The Medical and Surgical Practice of NaProTECHNOLOGY, 707-712, 2004
Chapter 53: Dating the Beginning of Pregnancy
Author affiliations
- Pope Paul VI Institute for the Study of Human Reproduction, Omaha, Nebraska. ROR
Abstract
NaProTECHNOLOGY uses the Peak Day of the Creighton Model chart — the last day of the most fertile-type cervical mucus — as the reference point for dating conception, providing a biologically grounded alternative to last menstrual period dating that remains accurate across irregular cycles. Precise cycle-based dating improves the clinical interpretation of early pregnancy hormone levels, ultrasound findings, and obstetric gestational age assignments, reducing unnecessary interventions triggered by apparent growth discordance.
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Cite this article
Hilgers, T. W. (2004). Chapter 53: Dating the Beginning of Pregnancy. *The Medical and Surgical Practice of NaProTECHNOLOGY*, 707-712.
Hilgers TW. Chapter 53: Dating the Beginning of Pregnancy. The Medical and Surgical Practice of NaProTECHNOLOGY. 2004:707-712.
Hilgers, T. W. "Chapter 53: Dating the Beginning of Pregnancy." *The Medical and Surgical Practice of NaProTECHNOLOGY*, 2004, pp. 707-712.