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  • Title: [Detection of ovulation: update on new predictive methods].
    Author: Valente S.
    Journal: Ginecol Clin; 1988; 9(3):276-81. PubMed ID: 12318271.
    Abstract:
    A device invented in the US measuring the concentrations of electrolytes present in the saliva and cervical mucus was first used in italy for early prediction of ovulation with a degree of certitude. The Cue test was also used. The oral sensor was used daily, while the vaginal sensor was employed only on certain days of the cycle measuring ionic concentrations of sodium (Na), calcium (Ca), and potassium (K). The experiment was carried out in 61 menstrual cycles of a group of patients with sterility and infertility. The start of ovulation could be predicted 6 days and 19 hours after the peak oral values. In anovulatory cycles and ovarian polycystic disease, the oral peak values could not be verified. The peak oral values were the first sign of the start of ovulation which ensued after 7 days later with fluctuating high and low values in successive days of the cycle. If the menstrual cycle lasted 26-30 days, the oral peak was registered between the fifth and ninth day of the start of menstruation. If the cycle was long (35 days) one peak did not follow the other: 2 successive ovulations occurred. Abrupt rise of low vaginal values occurred 4 days after the oral peak. THe very low vaginal values indicated the onset of ovulation, but their sudden rise confirmed the day of ovulation. Comparisons of luteinizing hormone (LH) levels and cervical flow have been used for predicting ovulation; nonetheless, the present method has also proved to be valid.
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