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Wednesday, May 4, 2011

Will Limits on In Vitro Fertilization Save Lives?

Assistive-reproductive technologies that result in multiple births may be behind many of the admissions to neonatal intensive care units. As many as 17% of newborns receiving care at one Canadian hospital were from such multiple births, according to a study led by Keith Barrington of the University of Montreal.

Of these infants, roughly 91%, or 75 babies, were twins or triplets whose mothers used in vitro fertilization or IVF. Health problems among them were serious: “There were six deaths, five babies who developed a brain bleed, and four babies who developed a potentially blinding eye condition,” Barrington reports.

Barrington and his colleagues now advise that the number of eggs implanted during an IVF procedure should be limited to one to prevent twinning. While this could decrease the number of babies born with birth defects, it may also result in women being forced to undergo additional IVF procedures before conception.

New techniques for pre-implantation genetic screening, such as that developed by researchers at the Universitat Autònoma de Barcelona (UAB), could help doctors improve the chances for genetically healthier fertilized embryos prior to IVF implantation. Using the new technique, doctors can screen embryos for almost all structural and numerical chromosomal abnormalities and implant the embryos within 12 hours, which increases chances for successful pregnancy.

Source: http://www.wfs.org/


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