ARCHETYPE Gestational age (openEHR-EHR-OBSERVATION.gestational_age.v0)

ARCHETYPE IDopenEHR-EHR-OBSERVATION.gestational_age.v0
ConceptGestational age
DescriptionThe estimate or known period or duration of the pregnancy or gestational age of the foetus or new born.
UseTo record the estimated or known gestational age of a pregnancy or new born.
MisuseNot to record the gestational of the foetus at birth. This is recorded in the pregnancy summary.
PurposeTo record the estimated or known gestation age of a current pregnancy or new born at a point in time.
ReferencesMongelli M. Evaluation of Gestation. Medscape Reference. See http://emedicine.medscape.com/article/259269-overview#showall (accessed Jan 2012)

Peek MJ, Devonald KJ, Beilby R, Ellwood D. The value of routine early pregnancy ultrasound in the antenatal booking clinic. Aust N Z J Obstet Gynaecol. May 1994;34(2):140-3.

Geirsson RT, Busby-Earle RM. Certain dates may not provide a reliable estimate of gestational age. Br J Obstet Gynaecol. Jan 1991;98(1):108-9.

Guerrero R, Florez PE. The duration of pregnancy. Lancet. Aug 2 1969;2(7614):268-9.
Copyright© openEHR Foundation
AuthorsAuthor name: Sam Heard
Organisation: NT mEHR Project
Email: sam.heard@oceaninformatics.com
Date originally authored: 2012-01-04
Other Details LanguageAuthor name: Sam Heard
Organisation: NT mEHR Project
Email: sam.heard@oceaninformatics.com
Date originally authored: 2012-01-04
OtherDetails Language Independent{licence=This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/4.0/., custodian_organisation=openEHR Foundation, references=Mongelli M. Evaluation of Gestation. Medscape Reference. See http://emedicine.medscape.com/article/259269-overview#showall (accessed Jan 2012) Peek MJ, Devonald KJ, Beilby R, Ellwood D. The value of routine early pregnancy ultrasound in the antenatal booking clinic. Aust N Z J Obstet Gynaecol. May 1994;34(2):140-3. Geirsson RT, Busby-Earle RM. Certain dates may not provide a reliable estimate of gestational age. Br J Obstet Gynaecol. Jan 1991;98(1):108-9. Guerrero R, Florez PE. The duration of pregnancy. Lancet. Aug 2 1969;2(7614):268-9., original_namespace=org.openehr, original_publisher=openEHR Foundation, custodian_namespace=org.openehr, MD5-CAM-1.0.1=EA7904B19BA6D8B6F0ABFB604B7D714A, build_uid=99b4c4f3-0c25-421f-84aa-078e16bfe34e, revision=0.0.1-alpha}
Keywordsgestation, gestational age, conceptional age, maturity
Lifecyclein_development
UID0f1e1aaa-df3d-4d68-9485-2f1702f7c347
Language useden
Citeable Identifier1013.1.4763
Revision Number0.0.1-alpha
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0 weeks..60 weeks
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0 weeks..60 weeks
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  • First trimester [First day of last normal menstrual period until the end of week 12 of a pregnancy.]
  • Second trimester [Beginning of week 13 to the end of week 28 of a pregnancy.]
  • Third trimester [Beginning of week 29 until birth.]
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  • Ultrasound - first trimester [An ultrasound done before 14 weeks gestation.]
  • Ultrasound - second trimester [An ultrasound done between 14 and 28 weeks gestation.]
  • Ultrasound - third trimester [An ultrasound done greater than 28 weeks gestation.]
  • Date of last menstrual period [The date of the first day of the last menstruation.]
  • Date of conception [The date of conception is known.]
  • Uterine examination - first trimester [The size of the uterus before 14 weeks gestation.]
  • Uterine examination - second trimester [The fundal height measured between 14 and 28 weeks gestation.]
  • Uterine examination - third trimester [The fundal height after 28 weeks gestation.]
  • Date of first positive pregnancy test [Date of first positive pregnancy test, ideally involving serial pregnancy tests with a known sensitivity.]
  • Calculated from expected date of birth (EDB) [Calculated back from the expected date of birth.]
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  • Ultrasound - first trimester [An ultrasound done before 14 weeks gestation.]
  • Ultrasound - second trimester [An ultrasound done between 14 and 28 weeks gestation.]
  • Ultrasound - third trimester [An ultrasound done greater than 28 weeks gestation.]
  • Date of last menstrual period [The date of the first day of the last menstruation.]
  • Date of conception [The date of conception is known.]
  • Uterine examination - first trimester [The size of the uterus before 14 weeks gestation.]
  • Uterine examination - second trimester [The fundal height measured between 14 and 28 weeks gestation.]
  • Uterine examination - third trimester [The fundal height after 28 weeks gestation.]
  • Date of first positive pregnancy test [Date of first positive pregnancy test, ideally involving serial pregnancy tests with a known sensitivity.]
  • Calculated from expected date of birth (EDB) [Calculated back from the expected date of birth.]
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