martes, 18 de noviembre de 2008
New fertilization technics
Currently, in due to improvements in ultrasound imaging, surgery is no longer necessary for most in vitro fertilization patients. Technological progress has allowed for the use of a sonographically-guided needle to replace the surgical procedure which previously was used to recover eggs. This procedure, called Transvaginal Oocyte Retrieval, requires neither hospitalization nor general anesthesia. Instead, the woman undergoes about two weeks of intensive preparation, including hormonal therapy with fertility drugs. Blood tests and ultrasound scans of the ovaries are used to determine the optimal time to retrieve the eggs from the ovary, and at the proper time, an outpatient procedure under local anesthesia will allow the female's eggs to be visualized by ultrasound and retrieved from the ovary by placing a needle through the vaginal wall. The woman experiences pain similar to a pap smear and is able to return home and resume normal activities. The embryologist places the sperm with the eggs when they are ready for fertilization, maintaining them in a laboratory dish in a nutrient mixture which acts as a substitute for the environment that would otherwise have been provided by the fallopian tubes
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