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Laterality does not influence early mortality in MCA ischemic stroke.

Ignacio Mateo1, Ana Pinedo, Ines Escalza

  • 1Servicio de Neurologia, Hospital de Galdacano, 48960 Galdacano, Vizcaya, Spain.

Clinical Neurology and Neurosurgery
|November 22, 2005
PubMed
Summary

Stroke laterality did not significantly impact mortality in the acute phase. Key factors influencing survival in middle cerebral artery infarcts include infarct size, infection, age, and comorbidities.

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Area of Science:

  • Neuroscience
  • Cardiology
  • Neurology

Background:

  • The insula plays a role in autonomic system and cardiac function control.
  • Differential hemispheric participation in brain function may affect mortality after ischemic stroke.

Purpose of the Study:

  • To investigate if infarct laterality influences mortality in the acute phase of middle cerebral artery (MCA) ischemic infarcts.
  • To identify factors associated with higher mortality in patients with MCA infarcts.

Main Methods:

  • Retrospective analysis of mortality during initial hospitalization.
  • Study included 504 consecutive, unselected patients with MCA ischemic infarcts.
  • Patients were categorized based on infarct location: right (220) or left (284) hemisphere.

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Main Results:

  • Infarct size, nosocomial respiratory infection, advanced age, and history of diabetes mellitus or COPD were associated with increased mortality.
  • No significant difference in mortality was observed between right and left MCA infarcts.

Conclusions:

  • Infarct laterality does not significantly influence stroke mortality during the acute admission period.
  • Prognosis is more strongly linked to infarct severity and patient comorbidities than hemispheric location.