Please select the eligibility criteria that correspond to the clinical trial below.
Title: Effect of Oxytocin Antagonists on Implantation Success Rates of Frozen-thawed Embryo Transfer
Brief Summary: Uterine contraction has a negative impact on implantation and pregnancy rates. Inhibition of oxytocin receptors decreases uterine contraction frequency both on pregnant and non-pregnant women. Atosiban has been studied as an oxytocin antagonist to decrease uterine contraction frequency in order to increase implantation and pregnancy rates in assisted reproduction. Previous studies have studied 37,5mg total dose which was used both before and during embryo transfer, and found atosiban to be effective in increasing implantation and pregnancy rates. We aim to use a single dose of 6,75mg atosiban before embryo transfer, in order to decrease the dose and cost and possibly introduce a simpler protocol. Our study will also be the first randomized clinical study which investigates the effect of atosiban on frozen-thawed embryo transfer cycles.


Options:
A: Inclusion Criteria:

* IVF/ ICSI patients below 38 years
* 2e to 6e IVF-cycle

Exclusion Criteria:

* patients with endocrinological diseases or problems
B: Inclusion Criteria:

* PCOS diagnostic criteria

  * 2003 American Society for Reproductive Medicine(ARSM)/European Society of Human Reproduction and Embryology(ESHRE) consensus meeting guideline
  * include two out of three

    1. Oligo - or anovulation
    2. Clinical or/and biochemical hyperandrogenism
    3. Polycystic ovaries on ultrasound, exclusion of other etiologies( ≥ 12 follicles(2-9 mm diameter) in each ovary or ovarian volume(0.5 x length x width x thickness) ≥ 10cm3)
* Anatomical normal uterus
* Normal level of thyroid hormone

Exclusion Criteria:

* Severe endometriosis(stageIII, IV)
* Endometrial thickness less than 7mm in late follicular phase
* Severe male infertility factor, non-obstructive azoospermia
* History of ectopic pregnancy or abortion over the last 3 months
* Unexplained abnormal uterine bleeding
* Congenital adrenal hyperplasia
* Androgen secreting tumor
* Cushing syndrome
* Concurrent administration of metformin, ovulation induction drugs, oral contraceptives within previous 3 months
* Chronic disease(liver, kidney, severe heart failure, DM)
* Any pathology of genital tract
* History of alcohol abuse
* Refuse of study participate consent
C: Inclusion Criteria:

1. 3 or more than 3 embryo implantation failure histories previously (or the number of high-quality embryos transplanted is \>4);
2. Age \<40 years；
3. Ultrasound or HSG showed normal uterine cavity, endometrium on transplantation day is ≥ 8mm;
4. There's at least one good quality embryo on transplantation day.

Exclusion Criteria:

1. Patients using donor sperm or donor eggs;
2. Patients have obvious uterine cavity abnormalities;
3. There was a clear hydrosalpinx;
4. Natural cycles or IVM patients;
5. Patients who cancel the due to the transfer due to various reasons, such as the failure of fertilization, or ovarian transitional stimulus syndrome (OHSS);
6. Abnormal karyotype;
7. Blastocyst transplantation patients.
D: Inclusion Criteria:

* Infertile women applied to assisted reproduction clinic
* Follicle stimulating hormone \< 12
* Body mass index \< 25
* Patients whom antagonist protocol will be used
* Patients whom at least 2 good-quality embryos obtained
* Patients who are volunteer

Exclusion Criteria:

* Severe male factor (Sperm concentration \<5 M/ml, progressive sperm motility \<%10)
* Uterine anomaly
* Hydrosalphynx
* Difficult embryo transfer
* Patients who previously had a diagnosis of endometriosis and / or adenomyosis
* Endocrine problems (hypothyroidism, hyperthyroidism, hyperprolactinemia, premature ovarian insufficiency)
* Having more than 3 in vitro fertilization failure
* Refusing to participate

Answer: D