33174-4Fetal Head Circumference estimated from gestational age by method of Chitty 1994 (US)Active
Part Description
LP70910-2 Perimeter
Perimeter is the measurement of any boundary. Measurements of the area and perimeter of fetal cross-sections have been found to establish both an accurate estimation of birthweight and an early diagnosis and differentiation of the various types of abnormal fetal growth patterns. For example, abdominal perimeter measurements are an effective predictor of discordant twins where the weight difference between the two exceeds 15%.
[PMID:103914] [PMID:3309749]
Source: Regenstrief LOINC
Fully-Specified Name
- Component
- Perimeter
- Property
- Len
- Time
- Pt
- System
- Head^Fetus
- Scale
- Qn
- Method
- US.estimated from Chitty 1994
Additional Names
- Short Name
- Fet Head Circum from GA.Chitty94
Basic Attributes
- Class
- OB.US
- Type
- Clinical
- First Released
- Version 2.09
- Last Updated
- Version 2.70
- Order vs. Observation
- Observation
Formula (Readable)
Head Circumference from gestational age: HC = -109.9 +15.16* MA- 0.002388*MA3; SD = 3.644+0.2311*MA; Limits: 12-42 weeks; HC (mm) from 59-368
Reference Information
| Type | Source | Reference |
|---|---|---|
| Article | NCBI PubMed | Chitty LS, Altman DG, Henderson A, Campbell S. Charts of fetal size: 2. Head measurements. Br J Obstet Gynaecol. 1994 Jan;101(1):35-43. Link to PubMed |
Language Variants Get Info
- zh-CNChinese (China)
- 周长:
长度: 时间点: 头部^胎儿: 定量型: 超声.依据Chitty的胎龄估计法.94 - it-ITItalian (Italy)
- Perimetro:
Len: Pt: Testa^feto: Qn: Ecografia.stimata da Chitty 1994 - pt-BRPortuguese (Brazil)
- Perímetro:
Comprimento: Pt: Crânio^feto: Qn: US.estimado pela tAcela de Chitty.94 - es-ARSpanish (Argentina)
- US.ESTIMATED FROM CHITTY.94:
longitud: punto en el tiempo: cabeza^feto: cuantitativo: US.ESTIMATED FROM CHITTY.94 - es-MXSpanish (Mexico)
- Perímetro:
Len: Punto temporal: Cabeza ^ feto: Cuantitativo: US.estimated from Chitty 1994
Example Units
| Unit | Source |
|---|---|
| mm | Example UCUM Units |
LOINC FHIR® API Example - CodeSystem Request Get Info
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=33174-4
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