|
1
|
Duprez F, Mol B, Lesire B, Cotils M, Michotte JB, Mashayekhi S, de Terwangne C. FiO 2 prediction formula during low flow oxygen therapy in an adult model: a bench study. J Clin Monit Comput 2024; 38:455-461. [PMID: 38155340 DOI: 10.1007/s10877-023-01109-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 11/17/2023] [Indexed: 12/30/2023]
Abstract
During low-flow oxygen therapy, the true value of inspired oxygen fraction (FiO2) is generally unknown. Knowledge of delivered FiO2 values may be useful as well as to adjust oxygen therapy, as well as to predict patient deterioration. This study proposes a New FiO2 Prediction Formula (NFiO2) for low-flow oxygenation and compares its predictive value to precedent formulas. In a bench study, the O2 Flow rate was delivered through a T-piece connected to a dual-compartment artificial lung controlled by a mechanical ventilator. To test the NFiO2 formula, a set of ventilatory parameters were tested: Tidal Volume was set from 400 to 600 ml, Respiratory Rate (RR) was set from 18 to 30 CPM, Ti/Ttot was set at 0.33 and 0.25, and O2 flow rates from 3 to 10 L/min. A data acquisition system measured all parameters. To quantify the accuracy of the NFiO2 compared to other FiO2 prediction formulas, Bland and Altman agreement analyses were performed. To make use of the Duprez Formula 2018 in clinical practice, we simplified the formula to estimate the FiO2 during oxygenation at low flow. This NFiO2 formula makes use of only O2 Flow Rate and RR. Bias and limits of agreement between predicted FiO2 and benchtop FiO2 highlighted consistent differences between different FiO2 prediction formulas. The NFiO2 and the Duprez Formula 2018 seemed to be the most accurate formulas, followed by the Vincent Formula, and lastly the Shapiro Formula. A New FiO2 Prediction Formula was developed using clinical readily available variables (RR and O2 Flow rate) which showed good accuracy in predicting FiO2 during oxygenation at low flow.
Collapse
Affiliation(s)
- F Duprez
- Research Unit and Innovation Condorcet Epicura, Epicura Hospital, 63 rue de Mons, 7301, Hornu, Belgium.
- Laboratory of Motion and Respiratory Physiology, Condorcet School, 75 rue Paul Pastur, 7500, Tournai, Belgium.
| | - B Mol
- Research Unit and Innovation Condorcet Epicura, Epicura Hospital, 63 rue de Mons, 7301, Hornu, Belgium
| | - B Lesire
- Pulmonary department, Epicura Hospital, Hornu, Belgium
| | - M Cotils
- Pulmonary department, Epicura Hospital, Hornu, Belgium
| | - J B Michotte
- School of Health Sciences, University of Applied Sciences and Arts Western Switzerland, Lausanne, Switzerland
| | - S Mashayekhi
- Research Unit and Innovation Condorcet Epicura, Epicura Hospital, 63 rue de Mons, 7301, Hornu, Belgium
| | - C de Terwangne
- Department of Internal Medicine, Cliniques Universitaires Saint Luc, Avenue Hippocrate 10, 1200, Woluwe, Brussels, Belgium.
| |
Collapse
|
|
2
|
Wemple ML, Swenson KE, Swenson ER. Oxygen Therapy Part 2 - Indications and Toxicity. NEJM EVIDENCE 2023; 2:EVIDra2300111. [PMID: 38320167 DOI: 10.1056/evidra2300111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Oxygen Therapy Part 2: Indications and ToxicityWemple et al. continue their review of oxygen therapy, discussing the acute and chronic indications for oxygen and the delivery of supplemental oxygen (and its potential adverse effects and toxicity).
Collapse
Affiliation(s)
- Matthew L Wemple
- Division of Pulmonary, Critical Care and Sleep Medicine, VA Puget Sound Health Care System, University of Washington, Seattle
| | - Kai E Swenson
- Division of Pulmonary and Critical Care Medicine, Massachusetts General Hospital, Harvard Medical School, Boston
| | - Erik R Swenson
- Division of Pulmonary, Critical Care and Sleep Medicine, VA Puget Sound Health Care System, University of Washington, Seattle
| |
Collapse
|
|
3
|
Duprez F, Bruyneel A, Vanhelleputte K, Meurant V, Raquet B, Dupriez F, de Terwangne C, Tortora R, Jacques JM, Greef JD, Poncin W. Comparison of the Arterial Oxygenation Between Two Oxygen Masks. Respir Care 2022; 67:respcare.09898. [PMID: 35853709 PMCID: PMC9994031 DOI: 10.4187/respcare.09898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Frédéric Duprez
- Department of Intensive Care, Epicura Hospital, Hornu, Belgium; and Laboratory of Motion and Pulmonary Physiology, Provincial School of Hainaut HEPH-Condorcet, Tournai, Belgium.
| | - Arnaud Bruyneel
- Health Economics, Hospital Management and Nursing Research Department, School of Public Health, Université Libre de Bruxelles, Campus Erasme, Brussels, Belgium
| | | | | | | | - Florence Dupriez
- Service des urgences, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | | | - Redente Tortora
- Department of Emergency Care, Epicura Hospital, Hornu, Belgium
| | | | - Julien De Greef
- Service de médecine interne et maladies infectieuses, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - William Poncin
- Institut de recherche expérimentale et clinique, pôle de Pneumologie, ORL et Dermatologie, Université Catholique de Louvain, Brussels, Belgium; Service de Pneumologie, Cliniques universitaires Saint-Luc, Brussels, Belgium; and Secteur de Kinésithérapie et Ergothérapie, Cliniques universitaires Saint-Luc, Brussels, Belgium
| |
Collapse
|