Richard J. Fehring is an associate professor of nursing at Marquette University and the research facilitator. Dr. Fehring received his master of science and doctoral degree in nursing science from The Catholic University of America in Washington, DC. He is a past president of the American Academy of Natural Family Planning (NFP) and a certified NFP practitioner and educator.
ACCURACY OF THE OVULON FERTILITY MONITOR TO PREDICT AND DETECT OVULATION
Article first published online: 31 DEC 2010
1998 American College of Nurse Midwives
Journal of Nurse-Midwifery
Volume 43, Issue 2, pages 117–120, March-April 1998
How to Cite
Fehring, R. J. and Schlaff, W. D. (1998), ACCURACY OF THE OVULON FERTILITY MONITOR TO PREDICT AND DETECT OVULATION. Journal of Nurse-Midwifery, 43: 117–120. doi: 10.1016/S0091-2182(97)00151-1
- Issue published online: 31 DEC 2010
- Article first published online: 31 DEC 2010
The purpose of this pilot study was to correlate the three biologic markers of the Ovulon fertility monitor (a long-term predictive peak about 6 days before ovulation, a short-term predictive peak about 1 day before ovulation, and a nadir at the time of ovulation) with the peak in cervical mucus and the luteinizing hormone (LH) surge in the urine. Ten volunteer subjects (mean age 30.2 years) monitored their cervical-vaginal mucus, the surge of LH in the urine with a home assay test, and their vaginal electrical readings (with Ovulon monitors) on a daily basis for one to four menstrual cycles. In 19 of the 21 cycles that indicated a LH surge, there was a strong positive correlation between the LH surge and the peak of cervical-vaginal mucus (r = 0.96, P ≤ .01), and between the LH surge and both the Ovulon nadir and Ovulon short-term predictive peak (r = 0.84, P ≤ .01), and a modest positive correlation between the long-term Ovulon predictive peak and the LH surge (r = 0.62, P ≤ .01). The time of optimal fertility as determined by the peak in cervical mucus, the LH surge, and the Ovulon was similar. The Ovulon has potential as a reusable device to help women determine their fertile period.