Version 2.74

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

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

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 Test Rank Get Info
11639

Language Variants Get Info

Tag Language Translation
es-AR Spanish (Argentina) ecografía.derivada:relación de longitud:punto en el tiempo:cabeza^feto:cuantitativo:US.DERIVED
es-MX Spanish (Mexico) Diámetro.biparietal / Diámetro.occipital:LenRto:Punto temporal:Cabeza ^ feto:Cuantitativo:US.derived
fr-BE French (Belgium) Diamètre.bipariétal/Diamètre.occipital:Longueur rapport:Temps ponctuel:Tête^Foetus:Quantitatif:US. Dérivé
Synonyms: BPD
it-IT Italian (Italy) Diametro.biparietale/Diametro.occipitale:LenRto:Pt:Testa^feto:Qn:Ecografia.derivata
Synonyms: Eco Ecografia ostetrica Punto nel tempo (episodio) Rapporto lunghezze
pt-BR Portuguese (Brazil) Diâmetro.biparietal/Diâmetro.occipital:LenRto:Pt:Crânio^feto:Qn:US.obtido
Synonyms: ; BPD; BPD/Diam.occipital; Cephalic index; CI; Diam; DIA; OFD; Length Ratio; Point in time; Random; Skull; Brain; Intracranial; Cranium; Cranial; Fet; Fetal; Quantitative; QNT; Quant; Quan; der; Ultrasound; ULS; Sonogram; Sonography; Sonograph; Echography; OBSTERICAL.ULTRASOUND; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; Echoencephalogram; Echoencephalography
zh-CN Chinese (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
Synonyms: BPD/OD BPD;二顶径;二顶径（Biparietal diameter，BPD，双顶径）;二顶骨直径;双顶径;左右颅骨顶部直径;直径.二顶;直径.二顶的;直径.二顶骨的;直径.左右颅顶骨;直径.左右颅顶骨的;直径.顶骨宽;直径.顶骨宽的;胎儿双顶径;胎头双顶径 一种超声检查，用于确定几个脑部结构的位置和大小，从而系统地检查脑部和脊髓可疑的软组织疾病。 二顶径/枕部直径 二顶径/枕骨直径 二顶骨直径/枕骨直径 产科 产科.超声;产科.超声.印象与测量指标;产科学.超声;产科学.超声.印象与测量指标;产科学检查与测量指标.超声.印象与测量指标;产科学超声印象与测量指标 产科学 产科学超声.导出法;产科学超声.推导法;产科学超声.派生法;产科学超声.衍生法 双顶径/枕部直径 双顶径/枕骨直径 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 大脑;头;头壳;头的;头盖;头盖的;头盖骨;头部的;头颅;头颅内;头颅内的;头骨;脑;脑壳;脑的;颅;颅侧;颅的;颅骨;颅骨内;颅骨内的 头^胎儿 头部超声检查方法 头部超声波 头部超声波检查方法 导出法;推导法;推论法;衍生法 时刻;随机;随意;瞬间 枕骨直径 直径.二顶/直径.枕 直径.二顶/直径.枕部 直径.二顶的/直径.枕的 直径.二顶的/直径.枕部的 直径.二顶骨的/直径.枕骨的 胎;超系统 - 胎儿 脑回波图 脑回波描记仪 脑回波描记仪术 超声检查方法;超声检查法;超声波;超声波检查方法;超声波检查法 长度比

Example Units

Unit Source
{ratio} Example UCUM Units

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