IRCT2015032621542N1 IRCT 2015-08-23 Babol University of Medical Sciences The effects of prone positions on o2 saturation and heart rate in ventilated premature infants The effects of prone positions on o2 saturation and heart rate in ventilated premature infants 2014-07-20 anticipated 35 Complete https://irct.ir/trial/18853 interventional Randomization: N/A, Blinding: Not blinded, Placebo: Not used, Assignment: Single, Purpose: Treatment. N/A Respiratory and cardiovascular disorders specific to the perinatal period. Thirty five cases of low birth weight infants ( birth weight less than 2000 g ) and premature ( less than 34 weeks gestational age ) located under mechanical ventilation , Inclusion Entry criteria infants under mechanical ventilation for 2 hours supine position and physiological parameters recorded during this period every 10 minutes and the infant placed prone position for 2 hours During this time physiological parameters in 10 minutes by monitoring cardiac -inspiratory ( monitoring SAADAT ) measured by pulse oximeter and recorded and compared with the mean in each state.