LP203313-4
Effective orifice area.diastole
Active
Description
Cardiac valve area can be measured (orifice area) or indirectly calculated (effective orifice area). Direct measurement can be done on echo, and calculations are based on other measurements such as blood flow volume and velocity. [DICOM] The effective orifice area is calculated based on the equation F=A×V, where F is flow, A is area and V is velocity. The velocity is measured directly with Doppler echo and indirectly during cardiac catheterization based on the Torricelli law from the transvalvular pressure gradient: V=√2gh, where g is the velocity of acceleration resulting from gravity and h is the pressure gradient. Therefore, for area as measured by cardiac catheterization, the formula is A=F/√2gh. PMID: 22547754 Source: Regenstrief LOINC, PMID: 22547754
Basic Part Properties
- Part Display Name
- Effective orifice area during diastole
- Part Type
- Component (Describes the core component or analyte measured)
- Created On
- 2015-11-19
- Construct for LOINC Short Name
- EOA dias
LOINC Terminology Service (API) using HL7® FHIR® Get Info
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- CodeSystem lookup
- https:
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Language Variants Get Info
| Tag | Language | Translation |
|---|---|---|
| zh-CN | Chinese (China) | 有效口面积.舒张期 Synonyms: 有效口（孔、 |
| it-IT | Italian (Italy) | Effettiva area dell'orifizio.diastole |
LOINC Copyright
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