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Changes in blood-flow impedance of the human corpus luteum throughout the luteal phase and during early pregnancy.

Abstract：

OBJECTIVE:To examine changes in blood flow in the corpus luteum throughout the luteal phase and during early pregnancy. DESIGN:Longitudinal and cross-sectional prospective studies. SETTING:University hospital and city general hospital. PATIENT(S):Sixty-one women with normal menstrual cycles and normal luteal function, 13 women with hCG-induced ovulatory cycle, 10 women with luteal phase defect, six women with luteinized unruptured follicle (LUF), and 17 pregnant women (4-10 weeks of gestation). INTERVENTION(S):Blood-flow impedance in the corpus luteum was assessed by transvaginal color-pulsed Doppler ultrasound. MAIN OUTCOME MEASURES:Resistance index (RI) in the corpus luteum. RESULT(S):In the normal menstrual cycle, the RI of the preovulatory follicle was high and significantly decreased after ovulation. Luteal-RI further decreased during the early to midluteal phase but significantly increased during the late luteal phase. Those changes in luteal-RI were similar to those of the hCG-induced ovulatory cycle. Luteal-RI during the midluteal phase was significantly higher in the patients with luteal phase defect than in women with normal luteal function. Luteal-RI of the LUF patients remained high throughout the luteal phase. In pregnant women, luteal-RI remained at the midluteal phase level until 7 weeks of gestation and significantly increased thereafter. CONCLUSION(S):The change in luteal-RI was associated with corpus luteum development and corpus luteum regression. Luteal-RI was closely associated with luteal function.

journal_name

Fertil Steril

journal_title

Fertility and sterility

authors

Tamura H,Takasaki A,Taniguchi K,Matsuoka A,Shimamura K,Sugino N

doi

10.1016/j.fertnstert.2007.10.056

subject

Has Abstract

pub_date

2008-12-01 00:00:00

pages

2334-9

issue

6

eissn

0015-0282

issn

1556-5653

pii

S0015-0282(07)03939-8

journal_volume

90

pub_type

杂志文章,多中心研究

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