77891-0
LOINC Code
| LOINC code | 77891-0 | |
|---|---|---|
| name | ||
| description | This term represents the left ventricular ejection fraction (LVEF) based on left ventricular (LV) end-diastolic and end-systolic volumes as calculated by the Teichholz method from measurements taken during 2D cardiac echo. The Teichholz formula is used to calculate left ventricular volume as follows: LV end-diastolic volume = [7/2.4 + Dd]x[Dd]^3, where Dd = the left ventricular internal dimension (short axis) as measured at end-diastole, and LV end-systolic volume = [7/2.4 + Ds]x[Ds]^3, where Ds = the left ventricular internal dimension (short axis) as measured at end-systole. [PMID: 1244736] | |
| status | ACTIVE | |
Fully-Specified Name | ||
| component | Ejection fraction | |
| property | VFr = Volume Fraction | |
| 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 | Heart.ventricle.left | |
| 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.2D+Calculated by Teichholz method | |
Additional Names | ||
| short name | 2D Teichholz; 2D US; Calc; Calculation; CARD.US; Cardiac; Cardio; Cardiology; Echography; EF; Frac; Fract; Fractionation; Fractions; Heart Disease; Hrt; Hrt ventr; L; LT; LV; LVEF; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; | |
Basic Attributes | ||
| class | CARD.US | |
| type | 2 Clinical | |
| order vs. observation | LV EF 2D Teichh | |
| formula (readable) | Ejection fraction=[(LV end-diastolic volume-LV end-systolic volume)/LV end-diastolic volume]*100 | |
| example UCUM units | % 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 | 2.54 | |
| last change type | MIN - change to field other than name | |
| change reason | % | |
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.
Thank you for choosing Find-A-Code, please Sign In to remove ads.
Quick, Current, Complete - www.findacode.com