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Naegele's Rule

by Cathy Parkes April 04, 2022

A patient's estimated date of delivery can be determined using Naegele's Rule. After determining the first day of the patient's last period, subtract 3 months, then add 1 week and 1 year.

A patient's estimated date of delivery can be determined using Naegele's Rule. After determining the first day of the patient's last period, subtract 3 months, then add 1 week and 1 year. 

Cool Chicken  Cathy's Easier Rule: Add 9 months and 1 week.

Cathy Parkes
Cathy Parkes


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