A fewer irregular fetal heart rate patterns were observed among seven (7%) of the primigravidae the in the supported sitting group as compared to 13 (13%) of the primigravidae in the supine-lithotomy group. Similar findings were reported by a case control study by Cito et al4 who evaluated the effects of upright versus supine/lithotomy posture on the fetal heart rate patterns during the nonstress test among 368 low risk term primigravidae. The results showed that the reclining supine position was associated with greatest number of variable decelerations than the upright postures. All the participants in the supported sitting group 100 (100%) had maintained normal baseline blood pressure throughout, while as 17 (17%) of the participants in the supine- lithotomy position had a drop in their baseline blood pressure, because the mothers were lying flat on their back in supine position and the pressure of gravid uterus compressing major abdominal blood vessels resulting in supine hypotension– aortocaval occlusion as contrary to the supported sitting position which keeps the gravid uterus off the major blood vessels with simple elevation of their back preventing supine hypotension and aortocaval occlusion. The results of this study is in line with the comparative study by Ariel et al5 who evaluated the effects of supine versus non-supine on the maternal blood pressure by the ultrasound estimation of blood flow in the right ascending branch of the uterine artery among normal primigravidae reporting that the maternal blood volume decreased from 410+/93 to 267+/ 73cc minute in supine position. There was a significant decrease of 11 minutes in the duration of second stage of labor among women in supported sitting posture as compared to supine-lithotomy group which was similar to the findings of Cochrane Pregnancy Childbirth Group systematic review of randomized trials