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Neurodevelopmental Outcome in Newborn With Hypoxic-ischemic Encephalopathy Treated With Therapeutic Hypothermia

I

Institute of Hospitalization and Scientific Care (IRCCS)

Status

Enrolling

Conditions

Encephalopathy, Hypoxic Ischemic

Treatments

Diagnostic Test: Clinical and instrumental neurological assessment

Study type

Observational

Funder types

Other

Identifiers

Details and patient eligibility

About

The goal of this observational study is to identify early signs of poor neurodevelopmental outcome by performing specific neurological, neurophysiological and neuroimaging assessments in newborns with hypoxic-ischemic encephalopathy treated with therapeutic hypothermia.

The main questions it aims to answer are:

  • Identify patients at risk of neuromotor, cognitive and epileptic sequelae
  • Plan early rehabilitation programs and future trials on early neuroprotection in infant at risk of neurodevelopmental disability

Participants will be involved in serial assessment:

  • Before and after therapeutic hypothermia and before discharge: neurological assessment, according to the modified Sarna (t) score, Thompson's score and Hammersmith Neonatal Neurological Examination (HNNE); General Movement Assessment
  • Amplitude integrated electroencephalogram (aEEG) within 6 hours of life, for 6 hours.
  • Neonatal Cranial Ultrasonography within 6 hours of life, in the third and seventh day of life.
  • Brain magnetic resonance imaging between 7 and 14 days.
  • Electroencephalogram (EEG) within 7 days.

After discharge study population will perform:

  • EEG between 3 and 6 months.
  • Neurological assessment using Hammersmith Infant Neurological Examination (HINE) at 3-6-9-12 months.
  • General Movement Assessment at 3 months.
  • Neurodevelopmental assessment using the Griffiths Mental Development Scales at 24 months.
  • Cognitive assessment using the Wechsler Preschool and Primary Scale of Intelligence between 36 and 41 months.
  • Motor performance assessment using Movement ABC between 42 and 48 months.

Enrollment

70 estimated patients

Sex

All

Ages

10 minutes to 6 hours old

Volunteers

No Healthy Volunteers

Inclusion and exclusion criteria

Inclusion Criteria:All infants with gestational age ≥ 35 weeks and with a body weight ≥ 1800 g were considered eligible, if they satisfied the following criteria:

  • Intrapartum hypoxia defined as follows: potential of hydrogen (pH)≤ 7.0 or B.E. ≥ 16 millimole liters (mmo/L) in the 1st hour of life, obtained from cord or arterial blood, or (ii) pathological intra-partum course (e.g., abnormal foetal heart rate, cord prolapse, uterine rupture, maternal haemorrhage/trauma/epileptic seizures/cardiorespiratory arrest, shoulder dystocia, fluid meconium-stained amniotic), or Apgar score ≤5 or continuous respiratory support at 10 minutes.
  • Signs of moderate or severe encephalopathy according to the Sarna (t) score and Sarna (t) staging, performed at 30-60 minutes of life: stage 2 (lethargic, poor spontaneous activity, distal flexion posture, hypotonia, weak primitive reflexes, myotic pupils, bradycardia or periodic breathing) or stage 3 (stupor/coma, decerebrate posture, spontaneous activity absent, flaccidity, primitive reflexes absent, non-reactive pupils or apnoea).
  • Amplitude integrated electroencephalogram( aEEG ) by Cerebral Functional Monitoring (CFM) or electroencephalogram (EEG) for at least 30 minutes, which shows either moderate or severe electroencephalographic anomalies, or the presence of convulsions.

All enrolled infants underwent therapeutic hypothermia according to the international guideline for 72 hours.

Exclusion Criteria:

Infants with:

  • gestational age <35 weeks,
  • severe foetal growth restriction (body weight <1800 g),
  • inability to start therapeutic hypothermia within 6 hours of birth,
  • other known causes of encephalopathy (chromosomopathies, brain malformations, metabolic encephalopathies, major congenital anomalies, neonatal withdrawal syndrome), - incoercible bleeding,
  • refusal of consent by the parent/guardian/legal representative

Trial design

70 participants in 1 patient group

Newborns with hypoxic-ischemic encephalopathy treated with therapeutic hypothermia
Treatment:
Diagnostic Test: Clinical and instrumental neurological assessment

Trial contacts and locations

2

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Central trial contact

Domenico M Romeo, MD,PHD

Data sourced from clinicaltrials.gov

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