Version 2.80

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)

Fully-Specified Name

Component
Functional shunt volume^^adjusted to patient's actual temperature
Property
VFr
Time
Pt
System
BldA+BldMV
Scale
Qn
Method

Additional Names

Long Common Name
Arterial blood and Mixed venous blood Functional shunt volume adjusted to patient's actual temperature
Short Name
BldA+BldMV Fshunt vol temp adj VFr

Basic Attributes

Class
HEMODYN.MOLEC
Type
Clinical
First Released
Version 2.42
Last Updated
Version 2.54 (NAM)
Order vs. Observation
Observation

Formula (Readable)

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

Language Variants Get Info

Tag Language Translation
de-AT German (Austria) Synonyms: F-Shunt Volumen art./gev. temperaturkorrigiert
el-GR Greek (Greece) Όγκος λειτουργικής παροχέτευσης^^προσαρμοσμένο στην πραγματική θερμοκρασία του ασθενούς:VFr:Pt:Αρτηριακό αίμα+Μάζα/όγκος αίματος:Qn:
Synonyms: S VFr Θερμοκρασία Όγκος Όγκος λειτουργικής παροχέτευσης
es-MX Spanish (Mexico) Volumen de derivación funcional ^^ ajustado a la temperatura real del paciente:VFr:Punto temporal:BldA + BldMV:Cuantitativo:
fr-FR French (France) Volume dérivation fonctionnelle ajusté(e) à la température actuelle du patient:Fraction volumique:Ponctuel:Sang artériel+Sang mélé veineux:Numérique:
it-IT Italian (Italy) Shunt funzionale, volume^^regolato a temperatura effettiva pazienti:VFr:Pt:Sangue art+Sangue venoso misto:Qn:
Synonyms: Emodinamica - molecolare Frazione di Volume Punto nel tempo (episodio) Sangue arterioso Sangue arterioso e Sangue venoso misto Sangue venoso misto Volume di shunt funzionale
ru-RU Russian (Russian Federation) Функциональный шунт объём^^поправленный к актуальная температура пациента:ОбФр:ТчкВрм:КрА+КрСмВ:Колич:
Synonyms: Количественный Кровь артериальная Кровь артериальная+Кровь смешанная венозная Кровь смешанная венозная Объём функционального шунта Объемная фракция Точка во времени;Момент
zh-CN Chinese (China) 功能分流体积^^调整至病人实际体温的:体积分数:时间点:动脉全血+混合静脉全血:定量型:
Synonyms: S 型 体温 全血 - 混合静脉;全血 - 混合静脉性;混合静脉血;血液 - 混合静脉;血液 - 混合静脉性 功能性分流体积 动脉全血（动脉血）+混合静脉血;动脉血+混合静脉全血;动脉血+混合静脉血 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 经过调整至病人实际体温的;针对病人实际体温而调整的 血液动力学

Example Units

Unit Source
% 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=72324-7