The humidification temperature and relative humidity of the airway are lower than the temperature considered as insufficient humidification.

It is recommended to use electric heating and constant temperature humidifying tank for heating. The temperature of the gas inhaled by the patient should be kept at 32 ~ 37℃, the water temperature of the heater should be 50 ~ 70℃, and the relative humidity of the gas should be controlled at 95% ~ 100%.

The minimum temperature of inhaled gas should not be lower than 20℃, and the maximum temperature should not be higher than 40℃

In order to ensure the temperature and humidity of inhaled gas, the room temperature should be kept at 20 ~ 24℃ and the relative humidity should be 60% ~ 70%.