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Term Description

time from peak AV gradient to 1/2 peak gradient

Part Descriptions

LP6617-7   US.doppler
Doppler ultrasound detects the shift in frequency of ultrasound signals reflected from moving objects. Conventional Doppler techniques assess the velocity of blood flow by measuring high-frequency, low-amplitude signals from small, fast-moving blood cells. PMID: 16534017 Source: Regenstrief LOINC, PMID: 16534017

LP73151-0   Pressure half time
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

LOINC Names Get Info

Fully-Specified Name
Pressure half time:Time:Pt:Aortic valve:Qn:US.doppler
Long Common Name
Aortic valve Pressure half time by US.doppler
Short Name
AV PHT DOP

Part Model Get Info

  • Component
    Pressure half time
    LP73151-0
    • Analyte
      Pressure half time
      LP73151-0
      • Component Numerator
        Pressure half time
        LP73151-0
        • Component Numerator Core
          Pressure half time
          LP73151-0
        • Component Numerator Core Suffix
          NULL
           
      • Component Denominator
        NULL
         
        • Component Denominator Core
          NULL
           
        • Component Denominator Core Suffix
          NULL
           
    • Challenge
      NULL
       
    • Adjustment
      NULL
       
    • Count
      NULL
       
  • Property
    Time
    LP6879-3
  • Time
    Pt
    LP6960-1
  • System
    Aortic valve
    LP7026-0
    • System Core
      Aortic valve
      LP7026-0
    • Super System
      NULL
       
  • Scale
    Qn
    LP7753-9
  • Method
    US.doppler
    LP6617-7

Basic Attributes

Class
CARD.US
Type
Clinical
First Released
Version 1.0l
Last Updated
Version 2.54 (MIN)
Order vs. Observation
Observation

Language Variants Get Info

TagLanguageTranslation
el-GRGreek (Greece)Χρόνος ημίσειας πίεσης:Time:Pt:Αορτική βαλβίδα:Qn:Υπερηχογράφημα.doppler
Synonyms: CARD.US Pt Qn Time Αορτική βαλβίδα ΗΠΑ Πίεση Υπερηχογράφημα.doppler Χρόνος ημίσειας πίεσης
es-ARSpanish (Argentina)tiempo medio de presión:tiempo:punto en el tiempo:válvula aórtica:cuantitativo:ecografía.doppler
es-MXSpanish (Mexico)Presión medio tiempo:Tiempo:Punto temporal:Valvula aortica:Cuantitativo:US.doppler
it-ITItalian (Italy)Pressione, emitempo:Tempo:Pt:Valvola aortica:Qn:Eco.doppler
Synonyms: Eco Ecografia cardiaca Ecografia.doppler Emitempo di pressione Punto nel tempo (episodio) Tempo (e.g. secondi)
pt-BRPortuguese (Brazil)Tempo de meia pressão:Tempo:Pt:Válvula aórtica:Qn:US.Doppler
Synonyms: ; Pres 1/2T; P1/2T; T1/2; PHT; Point in time; Random; AV; AoV; AO; Quantitative; QNT; Quant; Quan; DOP; DUPLEX; Ultrasound; ULS; Sonogram; Sonography; Sonograph; Echography; Cardiology
zh-CNChinese (China)压差减半时间:时间:时间点:主动脉瓣:定量型:超声.多普勒
Synonyms: 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 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

Example Units

UnitSource
msExample UCUM Units

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=18104-0