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Abstract To analyze the changes and predictive value of ovarian hemodynamic parameters and blood flow indexes of women with luteinized unruptured follicle syndrome (LUFS). Methods: 41 women with LUFS (85 cycles) were selected in study group, and 76 infertility women with normal ovulation (144 cycles) were selected in control group from February 2018 to December 2019. The values of ovarian arterial blood pulse index (PI), resistance index (RI), blood flow velocity ratio (S/D), ovarian blood vessel index (VI), blood flow index (FI), and blood vessel flow index (VFI) of the women during early follicular stage, middle follicular stage and periovulation stage were compared between the two groups. The correlation and predictive efficacy of the blood flow index of the women for the occurrence of LUFS were analyzed. Results: In the control group, the RI and S/D values of the ovarian artery on the functional side of the women in the early and mid follicular stages, and periovulation stage had decreased gradually (P<0.001), but the PI value had no change (P>0.05). In the study group, the RI value of the ovarian artery on the functional side of the women in the mid follicular and periovulation stages was significant lower than that of the women in the early follicular stage (P<0.05), and there was no significant difference in the RI value of the ovarian artery on the functional side of the women in the mid follicular and periovulation stages (P>0.05), and there were no significant differences in the PI and S/D values of the women in the early and mid follicular, and periovulation stages (P>0.05). The RI value of the women in the early and mid follicular stages, and periovulation stage, and the S/D value of the women in periovulation stage of the women in the study group were significant higher than those of the women in the control group (P<0.05), but the RI value of the women in the early and mid follicular stages, and periovulation stage had no significant different between the two groups (P>0.05). The VI, FI, and VFI values of the ovarian artery on the functional side of the women in the two groups in the early and mid follicular stages, and periovulation stage had increased gradually, and which of the women in the study group were significant lower than those of the women in the control group (P<0.05). The ovarian artery RI value and blood flow VFI value of the women in the mid follicular and periovulation stages were correlation with LUFS occurrence (P<0.05). The RI value in the mid follicular stage and the RI and VFI values in the periovulation stage had predictive efficiency for LUFS (P<0.001), among them, the RI and VFI values in the periovulation stage had the best predictive efficiency with the cutoff value 1.97, which suggested that when the ovarian blood flow VFI < 1.97 before ovulation of the women, it was the maximum possible LUFS occurrence. Conclusion: The ovarian arterial blood flow hydromechanics and blood flow indexes of women with LUFS are abnormal, so monitoring ovarian blood flow may predict LUFS.
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