S. L. Tan

Endometriosis, which may be defined as the presence and proliferation of endometrial tissue outside the uterine cavity, causes pain and infertility for millions of women worldwide. Studies suggest a prevalence of 0.5 to 5% in fertile and 25…

OBJECTIVES: To assess the effect of short-term (2-3 weeks) pituitary suppression and controlled ovarian stimulation on ovarian and uterine artery Doppler measurements during the in vitro fertilization (IVF) treatment cycle and to compare th…

OBJECTIVE: To compare the incidence and severity of local side effects of urinary-derived gonadotropins administered s.c. and i.m.. DESIGN: Prospective randomized study of women undergoing IVF treatment. SETTING: Tertiary referral center …

PURPOSE: Our purpose was to assess the effect of pretreatment with oral contraceptives (OCs) on the formation of functional ovarian cysts during pituitary suppression with gonadotropin-releasing hormone (GnRH) agonists, subsequent follicula…

OBJECTIVE: Our purpose was to study the hemodynamic changes in the uterine and intraovarian vessels during the normal menstrual cycle and to relate the vascular changes to hormonal index values. STUDY DESIGN: Seven women who had bilateral …

A total of 96 women undergoing in vitro fertilization (IVF) treatment were studied on the day of human chorionic gonadotropin (hCG) administration by transvaginal ultrasonography with color and pulsed Doppler ultrasound. We assessed endomet…

OBJECTIVE: To compare the midluteal uterine artery impedance to blood flow as measured by the pulsatility index in women with different causes of infertility with that of women with normal fertility and to correlate this with endometrial th…

In the decade since the birth of the first child conceived as a result of in vitro fertilization and embryo transfer much has been achieved in the field of assisted conception. Although in vitro fertilization (IVF) was successful first for …