Initial Temperature of High Flow Nasal Cannula

In the literature there are no indication on which is the best setting of the humidification temperature at the start of treatment with high flow nasal cannula (HFNC) in intensive care unit (ICU). The primary objective of this study is to understand whether there is a difference between the approaches to the humidification temperature for initiating HFNC treatment based on the perceived comfort of ICU patients. We hypothesize that a gradual increase in temperature (31-34-37°C or 34-37°C) could lead to a different comfort as compared to 37°C as initial starting setting. The secondary aim is to assess the patient's dryness and humidity level of the nose.