To send content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about sending content to .
To send content items to your Kindle, first ensure email@example.com
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about sending to your Kindle.
Note you can select to send to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
This chapter presents a study which recognized that the resistance index (RI) of the uterine arteries was around 0.88 until day 13 of a 28-day cycle. The researchers measured the pulsatility index (PI) in 8 women with spontaneous cycles, 20 women undergoing induction of ovulation with clomiphene citrate, and 11 women undergoing controlled ovarian stimulation for in-vitro fertilization with gonadotropin-releasing hormone agonists (GnRH-a), human menopausal gonadotropin (hMG), and human chorionic gonadotropin (hCG). The intraovarian PI showed a gradual decrease from the early follicular (1.05) through the periovulatory (0.99) to the mid-luteal phase (0.85). The detection and quantification of follicular vascularity with pulsed color Doppler is used to predict oocyte recovery rate and hence may be useful in determining the most appropriate time to administer hCG. Oocyte/embryo selection for transfer may benefit from a brief color Doppler examination of each follicle at aspiration and pooling of oocytes with respect to follicles.