77892-8
ClinicalLeft ventricular Ejection fraction by US.2D+Calculated by modified Simpson method
Definition
The modified Simpson method is commonly used for volume measurements in 2D cardiac imaging. It uses the biplane method of disks to measure left ventricular volume, meaning that the total volume is calculated by adding together the two-dimensional area measurements of the series of circular or elliptical slices that, taken as a whole, represent the ventricle. [PMID: 16376782] The volume measurements can then be used in calculations of other parameters related to cardiac function, including ejection fraction, cardiac output and cardiac index.
LOINC 6-Axis Classification
Component
Ejection fraction
Property
VFr
Time Aspect
Pt
System
Heart.ventricle.left
Scale Type
Qn
Method Type
US.2D+Calculated by modified Simpson method
Details
Class
CARD.US
Order/Observation
Observation
Short Name
LV EF US.2D+mod Simpson
Related Names
Frequently Asked Questions
What is LOINC code 77892-8?
LOINC code 77892-8 identifies "Left ventricular Ejection fraction by US.2D+Calculated by modified Simpson method". The modified Simpson method is commonly used for volume measurements in 2D cardiac imaging. It uses the biplane method of disks to measure left ventricular volume, meaning that the total volume is calculated by adding together the two-dimensional area measurements of the series of circular or elliptical slices that, taken as a whole, represent the ventricle. [PMID: 16376782] The volume measurements can then be used in calculations of other parameters related to cardiac function, including ejection fraction, cardiac output and cardiac index.
What does 77892-8 measure?
This code measures Ejection fraction in Heart.ventricle.left. It belongs to the CARD.US class in the LOINC classification.
What is LOINC?
LOINC (Logical Observation Identifiers Names and Codes) is a universal standard for identifying laboratory and clinical observations. It is maintained by the Regenstrief Institute and used worldwide for health data exchange.