ARCHETYPE Gestation assertion (openEHR-EHR-OBSERVATION.gestation_assertion.v0)

ARCHETYPE IDopenEHR-EHR-OBSERVATION.gestation_assertion.v0
ConceptGestation assertion
DescriptionA statement or declaration by a clinician about the estimated or known duration of an active pregnancy at a specific point-in-time, usually based on EDD estimations and used as the basis for clinical decision-making.
UseTo record the estimated or known duration of an active pregnancy at a point in time, especially to provide clinical context for associated pregnancy-related findings or assessments. For example: in the context of an antenatal consultation, an assertion by the clinician that the history, findings, assessments and plans were recorded on the basis of an assertion that the gestation of the pregnancy was 32 weeks.
MisuseNot to record the historical gestational age of the fetus at or after birth. This is recorded in the CLUSTER.birth_detail.
PurposeTo record the estimated or known duration of an active pregnancy 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=1FC0ADBACFC434B9FE18DCD9CD10CC68, build_uid=097b26e3-218f-4051-9337-c4797a4f7894, revision=0.0.1-alpha}
Keywordsgestation, gestational age, conceptional age
Lifecyclein_development
UID19de240d-26a0-49f4-a81e-a611b7ef23bc
Language useden
Citeable Identifier1013.1.4763
Revision Number0.0.1-alpha
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  • Norwegian Bokmål: Vebjørn Arntzen, Oslo University Hospital, varntzen@ous-hf.no

    • , subjectOfData=unconstrained, archetypeTranslationTree=null, topLevelToAshis={state=[], contacts=[], details=[], description=[], content=[], provider=[], data=[ResourceSimplifiedHierarchyItem [path=/data[at0001]/events[at0002]/data[at0003]/items[at0004], code=at0004, itemType=ELEMENT, level=4, text=Gestational age, description=Estimated duration of an active pregnancy., comment=Commonly this is estimated using the same method used to calculate the agreed or active 'Estimated Date of Delivery (EDD)' - frequently using the onset of the last menstrual period (LMP), or calculated from the measurement of fetal parameters during a pregnancy ultrasound., uncommonOntologyItems=null, occurencesFormal=0..1, occurencesText=Optional, cardinalityFormal=null, cardinalityText=null, subCardinalityFormal=null, subCardinalityText=null, dataType=DV_DURATION, bindings=null, values=Allowed values: weeks, days
    0 weeks..60 weeks
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    0 weeks..60 weeks
    , extendedValues=null], ResourceSimplifiedHierarchyItem [path=/data[at0001]/events[at0002]/data[at0003]/items[at0020], code=at0020, itemType=ELEMENT, level=4, text=Trimester, description=Duration of pregnancy grouped into 12-14 week intervals., comment=null, uncommonOntologyItems=null, occurencesFormal=0..1, occurencesText=Optional, cardinalityFormal=null, cardinalityText=null, subCardinalityFormal=null, subCardinalityText=null, dataType=DV_CODED_TEXT, bindings=null, values=
    • 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.]
    , extendedValues=null], ResourceSimplifiedHierarchyItem [path=/data[at0001]/events[at0002]/data[at0003]/items[at0019], code=at0019, itemType=ELEMENT, level=4, text=Comment, description=Narrative description about the assertion of gestation, not captured in other fields., comment=null, uncommonOntologyItems=null, occurencesFormal=0..1, occurencesText=Optional, cardinalityFormal=null, cardinalityText=null, subCardinalityFormal=null, subCardinalityText=null, dataType=DV_TEXT, bindings=null, values=, extendedValues=null]], identities=[], other_participations=[], activities=[], protocol=[ResourceSimplifiedHierarchyItem [path=/protocol[at0017]/items[at0006], code=at0006, itemType=ELEMENT, level=2, text=Gestational age basis, description=The rationale underpinning the calculation of gestational age., comment=null, uncommonOntologyItems=null, occurencesFormal=0..1, occurencesText=Optional, cardinalityFormal=null, cardinalityText=null, subCardinalityFormal=null, subCardinalityText=null, dataType=CHOICE, bindings=null, values=Choice of:
    •  Coded Text
      • 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.]
      • Onset of Last Menstrual Period (LMP) [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.]
      • Expected Date of Delivery (EDD) [Calculated back from the agreed or active EDD.]
    •  Text
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    •  Coded Text
      • 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.]
      • Onset of Last Menstrual Period (LMP) [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.]
      • Expected Date of Delivery (EDD) [Calculated back from the agreed or active EDD.]
    •  Text
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