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Culture Systems: Embryo Culture And Monozygotic Twinning, Amy Sparks
Culture Systems: Embryo Culture And Monozygotic Twinning, Amy Sparks
Amy E.T. Sparks
The incidence of monozygotic twinning in pregnancies achieved with assisted reproductive technologies (ART) is significantly higher than spontaneously conceived pregnancies. The factors associated with ART that predispose the embryos to splitting are not well-characterized. Assisted hatching and extended embryo culture are two ART laboratory methods that have been risk factors for monozygotic twinning. The methods and strategies that may be employed to avoid monozygotic twinning are discussed in this chapter.
The Efficacy And Cost Effectiveness Of Embryo Cryopreservation Compared With Other Assisted Reproductive Techniques, Bradley Van Voorhis, Craig Syrop, B. Allen, Amy Sparks, D. Stovall
The Efficacy And Cost Effectiveness Of Embryo Cryopreservation Compared With Other Assisted Reproductive Techniques, Bradley Van Voorhis, Craig Syrop, B. Allen, Amy Sparks, D. Stovall
Amy E.T. Sparks
OBJECTIVE: To evaluate the efficacy and cost effectiveness of embryo cryopreservation compared with other assisted reproductive techniques (ARTs). DESIGN: Retrospective review of medical records and health care costs. SETTING: Tertiary care academic medical school ART program. PATIENTS: For determination of the efficacy of cryopreserved ET, we analyzed 610 patients undergoing the first 1,000 oocyte retrievals in our program. For determination of cost effectiveness, we analyzed the costs associated with 334 initiated ART cycles in 1992. MAIN OUTCOME MEASURES: The ongoing pregnancy rate (PR) per initiated cycle and per oocyte retrieval. The medical costs associated with each procedure. RESULTS: The transfer …