[Influence of maternal position during delivery of fetal oxygen saturation]

Abstract

The aim of the study is to investigate the alterations in fetal oxygen saturation during right lateral, supine and left lateral maternal position. Thirty six women at term are included--during the first stage of normally progressing labour. Simultaneous monitoring is carried out of fetal heart rate, uterine contractions, fetal oxygen saturation and maternal arterial blood pressure for a certain period of time in different maternal positions. It was established, that fetal oxygen saturation values are lowest in the supine position, still remaining in physiological ranges--47.1 +/- 10.2. If supine syndrome develops, fetal oxygen saturation values decrease significantly: 23%, 25%.