77892-8
LOINC Code
| LOINC code | 77892-8 | |
|---|---|---|
| name | ||
| description | 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. | |
| status | ACTIVE | |
Fully-Specified Name | ||
| component | Ejection fraction | |
| property | VFr = Volume Fraction | |
| time | Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements. | |
| system | Heart.ventricle.left | |
| scale | Qn = Quantitative: The result of the test is a numeric value that relates to a continuous numeric scale. Reported either as an integer, a ratio, a real number, or a range. The test result value may optionally contain a relational operator from the set {<=, <, >, >=}. Valid values for a quantitative test are of the form "7", "-7", "7.4", "-7.4", "7.8912", "0.125", "<10", "<10.15", ">12000", 1-10, 1:256 | |
| method | US.2D+Calculated by modified Simpson method | |
Additional Names | ||
| short name | 2D US; Calc; Calculation; CARD.US; Cardiac; Cardio; Cardiology; Echography; EF; Frac; Fract; Fractionation; Fractions; Heart Disease; Hrt; Hrt ventr; L; LT; LV; LVEF; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Son | |
Basic Attributes | ||
| class | CARD.US | |
| type | 2 Clinical | |
| order vs. observation | LV EF US.2D+mod | |
| formula (readable) | Ejection fraction=[(LV end-diastolic volume-LV end-systolic volume)/LV end-diastolic volume]*100 | |
| example UCUM units | % The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business (www.unitsofmeasure.org) | |
History/Usage | ||
| first released | ||
| last updated | 2.52 | |
| last change type | MIN - change to field other than name | |
| change reason | % | |
Related Names | ||
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