Effects of Pelvic Floor Muscle Massage on the Pregnancy Outcome of Frozen Embryo Transfer in Patients with Thin Endometrium

Abstract

Objective. To observe the effects of pelvic floor muscle mass on the priority outcome of frozen embryo transfer in patients with thin endometrium. Methods. The patients who were prepared for freeze-thaw embryo transfer were randomly divided into the study group and control group. Both groups of patients began to take estradiol valerate tablets 3 mg on the third day of menstrual cycle and added progesterone for luteal support after 14 days. Both groups selected high-quality embryos for embryo transfer on the day of embryo transfer. The basic information, embryo transfer, intimal thickness, intimal type, clinical pregnancy rate, and early abortion rate of the two groups were compared. Results. The intimal thickness of patients in the control group and the study group on the second day of menstruation was ( $0.49\pm 0.03$ ) and ( $0.45\pm 0.02$ ) and that before progesterone was ( $1.17\pm 0.03$ ) and ( $1.20\pm 0.04$ ), respectively ( $P<0.05$ ). At the same time, the number of excellent embryos in the study group was significantly higher than that in the control group ( $P<0.05$ ), but there was no significant difference in the number of transplants between the two groups ( $P>0.05$ ). The proportion of intimal blood flow of type III + II in the study group was significantly higher than that in the control group ( $P<0.05$ ). The main adverse pregnancy outcomes of the whole group included biochemical pregnancy, early abortion, and ectopic pregnancy. The incidence of biochemical pregnancy in the control group and the study group was 63.3% (38/60) and 40.0% (24/60), respectively. The incidence of biochemical pregnancy in the control group was significantly higher than that in the study group, but there was no significant difference in the incidence of early abortion and ectopic pregnancy between the two groups ( $P>0.05$ ). Conclusion. Pelvic floor muscle massage can improve endometrial thickness and subendometrial blood flow, so as to improve the pregnancy rate of frozen thawed embryo transfer patients.