RISK OF PRE-TERM DELIVERY IN PATIENTS WITH PREVIOUS PRE-TERM DELIVERY AND/OR ABORTION

Authors

  • M. J. N. C. Keirse,

    1. Nuffield Department of Obstetrics and Gynaecology, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DU
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    • *

      Department of Obstetrics and Gynaecology, University of Leyden, Academic Hospital, Rijnsburgerweg 10, Leyden, The Netherlands.

  • R. W. Rush,

    1. Nuffield Department of Obstetrics and Gynaecology, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DU
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  • A. B. M. Anderson,

    1. Nuffield Department of Obstetrics and Gynaecology, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DU
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  • A. C. Turnbull

    1. Nuffield Department of Obstetrics and Gynaecology, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DU
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Summary

Patients with a history of two or more pregnancies which ended spontaneously before 37 weeks gestation had an increased risk of spontaneous pre-term labour and delivery in future pregnancies. This increased risk related mainly to previous second trimester abortions and not to previous first trimester abortions. Patients with one previous spontaneous pre-term labour and delivery had a 37 per cent risk, and those with two or more pre-term deliveries a 70 per cent risk of again delivering pre-term. There appeared to be no beneficial effect of cervical suture on the incidence of pre-term delivery in these patients.

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