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Progress in clinical neurosciences: sepsis-associated encephalopathy: evolving concepts
1Department of Physiology, University of Western Ontario, London, Ontario, Canada.
Summary
Sepsis frequently causes brain dysfunction, known as sepsis-associated encephalopathy. This condition, marked by EEG changes, can range from temporary to permanent brain damage, with emerging research highlighting therapeutic mechanisms.
Area of Science:
- Neuroscience
- Critical Care Medicine
- Pathophysiology
Background:
- Systemic sepsis is a common cause of brain dysfunction.
- Sepsis-associated encephalopathy (SAE) presents as a diffuse cerebral dysfunction.
- SAE severity correlates with electroencephalogram (EEG) abnormalities and multi-organ dysfunction.
Purpose of the Study:
- To review the mechanisms underlying sepsis-associated encephalopathy.
- To discuss the clinical presentation and diagnostic features of SAE.
- To explore potential therapeutic targets for SAE.
Main Methods:
- Literature review of recent research on SAE.
- Analysis of clinical and experimental studies on sepsis and brain dysfunction.
- Synthesis of findings on pathophysiological mechanisms of SAE.
Main Results:
- SAE clinically resembles metabolic encephalopathies with sparing of the brainstem.
- Progressive EEG abnormalities in SAE often precede or parallel other organ dysfunctions.
- Several non-mutually exclusive mechanisms contributing to SAE have been identified.
Conclusions:
- Sepsis-associated encephalopathy is a significant neurological complication of sepsis.
- Understanding the underlying mechanisms is crucial for developing effective treatments.
- Emerging research offers potential therapeutic avenues for managing SAE.