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Diagnosis of brain death
1Institute of Neurology and Neurosurgery, Department of Clinical Neurophysiology, Havana, Cuba.
Neurology International
|May 18, 2011
Summary
Brain death (BD) is irreversible neurological stoppage, diagnosed by coma, absent reflexes, and apnea. It results from elevated intracranial pressure or intrinsic brain injury, leading to permanent neuronal damage.
Area of Science:
- Neurology
- Critical Care Medicine
Background:
- Brain death (BD) signifies irreversible cessation of all brain functions.
- Understanding BD is crucial for clinical diagnosis and organ donation protocols.
Purpose of the Study:
- To review the diagnostic methodology for brain death.
- To elucidate the pathophysiological mechanisms leading to brain death.
Main Methods:
- Review of existing literature on brain death diagnosis and pathophysiology.
- Analysis of clinical criteria for irreversible neurological stoppage.
Main Results:
- Brain death results from complete and irreversible neurological stoppage, characterized by coma, absent brainstem reflexes, and apnea.
- Common mechanisms include elevated intracranial pressure compromising cerebral perfusion and intrinsic neuronal injury.
- Irreversible loss of cardio-circulatory and respiratory functions can lead to brain death if ischemia is prolonged.
Conclusions:
- Brain death diagnosis relies on identifying irreversible loss of all brain functions.
- Accurate diagnosis requires understanding the underlying mechanisms of cerebral insult.
