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Clinical Trial Summary

Investigators hypothesized that a relative low SpO2 directed oxygen therapy would reduced the mortality in patients staying longer than 72 hours in ICUs.


Clinical Trial Description

In fear of harmful effect of hypoxia, oxygen therapy is commonly used, especially in critically ill patients in intensive care units (ICUs). However, hyperoxia can be harmful too. Examples are myocardial infarction (MI) patients and patients resuscitated to return of spontaneous circulation after cardiac arrest. In Air Versus Oxygen in Myocardial Infarction (AVOID) trial, Meyhoff and colleagues proved hyperoxia caused more cardiac injury in patients with ST-elevation MI but without hypoxia. Kilgannon and colleagues found that arterial hyperoxia following resuscitation from cardiac arrest were associated with increased in-hospital mortality, and a pulse oxygen saturation (SpO2) of 94-98% was recommended.

Recently, Panwar and colleagues found that compared to liberal oxygen strategy (SpO2 ≥96%), conservative oxygen strategy (SpO2 of 88%-92%) was feasible in patients receiving invasive mechanical ventilation. Girardis and colleagues found control oxygen therapy (targeting SpO2 of 94%-98% or PaO2 of 70-100mmHg) resulted lower ICU mortality than conventional oxygen therapy (SpO2 ≥97%) in the randomized clinical trial called Oxygen-ICU. However, the Oxygen-ICU trial was single-centered, early-terminated with only 480 patients included and led to an unplanned interim analysis. In this larger multicenter trial, investigators hypothesized that a relative low SpO2 directed oxygen therapy was safe and would reduced the 28-day mortality in patients staying longer than 72 hours in ICUs. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT02999932
Study type Interventional
Source Wuhan Union Hospital, China
Contact Shiying Yuan, MD
Phone +8613607145351
Email [email protected]
Status Recruiting
Phase N/A
Start date April 19, 2019
Completion date December 31, 2021

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