Cool Prime Comparative Effectiveness Study for Mild HIE

Official title

COOLPRIME: Comparative Effectiveness for Cooling Prospectively Infants With Mild Encephalopathy

Overview

To determine effectiveness of therapy to improve neurodevelopmental outcomes in infants with mild HIE. To determine the adverse effects of Therapeutic Hypothermia (TH) in mild HIE on the neonate and his/her family. Determine heterogeneity of the treatment effect across key subgroups obtained in the first 6 hours after birth prior to the decision to initiate therapy.

Detailed description

This study leverages practice variation within and across 15 participating sites to compare the effectiveness of TH versus normothermia for mild HIE on neurodevelopmental outcomes at 2 years of age.After standardizing all aspects of clinical care for mild HIE (except for TH vs. normothermia)we will enroll 460 infants with mild HIE into the longitudinal, observational comparative effectiveness study.The central aim of the comparative longitudinal cohort of mild HIE is (1) to compare the effectiveness of hypothermia to normothermia on neurodevelopmental outcomes at 2 years, (2) determine the adverse effects of TH on the infant and his/her family; and (3) determine the heterogeneity of treatment effects (moderating effect) across mild HIE subgroups as determined by physiological biomarkers obtained during the 6 hours window to initiate hypothermia. The decision to apply TH or normothermia will be entirely determined by practice parameters at each site.

Interventions

• Procedure Normothermia
  Usual care for first 72 hours for neonates with mild encephalopathy maintaining core temperature (36.5°C ± 1 C).
• Procedure Whole body therapeutic hypothermia
  Whole-body therapeutic hypothermia (33.5°C ± 0.5°C) for 72 hours began by 6 hours of age for neonates with mild encephalopathy per site standard of care practice.

Primary outcome measures

• Effectiveness of normothermia in infants as measured by Composite Bayley IV score [Time frame: 22-26 months of age.]

Secondary outcome measures (4)

• Adverse events SAE [Time frame: Discharge (approximately 7 days)]
• Parent-Infant stress and bonding as measured by MIBS [Time frame: 3-4 months]
• Parent-Infant stress and bonding as measured by IBQR [Time frame: 3-4 months]
• Parent-Infant stress and bonding as measured by PSI [Time frame: 3-4 months]

Eligibility criteria

Inclusion criteria

Infants must meet all 3 inclusion criteria

• Neonates born at ≥ 36 0/7 weeks
• Mild Encephalopathy on neonatal neurologic exam within 6 hours after birth: defined as presence of at least 2 signs of mild, moderate, or severe encephalopathy with no more than 2 signs in the moderate or severe category.
• Perinatal Acidosis based on at least one of the following (A or B):

• pH ≤ 7.00 in any cord or first infant gas (arterial, venous, or capillary) within ≤ 60 min OR base deficit ≥ 16 in any cord or first infant gas (arterial, venous or capillary) within ≤ 60 min
• If pH is between 7.01 and 7.15, OR base deficit is between 10 and 15.9 mmol/liter, OR blood gas is not available, an acute perinatal event is an additional criteria required (see below definition)

An acute perinatal event is defined by at least one of the following:

• Apgar score at 10 min ≤ 5
• Continued need for resuscitation at 10 min (chest compressions, bag mask ventilation, or positive pressure ventilation)
• Uterine rupture, placental abruption, cord accident (prolapse, rupture, knot or tight nuchal cord)
• maternal trauma, maternal hemorrhage, or cardiorespiratory arrest
• fetal exsanguination from either vasa previa or feto-maternal hemorrhage, shoulder dystocia
• Any evidence suggestive of acute perinatal event.

Infants are still eligible for enrollment in the COOLPRIME study if the cord or infant's first blood gas (arterial, venous, or capillary) is obtained >60 minutes of life.

Exclusion criteria

• Gestational age at birth < 36 0/7 weeks
• Birth weight < 1800gm
• Head circumference <30cm
• Congenital or chromosomal anomaly associated with abnormal neurodevelopment or death
• Moderate or Severe HIE of 3 or more moderate or severe abnormalities on COOLPRIME Sarnat exam within 6 hours of life
• Any seizures within first six hours of life
• Redirection of care is being considered

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Observational model

Other

Study locations

United States · 1 center

• University of Texas Southwestern Medical Center — Dallas

Publications

• Prempunpong C, Chalak LF, Garfinkle J, Shah B, Kalra V, Rollins N, Boyle R, Nguyen KA, Mir I, Pappas A, Montaldo P, Thayyil S, Sanchez PJ, Shankaran S, Laptook AR, Sant'Anna G. Prospective research on infants with mild encephalopathy: the PRIME study. J Perinatol. 2018 Jan;38(1):80-85. doi: 10.1038/jp.2017.164. Epub 2017 Nov 2. PMID 29095433
• Chalak LF, Nguyen KA, Prempunpong C, Heyne R, Thayyil S, Shankaran S, Laptook AR, Rollins N, Pappas A, Koclas L, Shah B, Montaldo P, Techasaensiri B, Sanchez PJ, Sant'Anna G. Prospective research in infants with mild encephalopathy identified in the first six hours of life: neurodevelopmental outcomes at 18-22 months. Pediatr Res. 2018 Dec;84(6):861-868. doi: 10.1038/s41390-018-0174-x. Epub 2018 S PMID 30250303
• Chalak LF, Adams-Huet B, Sant'Anna G. A Total Sarnat Score in Mild Hypoxic-ischemic Encephalopathy Can Detect Infants at Higher Risk of Disability. J Pediatr. 2019 Nov;214:217-221.e1. doi: 10.1016/j.jpeds.2019.06.026. Epub 2019 Jul 10. PMID 31301853
• El-Dib M, Inder TE, Chalak LF, Massaro AN, Thoresen M, Gunn AJ. Should therapeutic hypothermia be offered to babies with mild neonatal encephalopathy in the first 6 h after birth? Pediatr Res. 2019 Mar;85(4):442-448. doi: 10.1038/s41390-019-0291-1. Epub 2019 Jan 16. PMID 30733613

Identifiers

NCT: NCT04621279 · STU-2022-0714

Primary sources (government registries)

• ClinicalTrials.gov (US NIH)

View this study on ClinicalTrials.gov ↗