81399-8

Left ventricular Maximum longitudinal strain by US 2D

Active

Part Descriptions

LP208531-6 Longitudinal strain.max
Strain is defined as the deformation of a solid object in response to an applied force. Cardiac strain has multiple components, such as circumferential, longitudinal, and radial, and strain can be either perpendicular or parallel (shear) to the force that is applied. Principal strain is the direction of greatest deformation. Strain is calculated as the change in length over a particular time period relative to the original length and is expressed as a percent. Circumferential and longitudinal strain are typically negative, meaning shortening, while radial strain is normally a positive value, indicating lengthening. The strain rate is the change in strain over time and has the unit of measure s^-1. PMID: 21406664 Source: Regenstrief LOINC, PMID: 21406664

LP208531-6 Longitudinal strain.max
During myocardial contraction, as the wall shortens, it also thickens and warrants assessment of all parameters as useful for evaluation of contractile function: positive strain (radial thickening), negative strain (circumferential shortening and longitudinal shortening). Longitudinal strains are reduced in patients with myocardial infarctions, correlate with infarct size and ejection fraction, and predict left ventricular remodeling and clinical events. Longitudinal imaging planes may include four chamber, two chamber, and long axis, which correspond to the standard apical four-chamber, apical two-chamber, and apical long-axis views used for echocardiography. Global longitudinal strain (GLS) may be generated from both speckle-tracking echocardiography and the newer semi-automated feature-tracking cardiac magnetic resonance (FT CMR) software applied to routine clinical steady-state free precession imaging. These rapid and reproducible measures of GLS may detect serial changes in myocardial function using CMR or echocardiography, which are important for following progression of disease or response to medical interventions. GLS is a sensitive predictor of prognosis for patients with cardiac amyloidosis, and impaired GLS is related to unfavorable cardiovascular events in heart failure patients. Values for normal longitudinal strain are negative. PMID: 20436854 PMID: 25577185 PMID: 21406664 Source: Regenstrief LOINC

LP6574-0 US.2D
Two-dimensional (2D) imaging is one of three ultrasound modes (2D, M-mode, and Doppler) used for cardiac imaging. 2D imaging is the primary method of cardiac imaging and allows structures to be viewed moving in real time in a cross-section of the heart (two dimensions). It is used to detect abnormal anatomy or motion. The most common cross-sectional views are the parasternal long axis, the parasternal short axis, and the apical view. The gastric or subcostal and suprasternal views are also commonly used. [NCBI Books: NBK2215] Source: Regenstrief LOINC, NCBI Books: NBK2215

LOINC Names Get Info

Fully-Specified Name: Longitudinal strain.max:LenRto:Pt:Heart.ventricle.left:Qn:US.2D
Long Common Name: Left ventricular Maximum longitudinal strain by US 2D
Short Name: LV Max long strain 2D US

Part Model Get Info

Component
Longitudinal strain.max
LP208531-6
- Analyte
  Longitudinal strain.max
  LP208531-6
  - Component Numerator
    Longitudinal strain.max
    LP208531-6
    - Component Numerator Core
      Longitudinal strain.max
      LP208531-6
    - Component Numerator Core Suffix
      NULL
  - Component Denominator
    NULL
    - Component Denominator Core
      NULL
    - Component Denominator Core Suffix
      NULL
- Challenge
  NULL
- Adjustment
  NULL
- Count
  NULL
Property
LenRto
LP6824-9
Time
Pt
LP6960-1
- Time Core
  Pt
  LP6960-1
- Time Modifier
  NULL
System
Heart.ventricle.left
LP7310-8
- System Core
  Heart.ventricle.left
  LP7310-8
- Super System
  NULL
Scale
Qn
LP7753-9
Method
US.2D
LP6574-0

Basic Attributes

Class: CARD.US
Type: Clinical
First Released: Version 2.56
Last Updated: Version 2.71 (MIN)
Order vs. Observation: Observation

Language Variants Get Info

Tag	Language	Translation
el-GR	Greek (Greece)	Επιμήκης παραμόρφωση.μεγ:LenRto:Pt:Καρδιά.κοιλία.αριστερή:Qn:US.2D Synonyms: CARD.US LenRto Pt Qn US.2D Επιμήκης παραμόρφωση.μεγ ΗΠΑ Καρδιά Καρδιά.κοιλία Καρδιά.κοιλία.αριστερή Μέγ Παραμόρφωση.μεγ
es-MX	Spanish (Mexico)	Deformación longitudinal máx.:LenRto:Punto temporal:Corazón.ventrículo.izquierdo:Cuantitativo:US.2D
it-IT	Italian (Italy)	Forza longitudinale.massima:LenRto:Pt:Cuore.ventricolo.sinistro:Qn:Ecografia.2D Synonyms: Eco Ecografia 2D Ecografia cardiaca Massimo Punto nel tempo (episodio) Rapporto lunghezze Ventricolo cardiaco Ventricolo cardiaco Sinistro
zh-CN	Chinese (China)	纵向应变.最大值:长度比率:时间点:心脏.心室.左侧:定量型:超声.2D Synonyms: L LT 二维超声;二维超声检查;超声.二维;超声检查.2D;超声检查.二维可用数量表示的;定量性;数值型;数量型;连续数值型标尺向左向左侧左左侧（Left，LT，L）左向左心室;心.室.左侧;心.心室.左侧;心脏.室.左侧左边应变（形变、变形、扭曲）.最大值（极大值、极大、最大、最高值、最高、峰值、高峰）;应变最大值;最大应变心心.室;心.心室;心室;心脏.室心脏病学心脏病学.超声;心脏超声时刻;随机;随意;瞬间最大;极大值纵向（纵轴、长轴）应变（形变、变形、扭曲）.最大值（极大值、极大、最大、最高值、最高、峰值、高峰）超声检查方法;超声检查法;超声波;超声波检查方法;超声波检查法长度比

Example Units

Unit	Source
%	Example UCUM Units

LOINC Terminology Service (API) using HL7^® FHIR^® Get Info

CodeSystem lookup: https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=81399-8

LOINC Copyright

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