[Endometrial thickness. Prognostic factor in assisted reproduction?].
BACKGROUND
Most authors coincide that an endometrial thickness lesser than 8 mm has a very low pregnancy rate.


OBJECTIVE
To determine if the measurement of endometrial thickness by vaginal ultrasound has a prognostic value over the pregnancy rate in patients with endometrial preparation for an embryo transfer in cycles of frozen embryos and ovum donation.


METHODS
Retrospective and comparative.


METHODS
A total of 100 cycles were analyzed in the group of frozen embryo transfer; and 71 cycles in the group of ovum donation, we subdivided these two groups into two more groups, one with an endometrial thickness of 8 mm or less and the other with more than 8 mm.


RESULTS
There is a significant difference in the group of frozen embryo transfer regarding the age of the patients (p = 0.009). The pregnancy rate in the group of frozen embryo transfer with an endometrial thickness of 8 mm or less was 14.7% and of 37% in the group with more than 8 mm, with a significant difference (p < 0.01). When we analyzed the cycles of ovum donation, we did not found a significant difference, and we found a pregnancy rate of 47% in the group with endometrial thickness of 8 mm or less, and 40% in the other group.


CONCLUSIONS
In the present study we found that the measurement of the endometrial thickness of more than 8 mm in the patient undergoing a frozen embryo transfer has a predictor value.
Instituto para el Estudio de la Concepción Humana, Centro de Ginecología y Obstetricia de Monterrey, SA
Manuel
M
Leal Almeida
Eric
E
Saucedo de la Llata
Victor
V
Batiza Resendiz
Roberto
R
Santos Haliscak
Pedro
P
Galache Vega
Samuel
S
Hernández Ayup
D000328:Adult; D004624:Embryo Transfer; D004622:Embryo, Mammalian / Q000502:physiology; D004717:Endometrium / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007247:Infertility, Female / Q000628:therapy*; D018587:Oocyte Donation; D011237:Predictive Value of Tests; D011247:Pregnancy; D011379:Prognosis; D012189:Retrospective Studies; D016896:Treatment Outcome; D014463:Ultrasonography