82337-7

LOINC Code


LOINC code82337-7
name
descriptionRight atrial pressure (RAP) can be estimated based on the diameter and collapsibility of the inferior vena cava (IVC) during inspiration as measured by ultrasound. Smaller diameter with greater than 50% collapsibility generally indicates normal RAP, while larger diameter and less than 50% collapsibility may indicate elevated RAP. The estimated RAP can be combined with tricuspid regurgitant jet velocity measurement to estimate the systolic right ventricular pressure [LOINC: 82341-9]. [PMID: 20620859]
statusACTIVE

Fully-Specified Name

componentIntrachamber
propertyPres  =  Pressure
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.
systemHeart.atrium.right
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+Estimated

Additional Names

short nameAtrial; CARD.US; Cardiac; Cardio; Cardiology; Echography; Est; estimation; Heart Disease; Hrt; Intrachamber pres; Point in time; predicted; Pressure; QNT; Quan; Quant; Quantitative; R; RA; Random; RAP; RT; Sonogram; Sonograph; Sonography; ULS; Ultrasound

Basic Attributes

classCARD.US
type2  Clinical
order vs. observationRA Intrachamber
example UCUM unitsmm Hg
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 updated2.71
last change typeMIN  - change to field other than name
change reasonmm[Hg]

Related Names



Copyright © 2026 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2026, 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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