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Related Experiment Videos

Delayed cerebral ischaemia: the pathological substrate

G Neil-Dwyer1, D A Lang, B Doshi

  • 1Department of Neurosurgery, Southampton University Hospitals, London, U.K.

Acta Neurochirurgica
|January 1, 1994
PubMed
Summary
This summary is machine-generated.

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Histological analysis revealed that ischemic lesions in the brain cortex and hypothalamus are common after aneurysmal subarachnoid hemorrhage. These changes correlate with blood pressure control and are linked to diffuse microangiopathy.

Area of Science:

  • Neurology
  • Pathology

Background:

  • Aneurysmal subarachnoid hemorrhage (aSAH) is known to cause ischemic complications in the brain cortex and hypothalamus.
  • Histological evidence of these complications is crucial for understanding long-term patient outcomes.

Purpose of the Study:

  • To investigate the prevalence and characteristics of histological ischemic changes in the cortex and hypothalamus following aSAH.
  • To explore the relationship between these lesions and factors such as systemic blood pressure control and patient survival time.

Main Methods:

  • Histological examination of cortical and hypothalamic tissue from 53 and 48 deceased patients, respectively, who experienced aSAH.
  • Correlation analysis of lesion presence with clinical data, including blood pressure control and mode of death.

Related Experiment Videos

Main Results:

  • Cortical ischemic lesions were found in 41 of 53 patients, more frequently in those with impaired blood pressure control (p = 0.0004) and gradual death (p = 0.0003).
  • Hypothalamic lesions occurred in 24 of 48 patients, often associated with widespread cortical changes (p = 0.0007).
  • A strong association was observed between moderate/severe cortical lesions and the presence of hypothalamic lesions.

Conclusions:

  • Diffuse microangiopathy developing post-aSAH is the likely cause of slow-onset cortical and hypothalamic ischemic changes.
  • Widespread cortical lesions may contribute to the cognitive and psychosocial deficits observed in aSAH survivors.