LOINC
Version 2.73

11823-2Fetal Head Diameter.biparietal/Diameter.occipital derived by USActive

Term Description

Ratio of biparietal diameter (short axis) to occipito-frontal diameter (long axis) x 100
Source: Regenstrief LOINC

Part Description

LP64601-5   Diameter.biparietal
The biparietal diameter (BPD) measurement, using outer-to-outer caliper positioning, is dependent on the head shape of the fetus (using the cephalic index). Due to inaccuracies that can occur with this measurement, the BPD is no longer routinely used for gestational age estimation or determining the appropriateness of fetal size later in pregnancy. Head circumference is the preferred method for measuring fetal head size. [PMID:25044000] Source: Regenstrief LOINC

Fully-Specified Name

Component
Diameter.biparietal/Diameter.occipital
Property
LenRto
Time
Pt
System
Head^Fetus
Scale
Qn
Method
US.derived

Additional Names

Short Name
Fet BPD/OFD der US

Basic Attributes

Class
OB.US
Type
Clinical
First Released
Version 1.0j-a
Last Updated
Version 2.73
Order vs. Observation
Observation
Common US Lab Results Rank
11639

Reference Information

Type Source Reference
Article NCBI PubMed Hadlock FP, Deter RL, Carpenter RJ, Park SK. Estimating fetal age: effect of head shape on BPD. Am J Roentgenol. 1981;137(1):83-85. Link to PubMed

Language Variants Get Info

zh-CNChinese (China)
直径.二顶骨/直径.枕骨:长度比率:时间点:头部^胎儿:定量型:超声.导出法
fr-BEFrench (Belgium)
Diamètre.bipariétal/Diamètre.occipital:Longueur rapport:Temps ponctuel:Tête^Foetus:Quantitatif:US. Dérivé
it-ITItalian (Italy)
Diametro.biparietale/Diametro.occipitale:LenRto:Pt:Testa^feto:Qn:Ecografia.derivata
pt-BRPortuguese (Brazil)
Diâmetro.biparietal/Diâmetro.occipital:LenRto:Pt:Crânio^feto:Qn:US.obtido
es-ARSpanish (Argentina)
ecografía.derivada:relación de longitud:punto en el tiempo:cabeza^feto:cuantitativo:US.DERIVED
es-MXSpanish (Mexico)
Diámetro.biparietal / Diámetro.occipital:LenRto:Punto temporal:Cabeza ^ feto:Cuantitativo:US.derived

Example Units

Unit Source
{ratio} Example UCUM Units

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=11823-2