The development of follicles and endometrium (lining
of the womb) is monitored by blood hormone tests and ultrasound scans.
When the leading follicle measures 18-mm in diameter and the endometrium
is well developed, an hCG
injection is given to time insemination.
Monitoring of the cycle is essential in stimulated
cycles to see whether an excessive number of follicles develop, indicating
the possibility of ovarian
hyperstimulation syndrome (OHHS) and high orders
multiple pregnancy (triplets or more). If more than four mature
follicles develop, most infertility clinics will advise you that either
to withhold hCG injection abandoned the cycle and abstain from intercourse.
Alternatively, convert the treatment cycle to in-vitro
fertilization (IVF) or gamete intra-Fallopian
transfer (GIFT) if appropriate.
