Intraovarian arterial blood flow resistance in oligomenorrheal infertile women

   Purpose : Intraovarian arterial blood flows before and after follicular rupture in ovulation induced cycles were examined by transvaginal color flow Doppler imaging. The changes observed in the intraovarian arterial resistance before and after ovulation in relation to the regularity of menstruation and several other parameters were analyzed. Methods : In a prospective study, 22 patients undergoing infertility treatment in our center were recruited. Patients were divided into two subgroups, according to their menstrual regularity (regular menstrual group and oligomenorrheal group) and 42 cycles were studied. All patients received the same FSH low-dose stimulation treatment. The relationship between the post and preovulatory arterial pulsatility indexes (PI) was analyzed. Cycles that showed a decrease in their PI after ovulation of 10% or more were considered “profoundly decreased cycles.” Cycles from the same patients without ovulatory stimulation (natural cycles) were used as control.