Galen eCalcs - Calculator: Pregnancy Due Dates

Description

Calculates pregnancy dates, forward from last period or backward from due date. This tool calculates three values based on a known date of either last menstrual period, date of conception, current gestational age, or due date.

Calculator Search/Filter Keywords

At the calculator level, eCalcs comes delivered with default keywords that can be leveraged in the "Search/Filter" field to enable Specialty or System driven calculator searching. The following calculator keywords are delivered by default for the Pregnancy Due Dates calculator:

Specialties

Critical Care
Family Practice
Obstetrics

Systems

Reproductive

Calculator Configuration Options

Preference Name	Valid Range	Description
Publishing	Checked / Unchecked	When checked, the calculator will display for users on the front end. When unchecked, the calculator WILL NOT display for users on the front end.
Orderable Item Override	(BLANK) / G-PregDD	“(BLANK)” indicates that the global configuration options for Orderable Item will be used. “G-PregDD” indicates that the calculator specific value will be used and can display the specific calculator name in the chart output.

Calculator Inputs

Input	Mapping Type	Description
Last Menstrual Period	Vitals / No Default Mappings	Date of patient’s last menstrual period
Date of Conception	Manual Input	Date of Conception
Current Gestational Age	Manual Input	Current Gestational Age
Due Date	Manual Input	Due Date

Calculator Outputs

Output	Mapping Type	Description
Estimated gestational age	Result	Estimated gestational age of the embryo or fetus
Estimated last menstrual period	Result	Backwards estimation of the last menstrual period
Estimated due Date	Result	Estimated due date of birth
Estimated date of conception	Result	Backwards estimation of the date of conception

References

http://www.mdcalc.com/pregnancy-due-dates-calculator/