Subscribe to RSS
DOI: 10.1055/s-2006-958157
Hypothermia for the Treatment of Neonatal Ischemic Encephalopathy: Is the Genie out of the Bottle?
Publication History
Publication Date:
27 December 2006 (online)

ABSTRACT
Evidence suggests that hypothermia for hypoxic ischemic encephalopathy in the term neonate may decrease the risk of death or neurodevelopmental impairment. The objective of this study was to determine how hypothermia has been incorporated into practice. An anonymous survey was sent to medical directors of United States neonatal intensive care units (NICUs) in October 2005. We received completed surveys from 441 (54.5%) of 809 of NICUs. Only 6.4% of respondents used hypothermia. The most common method was total body cooling (64.3%) compared with head cooling (25%) or both (10.7%). At centers that did not offer hypothermia, 29% transferred infants to an institution that did. Centers that offered hypothermia were more likely at academic institutions (76.9%) compared with private practices (11.5%; p < 0.001). Hypothermia was more likely offered at institutions that offered extracorporeal membrane oxygenation (ECMO; 57%) than centers where ECMO was not offered (43%; p < 0.001). There has not been widespread use of hypothermia. There are a variety of protocols used. As results of further outcome studies become available, educational efforts and national practice guidelines will be essential.
KEYWORDS
Hypothermia - hypoxic ischemic encephalopathy - practice variation - neonate
REFERENCES
- 1 Colbourne F, Corbett D. Delayed and prolonged post-ischemic hypothermia is neuroprotective in the gerbil. Brain Res. 1994; 654 265-272
- 2 Gunn A J, Gunn T R, de Haan H H, Williams C E, Gluckman P D. Dramatic neuronal rescue with prolonged selective head cooling after ischemia in fetal lambs. J Clin Invest. 1997; 99 248-256
- 3 Gunn A J, Gunn T R, Gunning M I, Williams C E, Gluckman P D. Neuroprotection with prolonged head cooling started before postischemic seizures in fetal sheep. Pediatrics. 1998; 102 1098-1106
- 4 Tooley J R, Satas S, Porter H, Silver I A, Thoresen M. Head cooling with mild systemic hypothermia in anesthetized piglets is neuroprotective. Ann Neurol. 2003; 53 65-72
- 5 Thoresen M, Penrice J, Lorek A et al.. Mild hypothermia after severe transient hypoxia-ischemia ameliorates delayed cerebral energy failure in the newborn piglet. Pediatr Res. 1995; 37 667-670
- 6 Baldwin W A, Kirsch J R, Hurn P D, Toung W SP, Traystman R J. Hypothermic cerebral reperfusion and recovery from ischemia. Am J Physiol. 1991; 261 H774-H781
- 7 Edwards A D, Yue X, Squier M T et al.. Specific inhibition of apoptosis after cerebral hypoxia-ischemia by moderate post-insult hypothermia. Biochem Biophys Res Commun. 1995; 217 1193-1197
- 8 Gunn A J, Gluckman P D, Gunn T R. Selective head cooling in newborn infants after perinatal asphyxia: a safety study. Pediatrics. 1998; 102 885-892
- 9 Eicher D J, Wagner C L, Katikaneni L P et al.. Moderate hypothermia in neonatal encephalopathy: safety outcomes. Pediatr Neurol. 2005; 32 18-24
- 10 Eicher D J, Wagner C L, Katikaneni L P et al.. Moderate hypothermia in neonatal encephalopathy: efficacy outcomes. Pediatr Neurol. 2005; 32 11-17
- 11 Gluckman P D, Wyatt J S, Azzopardi D et al.. Selective head cooling with mild systemic hypothermia after neonatal encephalopathy: a multicentre randomised trial. Lancet. 2005; 365 663-670
- 12 Shankaran S, Laptook A R, Ehrenkranz R A et al.. Whole-body hypothermia for neonates with hypoxic-ischemic encephalopathy. N Engl J Med. 2005; 353 1574-1584
- 13 Papile L. Systemic hypothermia: a “cool” therapy for neonatal hypoxic-ischemic encephalopathy. N Engl J Med. 2005; 353 1619-1620
- 14 Blackmon L R, Stark A R. and the Committee on Fetus and Newborn, American Academy of Pediatrics. Hypothermia: a neuroprotective therapy for neonatal hypoxic-ischemic encephalopathy. Pediatrics. 2006; 117 942-948
- 15 Stark A R. Therapeutic hypothermia, a promising yet unproven therapy for HIE. AAP News. 2006; 27 20
- 16 Higgins R D, Raju T N, Perlman J, Azzopardi D V. Hypothermia and perinatal asphyxia: executive summary of the National Institute of Child Health and Human Development workshop. J Pediatr. 2006; 148 170-175
Christopher E ColbyM.D.
Assistant Professor of Pediatrics, Department of Pediatrics, Mayo Clinic
200 First Street SW, Rochester, MN 55905