The Medical and Surgical Practice of NaProTECHNOLOGY, 183-261, 2004

Chapter 15: Scientific Foundations of the CrMS

Thomas W Hilgers

Author affiliations
  • Pope Paul VI Institute for the Study of Human Reproduction, Omaha, Nebraska. ROR

Abstract

The CREIGHTON MODEL FertilityCare System (CrMS) rests on a decades-long body of research demonstrating that cervical mucus functions as a physiologically regulated biological valve, opening predictably at the periovulatory estrogen rise and closing in the post-Peak phase. Chapter 15 of Hilgers (2004) synthesizes hormonal, ultrasound, cytologic, and biophysical evidence to establish that a woman's external observation of her Peak Day reliably identifies the fertile window, and documents the system's effectiveness data for both achieving and avoiding pregnancy across a five-study meta-analysis of nearly 1,900 couples.

Topics

what is the Creighton Model FertilityCare System, how does cervical mucus predict ovulation, is the Creighton Model as effective as birth control, what does Peak Day mean in fertility charting, how accurate is fertility awareness for getting pregnant, what is NaProTECHNOLOGY based on, can charting my cycle help identify reproductive health problems, what is a biological valve in fertility, how does cervical mucus change throughout the cycle

Cite this article

Hilgers, T. W. (2004). Chapter 15: Scientific Foundations of the CrMS. *The Medical and Surgical Practice of NaProTECHNOLOGY*, 183-261.

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