January 11, 2012 |
The number of embryos transferred during in vitro fertilization has been a controversial topic for many years because multiple births are linked to much higher rates of medical problems for both mothers and babies as well as huge healthcare costs. A study published Wednesday, one the largest analyses on the issue, concluded that doctors can consider transferring two embryos in some women but that there is no justification for transferring three or more embryos in any patient. Several countries have already enacted legislation to bar transfers of two or more embryos -- or more than one embryo among women who have a good chance of pregnancy.
December 4, 2013 |
Triplets are out, singletons are in and twins are holding steady. So says a new study in the New England Journal of Medicine that examined birth trends in the United States from1971 to 2011. The authors of the report, from the Centers for Disease Control and Prevention and other institutions, attribute the shift to professional guidelines urging fertility doctors to transfer only one or two embryos to their patients hoping to get pregnant. Those guidelines were first issued by the Society for Assisted Reproductive Technology in 1998, the same year that rates of triplet, quadruplets and even higher-order multiple births peaked in the U.S. Overall, the proportion of actual births that involved more than one baby rose from 1.8% in 1971 to 3.5% in 2011.
September 23, 2010
Doctors and scientists are still learning about what effects in vitro fertilization may have on the health of children. But a new study of children's test scores provides evidence that IVF conception "does not have any detrimental effects on a child's intelligence or cognitive development," the author says. Researchers looked at the academic test scores of 423 Iowa children ages 8 to 17 who were conceived by IVF and at the test scores of 372 matched peers from the same schools. They also analyzed data on the parents of the IVF children, including ethnicity, education, age and marital status.
July 19, 2010 |
In vitro fertilization treatment can be emotionally grueling and prohibitively expensive, and some people decide they can't — they absolutely can't — go through it again. If only there was a way to accurately predict the chance that such treatments would lead to a real-life bundle of crying, needy, with-you-for-18-years-minimum joy. Stanford University researchers say they've done it, at least for women who've already had one round of IVF. In research published online Monday in Proceedings of the National Academy of Sciences, they explain their model for predicting the odds that a live birth will result from IVF treatment.
March 19, 1995 |
These days, most of Dr. Mark V. Sauer's patients are past their reproductive primes. In the past five years, about 200 women in their 40s and 50s have attempted to get pregnant via donor eggs at the USC-IVF Program. About 75% of those midlife patients are trying for their first child, Sauer says. He is straightforward about their chances. Infertile older women get pregnant at the same rates as infertile younger women.
CALIFORNIA | LOCAL
April 10, 2013 |
About 10% of married couples suffer from infertility - the inability to conceive a child naturally. Through the better part of the 20th century, physicians considered this a minor and perhaps irrelevant problem, one that contributed overall to society by keeping the birthrate down. British biologist Robert Edwards thought differently. He was among the first to fully appreciate the frustration and depression the condition engendered in its victims and the benefits that could arise from reversing it. Along the way, he met resistance from religious conservatives who insisted that life must begin only through intercourse, not artificially, and from fellow scientists who resented the fact that he spoke frequently with the media about both his research and the ethical implications.