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  2. Estimated date of delivery - Wikipedia

    en.wikipedia.org/wiki/Estimated_date_of_delivery

    A median of 288 days (274 days from the date of ovulation) for first-time mothers and 283 days (269 days from the date of ovulation) for mothers with at least one previous pregnancy was found by a 1990 study of 114 white, private-care patients with uncomplicated pregnancies and spontaneous labor. The authors suggest that excluding pregnancies ...

  3. Selective reduction - Wikipedia

    en.wikipedia.org/wiki/Selective_reduction

    The procedure is also called multifetal pregnancy reduction. [3] The procedure is most commonly done to reduce the number of fetuses in a multiple pregnancy to a safe number, when the multiple pregnancy is the result of use of assisted reproductive technology ; outcomes for both the mother and the babies are generally worse the higher the ...

  4. Multiple birth - Wikipedia

    en.wikipedia.org/wiki/Multiple_birth

    A study in 2013 involving 106 participating centers in 25 countries came to the conclusion that, in a twin pregnancy of a gestational age between 32 weeks 0 days and 38 weeks 6 days, and the first twin is in cephalic presentation, planned Cesarean section does not significantly decrease or increase the risk of fetal or neonatal death or serious ...

  5. Superfecundation - Wikipedia

    en.wikipedia.org/wiki/Superfecundation

    Superfecundation most commonly happens within hours or days of the first instance of fertilization with ova released during the same cycle. Ovulation is normally suspended during pregnancy to prevent further ova becoming fertilized and to help increase the chances of a full-term pregnancy. However, if an ovum is atypically released after the ...

  6. Pregnancy rate - Wikipedia

    en.wikipedia.org/wiki/Pregnancy_rate

    For optimal pregnancy chance, there are recommendations of sexual intercourse every 1 or 2 days, [14] or every 2 or 3 days. [15] Studies have shown no significant difference between different sex positions and pregnancy rate, as long as it results in ejaculation into the vagina . [ 16 ]

  7. Gravidity and parity - Wikipedia

    en.wikipedia.org/wiki/Gravidity_and_parity

    The obstetric history of a female who has had four pregnancies, one of which was a miscarriage before 20 weeks, would be noted in the GPA system as G 4 P 3 A 1 and in the GP system as G 4 P 3. The obstetric history of a female who has had one pregnancy of twins with successful outcomes would be noted as G 1 P 1+1. [16]

  8. Heterotopic pregnancy - Wikipedia

    en.wikipedia.org/wiki/Heterotopic_pregnancy

    The gold standard for diagnosing a heterotopic pregnancy is the transvaginal ultrasound. However, the sensitivity of the transvaginal ultrasound for diagnosing a heterotopic pregnancy has been found to range from 26.3% to 92.4%. [5] Therefore, both clinical symptoms and ultrasound imaging are used to make the diagnosis.

  9. Controlled ovarian hyperstimulation - Wikipedia

    en.wikipedia.org/wiki/Controlled_ovarian_hyper...

    [14] [needs update] The optimal dosage is mainly a trade-off between the pregnancy rate and risk of ovarian hyperstimulation syndrome. [13] A meta-analysis came to the result that the optimal daily recombinant FSH stimulation dose is 150 IU/day in presumed normal responders younger than 39 years undergoing IVF. [ 15 ]

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