LOINC
Version 2.68

77891-0Left ventricular Ejection fraction by US.2D+Calculated by Teichholz methodActive

Term 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]
Source: Regenstrief LOINC

Part Description

LP35012-1   Ejection fraction
In cardiovascular physiology, ejection fraction (Ef) is the fraction of blood pumped out of a ventricle with each heart beat. The term ejection fraction applies to both the right and left ventricles; one can speak equally of the left ventricular ejection fraction (LVEF) and the right ventricular ejection fraction (RVEF). Without a qualifier, the term ejection fraction refers specifically to that of the left ventricle. Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See http://creativecommons.org/licenses/by-sa/3.0/ for details. Source: Wikipedia, Ejection fraction (Wikipedia)

Fully-Specified Name

Component
Ejection fraction
Property
VFr
Time
Pt
System
Heart.ventricle.left
Scale
Qn
Method
US.2D+Calculated by Teichholz method

Additional Names

Short Name
LV EF 2D Teichholz

Basic Attributes

Class
CARD.US
Type
Clinical
First Released
Version 2.52
Last Updated
Version 2.54
Order vs. Observation
Observation

Formula (Readable)

Ejection fraction=[(LV end-diastolic volume-LV end-systolic volume)/LV end-diastolic volume]*100

Language Variants Get Info

zh-CNChinese (CHINA)
射血分数:体积分数:时间点:心脏.心室.左侧:定量型:超声.2D+Teichholz 计算法
it-ITItalian (ITALY)
Frazione di eiezione:VFr:Pt:Cuore.ventricolo.sinistro:Qn:Ecografia.2D+Cacolata da metodo Teichholz

Example Units

Unit Source
% Example UCUM Units

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=77891-0