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  4. Cu ions released from copper-releasing intra uterine devices (IUDs)

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Q. $Cu$ ions released from copper-releasing intra uterine devices (IUDs)

AIPMTAIPMT 2010Reproductive Health

Solution:

Intra uterine devices (IUDs) are inserted by doctors or expert nurses in the uterus through vagina. These intra uterine devices are available as the non- medicated IUDs (e.g., Lippes loop), copper releasing IUDs (CuT, Cu7, Multiload 375) and the hormone releasing IUDs (Progestasert, LNG-20). IUDs increase phagocytosis of sperms within the uterus and the Cu ions released suppress sperm motility and the fertilising capacity of sperms. The hormone releasing IUDs, in addition, make the uterus unsuitably for implantation and the cervix hostile to the sperms.