Guttmacher Institute. Paediatricians, family physicians and advanced practice nurses should consider having EC available in their respective clinical settings to give to teens at risk for unwanted pregnancy. These disruptions only occur in the cycle in which ECPs were taken; subsequent cycle length is not significantly affected.
Read more. A recent safe period for unprotected sex after menstruation in St. Albert 8 investigating the use of ulipristal acetate for EC found it to be highly effective and well tolerated. Ulipristal acetate ellaOne has similar biologic effects as mifepristone and is approved for emergency contraception in Europe and is expected to become available in the U.
This appointment is an opportune time for counselling the teen about her choices regarding sexual activity, contraception, STIs and safer sex.
Here are some options to consider:. Calculation of effectiveness, and particularly the denominator of the fraction, involves many assumptions that are difficult to validate Levonorgestrel emergency contraception does not affect implantation and is not abortifacient.
Nausea and vomiting are frequent side effects when estrogen-containing EC is given without antiemetics. Administration in the mid-follicular phase causes inhibition of folliculogenesis and reduction of estradiol concentration. IUDs may make menstruation heavier and more painful.
National Center for Biotechnology Information , U. How do ovulation and pregnancy work? Public Health Genomics. Administration in the mid-follicular phase causes inhibition of folliculogenesis and reduction of estradiol concentration.