نتایج جستجو برای: ivf failure

تعداد نتایج: 381277  

Journal: :Human reproduction 2006
Michael F Costello Michael Chapman Una Conway

BACKGROUND A systematic review of randomized controlled trials (RCTs) comparing whether metformin co-administration with gonadotrophins for ovulation induction (OI) with timed intercourse or IVF improves outcome in women with polycystic ovary syndrome (PCOS). METHODS The quality of reporting of meta-analyses (QUOROM) guidelines were followed. A systematic computerized literature search of thr...

Journal: :Int. J. Fuzzy Logic and Intelligent Systems 2009
Won Keun Min Myeong-Hwan Kim

In this paper, we introduce the concept of IVF weakly m∗-continuous mappings on between IVF minimal spaces and investigate some characterizations for such mappings. Also we study the relationships IVF weakly m∗-continuous mappings and IVF M -compactness. Key ords : IVF minimal space, IVF weakly m∗-continuous, IVF M -compact, almost IVF M -compact, nearly IVF M -compact

2014
Saeed Mohamad Ahmad

Objective: Trying to diagnose clinically some suggested causes of unexplained infertility related to ovum picking, fertilization, embryo growth and implantation and to outline the most suitable management needed for these cases. Design: Prospective controlled diagnostic and management study. Setting: 50 fertile cases as control. Patients: Assessment of ovum picking was determined clinically in ...

2009
Won Keun Min Myeong Hwan Kim Jung Il Kim

We introduce the concepts of IVF m-semiopen sets, IVF m-preopen sets, IVF m-semicontinuous mappings and IVF mprecontinuous mappings on interval-valued fuzzy minimal spaces. We investigate characterizations of IVF m-semicontinuous mappings and IVF m-precontinuous mappings and study properties of IVF m-semiopen sets and IVF m-preopen sets.

Background: The cause of fertilization failure in IVF is most often due to the absence of sperm penetration but the reason why fertilization does not occur when intracytoplasmic sperm injection (ICSI) is applied is not clear. However some intrinsic oocyte problems may also be responsible for fertilization failure. It has been reported that 13% of unfertilized oocytes after IVF show morphologica...

Journal: :Human reproduction 1998
M Moomjy E S Sills Z Rosenwaks G D Palermo

With the introduction of intracytoplasmic sperm injection (ICSI), couples with severe male factor infertility have achieved fertilization and clinical pregnancy rates comparable to other in-vitro fertilization (IVF) patients. However, failure of fertilization still occurs in some patients despite the utilization of microsurgical sperm injection techniques. How such fertilization failure after I...

2014
Suzanne Cochrane

One in six Australian couples currently struggle with impaired fertility. In vitro fertilisation (IVF) has become the assisted reproductive technology (ART) of choice. The IVF process has inherent stresses: the invasive procedures; medication; knowledge that it might be the last possibility for pregnancy; and the high cost. Both authors have observed in different settings (one clinical and the ...

Journal: :Human reproduction 2011
Merle D Benedict Stacey A Missmer Anjel Vahratian Katharine F Berry Allison F Vitonis Daniel W Cramer John D Meeker

BACKGROUND Infertility and early pregnancy loss are prevalent as is exposure to secondhand tobacco smoke (STS). Previous research has suggested a relationship between STS exposure and early pregnancy loss, but studies have been limited by small study sizes and/or imprecise methods for exposure estimation. IVF allows for the collection of follicular fluid (FF), the fluid surrounding the pre-ovul...

Journal: :مجله علوم اعصاب شفای خاتم 0
elham mohammadzadeh shefa neuroscience research center, khatam alanbia hospital, tehran, iran.

infertility, usually defined as the failure of a couple to conceive after 12 months of regular unprotected intercourse. infertility sometimes is occurred with psychoemotional distress such as anxiety, interpersonal problems, disappointment, sadness, anger and depression. during the time infertile couples attempt to get pregnant, women with fertility problems experience more negative emotional f...

Journal: :international journal of reproductive biomedicine 0
maryam eftekhar robabe hosseinisadat ramesh baradaran elham naghshineh3

background: despite major advances in assisted reproductive techniques, the implantation rates remain relatively low. some studies have demonstrated that intrauterine infusion of granulocyte colony stimulating factor (g-csf) improves implantation in infertile women. objective: to assess the g-csf effects on ivf outcomes in women with normal endometrial thickness. materials and methods : in this...

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