What is the purpose of humidification in ventilators?

Humidification in ventilators serves a crucial function in preventing the drying of the airways. When patients are on mechanical ventilation, especially for extended periods, the air they receive can be very dry, which can lead to irritation and injury of the mucous membranes in the respiratory tract. This dryness can also impede the natural mechanisms of the airway, such as mucociliary clearance, which is vital for trapping and expelling pathogens and debris.

By adding moisture to the air delivered through the ventilator, humidification helps to maintain proper humidity levels in the airways. This not only keeps the airways moist but also assists in maintaining normal body temperature and aids in gas exchange within the lungs. Adequate humidification supports overall lung function and comfort for the patient, minimizes airway complications, and helps to ensure better respiratory outcomes.