Objective: To investigate the endocrinological and endometrial factors in women with unexplained recurrent miscarriage
Setting: Recurrent miscarriage clinic, Jessop Hospital for Women, Sheffield
Participants; One hundred and forty-four women with unexplained recurrent (more than 3) miscarriages
Methods: A blood sample was obtained in early follicular phase (day 3–5) to measure follicle stimulating hormone, luteinising hormone, prolactin, androgens and thyroid function; daily blood/urine samples were obtained from mid-follicular phase to measure luteinising hormone until the luteinising hormone surge was identified; endometrial biopsy and a further blood sample for progesterone measurement were obtained in the mid-luteal phase. A transvaginal ultrasonography was performed to evaluate ovarian morphology.
Results: Hypersecretion of luteinising hormone or ultrasonographic features of polycystic ovarian disease was present in 8% and 7.8% of women, respectively. The free androgen index was elevated in 14.6% of subjects. In the mid-luteal phase, low progesterone level was found in 17.4% and delayed endometrial development was noted in 27.1% of women. Although women with recurrent miscarriage women and delayed endometrium had significantly lower progesterone levels than those with normal endometrial development, only 8/24 had mid-luteal progesterone levels below 30 nmol/L. Recurrent miscarriage was not associated with hyperprolactinaemia or abnormal thyroid function test.
Conclusions: Endocrinological and endometrial abnormalities are present in about a quarter of women with unexplained recurrent miscarriage.
Source: http://www.blackwell-synergy.com/doi/abs/10.1111/j.1471-0528.2000.tb11670.x
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