This study aims to compare the efficacy, in terms of progesterone levels and clinical outcomes, of two different presentations of micronized vaginal progesterone (400 mg vs. 200 mg) used in endometrial preparation in artificial cycle (AC) for embryo transfer. This is a non-inferiority, retrospective case-control study, with at least 200 cycles analyzed (at least 100 per arm) and the primary outcome is the serum progesterone level on the day of the embryo transfer.
Study Type
OBSERVATIONAL
Enrollment
347
The artificial endometrial preparation for an embryo transfer with the use of 400 mg vaginal tablet (one tablet twice a day) or 200 mg (two tablets twice a day)
Instituto Bernabeu
Alicante, Valencia, Spain
Serum progesterone level
Time frame: On the day of embryo transfer
Need for additional progesterone supplementation
Time frame: assessed on the day of the embryo transfer
Clinical results (ongoing pregnancy and miscarriage rate)
Time frame: assessed on the day of the pregnancy test and during the pregnancy evolution
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