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Hum. Reprod. Advance Access published online on December 22, 2005
Human Reproduction, doi:10.1093/humrep/dei442
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© The Author 2005. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org
Received October 6, 2005
Revised November 8, 2005
Accepted November 22, 2005

Article

Factors affecting endometrial and subendometrial blood flow measured by three-dimensional power Doppler ultrasound during IVF treatment

Ernest Hung Yu Ng 1 *, Carina Chi Wai Chan 1, Oi Shan Tang 1, William Shu Biu Yeung 1, and Pak Chung Ho 1

1 Department of Obstetrics and Gynaecology, The University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China

* To whom correspondence should be addressed.
Ernest Hung Yu Ng, E-mail: nghye{at}hkucc.hku.hk


  Abstract

BACKGROUND: No information exists in the literature regarding the factors affecting the blood flow towards the endometrial and subendometrial regions during IVF treatment. METHODS: We examined the effect of women’s age, their smoking habits, their type of infertility (i.e. primary or secondary) and parity, causes of infertility and serum estradiol (E2) concentration on endometrial and subendometrial blood flows as measured by a three-dimensional (3D) power Doppler ultrasound during IVF treatment. All patients received a standard long protocol of ovarian stimulation and serum E2 concentration was determined on the day of hCG. 3D ultrasound examination with power Doppler was performed on the day of oocyte collection to determine vascularization index (VI), flow index (FI) and vascularization flow index (VFI) of endometrial and subendometrial regions. RESULTS: The age of women, their smoking habits, their types of infertility and parity and causes of infertility had no effect on the endometrial and subendometrial 3D power Doppler flow indices. There was a negative correlation between serum E2 concentration and endometrial FI (r = -0.109; P = 0.006). CONCLUSIONS: Endometrial blood flow in IVF treatment was negatively affected by serum E2 concentration only.

Keywords: endometrial and subendometrial blood flow/IVF/three-dimensional power Doppler.
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