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Neonatal encephalopathy — Clinical Guidelines

Overview

Neonatal encephalopathy (NE) encompasses a spectrum of neurologic dysfunction in neonates, often resulting from perinatal hypoxia-ischemia, leading to multi-organ dysfunction and potential long-term complications including cerebral palsy 1 3 6.

Diagnosis

Clinical Presentation: Abnormal neurologic function within the first few days of life, including altered consciousness, seizures, and respiratory distress 1 12.

Recommended Tests:

- Electroencephalography (EEG): To assess severity and monitor progression 6. - Blood Gas Analysis: To evaluate acid-base status and oxygenation 8. - Imaging: MRI or CT scans to identify structural brain injury 1 13.

Grading Systems: Use of multi-organ dysfunction scoring systems like the MODE Score to quantify severity across multiple systems 3.

Management

First-Line Treatments:

- Therapeutic Hypothermia: Induced cooling to 33-34°C for 72 hours to reduce brain injury 6 9.

Adjunctive Treatments:

- Magnesium Sulphate: Administered antenatally for fetal neuroprotection, with 60% of facilities reporting its use 5. - Sedation and Analgesia: Careful management during therapeutic hypothermia to maintain adequate sedation and monitor heart rate 9.

Special Populations

Pregnancy Complications: Antenatal conditions like maternal diabetic ketoacidosis can predispose to NE and severe cerebral injury 4.

Preterm Infants: Preterm infants are at higher risk for severe NE and associated multi-organ dysfunction 4 14.

Key Recommendations

Implement Therapeutic Hypothermia for neonates with moderate to severe NE to reduce mortality and morbidity (Evidence: Strong 6).

Utilize Multi-Organ Dysfunction Scoring Systems like the MODE Score to better quantify and manage complications (Evidence: Moderate 3).

Consider Antenatal Magnesium Sulphate Administration in high-risk pregnancies to potentially mitigate NE risk (Evidence: Moderate 5).

Monitor and Manage Sedation Carefully during therapeutic hypothermia to ensure adequate sedation and hemodynamic stability (Evidence: Weak 9).

Screen High-Risk Pregnancies for potential perinatal asphyxia risk factors to enable early intervention (Evidence: Moderate 8).

References

1 Bitar L, Leon RL, Liu YL, Kota S, Chalak LF. Multi-organ dysfunction across the neonatal encephalopathy spectrum. Pediatric research 2025. link 2 Falsaperla R, Vitaliti G, Sciacca M, Tardino L, Marino SD, Marino S et al.. Neonatal neurologic emergencies requiring access to paediatric emergency units: a retrospective observational study. Scientific reports 2022. link 3 Sweetman DU, Strickland T, Isweisi E, Kelly L, Slevin MT, Donoghue V et al.. Multi-organ dysfunction scoring in neonatal encephalopathy (MODE Score) and neurodevelopmental outcomes. Acta paediatrica (Oslo, Norway : 1992) 2022. link 4 Mandelbaum DE, Arsenault A, Stonestreet BS, Kostadinov S, de la Monte SM. Neuroinflammation-Related Encephalopathy in an Infant Born Preterm Following Exposure to Maternal Diabetic Ketoacidosis. The Journal of pediatrics 2018. link 5 Chollat C, Le Doussal L, de la Villéon G, Provost D, Marret S. Antenatal magnesium sulphate administration for fetal neuroprotection: a French national survey. BMC pregnancy and childbirth 2017. link 6 Lemmon ME, Boss RD, Bonifacio SL, Foster-Barber A, Barkovich AJ, Glass HC. Characterization of Death in Neonatal Encephalopathy in the Hypothermia Era. Journal of child neurology 2017. link 7 Muraskas JK, Kelly AF, Nash MS, Goodman JR, Morrison JC. The role of fetal inflammatory response syndrome and fetal anemia in nonpreventable term neonatal encephalopathy. Journal of perinatology : official journal of the California Perinatal Association 2016. link 8 Herrera CA, Silver RM. Perinatal Asphyxia from the Obstetric Standpoint: Diagnosis and Interventions. Clinics in perinatology 2016. link 9 Gill H, Thoresen M, Smit E, Davis J, Liu X, Dingley J et al.. Sedation management during therapeutic hypothermia for neonatal encephalopathy: atropine premedication for endotracheal intubation causes a prolonged increase in heart rate. Resuscitation 2014. link 10 Morgan MA, Hankins GD, Zinberg S, Schulkin J. Neonatal encephalopathy and cerebral palsy revisited: the current state of knowledge and the impact of american college of obstetricians and gynecologists task force report. Journal of perinatology : official journal of the California Perinatal Association 2005. link 11 Hankins GD, Erickson K, Zinberg S, Schulkin J. Neonatal encephalopathy and cerebral palsy: a knowledge survey of Fellows of The American College of Obstetricians and Gynecologists. Obstetrics and gynecology 2003. link02322-0) 12 Tharp BR. Neonatal seizures and syndromes. Epilepsia 2002. link 13 Hankins GD, Koen S, Gei AF, Lopez SM, Van Hook JW, Anderson GD. Neonatal organ system injury in acute birth asphyxia sufficient to result in neonatal encephalopathy. Obstetrics and gynecology 2002. link01959-2) 14 Weig SG, Marshall PC, Abroms IF, Gauthier NS. Patterns of cerebral injury and clinical presentation in the vascular disruptive syndrome of monozygotic twins. Pediatric neurology 1995. link00219-7) 15 De Souza SW, Milner RD. Clinical and CSF studies in newborn infants with neurological abnormalities. Archives of disease in childhood 1974. link

Neonatal encephalopathy