Exothermic mattresses to prevent admission hypothermia

A randomized trial from Ireland compared preterm infants less than 31 weeks gestation who underwent temperature management at birth with or without an exothermic mattress. All infants received radiant heat and were placed in a polyethylene bag as well. The trial was stopped early, after enrolling 72 infants, because infants managed with an exothermic mattress had a higher incidence of hyperthermia on NICU admission (rectal temperature > 37.5 deg C; 46% vs 17%), and a lower incidence of rectal temperature in the normal range (36.5 – 37.5 deg C; 41% vs 77%).

Randomized trial of exothermic mattresses for preterm infants in polyethylene bags. Mc Carthy et al 2013