LOINC
Version 2.68

79947-8Aortic valve Pressure half time during diastole by US.doppler continuous waveActive

Part Description

LP202951-2   Pressure half time.diastole
Pressure half-time is the time needed for the atrioventricular pressure gradient to reduce to half its initial measurement during ventricular diastole. It is primarily assessed through Doppler echocardiography though more invasive cardiac catherization and provides a means of calculating the approximate mitral valve area and evaluating mitral valve stenosis regurgitation. Caution should be used when applying pressure half-time measurements in patients with prosthetic mitral valves, mitral commissurotomy, tachycardia, arrhythmias, and aortic insufficiency. [PMID: 21044983] Source: Regenstrief LOINC

Fully-Specified Name

Component
Pressure half time.diastole
Property
Time
Time
Pt
System
Aortic valve
Scale
Qn
Method
US.doppler.CW

Additional Names

Short Name
AV PHT dias

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

zh-CNChinese (CHINA)
压力减半时间.舒张期:时间:时间点:主动脉瓣:定量型:超声.多普勒.连续波
it-ITItalian (ITALY)
Pressione metà del tempo.diastole:Tempo:Pt:Valvola aortica:Qn:Eco.doppler.CW

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=79947-8