 days.
  • The prognostic association of SNI was consistent across subgroups and unaffected by early intensive blood pressure reduction.

Conclusions:

  • SNI is a frequent occurrence in the subacute phase after ICH.
  • The presence and degree of SNI are strong predictors of favorable 90-day outcomes, indicating reduced mortality and disability.