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Wednesday, Sep 08, 2010
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Frozen-Thawed Embryo Transfer Survey

Cryopreservation of supernumerary embryos following IVF has been widely practiced as a safe and cost-effective method to increase cumulative pregnancy rates per oocyte retrieval.

The current trend towards decreasing the number of embryos being transferred and the increased implementation of single embryo transfer (SET) policy in many IVF programs emphasize the relevance and importance of frozen embryo transfer (FET).

The following survey relates to current practice, opinions and therapeutic approaches to patient preparation for FET.The survey was suggested and composed by Dr.A.Weissman The personal data requested aims only to assure the safety and authenticity of the data submitted. No personal data will be published.
Name
Name Of IVF Unit
E-mail
1- Country
Country
2- Number of estimated IVF cycles performed by the unit annually
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
3- Please estimate the annual number of FET cycles in your unit
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
cycles
4- What is your preferred timing for embryo freezing?





5- Are you using a time period between the fresh and frozen cycle?



6- In patients with regular ovulatory cycles, what is your preferred method for patient preparation for FET?





7- In patients undergoing Natural Cycle - FET, what is your preferred monitoring approach?







8- In patients undergoing Natural Cycle - FET, how do you determine the ovulation day?









9- In patients undergoing Natural Cycle - FET, is there a minimum endometrial thickness at the time of ovulation necessary for embryo thawing and transfer?









10- In patients undergoing Natural Cycle - FET, do you add luteal phase support?





11- In patients undergoing Natural Cycle - FET, if you add luteal phase support?







12- In patients undergoing Natural Cycle - FET, if you add luteal support, when do you stop it?







13- In ovulatory patients undergoing hormone replacement therapy - FET, do you prefer to use GnRH agonist pituitary suppression for the cycle?



14- In ovulatory patients undergoing hormone replacement therapy - FET, do you prefer to use GnRH antagonist pituitary suppression for the cycle?



15- Which route of administration do you prefer for estrogen?





16- Which route of administration do you prefer for progesterone?







17- In patients undergoing hormone replacement therapy - FET, what is your preferred monitoring approach?





18- In patients undergoing hormone replacement therapy - FET, is there a minimum endometrial thickness necessary at the time of progesterone administration for embryo thawing and transfer?








19- In patients undergoing hormone replacement therapy - FET, when do you stop hormone replacement?






20- In patients undergoing ovulation induction - FET, do you prefer to use GnRH agonist or GnRH antagonists?





21- In patients undergoing ovulation induction - FET, do you prefer to use clomiphene citrate or gonadotropin?



22- Do you thaw embryos on the day of ET or 1 day earlier and allow overnight culture ?



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