Final answer:
Immediate action is warranted when a rush of blood occurs after IUPC insertion, potentially indicating a serious complication such as placental abruption. This includes stopping oxytocin, checking maternal and fetal vital signs, and preparing for possible emergency cesarean section, as well as ensuring adequate IV access and close monitoring.
Step-by-step explanation:
When an Intrauterine Pressure Catheter (IUPC) is inserted and there is a sudden rush of 300cc of frank blood and amniotic fluid, immediate action should be taken because this may indicate placental abruption or uterine rupture, which are obstetric emergencies. The next steps include promptly stopping any oxytocin infusion if being administered, quickly assessing the maternal vital signs and fetal heart rate for signs of distress, and preparing for an emergency cesarean section if necessary.
Ensuring that the mother has adequate IV access and is closely monitored for further blood loss is critical. As soon as it is safe to do so, transferring the mother to an appropriate setting for further care, such as an operating theatre, should be conducted, while also summoning additional medical support, including an obstetrician and anesthetist.