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Part Description

LP65279-9   Functional shunt volume
FShunt is an estimate of the fraction of the venous return that bypasses the pulmonary circulation and/or is not oxygenated during passage through the pulmonary capillaries (pc), that is, the ratio between the shunted cardiac output and the total cardiac output:

FShunt = (ctO2[pc] - ctO2[a])/(ctO2[pc] - ctO2[v]) where [pc]= pulmonary capillaries, [a] = arterial blood, [v] = mixed venous blood

If no mixed venous sample is measured, FShunt is estimated by assuming the arteriovenous difference to be 2.3 mmol/L.

In the absence of extrapulmonal shunting, FShunt provides information about the intrapulmonary component of hypoxemia. A high FShunt indicates pathological pulmonary mismatch between ventilation and perfusion, e.g., perfusion of non-ventilated areas (atelectases) and/or increased ventilation-perfusion scatter. Source: Regenstrief LOINC, FShunt (The Deep Picture)

LOINC Names Get Info

Fully-Specified Name
Functional shunt volume:VFr:Pt:BldA:Qn:
Long Common Name
Arterial blood Functional shunt volume
Short Name
BldA Fshunt vol VFr

Part Model Get Info

  • Component
    Functional shunt volume
    LP65279-9
    • Analyte
      Functional shunt volume
      LP65279-9
      • Component Numerator
        Functional shunt volume
        LP65279-9
        • Component Numerator Core
          Functional shunt volume
          LP65279-9
        • Component Numerator Core Suffix
          NULL
           
      • Component Denominator
        NULL
         
        • Component Denominator Core
          NULL
           
        • Component Denominator Core Suffix
          NULL
           
    • Challenge
      NULL
       
    • Adjustment
      NULL
       
    • Count
      NULL
       
  • Property
    VFr
    LP6891-8
  • Time
    Pt
    LP6960-1
  • System
    BldA
    LP7067-4
    • System Core
      BldA
      LP7067-4
    • Super System
      NULL
       
  • Scale
    Qn
    LP7753-9
  • Method
    NULL
     

Basic Attributes

Class
HEMODYN.MOLEC
Type
Clinical
First Released
Version 2.42
Last Updated
Version 2.73 (MIN)
Order vs. Observation
Observation
Common Test Rank Get Info
17348

Formula (Readable)

FShunt = [1+([ctO2(a) - ctO2(mv)]/[ctO2(A) - ctO2(a)])]^-1 where ctO2(a) = total oxygen in arterial bld; ctO2(A) = total oxygen in alveolar bld; and ctO2(mv) = total oxygen in mixed venous bld

Language Variants Get Info

TagLanguageTranslation
de-ATGerman (Austria)Synonyms: Shunt-Vol. fkt. art.
el-GRGreek (Greece)Όγκος λειτουργικής παροχέτευσης:VFr:Pt:Αρτηριακό αίμα:Qn:
Synonyms: HEMODYN.MOLEC Pt Qn VFr Αρτηριακό αίμα Όγκος Όγκος λειτουργικής παροχέτευσης
es-MXSpanish (Mexico)Volumen de derivación funcional:VFr:Punto temporal:BldA:Cuantitativo:
fr-FRFrench (France)Volume dérivation fonctionnelle:Fraction volumique:Ponctuel:Sang artériel:Numérique:
it-ITItalian (Italy)Shunt funzionale, volume:VFr:Pt:Sangue art:Qn:
Synonyms: Emodinamica - molecolare Frazione di Volume Punto nel tempo (episodio) Sangue arterioso Volume di shunt funzionale
ru-RURussian (Russian Federation)Функциональный шунт объём:ОбФр:ТчкВрм:КрА:Колич:
Synonyms: Количественный Кровь артериальная Объём функционального шунта Объемная фракция Точка во времени;Момент
zh-CNChinese (China)功能分流体积:体积分数:时间点:动脉全血:定量型:
Synonyms: 功能性分流体积 动脉血 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 容积 容积分数 时刻;随机;随意;瞬间 特殊血流动力学;特殊血液动力学;血液动力学.分子型 血液动力学

Example Units

UnitSource
%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=72326-2