Version 2.78

Reference Information

Type Source Reference
Article NCBI PubMed Shinozuka N, Okai T, Kohzuma S, Mukubo M, Shih CT, Maeda T, Kuwabara Y, Mizuno M. Formulas for fetal weight estimation by ultrasound measurements based on neonatal specific gravities and volumes. Am J Obstet Gynecol. 1987 Nov;157(5):1140-5. Link to PubMed

Fully-Specified Name

Component
Body weight
Property
Mass
Time
Pt
System
^Fetus
Scale
Qn
Method
US+Estimated from Tokyo 1987

Additional Names

Short Name
EFW by Tokyo87

Basic Attributes

Class
OB.US
Type
Clinical
First Released
Version 2.09
Last Updated
Version 2.70
Order vs. Observation
Observation

Formula (Readable)

Estimated Fetal Weight: EFW = 1.07 * BPD^3 + 3.42 * APAD * TAD * FL; Published Inputs: BPD 3.1 - 10.0 cm, APAD 5 - 15 cm, TAD 5 - 15 cm, FL 1 - 8 cm

Member of these Groups Get Info

LOINC Group Group Name
LG50068-2 Body weight|Mass|^Fetus|ANYMethod

Language Variants Get Info

Tag Language Translation
es-AR Spanish (Argentina) US.ESTIMATED FROM TOKYO.87:masa:punto en el tiempo:^feto:cuantitativo:US.ESTIMATED FROM TOKYO.87
es-MX Spanish (Mexico) Peso corporal:Masa:Punto temporal:^ Feto:Cuantitativo:US+Estimated from Tokyo 1987
it-IT Italian (Italy) Peso corporeo:Massa:Pt:^feto:Qn:Ecografia.stimata da Tokyo 1987
Synonyms: Eco Ecografia ostetrica Punto nel tempo (episodio)
pt-BR Portuguese (Brazil) Peso fetal:Massa:Pt:^Feto:Qn:US.estimado pela tAcela Tokyo.87
Synonyms: ; Wt; Bdy weight; Point in time; Random; Fet; Fetal; Quantitative; QNT; Quant; Quan; by Tokyo87; 87; BPD & APAD & TAD & FL; US.est; predicted; Ultrasound; ULS; Sonogram; Sonography; Sonograph; Echography; Est; estimation; bod; Bodies; OBSTERICAL.ULTRASOUND; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics; EFW; Estimated fetal weight
zh-CN Chinese (China) 体重:质量:时间点:^胎儿:定量型:超声+依据Tokyo的估计法.87
Synonyms: 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 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 时刻;随机;随意;瞬间 标本重量;重 物体 胎;超系统 - 胎儿 胎龄估计法;孕龄估计法 超声.依据Tokyo的胎龄估计法.87;超声.依据Tokyo 1987的胎龄估计法;超声.依据Tokyo87的胎龄估计法 超声.胎龄估计法 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 身体重量 重量

Example Units

Unit Source
kg Example UCUM Units

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=33144-7