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Initiation of Translation

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Related Experiment Video

Updated: Feb 5, 2026

Intrauterine Telemetry to Measure Mouse Contractile Pressure In Vivo

Intrauterine Telemetry to Measure Mouse Contractile Pressure In Vivo

Published on: April 6, 2015

Changes in Intrauterine Device Position From Initial Insertion to Check Up.

Grace Swain¹, Karen Mizia^1,2, Elizabeth Luxford²

¹Royal North Shore Hospital Sydney New South Wales Australia.

Australasian Journal of Ultrasound in Medicine

|February 4, 2026

Summary

Intrauterine contraceptive devices (IUDs) rarely migrate after insertion in Australian women. Post-insertion ultrasounds are generally unnecessary unless symptoms arise, simplifying IUD care.

Keywords:

hormonal contraception intrauterine device migration intrauterine devices long‐acting reversible contraception ultrasonography

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Last Updated: Feb 5, 2026

Intrauterine Telemetry to Measure Mouse Contractile Pressure In Vivo

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A Rat Model of Mild Intrauterine Hypoperfusion with Microcoil Stenosis

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Establishment of a Rat Model for Intrauterine Adhesions via Dual Injury: Curettage and Infection

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Published on: October 3, 2025

Area of Science:

Reproductive Health
Medical Devices
Ultrasound Technology

Background:

Limited data exists on intrauterine contraceptive device (IUD) migration in Australian populations.
Current guidelines offer ambiguous recommendations for post-insertion IUD check-ups (5-8 weeks).
The clinical utility of pelvic ultrasounds for verifying IUD position requires further elucidation.

Purpose of the Study:

To assess IUD migration and position changes in an Australian cohort.
To determine the clinical usefulness of post-insertion ultrasounds for IUD placement.

Main Methods:

A retrospective cohort study was conducted over three years across eight Sydney sites.
Data was collected from 645 cases involving IUD insertion or exchange under ultrasound guidance.

Main Results:

Initially, 5% of IUDs were sub-optimally positioned; 98.5% of optimally positioned IUDs remained stable post-procedure.
1.3% of IUDs shifted to a suboptimal position, often associated with uterine anomalies (75%).
Of sub-optimally positioned IUDs, 84% migrated to the optimal fundal position within 5-8 weeks.

Conclusions:

IUDs inserted correctly in the fundus are unlikely to change position without underlying uterine anomalies or prior hysterotomy.
Most IUDs migrate to an appropriate position, suggesting routine 5-8 week checks and ultrasounds may be unnecessary.
Ultrasound should be reserved for symptomatic patients or when IUD strings are not palpable.