The first sign of<unk>  is usually a sudden and severe decrease in fetal heart rate that does not immediately resolve. On fetal heart tracing (a linear recording of the fetal heart rate) this would usually look like moderate to severe variable decelerations. In overt<unk><unk> , the<unk>  can be seen or felt on the vulva or vagina. A majority of<unk>  cases happen during the second stage of labor.
Umbilical cord prolapse
Placental abruption
Shoulder dystocia
Retained placenta
Persistent cloaca
Neonatal sepsis
Cephalopelvic disproportion
Omphalitis of newborn