Non-Invasive Ventilation Versus High-flow Nasal Oxygen in Intensive Care Units

In intensive care units (ICUs), around 20% of patients experience respiratory failure after planned extubation. Nearly 40-50% of them eventually require reintubation with subsequently high mortality rates reaching 30-40%. NIV used as rescue therapy to treat post-extubation respiratory failure could increase the risk of death. However, NIV may avoid reintubation in a number of cases, and recent large-scale clinical trials on extubation have shown that around 40 to 50% of patients with post-extubation respiratory failure are actually treated with NIV. Whereas high-flow nasal oxygen has never been specifically studied for management of post-extubation respiratory failure, this respiratory support could also in this setting constitute an alternative to standard oxygen or NIV. Given the best noninvasive respiratory support strategy in patients with post-extubation respiratory failure remains unknown, we have decided to assess whether NIV alternating with high-flow nasal oxygen as compared to high-flow nasal oxygen alone may decrease mortality of patients in ICUs with post-extubation respiratory failure.