<unk>  should always be considered a possibility when there is a sudden decrease in fetal heart rate or variable decelerations, particularly after the rupture of membranes. With overt<unk> s, the diagnosis can be confirmed if the<unk>  can be felt on vaginal examination. Without overt<unk> , the diagnosis can only be confirmed after a cesarean section, though even then it will not always be evident at time of procedure. Classification There are three types of<unk><unk>  that can occur: * overt<unk> : descent of the<unk> <unk>  past the presenting fetal part. In this case, the<unk>  is through the cervix and into or beyond the vagina. Overt<unk>  requires rupture of membranes. This is the most common type of<unk><unk> . * occult<unk><unk> : descent of the<unk> <unk>  alongside the presenting fetal part, but has not advanced past the presenting fetal part. Occult<unk><unk>  can occur with both intact or ruptured membranes. * funic <unk>  presentation: presence of the<unk> <unk>  between the presenting fetal part and fetal membranes. In this case, the<unk>  has not passed the opening of the cervix. In funic presentation, the membranes are not yet ruptured.
Umbilical cord prolapse
Placental abruption
Shoulder dystocia
Retained placenta
Persistent cloaca
Neonatal sepsis
Cephalopelvic disproportion
Omphalitis of newborn