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  ROX Index (Respiratory rate--oxygenation)

 
Input
 
O2Sat  
FIO2  
Respiratory Rate  

 
Result
 
 
ROX Index  
 
Decimal Precision  

 
     
 
Include literature references: Yes   No

 
  ROX Index Interpretation

 
>=4.88: Reduced risk of intubation
>=3.85 and <4.88: Indeterminant risk
<3.85: Increased risk of intubation

 
 

 
Equations used
 
ROXIndex = O2Sat / (FIO2 / 100) / RespiratoryRate

 

 
References
  1. Roca O, Messika J, Caralt B, et al. Predicting success of high-flow nasal cannula in pneumonia patients with hypoxemic respiratory failure: The utility of the ROX index. J Crit Care. 2016 Oct;35:200-5. PubMed ID: 27481760 PubMed Logo
  2. Gianstefani A, Farina G, Salvatore V, et al. Role of ROX index in the first assessment of COVID-19 patients in the emergency department. Intern Emerg Med. 2021 Mar 1:1–7. PubMed ID: 33646507 PubMed Logo
  3. Roca O, Caralt B, Messika J, Samper M, et al. An Index Combining Respiratory Rate and Oxygenation to Predict Outcome of Nasal High-Flow Therapy. Am J Respir Crit Care Med. 2019 Jun 1;199(11):1368-1376. PubMed ID: 30576221 PubMed Logo

 

 
Associated Logical Observation Identifiers Names and Codes [LOINC]
 
Parameter LOINC's and Suggested Units
O2Sat 2708-6 : %      2713-6 : %      51733-4 : %      59408-5 : %      
FIO2 3150-0 : %      19993-5 : %      19992-7 : %      19994-3 : %      19996-8 : %      19995-0 : %      
Respiratory Rate 9303-9 : breaths/min      9279-1 : breaths/min      76170-0 : breaths/min      19840-8 : breaths/min      

 
This material contains content from LOINC® (http://loinc.org). The LOINC table, LOINC codes, and LOINC panels and forms file are copyright © 1995-2014, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and available at no cost under the license at http://loinc.org/terms-of-use.

 
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