Edd calculation techniques

The estimated due date (EDD or EDC) is the date that spontaneous onset of labor is expected to occur. The due date may be estimated by adding 280 days ( 9 months and 7 days) to the first day of the last menstrual period (LMP). This is the method used by "pregnancy wheels"

1. CALCULATING EDD
JYOTI VARUN
BSC NURSING 4
TH
YEAR
ERA’S COLLEGE OF NURSING

2. EDD is term referred in calculating the due date of
Pregnancy .EDD is called as estimated date of delivery.
Nagele’s rule is generally used in estimating the due
date.

3. HOW TO CALCULATE
EDD
ESTIMATATED DATE OF DELIVERY

4. Naegele’s formula
•EDD-(ESTIMATED DATE OF DELIVERY)
•(+1Year -3months +7day)
•Form LMP(LAST MENSTRUAL PERIOD)

5. •STEPS-1
•For estimated date of deliver calculation

6. Let’s consider the example
Last date of menstrual period
23 October 2020

7. STAP-2
•Apply LMP (23 October 2020) date in formula
•+1year =23 oct 2021
• -3 months=23 July 2021
• +7 day = 30 July 2021
•Due date of pregnancy= 30 July 2021

8. Thank you