Brain injury in the term infant

Area of Science:

• Neonatal neurology
• Perinatal medicine
• Neuroscience

Background:

• Perinatal brain injury in term infants is uncommon but serious.
• Key lesions include intracranial hemorrhage and focal cerebral infarction.
• Hypoxic-ischemic cerebral injury secondary to intrapartum events is a significant concern.

Purpose of the Study:

• To review the principal lesions contributing to perinatal brain injury in term infants.
• To explore the mechanisms of brain injury, particularly secondary or reperfusion injury.
• To discuss potential neuroprotective strategies, including therapeutic hypothermia.

Main Methods:

• Review of existing literature on perinatal brain injury.
• Analysis of injury mechanisms, focusing on hypoxia-ischemia.
• Evaluation of neuroprotective strategies, with emphasis on hypothermia.

Main Results:

• Intracranial hemorrhage and focal cerebral infarction are typically identified upon clinical symptom onset (seizures, apnea), limiting prevention.
• Mechanisms of secondary or reperfusion injury in hypoxic-ischemic encephalopathy are better understood.
• Therapeutic hypothermia has demonstrated initial success in high-risk newborns.

Conclusions:

• Early detection of intracranial hemorrhage and focal cerebral infarction is challenging, hindering preventative measures.
• Secondary injury mechanisms present a target for neuroprotective interventions.
• Further research into novel neuroprotective strategies beyond hypothermia is warranted for term infants with perinatal brain injury.