The new RCOG Management of Breech Presentation guideline has been published today. This guideline substantially revises recommendations in the previous version, published in 2006. If followed, it will undoubtedly improve women’s access to and experience of breech care. Below I will highlight two of the new guideline’s game-changing recommendations, and then raise two key questions concerning areas of on-going exploration.
Reference: Impey LWM, Murphy DJ, Griffiths M, Penna LK on behalf of the Royal College of Obstetricians and Gynaecologists. Management of Breech Presentation. BJOG 2017; DOI: 10.1111/1471-0528.14465.
Counselling (Section 4.1)
The guideline offers specific recommendations around counselling, following the summary presented by lead author Mr Lawrence Impey at the RCOG Breech Conference in 2014. When discussing perinatal mortality, rather than focusing on the dichotomy between elective caesarean section at 39 weeks (0.5/1000) and planned breech birth (2.0/1000), the guidelines also recommend women consider these figures in light of those for planned cephalic birth (1.0/1000).
— Oli Silverwood-Cope (@olvindaRM) March 17, 2017
This is important. If we follow the logic that has dominated breech care for the last 17 years – elective CS for all because it reduces perinatal mortality – we would need to apply this to planned cephalic births as well. The truth is always somewhere in between. All childbirth options carry benefits as well as risks, and women should be supported to apply their own values to decision-making, rather than feel obligated to adopt uniform recommendations arising from contemporary risk-focused discourse. This new guideline is much clearer about the obligation of health care professionals to present women with genuine breech childbirth options.
Maternal birth position (Section 6.7)
The guideline has changed from recommending lithotomy birth position to the following: “Either a semi-recumbent or an all-fours position may be adopted for delivery and should depend on maternal preference and the experience of the attendant.” This will be joyously welcomed by midwives and obstetricians who have been gradually incorporating upright breech methods into clinical skills training for some time, and the women who have been insisting on the freedom to choose their own birthing position.
— Oli Silverwood-Cope (@olvindaRM) March 18, 2017
But as the explanatory notes indicate, “The principle difficulty with an all-fours position is when manoeuvres are required. Most obstetricians are more familiar with performing these in a difficult breech birth with the woman in the dorsal position.” This begs the question of how we will overcome the difficulty resulting from lack of obstetric familiarity with performing manoeuvres when women are in upright, particularly kneeling positions. Our recently published evaluation of the Breech Birth Network Physiological Breech Birth training days reported that one of the greatest concerns expressed by participants in the workshops was lack of involvement and collaboration from obstetric colleagues, whom they had difficulty convincing to attend the training in order to learn effective manoeuvres. Hopefully changes in our national guideline will prompt more interest.
Question #1: What does it mean to be ‘skilled’ in breech birth birth?
The word ‘skilled’ recurs 15 times in the new RCOG breech guideline. Variations include: ‘skilled intrapartum care,’ ‘skilled birth attendant(s),’ ‘skilled supervision,’ ‘skilled attendant(s),’ ‘operator skilled in vaginal breech delivery,’ ‘skilled support,’ ‘skilled personnel.’ Each reference suggests skill is a key ingredient of safe vaginal birth.
What does it mean to be ‘skilled’ in vaginal breech birth? Is it a quality possessed by individuals, or institutions, or both? How is skill assessed? How is it maintained?
The danger with lack of definition regarding breech skill is that by default it will be judged in retrospect. A good outcome occurs = the attendants were skilled. A bad outcome occurs = the attendants lacked skill and were overconfident in assessment of their own competence. A health professional attends four spontaneous breech births which do not require intervention = they are now perceived as ‘skilled.’
The guideline points to evidence from the PREMODA study, in which good outcomes were achieved in a study with senior obstetrician presence in 92.3% of cases. Association is not causation, but we need to take seriously the value the PREMODA researchers placed on this as a key to their success. In a UK context, or elsewhere, does that mean we can (or should?) reasonably expect all senior obstetricians to be ‘skilled’ at vaginal breech birth? What if the senior obstetrician does not feel ‘skilled’ her/himself? What if a midwife is the most experience person available to attend a breech birth?
The new RCOG guideline further recommends: “Units with limited access to skilled personnel should inform women that vaginal breech birth is likely to be associated with greater risk and offer antenatal referral to a unit where skill levels and experience are greater.” And: “All maternity units must be able to provide skilled supervision for vaginal breech births where a woman is admitted in advanced labour and protocols for this eventuality should be developed.” How will all maternity units be able to provide skilled supervision for undiagnosed breech births, if some of them will also need to be up front about their lack of skill to support planned breech births?
The new guideline recommends that “simulation equipment should be used to rehearse the skills that are needed during vaginal breech birth by all doctors and midwives.” The extent to which such simulation training will result in skill development in settings where skills have become depleted over the last 20-30 years is unclear. Our recent systematic review highlights the lack of evidence regarding the ability of standard training programmes to improve outcomes, and suggests that teaching vaginal breech birth as part of an obstetric emergencies course may actually reduce the chances that providers will actually attend breech births (Walker, Breslin, Scamell and Parker, 2017).
— Oli Silverwood-Cope (@olvindaRM) March 18, 2017
The development of professional competence to facilitate breech births is a complex matter to which institutions may like to pay closer attention as they develop the ‘routine vaginal breech delivery service’ envisioned by the new guideline. Some of this complexity is explored in these two papers involving research with experienced practitioners: Standards for maternity care professionals attending planned upright breech births and Principles of physiological breech birth practice.
Question #2: What is a footling presentation?
Despite the acknowledged paucity of evidence regarding factors that increase the risks of vaginal breech birth, ‘footling presentation’ remains a clinical indication for advising women that the risks associated with vaginal breech birth are likely to be independently increased. Unfortunately, neither the guideline nor generally available breech literature provides a clear definition of what this means, nor is it likely that a similar definition has been used among disparate studies looking at outcomes associated with variations of breech presentation.
The danger with this lack of definition is that in many complete and incomplete breech presentations, where one or both legs are flexed, one or more feet will be palpable on vaginal examination. This is especially the case at advanced dilatation, when legs will often slip further down due to the increased space in the sacral cavity, into which the breech has also descended. And of course in advanced labour, the dangers of performing a caesarean section for a dubious indication are increased. It has never made sense to me to perform a caesarean section at advanced dilatation because one might need to perform a caesarean section! Where skill levels are minimal and practitioners are not taught to locate the sacrum as the denominator, many complete and/or incomplete breech presentations will be labelled ‘footling.’
In my practice, I follow the nomenclature suggested by Susanne Albrechtsen (unfortunately only available in Norwegian): a footling breech is one in which both feet present first, and the fetal pelvis is disengaged, above the pelvic brim. A fetus whose pelvis is engaged with one or more feet palpable alongside is a flexed breech (complete/incomplete).
We will await more professional debate and actual evidence concerning the definition of ‘footling breech’ and its association with fetal outcomes. Perhaps now that the new RCOG is more supportive of vaginal breech birth, more professionals will feel experienced enough to engage in discussions which will move our knowledge base forward and further increase the safety of breech birth.