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NCT03156218

The Effect of FiO2 on PaO2/FiO2 Ratio

Status unknown NA Last updated 26 April 2019
What this trial tests

NA trial testing Modulation of FiO2 in PaO2/FiO2 Ratio in 20 participants. Status unknown.

Timeline
1 September 2017
Primary endpoint
1 January 2020
1 August 2020

Quick facts

Lead sponsorAmsterdam UMC, location VUmc
PhaseNA
StatusStatus unknown
Study typeINTERVENTIONAL
Allocationnon randomized
Designparallel
Maskingnone
Primary purposediagnostic
Enrollment20
Start date1 September 2017
Primary completion1 January 2020
Estimated completion1 August 2020
Sites1 location across Netherlands

Drugs / interventions tested

Conditions studied

Sponsor

Amsterdam UMC, location VUmc — full company profile →

Who can join

18 and older, any sex, with PaO2/FiO2 Ratio. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

The PaO2/FiO2 ratio is frequently used to determine the severity of lung injury in mechanically ventilated patients. However, several mathematical models have shown that PaO2/FiO2 ratio depends on FiO2. The relationship is complex and depends on numerous physiological variables, including shunt fraction, and arterio-venous oxygen difference. The nonlinear relation between PaO2/FiO2 and FiO2 underlines the limitations describing the intensity of hypoxemia using PaO2/FiO2 and is thus of major importance for the clinician. Surprisingly, this relationship has only been assessed mathematically. Obviously, the accuracy of the mathematical relationship depends on the input variables used. The current study is designed to assess the PaO2/FiO2 vs FiO2 relation in mechanically ventilated patients without ARDS (n =10) and with mild or moderate ARDS (n =10). In order to explain the dependency of the PaO2/FiO2 on FiO2, shunt fraction and alveolar - arterial oxygen difference ((A-a)DO2) will be determined in these patients.

Publications & conference data

No peer-reviewed publications indexed yet for this trial.

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Data sources for this page

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