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Related Experiment Videos

Calcium antagonists for acute ischemic stroke.

J Horn1, M Limburg

  • 1Dept of Neurology, Academical Medical Center, Meibergdreef 9, Amsterdam, Netherlands, 1105 AZ. jhorn@wxs.nl

The Cochrane Database of Systematic Reviews
|May 5, 2000
PubMed
Summary
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Calcium antagonists do not reduce death or dependency after acute ischemic stroke. Evidence does not support their use in acute ischemic stroke patients.

Area of Science:

  • Neurology
  • Pharmacology
  • Clinical Trials

Background:

  • Ischemic stroke involves a sudden loss of blood supply, leading to increased calcium ions in neurons.
  • Inhibiting this calcium influx is hypothesized to protect neurons and reduce stroke-related disability.

Purpose of the Study:

  • To evaluate the efficacy of calcium antagonists in reducing death or dependency following acute ischemic stroke.
  • To investigate the impact of drug type, dosage, administration route, and timing on stroke outcomes.

Main Methods:

  • Systematic review of randomized controlled trials (RCTs) identified from a specialized register (searched March 1999).
  • Inclusion criteria: RCTs comparing calcium antagonists with control in acute ischemic stroke patients.
  • Data extraction and analysis focused on poor outcome (death or dependency), with intention-to-treat analyses where possible.

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Main Results:

  • 28 trials with 7521 patients were included. No significant effect of calcium antagonists on poor outcome or death was observed.
  • Intravenous administration was linked to worse outcomes compared to oral routes.
  • Higher doses of nimodipine and administration within 12 hours showed no benefit and were associated with poorer outcomes.

Conclusions:

  • Current evidence does not support the use of calcium antagonists for patients experiencing acute ischemic stroke.
  • Further research may be needed to clarify specific roles, if any, for these agents.