A term neonate born by emergency cesarean section for fetal distress is noted to have Apgar scores of 3 and 6 at 1 and 5 minutes respectively. After initial resuscitation the neonate develops seizures at 12 hours of age, hypotonia, and has an abnormal amplitude-integrated EEG. Sarnat staging places this infant in Stage II HIE. Which statement about therapeutic hypothermia in this infant is MOST accurate?
- A Cooling initiated within 6 hours improves neurodevelopmental outcomes; target rectal temp 33–34°C for 72 hours ✓
- B Cooling should target a rectal temperature of 33–34°C for 48 hours
- C Therapeutic hypothermia should be deferred in the presence of clinical seizures
- D Cooling to 32°C for 96 hours provides superior neuroprotection over standard protocol
Correct answer: A. Cooling initiated within 6 hours improves neurodevelopmental outcomes; target rectal temp 33–34°C for 72 hours
Explanation
Therapeutic hypothermia (whole-body or selective head cooling) is the standard of care for moderate-severe HIE (Sarnat Stage II-III) in infants ≥36 weeks gestation, initiated within 6 hours of birth. The target core temperature is 33–34°C maintained for exactly 72 hours, followed by slow rewarming at ≤0.5°C per hour. Cooling is NOT contraindicated by seizures; seizures are treated concurrently with phenobarbital. Deeper cooling (32°C) or prolonged cooling (96 hours) has not been proven superior and may increase adverse effects.
Reference: Ghai Essential Pediatrics, 10th ed.
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Written and medically reviewed by the StethoPrep medical team.