Atividade eletromiográfica do músculo bíceps braquial de recém nascidos pré-termo submetidos à posição canguru

Abstract

Objectives: To evaluate the profile of the electromyographic activity of the brachial biceps in preterm newborns (PTNBs) before being placed in the Kangaroo position and after 48 hours in this position. Methods: A propspective cohort evaluating 20 PTNBs admitted to the Kangaroo Mother Unit of the Instituto de Medicina Integral Prof. Fernando Figueira (IMIP), Recife, PE. The electromyographic activity of the brachial biceps muscle was evaluated immediately before being placed in the Kangaroo position and checked every 24h for three consecutive days. The measurement was taken for one minute using an electromyograph. Self-adhesive electrodes were placed between the motor point and the myotendinous junction. To compare the mean values, analysis of variance for repeated measurements was used.R esults: Electromyographic activity differed to a statistically significant degree from one interval to another [F (3,67) = 6,01; p=0,005], being greater after 48 h than at 0 h, but not after 24 h. Conclusions: The Kangaroo position is capable of bringing about an increase in electromyographic activity in preterm children.