Objective: The aim of the study was to evaluate the impact of maternal body position during the labour on the a foetal and maternal SpO2 and the maternal blood pressure values. Typ of Study: Open prospective. Setting: 1 st Department of Obstetrics and Gynaecology, Medical Faculty, Masaryk University, Brno, Czech Republic. Methods: 20 patients were enrolled in the study. They had to meet the following criteria: written informed consensus, no-risk pregnancy of 39. - 40. weeks, vertex presentation, ruptured mem- branes. CTG and SpO2 of the mother and the foetus and maternal blood pressure were monitored simultaneously in 10 min intervals in supine position, left and right side during the 1 st stage of labour. For foetal SpO2 values registration intrapartum foetal pulse oximeter N-400 was used. Results: No changes in maternal SpO2, FSpO2 values were revealed in the three body positions and maternal blood pressure. Conclusion: In no-risk pregnancies the maternal body position has no impact on foetoplacental perfusion manifested by the changes in FSpO2. Thus the mother in labour can choose any hori- zontal body position without risking the disturbances in foetal oxygen supply.

        Key words: oxygen saturation (SpO2), intrapartum foetal pulse oximetry (IFPO), maternal body