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Pregnancy outcomes in women with uterine anomaly: a Swedish nationwide cohort study.

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Waterbirth in Sweden - a comparative study.

Hanna Ulfsdottir1,2, Sissel Saltvedt3, Susanne Georgsson2,4

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|December 31, 2017
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Summary

Waterbirth offers benefits for mothers, including fewer perineal tears and interventions. This study found waterbirths led to a more positive birth experience in a low-risk population, though cord avulsion is a risk.

Keywords:
Birthexperience of childbirthperineal tearswater immersionwaterbirth

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Area of Science:

  • Obstetrics and Gynecology
  • Maternal Health
  • Perinatal Care

Background:

  • Waterbirth, while literature suggests advantages, remains controversial in Sweden.
  • Recent introduction of waterbirth services in Swedish hospitals necessitates comparative outcome studies.

Purpose of the Study:

  • To describe and compare the characteristics and outcomes of waterbirths versus spontaneous vaginal births.
  • To evaluate the impact of waterbirth on perineal tears, labor duration, interventions, and maternal experience.

Main Methods:

  • Retrospective cohort study of 306 waterbirths and 306 spontaneous vaginal births.
  • Analysis of second-degree perineal tears as the primary outcome using logistic regression.

Main Results:

  • Waterbirth was associated with a lower risk of second-degree perineal tears (aOR 0.6, 95% CI 0.4-0.9).
  • Shorter labor duration (6h 3min vs. 7h 52min) and significantly fewer interventions (amniotomy, internal cardiotocography, oxytocin augmentation) were observed in the waterbirth group.
  • Maternal experience was rated higher in the waterbirth group; no differences in Apgar scores or NICU admissions were found. Three cases of umbilical cord avulsion occurred.

Conclusions:

  • Waterbirth in a low-risk population shows positive associations with reduced perineal tears, fewer interventions, shorter labor, and enhanced maternal birth experience.
  • Healthcare providers should be aware of the potential risk of umbilical cord avulsion during waterbirths.