How does an intrauterine contraceptive device (IUCD) work?
The primary action of all IUCDs is the induction of a foreign-body reaction within the endometrium. This sterile inflammatory process is toxic to gametes, primarily spermatozoa, and effectively prevents viable sperm from passing into the fallopian tubes. The copper bearing device has an independent toxic effect on spermatozoa. The progestin-releasing devices produce changes in endometrial architecture and function that reduce the potential for implantation of a fertilized egg. The progestin effect on the cervical mucus also reduces the penetrability of sperm. There are two IUCDs available in Canada at present. The Nova-T IUCD is a copper IUCD and Mirena is a progestin releasing intrauterine system (IUS).
Related Questions
- What should be done if a woman experiences amenorrhoea or a delayed period with an intrauterine contraceptive device (IUCD) in situ?
- Are there any specific tests or examinations that must be performed prior to inserting an intrauterine contraceptive device (IUCD)?
- What follow-up is required after insertion of an intrauterine contraceptive device (IUCD)?
