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Short-Duration Hypothermia Induction in Rats using Models for Studies examining Clinical Relevance and Mechanisms

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Reducing hypothermia in preterm infants with polyethylene wrap.

Jaafar Rohana¹, Wan Khairina, Nem Yun Boo

¹Department of Paediatrics, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia. drohana@ppukm.ukm.my

Pediatrics International : Official Journal of the Japan Pediatric Society

|November 26, 2010

Summary

Applying polyethylene plastic wrap immediately after birth significantly increased admission temperatures in preterm infants (gestational age <34 weeks), reducing hypothermia incidence. This simple intervention improves thermal stability in vulnerable newborns.

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Area of Science:

Neonatalogy
Perinatal Medicine
Thermoregulation

Background:

Occlusive plastic wrap is effective for very preterm infants (<28 weeks' gestation) to prevent heat loss.
The effectiveness of occlusive wrap for infants between 28 and 34 weeks' gestation remains unclear.
This study investigates the impact of immediate postnatal occlusive wrap on temperature in preterm infants.

Purpose of the Study:

To determine the effect of occlusive wrap at birth on admission temperature in preterm infants.
To evaluate the incidence of hypothermia in preterm infants managed with or without occlusive wrap.
To assess the efficacy of occlusive wrap in infants with gestational age ≥24 and <34 weeks.

Main Methods:

A randomized controlled trial was conducted with preterm infants (gestational age ≥24 and <34 weeks).
Infants were assigned to either an occlusive polyethylene plastic wrap group or a standard care (control) group immediately after birth.
Axillary temperatures were measured upon Neonatal Intensive Care Unit (NICU) admission and after stabilization in incubators.

Main Results:

The occlusive wrap group exhibited a significantly higher mean admission temperature (35.8°C) compared to the control group (34.8°C).
Hypothermia (<36.5°C) was less frequent in the wrap group (78%) than in the control group (98%).
Among infants <28 weeks' gestation, post-stabilization temperatures were significantly higher in the wrap group.

Conclusions:

Immediate postnatal application of polyethylene plastic wrap is associated with improved thermoregulation in preterm infants up to 34 weeks' gestation.
Occlusive wrapping reduces the incidence of hypothermia in preterm neonates.
This intervention offers a simple and effective method to enhance thermal stability in preterm infants.