Thyroid function during controlled ovarian hyperstimulation as part of in vitro fertilization.
نویسندگان
چکیده
OBJECTIVE To determine the exact nature and timing of alterations in thyroid function throughout controlled ovarian hyperstimulation (COH). DESIGN Prospective cohort study. SETTING University fertility clinic. PATIENT(S) Fifty-seven women undergoing COH as part of planned in vitro fertilization. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Timing and magnitude of change in serum thyroid hormones, including TSH, total and free T(4), E(2), and thyroxine-binding globulin (TBG), measured at six time points from before stimulation to 2 weeks after serum pregnancy test. RESULT(S) Geometric mean serum TSH increased during stimulation, peaking 1 week after hCG administration compared with baseline (2.44 vs. 1.42 mIU/L), as did free T(4) (1.52 vs. 1.38 ng/dL) and TBG (32.86 vs. 21.52 μg/mL). Estradiol levels increased, peaking at hCG administration (1743.21 vs. 71.37 pg/mL). Of 50 women with baseline TSH ≤ 2.5 mIU/L, 22 (44.0%) had a subsequent rise in TSH to >2.5 during or after COH. The pattern of change over time in TSH concentrations was significantly influenced by baseline hypothyroidism and whether pregnancy was achieved. CONCLUSION(S) COH led to significant elevations in TSH, often above pregnancy appropriate targets. These findings were particularly evident in women with preexisting hypothyroidism and may have important clinical implications for screening and thyroid hormone supplementation.
منابع مشابه
Renal and Hepatic Functions After a Week of Controlled Ovarian Hyperstimulation During In Vitro Fertilization Cycles
Background One the main aspects of an in vitro fertilization (IVF) cycle is to avoid any possible systemic damage to women undergoing to a controlled ovarian hyperstimulation (COH). The aim of this work is to evaluate renal and hepatic function blood tests in patients undergoing controlled ovarian hyperstimulation during IVF cycles. MaterialsAndMethods All patients received a long stimulation p...
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متن کاملRenal and Hepatic Functions after A Week of Controlled Ovarian Hyperstimulation during In Vitro Fertilization Cycles
BACKGROUND One the main aspects of in vitro fertilization (IVF) cycle is to avoid any possible systemic damage on women undergoing a controlled ovarian hyperstimulation (COH). The aim of this work is to evaluate renal and hepatic function blood tests in patients undergoing controlled ovarian hyperstimulation during IVF cycles. MATERIALS AND METHODS We performed a prospective cohort analysis. ...
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عنوان ژورنال:
- Fertility and sterility
دوره 97 3 شماره
صفحات -
تاریخ انتشار 2012