Sometimes the blood content of monozygotic twins differs considerably, which can occur when anastomoses exist. One twin loses blood through shunts, while the other gains a large quantity of blood. Therefore, following the delivery of one twin, the other may bleed through these anastomoses if the umbilical cord of the delivered twin is not immediately clamped.
Also indexed as
Fetal blood loss from cut end of co-twin cordfetal haemorrhage from cut end of co-twin's cord