Repeat-breeder (RB) cows are a major source of economic waste due to their decreased fertility. Embryo transfer (ET) is an alternative tool to improve the fertility of RB cows. The aims of the present study were to evaluate the effects of recipient parity and the season on pregnancy rates following ET in RB Japanese Black beef cattle. Embryos were transferred nonsurgically to recipients, consis...

OBJECTIVES This report presents detailed pregnancy rates for 1990-2004, updating a national series of rates extending since 1976. Data from the National Survey of Family Growth (NSFG) are used to interpret trends in teenage pregnancy and in total pregnancy and fertility rates. METHODS Tabular and graphical data on pregnancy rates by age, race and Hispanic origin, and by marital status are pre...

OBJECTIVE Since the 1990s, pregnancy hypertension rates have declined in some countries, but not all. Increasing rates of early planned delivery (before the due date) have been hypothesised as the reason for the decline. The aim of this study was to explore whether early planned delivery can partly explain the declining pregnancy hypertension rates in Australia. DESIGN Population-based record...

Emerging evidence suggests that assisted hatching (AH) techniques may improve clinical pregnancy rates, particularly in poor prognosis patients; however, there still remains considerable uncertainty. We conducted a meta-analysis to verify the effect of AH on pregnancy outcomes. We searched for related studies published in PubMed, Web of Science, and Cochrane library databases from start dates t...

Background: Focused ultrasound surgery (FUS) is a novel noninvasive surgery that results in localized tissue necrosis without any breech of the skin or other body orifice. MRI guidance provides anatomic visualization and real time thermal feedback. Our goal is to safely extend this therapy to women who desire future pregnancies. Materials and Methods: We have undertaken 4 multisite trials of FU...

The purpose of this systematic review is to evaluate if uterine myomas impact the likelihood of pregnancy and pregnancy loss, and if myomectomy influences pregnancy outcomes in asymptomatic women. There is insufficient evidence to conclude that the presence of myomas reduces the likelihood of achieving pregnancy. However, there is fair evidence that myomectomy (open or laparoscopic) for cavity-...

background: in spite of the great progress in assisted reproductive techniques ( art) and although good quality embryos are transferred pregnancy rates have remained around 30%-35% due to low implantation rates. objective: the aim of this study was to assess and compare the effects of administrating indomethacin or hyoscine suppositories prior to embryo transfer on the pregnancy rate in art cyc...

background: laparoscopic ovarian drilling (lod) is an alternative method to induce ovulation in polycystic ovary syndrome (pcos) patients with clomiphene citrate (cc) resistant instead of gonadotropins. this study aimed to compare the efficacy of unilateral lod (ulod) versus bilateral lod (blod) in cc resistance pcos patients in terms of ovulation and pregnancy rates. materials and methods: in ...

BACKGROUND The objective of this study was to determine the prevalence of Chlamydia trachomatis among both men and women seeking help at an infertility clinic, and to prospectively follow the effect of previous infection on pregnancy rates and pregnancy outcome after a long follow-up period (mean 37 months). METHODS A total of 244 infertile couples was tested for C. trachomatis IgG antibodies...