External cephalic version: pre-procedure checks, monitoring and complications

Purpose and pre-procedure checks

The aim is to make vaginal birth possible for a fetus in breech presentation. It is usually offered from around 36 to 37 weeks, when the fetus is mature enough that an emergency birth would not be preterm. Success rates vary, and neuraxial analgesia or a tocolytic to relax the uterus may be used to improve the chance of turning. The patient should understand that the procedure can be uncomfortable and that the fetus may not turn, or may turn back.

Ultrasound confirms presentation, amniotic fluid volume and placental location, and a fetal heart tracing should be reassuring before starting. Contraindications include placenta previa, active labour, a classical caesarean scar and an abnormal fetal heart pattern. The nurse also confirms consent, intravenous access, blood group and Rh status, and fasting status according to local policy.

Fetal monitoring during and after the version

Transient fetal heart rate changes, including brief bradycardia, are relatively common during or immediately after the procedure and usually resolve. The nurse resumes continuous monitoring as soon as the version is completed or abandoned and observes for a period afterward, as set by local protocol, until the tracing is reassuring. Record the maternal pulse and blood pressure as well, particularly when a tocolytic has been given, because these medicines can raise the maternal heart rate.

A deceleration that persists, recurrent abnormal patterns or loss of variability are not expected and require immediate escalation. Because an urgent caesarean birth is occasionally needed, version is performed where that option is available, and the nurse should know the plan before the procedure starts.

Abruption, cord and membrane complications

Placental abruption is uncommon after version but serious. Warning signs include vaginal bleeding, persistent abdominal pain, a firm or tender uterus, frequent contractions and an abnormal fetal heart pattern. Report any of these promptly rather than attributing pain to the procedure itself.

Membranes can rupture during or after manipulation, and cord prolapse is a recognised risk when that happens. Teach the patient to report fluid leakage, bleeding, regular contractions, abdominal pain or reduced fetal movements after going home. Any sign of cord prolapse is an obstetric emergency handled through the local emergency pathway. Labour may also begin soon after the procedure, so the patient should know when and how to contact the birth unit.

Rh immune globulin after version

Version can cause fetomaternal haemorrhage, in which fetal red cells enter the maternal circulation. An Rh-negative patient carrying an Rh-positive fetus may form antibodies that threaten a future pregnancy. For this reason Rh immune globulin is given within 72 hours after events that may cause significant fetomaternal bleeding, and external cephalic version is one of them.

If the volume of fetal blood is uncertain, a screening test followed by a quantitative test such as Kleihauer-Betke can show whether additional immune globulin is needed. The nurse confirms Rh status before the procedure, ensures the prescribed dose is given and documents it. If the version is unsuccessful, the immune globulin is still indicated, because the manipulation itself creates the bleeding risk.

A hypothetical post-version question

Consider a hypothetical Rh-negative patient one hour after a successful version. The tracing is reassuring, and she reports mild abdominal tenderness. Which nursing action is most important before discharge: giving Rh immune globulin as prescribed, teaching to return for bleeding or reduced movements, removing monitoring now, or both the first and second actions? The question is testing whether the nurse can see two separate risks at once rather than choosing a single action.

Both Rh immune globulin and discharge teaching are correct, because sensitisation and delayed complications are the two main post-procedure risks. Removing monitoring without a defined observation period is premature. If the mild tenderness became persistent pain, bleeding or a changing tracing, abruption would move to the top of the priority list.

Sources and further reading

Obstetrics and Gynecology Science: Practical technique and clinical management guide for external cephalic version. Timing at 37 weeks, contraindications, pre-procedure ultrasound and fetal monitoring, tocolysis and neuraxial analgesia, transient fetal heart rate changes, abruption, membrane rupture, cord prolapse and emergency caesarean.

NHS: If your baby is breech. Version usually offered when the baby is breech at 36 weeks and how the turn is performed.

MSD Manual Professional: Hemolytic disease of the fetus and neonate. Rh immune globulin within 72 hours after events including external cephalic version, and Kleihauer-Betke testing to quantify fetomaternal haemorrhage.