Abstracts

To identify and quantify sharp and spikes wave transients found in neonatal polysomnography of healthy term newborn babies throughout different sleep-stages. Thirty-two neonatal polysomnographic studies of term babies from the Hospital de Clnicas da Universidade Federal do Paran[aacute] (UFPR) were reviewed. The babies were term, healthy, legal age of two days and with adequate monitoring during pregnancy. Polygraphic studies were performed in a 21 channels EEG machine, with montages internationally accepted standards for the neonatal period and without sedation. Quantify sharp and spikes wave transients and analyzed in each sleep-stages. The mean duration of the polygraphic studies was of 57 minutes. The total number of sharp and spikes wave transients was 206 (6.4 per exam), of which 106 were in quiet sleep, 55 in active-sleep and 41 in transitional sleep. Showed a total of 0.1 sharp and spikes wave transients per minute. In quite sleep were 0.17 sharp and spikes wave transients per minute, in active-sleep 0.07 per minute and in transients sleep 0.19 per minute. The Kruskal-Wallis test shows that sharp and spikes wave transients are more frequently in sleep-quiet. In the normal term babys sharp and spikes wave transients mostly during quiet-sleep. Even thus, sharp and spikes wave transients per minute were more frequentlly in sleep transients. In newborn healthy we found the number of sharp and spikes wave transients during one minute in each sleep-stages. (Supported by The clinical significance of Sharp and spikes wave transients(ST) for both preterm and fullterm infants needs more investigation. Sporadic sharp wave may be either normal or anormal, depeding on clinical context, the EEG background activity, location, morphology and age postconceptional.)