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Term Description

A ratio with numerator = oxygen partial pressure (PaO2) in mmHg and denominator = fraction of inspired oxygen (FIO2) with no units. If the patient is breathing room air (20% O2) the fraction would be 0.20. It is reported in mmHg. It is a well established marker for lung function during mechanical ventilation and used in many acuity scores like SAPS II, SAPS III, and SOFA.

LOINC Names Get Info

Fully-Specified Name
Horowitz index:Ratio:Pt:Bld+Inhl gas:Qn:
Long Common Name
Horowitz index in Blood
Short Name
Horowitz index Bld+IhG-Rto
Display Name
Horowitz index (Bld+Inhl gas) [Ratio]
Consumer Name Alpha Get Info
Horowitz index, Bld+Inhl Gas

Part Model Get Info

  • Component
    Horowitz index
    LP65891-1
    • Analyte
      Horowitz index
      LP65891-1
      • Component Numerator
        Horowitz index
        LP65891-1
        • Component Numerator Core
          Horowitz index
          LP65891-1
        • Component Numerator Core Suffix
          NULL
           
      • Component Denominator
        NULL
         
        • Component Denominator Core
          NULL
           
        • Component Denominator Core Suffix
          NULL
           
    • Challenge
      NULL
       
    • Adjustment
      NULL
       
    • Count
      NULL
       
  • Property
    Ratio
    LP6852-0
  • Time
    Pt
    LP6960-1
  • System
    Bld+Inhl gas
    LP65892-9
    • System Core
      Bld+Inhl gas
      LP65892-9
    • Super System
      NULL
       
  • Scale
    Qn
    LP7753-9
  • Method
    NULL
     

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 2.22
Last Updated
Version 2.73 (MIN)
Order vs. Observation
Both
Common Test Rank Get Info
9532

Formula (Readable)

arterial oxygen partial pressure[ (PaO2) in mmHg]/ fraction of inspired oxygen

Language Variants Get Info

TagLanguageTranslation
cs-CZCzech (Czechia)Horowitzův index:Poměr:Časový bod:Krev a plyn vdechovaný:Kvantitativní:
el-GRGreek (Greece)Δείκτης Horowitz:Ratio:Pt:Αίμα+Εισπνεόμενο αέριο:Qn:
Synonyms: CHEM Pt Qn Ratio Αέριο Αίμα Αίμα+Εισπνεόμενο αέριο Δείκτης Horowitz Εισπνεόμενο αέριο
es-ESSpanish (Spain)Indice Horowitz:Fracción:Punto temporal:Sangre y gas inhalado:Qn:
Synonyms: Cuantitativo
es-MXSpanish (Mexico)Índice de Horowitz:Proporción:Punto temporal:Sangre y gas inhalado:Cuantitativo:
fr-CAFrench (Canada)Indices d'Horowitz:Ratios:Temps ponctuel:Sang+Gaz inhalé:Quantitatif:
fr-FRFrench (France)Index Horowitz:Ratio:Ponctuel:Sang+Gaz inhalé:Numérique:
fr-BEFrench (Belgium)Indices d'Horowitz:Ratios:Temps ponctuel:Sang+Gaz inhalé:Quantitatif:
it-ITItalian (Italy)Horowitz, indice:Rapporto:Pt:Sangue+Gas inalati:Qn:
Synonyms: Chimica Gas inalati Indice di Horowitz Punto nel tempo (episodio) Sangue Sangue & Gas inalati
nl-NLDutch (Netherlands)Horowitz-index:verhouding:moment:bloed en geïnhaleerd gas:kwantitatief:
pl-PLPolish (Poland)Wskaźnik Horowitza:współczynnik:punkt w czasie:krew i wdychany gaz:ilościowy:
Synonyms: Wskaźnik oksygenacji
pt-BRPortuguese (Brazil)Horowitz index:Ratio:Pt:Sg+Gas inalado:Qn:
Synonyms: PaO2/FiO2; Rto; Point in time; Random; Bld+IhG; IhG; Inhaled Gas; Inspired; Bld+IhG; Blood; WB; Whole blood; Quantitative; QNT; Quant; Quan; Gases; Chemistry
ru-RURussian (Russian Federation)Горовица индекс:Отношение:ТчкВрм:Кр+Ингал газ:Колич:
Synonyms: Индекс Горовица Количественный Коэффициент;Соотношение;Пропорция Кровь Кровь и Ингалированный газ Точка во времени;Момент
tr-TRTurkish (Turkey)Horowitz indeksi:Oran:Zmlı:Kan+Soln gaz:Kant:
zh-CNChinese (China)Horowitz 指数:比率:时间点:全血+吸入的气体:定量型:
Synonyms: Horowitz index;PaO2/FiO2;哈氏指数;哈洛维茨指数;哈鲁维兹指数 全血+吸入气;全血+吸入气体;全血+吸入的空气;血+吸入气;血+吸入气体;血+吸入的气体;血+吸入的空气;血液+吸入气;血液+吸入气体;血液+吸入的气体;血液+吸入的空气 化学;化学检验项目;化学检验项目类;化学类;化学试验;非刺激耐受型化学检验项目;非刺激耐受型化学检验项目类;非刺激耐受型化学试验;非刺激耐受型化学试验类 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 吸入气;吸入气体;吸入的空气 时刻;随机;随意;瞬间 来自于不同体系的两个观察指标之比;比;比值 气 气体类 空气 血;血液

Example Units

UnitSource
mm[Hg]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=50982-8