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Maternal heart rate in pregnancy
American Journal of Obstetrics and Gynecology, 1985Serial morning heart rates were obtained from 10 women runners prior to and during pregnancy. By 8 weeks' menstrual age, maternal heart rate had risen 8 bpm with an overall pregnancy-associated increase of 16 bpm. Potential mechanisms are discussed.
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Strategies to Increase Pregnancy Rates
American Association of Bovine Practitioners Conference Proceedings, 1999To achieve a timely first-service conception rate, dairymen must have an efficient method of heat detection. It is difficult to precisely control time to first service based on spontaneous expression and detection of estrous behavior on a herd basis. The most efficient way to reduce days open would be to reduce the number of missed heats and increase ...
Carlos A. Risco +2 more
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Pregnancy rates and birth rates
Population Studies, 1962Summary In this article the relationships between pregnancy rates per hundred woman-years of exposure and annual birth rates per thousand population are analyzed by means of a simple population model The assumptions underlying this model are: a rate of 80 pregnancies per hundred woman-years of non-contraceptive exposure, a foetal mortality rate of 20 ...
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Obesity and lower teenage pregnancy rates [PDF]
BMJ, 2014 It seems heartening that unplanned conception and pregnancy rates in teenagers are decreasing in England,1 New Zealand,2 and the United States.3 However, we should be cautious in thinking that our social programmes and availability of new family planning technologies are the only solutions to this problem.
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Fetal heart rate in early pregnancy
Early Human Development, 1990Heart rates were measured by transvaginal sonography twice weekly in ten first trimester fetuses in women who conceived after in-vitro fertilization (IVF) or zygote intra-fallopian transfer (ZIFT). From week 6 to week 9 of menstrual age a rapid increase of the mean heart rate was observed from 113 to 167 beats per min, followed by a slow decrease to ...
Marijke van Heeswijk +2 more
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Cortisol Production Rate. VIII. Pregnancy
The Journal of Clinical Endocrinology & Metabolism, 1968ABSTRACT Cortisol production rates (CPRs) and urinary 17-hydroxycorticosteroid (17-OHCS) excretion were studied in 13 subjects in mid- and late pregnancy and compared with those of nonpregnant women.
Frederic M. Kenny +2 more
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Ovulation and Pregnancy Rates With Clomiphene Citrate
Obstetrics & Gynecology, 1978A review of recent experience with clomiphene citrate at the Yale-New Haven Medical Center yields the following conclusions: 1) Clomiphene citrate administered at high doses (150 mg and 200 mg) is effective in inducing ovulation in women who would otherwise have failed to conceive if treatment were restricted to only lower dosage regimens.
Leon Speroff +2 more
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Reducing rates of teenage pregnancy
Independent Nurse, 2010The battle to cut teenage pregnancy rates is far from over, writes.
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Pregnancy rates with bisected bovine embryos
Theriogenology, 1984A method for producing identical twin calves is described in which 5.5 to 7.5 day bovine embryos were bisected using a fine microsurgical blade. The resulting demi-embryos were transferred surgically or nonsurgically to the uterine horn ipsilateral to the corpus luteum of synchronous recipients (+/- 2 days), one demi-embryo per recipient.
R.P. Elsden +2 more
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GnRHa flare and IVF pregnancy rates
International Journal of Gynecology & Obstetrics, 2003AbstractObjectives: GnRH agonist administered early in the menstrual cycle (flare) causes an endogenous discharge of FSH and LH. Flare has been used in conjunction with gonadotropin ovarian stimulation for IVF ‘poor responders’. There is an ongoing controversy regarding whether flare protocols improve pregnancy rates in ‘poor responders’.
Edmond Confino +2 more
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