Aortic valve Effective regurgitant orifice area by US.doppler+Calculated by volumetric method   77910-8

LOINC Code


LOINC code77910-8
nameAortic valve Effective regurgitant orifice area by US.doppler+Calculated by volumetric method
descriptionThe 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]
statusACTIVE

Fully-Specified Name

componentEffective regurgitant orifice area
propertyArea
timePt  =  Point in time:  To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
systemAortic valve
scaleQn  =  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
methodUS.doppler+Calculated by volumetric method

Additional Names

short nameAV EROA DOP+Calc by vol

Basic Attributes

classCARD.US
type2  Clinical
order vs. observationObservation
formula (readable)Effective regurgitant orifice area (EROA) = Regurgitant volume/Velocity time integral of the regurgitant jet velocity
example UCUM unitscm2
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)
example unitcm2

Associated Observations

LOINC codes that represent optional associated observation(s) for a clinical observation or laboratory test. A LOINC term may represent a single associated observation or panel containing several associated observations.

History/Usage

first released
last updated2.56
last change typeNAM  - change to Analyte/Component
change reasonAdded "area" to the Component to align with the other effective orifice terms

Related Names

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

Copyright © 2024 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2024, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.

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