NORMAL LABOUR

Third Stage:(1) Schultze’s mechanism(80%):The central area of the placenta separates first and placenta is deliveredlike an inverted umbrella so the foetal surface appears first followed bythe membranes containing small retroplacental clot.There is less blood loss and less liability for retention of fragments.(2) Duncan’s mechanism (20%):The lower edge of the placenta separates first and placenta is deliveredside ways.There is more liability of bleeding and retained fragments.Andersson et al found that delayed cord clamping (≥180 seconds afterdelivery) improved iron status and reduced prevalence of iron deficiencyat age 4 months and also reduced prevalence of neonatal anemia,without apparent adverse effects