77906-6
ClinicalLeft atrial End-systolic volume/Body surface area [Volume/Area] 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 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 chamber being imaged. [PMID: 16376782] The volume measurements can then be used in calculations of other parameters related to cardiac function.
LOINC 6-Axis Classification
Component
End-systolic volume/Body surface area
Property
ArVol
Time Aspect
Pt
System
Heart.atrium.left
Scale Type
Qn
Method Type
US.2D+Calculated by modified Simpson method
Details
Class
CARD.US
Order/Observation
Observation
Short Name
LA ES vol/BSA US.2D+mod Simpson
Related Names
Frequently Asked Questions
What is LOINC code 77906-6?
LOINC code 77906-6 identifies "Left atrial End-systolic volume/Body surface area [Volume/Area] 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 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 chamber being imaged. [PMID: 16376782] The volume measurements can then be used in calculations of other parameters related to cardiac function.
What does 77906-6 measure?
This code measures End-systolic volume/Body surface area in Heart.atrium.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.