Effect of BMI on blood value of patients on HCG day with IUI treatment

Background This study aims to analyze the effect of the body mass index (BMI) on E 2 , P and LH values in females who received intrauterine insemination (IUI) treatment on human chorionic gonadotropin (HCG) day. Methods A total of 2319 cycles of IUI-assisted pregnancy treatment were selected in our hospital. Based on the BMI, female infertility patients are divided into three groups: normal weight group, overweight and obese group. Results For patients with natural cycles and ≤ 35 years old, there were 440, 178 and 197 cases in the three groups, respectively. For patients with natural cycles and > 35 years old, there were 90, 83 and 81 cycles in the three groups, respectively. For patients with induced ovulation cycle and ≤ 35 years old, there were 425, 203 and 516 cases in the three groups, respectively. For patients with induced ovulation cycle and > 35 years old, there were 26, 26 and 54 cases in the three groups, respectively. Conclusion When a patient is ≤35 years old, the BMI affects the E 2 , LH and P values on the day of artificial insemination. However, the BMI is negatively correlated with E 2 , LH and P in IUI on HCG day. After controlling for age and assisted pregnancy, the correlation analysis revealed that the BMI is negatively correlated with hormone E 2 and LH. The higher the BMI was, the lower the levels of hormones E 2 , LH and P became. However, in the present study, the BMI did not significantly improve the clinical pregnancy rate of patients who received IUI.