77910-8
LOINC Code
| LOINC code | 77910-8 | |
|---|---|---|
| name | ||
| description | The effective regurgitant orifice area (EROA) is the size of the defect where the valve leaflets are not aligning normally (coaptation defect). The severity of regurgitation is related to the EROA. EROA can be calculated by the Volumetric method as regurgitant volume divided by the velocity time integral of the regurgitant jet velocity (VTIRegJet), which is recorded by continuous wave Doppler. [PMID: 18276823] | |
| status | ACTIVE | |
Fully-Specified Name | ||
| component | Effective regurgitant orifice area | |
| property | Area | |
| time | Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements. | |
| system | Aortic valve | |
| scale | Qn = Quantitative: The result of the test is a numeric value that relates to a continuous numeric scale. Reported either as an integer, a ratio, a real number, or a range. The test result value may optionally contain a relational operator from the set {<=, <, >, >=}. Valid values for a quantitative test are of the form "7", "-7", "7.4", "-7.4", "7.8912", "0.125", "<10", "<10.15", ">12000", 1-10, 1:256 | |
| method | US.doppler+Calculated by volumetric method | |
Additional Names | ||
| short name | AO; AoV; AV; AVA; Calc; Calculation; CARD.US; Cardio; Cardiology; DOP; DOP+Calc by vol; DUPLEX; Echography; ERO; EROA; Heart Disease; Point in time; QNT; Quan; Quant; Quantitative; Random; ROA; Sonogram; Sonograph; Sonography; ULS; Ultrasound | |
Basic Attributes | ||
| class | CARD.US | |
| type | 2 Clinical | |
| order vs. observation | AV EROA DOP+Cal | |
| formula (readable) | Effective regurgitant orifice area (EROA) = Regurgitant volume/Velocity time integral of the regurgitant jet velocity | |
| example UCUM units | cm2 The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business (www.unitsofmeasure.org) | |
History/Usage | ||
| first released | ||
| last updated | 2.56 | |
| last change type | NAM - change to Analyte/Component | |
| change reason | cm2 | |
Related Names | ||
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