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Friday, January 18, 2019

Chronic Endometritis and IVF

Brief description of study
Embryo quality is known to be a very important determinant to predict the implantation and pregnancy rate in IVF patients, however, the role of uterine integrity or endometrial receptivity cannot be overlooked. Chronic endometritis (CE) is an inflammation of the endometrium diagnosed by the presence of plasma cells in the endometrial stroma. There is not only no census on the definition of CE, the current literature on the impact of CE on reproductive outcome is controversial and consists only of retrospective studies with small sample sizes. Although there is a presumption that CE is related to poor IVF outcome, this belief has not been proven.

 Prospective cohort study

 Infertility clinics of 2 academic medical centers

 Patients between the ages of 21 and 35 years old undergoing their first IVF cycle will be invited to participate.

 Main Outcome Measures:
The primary outcome will be ongoing pregnancy after 12 weeks estimated gestational age (EGA) with previously documented fetal cardiac motion. Secondary outcomes will include pregnancy loss rate as defined by chemical pregnancy, blighted ovum or loss of fetal cardiac motion before 12 weeks EGA.

 Materials and Methods:
The cycle prior to IVF, patients will undergo an in-office endometrial biopsy on cycle days 19-24. Samples will be stained for CD138 and the number of plasma cells will be quantified. The number of plasma cells in a sample that yields the best sensitivity and specificity for pregnancy will be determined by a Receiver-Operator-Curve. This number will then be used as a dichotomous variable to assign categories of "positive for CE" and "negative for CE." Pregnancy and miscarriage rates will then be determined in the positive and negative CE sample with Chi Square Analysis. A secondary sub analysis will be performed to determine pregnancy and miscarriage rates in patients who declined to participate in the study.

 Expected Results:
 The investigators hypothesize that higher rates of CE will be found in women failing to conceive with IVF and with subsequent first-trimester miscarriage.

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