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Risk of shoulder dystocia in second delivery: does a history of shoulder dystocia matter?

Abstract

OBJECTIVE

Our aim was to estimate the relative and absolute risk of shoulder dystocia in the second delivery according to history of shoulder dystocia and offspring birthweight.

STUDY DESIGN

A retrospective cohort study including all women in Norway with 2 consecutive singleton vaginal deliveries with fetus in cephalic presentation, during the period 1967-2005 (n = 537,316).

RESULTS

In the second delivery shoulder dystocia occurred in 0.8% of all women. In women with a prior shoulder dystocia the recurrence risk was 7.3%. Most cases of shoulder dystocia in second delivery were in women without such history (96.2%). Offspring birthweight was the most important risk factor for shoulder dystocia in second delivery: crude odds ratio, 292.9 (95% confidence interval, 237.8-360.7) comparing birthweight > 5000 g with 3000-3499 g.

CONCLUSION

Prior shoulder dystocia increased the risk of shoulder dystocia in the second delivery. However, offspring birthweight was by far the most important risk factor.

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  • Publisher Full Text
  • Authors+Show Affiliations

    ,

    Department of Obstetrics and Gynecology and Medical Faculty Division, Akershus University Hospital, University of Oslo, Oslo, Norway.

    , ,

    Source

    MeSH

    Adult
    Birth Injuries
    Birth Weight
    Dystocia
    Female
    Humans
    Infant, Newborn
    Labor Presentation
    Norway
    Parity
    Pregnancy
    Recurrence
    Registries
    Retrospective Studies
    Risk Factors
    Shoulder
    Young Adult

    Pub Type(s)

    Journal Article

    Language

    eng

    PubMed ID

    19268881

    Citation

    Overland, Eva A., et al. "Risk of Shoulder Dystocia in Second Delivery: Does a History of Shoulder Dystocia Matter?" American Journal of Obstetrics and Gynecology, vol. 200, no. 5, 2009, pp. 506.e1-6.
    Overland EA, Spydslaug A, Nielsen CS, et al. Risk of shoulder dystocia in second delivery: does a history of shoulder dystocia matter? Am J Obstet Gynecol. 2009;200(5):506.e1-6.
    Overland, E. A., Spydslaug, A., Nielsen, C. S., & Eskild, A. (2009). Risk of shoulder dystocia in second delivery: does a history of shoulder dystocia matter? American Journal of Obstetrics and Gynecology, 200(5), pp. 506.e1-6. doi:10.1016/j.ajog.2008.12.038.
    Overland EA, et al. Risk of Shoulder Dystocia in Second Delivery: Does a History of Shoulder Dystocia Matter. Am J Obstet Gynecol. 2009;200(5):506.e1-6. PubMed PMID: 19268881.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Risk of shoulder dystocia in second delivery: does a history of shoulder dystocia matter? AU - Overland,Eva A, AU - Spydslaug,Anny, AU - Nielsen,Christopher S, AU - Eskild,Anne, Y1 - 2009/03/09/ PY - 2008/06/17/received PY - 2008/10/08/revised PY - 2008/12/22/accepted PY - 2009/3/10/entrez PY - 2009/3/10/pubmed PY - 2009/5/19/medline SP - 506.e1 EP - 6 JF - American journal of obstetrics and gynecology JO - Am. J. Obstet. Gynecol. VL - 200 IS - 5 N2 - OBJECTIVE: Our aim was to estimate the relative and absolute risk of shoulder dystocia in the second delivery according to history of shoulder dystocia and offspring birthweight. STUDY DESIGN: A retrospective cohort study including all women in Norway with 2 consecutive singleton vaginal deliveries with fetus in cephalic presentation, during the period 1967-2005 (n = 537,316). RESULTS: In the second delivery shoulder dystocia occurred in 0.8% of all women. In women with a prior shoulder dystocia the recurrence risk was 7.3%. Most cases of shoulder dystocia in second delivery were in women without such history (96.2%). Offspring birthweight was the most important risk factor for shoulder dystocia in second delivery: crude odds ratio, 292.9 (95% confidence interval, 237.8-360.7) comparing birthweight > 5000 g with 3000-3499 g. CONCLUSION: Prior shoulder dystocia increased the risk of shoulder dystocia in the second delivery. However, offspring birthweight was by far the most important risk factor. SN - 1097-6868 UR - https://www.unboundmedicine.com/medline/citation/19268881/full_citation/Risk_of_shoulder_dystocia_in_second_delivery:_does_a_history_of_shoulder_dystocia_matter L2 - https://linkinghub.elsevier.com/retrieve/pii/S0002-9378(08)02445-9 DB - PRIME DP - Unbound Medicine ER -