Version 2.78

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

Tag Language Translation
es-MX Spanish (Mexico) Presión medio tiempo diástole:Tiempo:Punto temporal:Valvula aortica:Cuantitativo:US.doppler.CW
it-IT Italian (Italy) Pressione metà del tempo.diastole:Tempo:Pt:Valvola aortica:Qn:Eco.doppler.CW
Synonyms: DICOM Simplified Adult Echo Report concepts Eco Ecografia cardiaca Ecografia.doppler Ecografia.doppler.CW;Ecografia.doppler.Continuo Emitempo di pressione Punto nel tempo (episodio) Tempo (e.g. secondi)
zh-CN Chinese (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
Synonyms: 压力（压差、压强）减半（半减、半衰、半寿、降半、半降）时间（期）.舒张期（心脏舒张期、心舒期） 压差降半时间;压差半降时间;压力减半时间;压力半减时间;压差半减时间 压强 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 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.连续波;心脏超声.多普勒.CW;连续波多普勒心脏超声 时刻;随机;随意;瞬间 时间(如秒);时间(如秒数) 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 连续波 连续波（Continuous wave，CW）

Example Units

Unit Source
ms 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=79947-8