Abstract
To evaluate the effect of low-dose dexamethasone on patients with elevated early follicular progesterone levels in IVF-ET treatment. Randomized controlled trial. In vitro fertilization (IVF) centre. A total of 459 patients undergoing a first IVF/ICSI cycle. If progesterone concentration exceeded 1.9nmol/L on days 3-4 of ovarian stimulation, the patients in dexamethasone (DEX) group were treated with oral dexamethasone 0.75mg/d, and the patients in control group received no extra treatment. The cumulative live-birth rate (per cycle started) in 2years. The total dose of gonadotropins (1987±536 IU in DEX group vs 2135±701 IU in control group, P=0.009) and the serum concentrations of progesterone on human chorionic gonadotropin (HCG) day (3.1±1.4nmol/L in DEX group vs 4.0±1.3nmol/L in control group, P<0.001) were both significantly lower in DEX group than that in control. No significant differences between the two groups were observed in the number of oocytes, two pronuclear (2PN) embryos and clinical pregnancy rate. In addition, the cumulative live-birth rate was significantly higher in the DEX group than that in controls (70.0% vs 61.1%, P=0.029, 95% confidence interval: 1.01-2.19). Progesterone secretion can be suppressed by dexamethasone, and dexamethasone may sensitize the ovary to gonadotropin stimulation in IVF treatment. In addition, the cumulative live-birth rate was significantly higher in the DEX group than in controls, and the obstetric and neonatal outcomes support the safety of DEX treatment in IVF.
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