Intrauterine devices in early pregnancy: Findings on ultrasound and clinical outcomes

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Abstract

Objective: The objective of this study was to describe ultrasound findings, clinical symptoms, and outcomes of first-trimester pregnancies with intrauterine devices (IUDs). Study Design: This was a retrospective review of 42 women with history of IUD placement and positive serum human chorionic gonadotropin in the first trimester. Results: There were 31 intrauterine pregnancies (IUPs), 3 ectopic pregnancies, and 8 pregnancies of unknown location. Of 36 IUDs visualized, 15 were normally positioned and 21 malpositioned. Of 31 IUPs, 8 IUDs were within the endometrium, 17 were malpositioned, and 6 were not seen. Indications included bleeding (14 of 31), pain (12 of 31), and missing strings (5 of 31); 11 had no symptoms. Of 26 IUPs with known pregnancy outcomes, 20 were term deliveries and 6 had failed pregnancies of 20 weeks or less. Conclusion: More than half of IUDs identified in the first trimester were malpositioned. IUP was 3 times as likely with a malpositioned or missing IUD. Three quarters of the IUPs with known outcomes had term deliveries. Symptoms were not predictive of IUD malposition.

Original languageEnglish (US)
JournalAmerican Journal of Obstetrics and Gynecology
Volume204
Issue number5
DOIs
Publication statusPublished - May 2011

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Keywords

  • complications of intrauterine devices
  • intrauterine device
  • intrauterine device in pregnancy

ASJC Scopus subject areas

  • Obstetrics and Gynecology

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