Breech Presentation - External Cephalic Version
Pros and cons of external cephalic version (ECV), planned vaginal breech delivery and elective caesarean section
In a Cochrane review,2001-01
ECV appeared to be a safe and effectiveway
of reducing the number of elective caesarean sections
forbreech presentation but there was not
enough evidence to quantifyserious
complications. Large observational studies suggest thatthese are uncommon.2004-01
In this review of 44 studies, which included7 377 participants, transient abnormal heart rate
patterns occurredin 5.7% of cases, with
persistent abnormality in 0.37%. Othercomplications included vaginal bleeding (0.47%),
placental abruption(0.12%) and emergency
caesarean section (0.43%). Perinatal mortalitywas 0.16% but this needs to be kept in perspective
with an expectedfetal loss rate of 0.6%
between 36 and 42 weeks of gestationin a
low-risk population.
It is also clear that ECV should not be offered if ready accessto emergency caesarean section is not available. Busy unitsmay not be able to offer this assurance and this may be a reasonwhy the implementation of ECV is inconsistent.1997-01 If needed,emergency caesarean section may be performed more quickly undergeneral than epidural anaesthesia but this would require rapidsequence induction. It would seem unreasonable to fast all womenundergoing ECV. Success rates vary between 50?80%. The validity of the contraindicationshas not yet been tested in randomised controlled studies. Fetalheart monitoring is recommended as bradycardia occurs frequentlyand, if persistent, urgent delivery may be required.1983-01 Use oftocolytic agents improves the success rate of ECV and, at thedoses required, they have few risks or side effects.2004-02
In a case controlled study2002-01
the caesarean section rate wasalmost three
times higher in a group of 279 women who had undergone
If ECV fails or the procedure is declined, the choice
of plannedvaginal breech delivery or
elective caesarean section must bediscussed.
The two issues of ECV and caesarean section are closelylinked. Counselling and consent issues, therefore,
need to beinitiated by the 36-week visit to
give the woman sufficienttime to make an
informed decision. Training in ECV is much simpler than for vaginal
breech deliveryand it should be included in
the formal training programme.Methods and
protocols for performing the procedure should bein place.Links to reference abstracts.
- External cephalic version: a safe procedure? A systematic review of version-related risks.(2004-01)
- Interventions to help external cephalic version for breech presentation at term.(2004-02)
- Factors associated with adverse perinatal outcome in the Term Breech Trial.(2003-01)
- High incidence of obstetric interventions after successful external cephalic version.(2001-01)
- What are the implications for the next delivery in primigravidae who have an elective caesarean section for breech presentation?(2002-02)
- External cephalic version facilitation for breech presentation at term.(2001-01)
- External cephalic version at term: a survey of consultant obstetric practice in the United Kingdom and Republic of Ireland.(1997-01)
- Cardiotocographic changes after external cephalic version.(1983-01)
Thank you for choosing to visit us.
This is the personal website of David A Viniker MD FRCOG, Consultant Obstetrician and Gynaecologist at Whipps Cross University Hospital, London - Specialist Interests - Reproductive Medicine including Infertility, PCOS, PMS, Menopause and HRT.
I do hope that you find the answers to your women's health questions in the patient information and medical advice provided.
Thank you for choosing to visit us.
This is the personal website of David A Viniker MD FRCOG, Consultant Obstetrician and Gynaecologist at Whipps Cross University Hospital, London - Specialist Interests - Reproductive Medicine including Infertility, PCOS, PMS, Menopause and HRT.
I do hope that you find the answers to your women's health questions in the patient information and medical advice provided. If you still have unanswered questions, please consider entering them into one of our forums and I will try to assist you.
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