In reproductive medicine, the first line choice for pharmacological ovulation induction
is with selective oestrogen receptor modulators, with clomiphene citrate (CC) being the most extensively studied.
In the past few years, the usefulness of letrozole for ovulation induction
was investigated (11).
While in-vitro fertilization receives more attention in discussions of infertility treatment, far more couples achieve pregnancies with the techniques of ovulation induction
or combined ovarian stimulation and intrauterine insemination, which further have the advantage of being able to be performed in almost any office or clinic.
Conception is reported in these patients occurring either spontaneously or with ovulation induction
, but carrying successfully through to term is difficult, especially in the later condition (3, 6).
The concern that letrozole use for ovulation induction
could be teratogenic is unfounded based on our data," wrote Dr.
Summary of laboratory analyses used in ART Stage/step Lab tests Infertility evaluation Estradiol, progesterone, LH, FSH, prolactin, DHEA-S, testosterone, TSH, free T4, semen analysis Ovarian stimulation Estradiol, progesterone Ovulation induction
Progesterone Oocyte retrieval None Post-transfer Progesterone Pregnancy monitoring hCG Table 4.
One case resulted in spontaneous ovulation and menstruation, whereas the other required ovulation induction
to produce an oocyte for in vitro fertilization.
Increased monozygotic twinning rate after ovulation induction
People are more likely to experience multiple births if they undergo other fertility treatments, such as ovulation induction
and the drug Clomid,' she said.
In general, vaginal ultrasound studies are recommended for women who are experiencing a new onset of abdominal pain; who have a positive family history for ovarian, breast or colon cancer; and who have been treated with ovulation induction
agents for the treatment of infertility.
For the first fertility treatment, called ovulation induction
, I had to take clomid to stimulate my ovaries and have an internal scan to see how many follicles I had.
Careful monitoring of ovulation induction
(to address excessive egg production) and transfer of appropriate numbers of fertilized eggs in ART procedures are critical components in reducing the risk of multiple births for patients taking infertility drugs.