Answer:
Intra Uterine Devices are presently
available as
(a) Non-medicated lUDs (e.g., Lippes
loop).
(b) Copper releasing lUDs (e.g.,
Cu-T, Cu-7, Multiload 375).
(c) Hormone releasing IUDs (e.g.
progestasert, LNG-20).
Mode of Action of Hormonal
Contraceptives
The hormones releasing IUDs,
make the uterus unsuitable for implantation and the cervix hostile to the
sperms. Progesterone can also be used as injections and implants (slow release
of hormones) to inhibit ovulation.
Advantages of Hormonal
Contraceptives
Administration of progestogens
or progestogen-oestrogen combinations or IUDs within 72hrs of intercourse have
been found to be effective as emergency contraceptives as they could be used to
avoid possible pregnancy due to rape or causal unprotected intercourse.
Disadvantages of Hormonal
Contraceptives
(i) IUDs are suggested as ideal
contraceptives for the females but they can have serious side effects.
(ii) Can cause allergic
reaction.
(iii) If displaced, can cause
tissue damage and profuse bleeding.
(iv) IUDs can damage the normal
hormonal balance and later even if desired, pregnancy may not be achieved.
(v) Artificial intake can
disrupt normal hormonal interactions in the body system.
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