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Write short note on any three of the fol...

Write short note on any three of the following each with two or three important points:
(c) Copper releasing IUDs

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Copper releasing IUDs They are commonly called copper-T having ionised copper. It slowly diffuses at the rate of around 50 mg/day. It has a local antifertility effect by bringing about the release of toxic cytokines. These IUDs suppress the motility and fertilising ability of sperms.
The device is to replaced every 3-5 years when copper release slows down due to calcium deposition, e.g. Cu-T, Cu-7, Multiload 375 and Paragard.
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