LOINC
Version 2.66

80048-2Left ventricular Dyssynchrony index during systole by US.tissue dopplerActive

Component
Dyssynchrony index.systole
Property
Time
Time
Pt
System
Heart.ventricle.left
Scale
Qn
Method
US.tissue doppler

Additional Names

Short Name
LV Dyssynchrony index TDI

Part Descriptions

LP203319-1   Dyssynchrony index.systole
Left ventricular (LV) systolic dyssynchrony represents variability in the timing of contraction in different LV myocardial segments. The mechanical dyssynchrony index, also
known as the Yu index, is one measure of systolic dyssynchrony and is calculated based on the standard deviation of the time to peak systolic velocity for each segment as measured by echo. LV dyssynchrony leads to decreased pumping efficiency and therefore a decrease in the LV ejection fraction, and is significantly correlated with LV systolic dysfunction in patients with heart failure independent of myocardial perfusion. [PMID: 18314047] Source: Regenstrief LOINC, PMID: 18314047

LP189366-0   US.tissue doppler
Doppler ultrasound detects the shift in frequency of ultrasound signals reflected from moving objects. Conventional Doppler techniques assess the velocity of blood flow by measuring high-frequency, low-amplitude signals from small, fast-moving blood cells. In tissue doppler ultrasound, the same Doppler principles are used to quantify the higher-amplitude, lower-velocity signals of myocardial tissue motion. [PMID: 16534017] Source: Regenstrief LOINC, PMID: 16534017

Basic Attributes

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

Language Variants Get Info

zh-CNChinese (China)
不同步指数.收缩期:时间:时间点:心脏.心室.左侧:定量型:超声.组织多普勒

Example Units

Unit Source
ms Example UCUM Units

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=80048-2