Version 2.77

Part Description

LP19507-0   Gestational age
The age of the conceptus, beginning from the time of fertilization. In clinical obstetrics, the gestational age is often estimated as the time from the last day of the last menstruation which is about 2 weeks before ovulation and fertilization. Source: National Library of Medicine, MeSH 2006

Reference Information

Type Source Reference
Article NCBI PubMed Altman DG, Chitty LS. New charts for ultrasound dating of pregnancy. Ultrasound Obstet Gynecol. 1997 Sep;10(3):174-91. Link to PubMed

Fully-Specified Name

Gestational age
US+Estimated from O-O BPD.Chitty 1997

Additional Names

Short Name
GA from O-O BPD.Chitty 1997

Basic Attributes

First Released
Version 2.09
Last Updated
Version 2.70
Order vs. Observation

Formula (Readable)

Gestational age from Biparietal Diameter: GA = EXP (0.044653*BPD-0.0060089*BPD * ln (BPD) +1.961)SD: ± 0.0002577* BPD+0.03061Derived output: 12-39 weeks Published input: BPD 22-91 mm

Member of these Groups Get Info

LOINC Group Group Name
LG50112-8 Gestational ageTime^Fetus

Language Variants Get Info

Tag Language Translation
es-AR Spanish (Argentina) US.ESTIMATED FROM O-O BPD.CHITTY.97:tiempo:punto en el tiempo:^feto:cuantitativo:US.ESTIMATED FROM O-O BPD.CHITTY.97
es-MX Spanish (Mexico) Edad gestacional:Tiempo:Punto temporal:^ Feto:Cuantitativo:US+Estimated from O-O BPD.Chitty 1997
fr-BE French (Belgium) Age gestationnel:Durée:Temps ponctuel:^Foetus:Quantitatif:US.estimé selon O-O BPD.Chitty 1997
it-IT Italian (Italy) Età gestazionale:Tempo:Pt:^feto:Qn:Ecografia.stimata da O-O BPD.Chitty 1997
Synonyms: Eco Ecografia ostetrica Punto nel tempo (episodio) Tempo (e.g. secondi)
pt-BR Portuguese (Brazil) Idade gestacional:Tempo:Pt:^Feto:Qn:US.estimado pelo diâmetro biparietal externo/externo.Chitty.97
Synonyms: ; GA; Point in time; Random; Fet; Fetal; Quantitative; QNT; Quant; Quan; 97; BPD-OO; US.est; predicted; Ultrasound; ULS; Sonogram; Sonography; Sonograph; Echography; Est; estimation; Gest; Gestation; Prenatal; OBSTERICAL.ULTRASOUND; OBSTERICAL.ULTRASOUND; Obstetrical; Obstetrics
zh-CN Chinese (China) 孕龄:时间:时间点:^胎儿:定量型:超声+依据由外至外的双顶径的估计法.Chitty.97
Synonyms: BPD O-O BPD 二顶径 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 双顶径(Biparietal Diameter,BPD) 受孕 受孕期 受孕期的 受孕的 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 外外二顶径 外外双顶径 外至外二顶径 外至外双顶径 妊娠 妊娠期的 妊娠的 怀卵 怀卵期 怀卵期的 怀卵的 怀孕 怀孕期 怀孕期的 怀孕的 时刻;随机;随意;瞬间 时间(如秒);时间(如秒数) 由外至外的二顶径 由外至外的双顶径(Outer to Outer Biparietal Diameter,O-O BPD) 胎;超系统 - 胎儿 胎龄;Gestational Age;GA 胎龄估计法;孕龄估计法 超声.依据由外至外的双顶径的胎龄估计法.Chitty.97;超声.依据O-O BPD的胎龄估计法.Chitty 1997;超声.依据O-O BPD的胎龄估计法.Chitty.97;超声.依据O-O BPD的胎龄估计法.Chitty97;超声.依据由外至外的双顶径的胎龄估计法.Chitty 1997;超声.依据由外至外的双顶径的胎龄估计法.Chitty97 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

Example Units

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