Cortical Death and Brainstem Death

Pathophysiology of Cortical Death

Cortical death is the irreversible loss of higher cerebral function while brainstem reflexes persist. This article explores its pathophysiology, clinical features, and diagnostic criteria.

6/6/20256 min read43 views
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Cortical Death vs Brainstem Death: A Pathological Perspective

Cortical Death and Brainstem Death

Pathophysiology of Cortical Death

Cortical death is characterized by irreversible loss of cerebral cortical function while brainstem activity persists. It results from extensive neuronal injury leading to loss of consciousness and cognitive functions.

Causes of Cortical Death

  • Hypoxic-ischemic encephalopathy
  • Severe traumatic brain injury
  • Neurodegenerative diseases
  • Massive cerebral infarctions

Clinical Presentation

Patients with cortical death exhibit unresponsiveness, absence of higher cognitive functions, and profound coma, but retain autonomic and brainstem reflexes.

Diagnostic Criteria

  • Electroencephalography (EEG) showing absence of cortical activity
  • Imaging demonstrating extensive cortical atrophy
  • Neurological examination confirming irreversible unconsciousness

Comparison: Brainstem Death vs. Cortical Death

Brainstem death involves irreversible cessation of all brainstem functions, including respiration, whereas cortical death retains brainstem reflexes while higher cerebral activities are lost.

Tags

#cortical death#brainstem death#neuropathology#coma#neurodegeneration

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