What is the fine-grained topic of the following text: Abstract:Objective To study the effects of different airway humidification fluid applied to non-invasive mechanical ventilation.Methods 121 cases of non-invasive mechanical ventilation admitted to the hospital from May 2016 to May 2017 were randomly divided into three groups.40 cases in group A received sterile water for injection as humidifying liquid.40 cases in group B received normal saline and 41 cases in group C received 1.25% sodium bicarbonate water solution.The viscosity of sputum and the comfort of humidification for the three groups were compared.Results On day 1, there was no significant difference in the sputum viscosity among the three groups. Only return the topic.
The effects of different airway humidification fluids on non-invasive mechanical ventilation.