Frozen-Thawed Embryo Transfer
What is your preferred timing for embryo freezing
- oocyte of 2pn
- Day 2
- Day 3
- Blastocyst
- Varies and indvidualized
Are you using a time period between the fresh and frozen cycle?
- Yes
- No
- Both
In patients with regular ovulatory cycles, what is your preferred method for patient preparation for FET?
- Natural cycle (NC)
- Hormone replacement
- Ovulation induction (i.e., clomiphene, gonadotropins)
- Other
- None
In patients undergoing Natural Cycle - FET, what is your preferred monitoring approach?
- Urinary LH kits
- Ultrasound only
- Blood testing for E2 and progesterone
- Blood testing for E2 progesterone and LH
- A combination of ultrasound and blood testing
- Other
- None
In patients undergoing Natural Cycle - FET, how do you determine the ovulation day?
- A-Continue monitoring until demonstration that ovulation has occurred
- B-Triggering ovulation with hCG
- C-Triggering ovulation with GnRH-Agonist
- A+B
- B+C
- A+C
- All
- Other
- None
In patients undergoing Natural Cycle - FET, is there a minimum endometrial thickness at the time of ovulation necessary for embryo thawing and transfer?
- No
- >5mm
- >6mm
- >7mm
- >8mm
- >9mm
- >10 mm
- Other
- None
In patients undergoing Natural Cycle - FET, do you add luteal phase support?
- No
- Yes, progesterone only
- Yes, progesterone and estrogen
- Other
- None
In patients undergoing Natural Cycle - FET, if you add luteal phase support?
- No support
- IM injection
- Both in the same cycle
- Both IM and vaginal progesterone in different cycles
- Vaginal
- Other
- None
In patients undergoing Natural Cycle - FET, if you add luteal support, when do you stop it?
- At the time of a positive pregnancy test
- At the time fetal heart beat is detected
- At 8 gestational weeks
- At 10 gestational weeks
- At 12 gestational weeks
- Other
- None
In ovulatory patients undergoing hormone replacement therapy - FET, do you prefer to use GnRH agonist pituitary suppression for the cycle?
- Yes
- No
- No such protocol
In ovulatory patients undergoing hormone replacement therapy - FET, do you prefer to use GnRH antagonist pituitary suppression for the cycle?
- Yes
- No
- No such protocol
Which route of administration do you prefer for estrogen?
- Oral
- Transdermal
- Vaginal
- Intramuscular
- No such protocol
Which route of administration do you prefer for progesterone?
- Oral
- Transdermal
- Vaginal
- Intramuscular
- A combination of vaginal and IM in the same cycle
- A combination of oral and IM in the same cycle
- No such protocol
In patients undergoing hormone replacement therapy - FET, what is your preferred monitoring approach?
- Ultrasound only
- Blood testing for E2 and progesterone
- A combination of ultrasound and blood testing
- Other
- No such protocol
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?
- No
- >5mm
- >6mm
- >7mm
- >8mm
- >9mm
- >10 mm
- No such protocol
In patients undergoing hormone replacement therapy - FET, when do you stop hormone replacement?
- At the time of a positive pregnancy test
- At the time fetal heart beat is detected
- At 8 gestational weeks
- At 10 gestational weeks
- At 12 gestational weeks
- >12 gestational weeks
In patients undergoing ovulation induction - FET, do you prefer to use GnRH agonist or GnRH antagonists?
- No
- Agonist
- Antagonit
- Both
- No such protocol
In patients undergoing ovulation induction - FET, do you prefer to use clomiphene citrate or gonadotropin?
- Clomiphene citrate
- Gonadotropins
- No such protocol
Do you thaw embryos on the day of ET or 1 day earlier and allow overnight culture?
- Same day (All embryos)
- One day earlier with overnight culture, If not at blastocyst stage
- Same day only if the embryos are on blastocyst stage
