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O&G TopicsIntrapartum care — operative birth

O&G · Intrapartum care — operative birth

Caesarean birth on maternal request

Also known as CBMR · CDMR · Cesarean delivery on maternal request · Maternal request caesarean · Elective caesarean without medical indication · Caesarean by choice

Exam-exhaustive FRANZCOG reference on caesarean birth on maternal request — RANZCOG C-Obs 39 (2023) and its two lawful endings, the very-low-certainty benefit and harm table in absolute terms, tokophobia and the trauma behind the request, the accreta and future-fertility consequences of a first caesarean, and how to document a request you disagree with. RANZCOG-primary, globally tagged.

high16 referencesUpdated 26 July 202615 min readVerification in progress

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FRANZCOGMRCOGABOGFRCSCMRCPI

Red flags

  • Agreeing before you have asked why — the request is a symptom until you have heard the reason
  • Missing tokophobia, previous birth trauma or sexual violence behind an apparently casual request
  • Declining and stopping there — conscientious objection without a timely referral is abandonment
  • Counselling the first caesarean as a single event rather than as a decision about every future pregnancy
  • Quoting relative risks for rare catastrophes without the absolute numbers beside them
  • Booking before 39+0 weeks with no reason recorded in the notes
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Practise this topic10 MCQs with explanations

Target exams

FRANZCOGMRCOGABOGFRCSCMRCPI

Red flags

  • Agreeing before you have asked why — the request is a symptom until you have heard the reason
  • Missing tokophobia, previous birth trauma or sexual violence behind an apparently casual request
  • Declining and stopping there — conscientious objection without a timely referral is abandonment
  • Counselling the first caesarean as a single event rather than as a decision about every future pregnancy
  • Quoting relative risks for rare catastrophes without the absolute numbers beside them
  • Booking before 39+0 weeks with no reason recorded in the notes
One-line fellowship answer

A request for caesarean without medical indication is answered by a conversation, not a yes or a no — explore the reason, screen for fear of childbirth and past trauma, quote the benefits and harms in absolute terms with their very low certainty, name the accreta and future-fertility consequences of a first uterine scar, and then either agree or refer to a second obstetrician, never before 39 weeks, always documented.[1][2][3]

She is 32, well, 22 weeks pregnant with her first baby, and she says it almost as an aside: "I've decided I want a caesarean." The temptation is to answer the question she asked. The consultants who handle this well answer the question underneath it first — and about six times in ten, the request changes.[8][9]

Overview and definition

Caesarean birth on maternal request (CBMR) is planned caesarean at the woman's request where there is no identifiable medical or obstetric contraindication to vaginal birth. Everything hinges on that clause: it is what separates a preference from an indication.[1][2]

RANZCOG C-Obs 39 (approved July 2023) defines the population precisely as low risk — a cephalic singleton at term, a normally positioned placenta, no detected growth disorder, no maternal infection and no other chronic health condition. If any of those fails, you are no longer counselling a request; you are managing an indication.[1]

  • Antenatal request is what the guideline addresses. An intrapartum request is explicitly out of scope, which does not mean you may ignore one.[1]
  • The term itself is contested. C-Obs 39 asks for sensitivity around it, because a request driven by previous loss, or by interpersonal or sexual violence, may be legitimately medically indicated even though no obstetric box is ticked.[8]
Why the guidance sounds so tentativeThe NIH state-of-the-science panel concluded in 2006 that the magnitude of CBMR is hard to quantify and the evidence insufficient to fully evaluate benefits and risks, and that every decision must be individualised and consistent with ethical principles. Nearly two decades on, C-Obs 39 grades the certainty behind its own recommendation as very low. Saying that out loud is not weakness — it is the honest frame for the whole consultation.[1][2]
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References16ShowHide
  1. [1]American College of Obstetricians and Gynecologists ACOG Committee Opinion No. 761: Cesarean Delivery on Maternal Request. Obstet Gynecol, 2019.PMID 30575678
  2. [2]National Institutes of Health National Institutes of Health state-of-the-science conference statement: Cesarean delivery on maternal request March 27-29, 2006. Obstet Gynecol, 2006.PMID 16738168
  3. [3]Silver RM, Landon MB, Rouse DJ, et al. Maternal morbidity associated with multiple repeat cesarean deliveries. Obstet Gynecol, 2006.PMID 16738145
  4. [4]Marshall NE, Fu R, Guise JM Impact of multiple cesarean deliveries on maternal morbidity: a systematic review. Am J Obstet Gynecol, 2011.PMID 22071057
  5. [5]Keag OE, Norman JE, Stock SJ Long-term risks and benefits associated with cesarean delivery for mother, baby, and subsequent pregnancies: Systematic review and meta-analysis. PLoS Med, 2018.PMID 29360829
  6. [6]Sandall J, Tribe RM, Avery L, et al. Short-term and long-term effects of caesarean section on the health of women and children. Lancet, 2018.PMID 30322585
  7. [7]Tähtinen RM, Cartwright R, Tsui JF, et al. Long-term Impact of Mode of Delivery on Stress Urinary Incontinence and Urgency Urinary Incontinence: A Systematic Review and Meta-analysis. Eur Urol, 2016.PMID 26874810
  8. [8]Hofberg K, Brockington I Tokophobia: an unreasoning dread of childbirth. A series of 26 cases. Br J Psychiatry, 2000.PMID 10789333
  9. [9]Saisto T, Salmela-Aro K, Nurmi JE, et al. A randomized controlled trial of intervention in fear of childbirth. Obstet Gynecol, 2001.PMID 11704175
  10. [10]Smith GC, Pell JP, Dobbie R Caesarean section and risk of unexplained stillbirth in subsequent pregnancy. Lancet, 2003.PMID 14654315
  11. [11]Landon MB, Hauth JC, Leveno KJ, et al. Maternal and perinatal outcomes associated with a trial of labor after prior cesarean delivery. N Engl J Med, 2004.PMID 15598960
  12. [12]Tita AT, Landon MB, Spong CY, et al. Timing of elective repeat cesarean delivery at term and neonatal outcomes. N Engl J Med, 2009.PMID 19129525
  13. [13]Hansen AK, Wisborg K, Uldbjerg N, et al. Risk of respiratory morbidity in term infants delivered by elective caesarean section: cohort study. BMJ, 2008.PMID 18077440
  14. [14]Betran AP, Ye J, Moller AB, et al. Trends and projections of caesarean section rates: global and regional estimates. BMJ Glob Health, 2021.PMID 34130991
  15. [15]Betran AP, Torloni MR, Zhang JJ, et al. WHO Statement on Caesarean Section Rates. BJOG, 2016.PMID 26681211
  16. [16]Boerma T, Ronsmans C, Melesse DY, et al. Global epidemiology of use of and disparities in caesarean sections. Lancet, 2018.PMID 30322584

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