Gestation calculation

Current pregnancies recorded in Communicare are displayed in the banner.

Pregnancy in the banner

The pregnancy label in the banner may show any of the following:
  • If the gestation can be calculated and is less than 50 weeks, the label reads Pregnant (n/40) + days, where n is the current gestation in weeks.
  • If the gestation can be calculated and is 50 weeks or more, the label reads Pregnancy outcome not recorded
  • If the gestation cannot be calculated, the label reads Pregnant (gestation unknown).
The gestation shown in the banner is calculated in the following way:
  • If an Estimated delivery (by date) is recorded for the current pregnancy, this is used to calculate the gestation based on today's date
  • If there is no Estimated delivery (by date) recorded for the current pregnancy, the Estimated delivery (by ultrasound) is used to calculate gestation based on today's date
  • If no estimated delivery date is recorded for the current pregnancy, the latest Gestation is used based on the date the latest gestation was recorded and today's date
  • If no estimated date and no gestation is recorded for the current pregnancy, the Date of LNMP is used based on today's date

This means that the latest recorded Estimated date of delivery (by date) is in fact the current 'best guess'. For this reason, if a recent ultrasound is deemed to be more accurate that the latest Estimated date of delivery (by date), the latter should be updated with the recent ultrasound estimate.