| 摘要 |
A calculator used for displaying menstrual cycle synchronization of donors and recipients during embryo transfer procedures includes first, second and third members aligned with one another. In accordance with a preferred embodiment, the first member is a disc having the days of the menstrual cycle of the recipient thereon; the second member is a disc having dates of the monthly calendar thereon, and the third member is a disc having the days of the donor's menstrual cycle thereon. By aligning a window in the third disc with the seventeenth through nineteenth day of the recipient's menstrual cycle as displayed on the first disc, the days of the donor's cycle are substantially fixed. By then aligning the monthly dates on the second disc with the corresponding day on either the first or second disc, one may determine either when the recipient's cycle must start to synchronize with donor egg development or when the donor's egg must be stimulated in order to be available for transfer to the recipient when the recipient is most receptive to a successful transfer.
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