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Short-Duration Hypothermia Induction in Rats using Models for Studies examining Clinical Relevance and Mechanisms
Published on: March 3, 2021
Neuroprotection and hypothermia in infants and children
Domenico Pietrini1, Marco Piastra, Ersilia Luca
1Pediatric Intensive Care Unit, University Hospital “A.Gemelli”, Università Cattolica del Sacro Cuore, Rome, Italy. d.pietrini@rm.unicatt.it
Insights
Therapeutic hypothermia (TH) effectively treats brain injuries in children, including after cardiac arrest, hypoxic-ischemic encephalopathy, and traumatic brain injury. It reduces harmful processes like inflammation and excitotoxicity, offering a vital treatment option.
Area of Science:
- Neurology
- Pediatric Critical Care
- Neuroprotection
Background:
- Brain injury is a leading cause of death in pediatric intensive care units.
- Therapeutic hypothermia (TH) is established for specific pediatric neurological emergencies.
- Emerging evidence suggests broader applications for TH in critical care settings.
Purpose of the Study:
- To review the current literature on the use of therapeutic hypothermia in pediatric critical care.
- To highlight the neuroprotective mechanisms of TH in various brain injury models.
- To discuss the potential of TH as an adjunctive therapy for refractory neurological conditions.
Main Methods:
- Literature review of studies on therapeutic hypothermia in pediatric populations.
- Analysis of clinical evidence for TH in cardiac arrest, hypoxic-ischemic encephalopathy, and traumatic brain injury.
- Examination of preclinical data on TH's impact on neuroinflammatory and apoptotic pathways.
Main Results:
- TH is beneficial for unconscious patients post-cardiac arrest with ventricular fibrillation.
- TH has demonstrated efficacy in term neonates with hypoxic-ischemic encephalopathy.
- TH shows promise in children with traumatic brain injury and superrefractory status epilepticus.
Conclusions:
- Therapeutic hypothermia mitigates critical neurodestructive processes following ischemia-reperfusion injury.
- TH offers a valuable therapeutic option, particularly when conventional treatments for elevated intracranial pressure are insufficient.
- Further research is warranted to optimize TH protocols and expand its clinical utility in pediatric neurology.
Abstract:
Brain injury is the leading cause of death in pediatric ICU. Current evidence supports the use of therapeutic hypothermia (TH) in unconscious patients after out-of-hospital cardiac arrest when the initial heart rhythm was ventricular fibrillation. TH has been proved to be also beneficial in term neonates after hypoxic-ischemic encephalopathy (HIE) and in children with traumatic brain injury (TBI). Recent reports have also investigated TH for the treatment of superrefractory status epilepticus. The clinical application of TH is based on the possibility to inhibit or lessen a myriad of destructive processes (including excitotoxicty, neuroinflammation, apoptosis, free radical production, seizure activity, blood- brain barrier disruption, blood vessel leakage) that take place in the injured tissue following ischemia-reperfusion. TH may also represent a useful tool when conventional therapy fails to achieve an effective control of elevated intracranial pressure. This review is aimed to provide an update of the available literature concerning this intriguing topic.
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