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Comparative trial of the force required for, and pain of, removing GyneFix® versus Gyne-T380S® following randomised insertion
  1. Rachel E D'Souza, MRCOG, Specialist Registrar in Sexual and Reproductive Health1,
  2. Walli Bounds, SCM, Principal Research Fellow2 and
  3. John Guillebaud, FRCSEd, FRCOG, Medical Director and Professor of Family Planning and Reproductive Health3
  1. Margaret Pyke Centre, London, UK
  2. Department of Obstetrics and Gynaecology, University College London and Research Co-ordinator, Margaret Pyke Centre*, London, UK
  3. Margaret Pyke Centre*, London, UK
  1. Correspondence Dr R E D'Souza, Margaret Pyke Centre, 73 Charlotte Street, London W1T 4PL, UK. Tel: +44 (0)20 7530 3631. E-mail: Rachel.D'Souza{at}camdenpct.nhs.uk

Abstract

Objective To assess the force required for, and pain of, removal of the GyneFix® as compared with T-framed intrauterine devices (IUDs).

Design A comparative trial following patient-blinded randomisation in an outpatient clinic setting.

Method Women requesting an IUD for emergency contraception were fitted with either a GyneFix or a Gyne-T380S®. For those requesting removal of the IUD, visual analogue scores were used to assess their perception of the associated pain, and a Newton dynamometer was used to measure the force required to remove the device.

Results Removal required significantly more force for GyneFix as compared with Gyne-T380S (p = 0.004), but there was no significant difference in pain perceived by women during removal. Interestingly, anticipated pain was worse than actual pain experienced.

Conclusion Although more force is needed to remove the GyneFix as compared with the Gyne-T380S, this does not translate into more pain.

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  • Accepted January 22, 2003.

Footnotes

  • * Now retired.

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