Pregnancy_Due_Dates v.1
A calculator used to calculate EDD (Expected Date of Delivery), LMP (Last Menstrual Period), Gestational age or EDC (Expected Date of Conception) using one of the 3 dates
Pregnancy Due Date calculator helps to track and estimate the progress to term of a pregnancy. The tool uses either last menstrual period (LMP), current gestational age (GA), OR expected due date to determine the other two variables, plus estimated date of conception.
To help track and calculate an estimation of the due date of a pregnancy both forward from the LMP and backwards from the Due Date. The tool uses either last menstrual period (LMP), current gestational age (GA), OR expected due date to determine the other two variables, plus estimated date of conception. To calculate pregnancy due date from LMP: Determine last date of LMP. Add 40 weeks to the date. Add another 7 days to the date 40 weeks from the LMP. (OR use the First day of the Last Menstrual Period as has been done here)
Do not use when the cycles are not regular and LMP cannot be reliably used. Employ using other tools and investigations to support the results.
Ref. 1: Chervenak FA, Skupski DW, Romero R, et al: How accurate is fetal biometry in the assessment of fetal age?. Am J Obstet Gynecol 1998; 178:678
openEHR-EHR-OBSERVATION.pregnancy_due_date
