Version 2.78

Part Description

LP203313-4   Effective orifice area.diastole
Cardiac valve area can be measured (orifice area) or indirectly calculated (effective orifice area). Direct measurement can be done on echo, and calculations are based on other measurements such as blood flow volume and velocity. [DICOM] The effective orifice area is calculated based on the equation F=A×V, where F is flow, A is area and V is velocity. The velocity is measured directly with Doppler echo and indirectly during cardiac catheterization based on the Torricelli law from the transvalvular pressure gradient: V=√2gh, where g is the velocity of acceleration resulting from gravity and h is the pressure gradient. Therefore, for area as measured by cardiac catheterization, the formula is A=F/√2gh. PMID: 22547754 Source: Regenstrief LOINC, PMID: 22547754

Fully-Specified Name

Component
Effective orifice area.diastole
Property
Area
Time
Pt
System
Mitral valve
Scale
Qn
Method
US.doppler+Calculated by PISA method

Additional Names

Short Name
MV EOA dias PISA

Basic Attributes

Class
CARD.US.DICOM
Type
Clinical
First Released
Version 2.54
Last Updated
Version 2.67
Order vs. Observation
Observation

Language Variants Get Info

Tag Language Translation
es-MX Spanish (Mexico) Área efectiva del orificio diástole:Zona:Punto temporal:La válvula mitral:Cuantitativo:US.doppler+Calculated by PISA method
it-IT Italian (Italy) Effettiva area dell'orifizio.diastole:Area:Pt:Valvola mitrale:Qn:Eco.doppler+Calcolato da metodo PISA
Synonyms: DICOM Simplified Adult Echo Report concepts Eco Ecografia cardiaca Ecografia.doppler Ecografia.doppler.calcolata Punto nel tempo (episodio)
zh-CN Chinese (China) 有效口面积.舒张期:面积:时间点:二尖瓣:定量型:超声.多普勒+近端等速表面积计算法
Synonyms: 僧帽瓣 口（孔、孔口、出口、瓣口）面积 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 孔;孔口;出口;瓣口 心脏病学 心脏病学.超声;心脏超声 心脏超声.多普勒 心脏超声.多普勒.计算法 时刻;随机;随意;瞬间 有效口（孔、孔口、出口、瓣口）面积.舒张期（心脏舒张期、心舒期） 计算;计算型方法 超声.多普勒+近端等速表面积（Proximal Isovelocity Surface Area、PISA）计算法 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 近端等速表面积 近端等速表面积（Proximal Isovelocity Surface Area，PISA）

Example Units

Unit Source
cm2 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=80067-2