Emergency contraceptives are effective if administered within following period after unprotected intercourse :
Correct Answer: 120 hours
Description: Ans. is d i.e. 120 hours The standard recommendation is to sta emergency contraceptive not later than 72 hours. The greatest protection is offered if it is taken within 12 hours, as postponing the dose by 12 hours raises the chances of pregnancy by almost 50% For this reason, the treatment should be initiated as soon as possible after sexual exposure. Note : But here the question says - till how / long are ECs effective or till how long can they be adminsitered. "The tables can be offered upto 120 hours, but its efficacy decreases with the longer coital - drug interval." According to current concepts in contraceptions and women health also -Emergency contraception can be given upto 5 days. This is becasue "Emergency contraception is not an aboifacient i.e. it will not act after implantation has occured. This is also the basis for the window period of 5 days for use effectiveness of EC ,as the whole proocess from deposition of sperms to implantation takes about 5 days."
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Gynaecology & Obstetrics
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