heated humidifier
Medical device that warms and moistens gas delivered to patients through artificial airways or oxygen therapy systems.
Full Definition
A heated humidifier is an essential respiratory care device that adds both heat and moisture to dry medical gases before they reach the patient's respiratory system. The device consists of a heated water chamber that creates water vapor, which is then mixed with the gas flow to achieve optimal temperature and humidity levels. Proper humidification is crucial for patients with artificial airways because it prevents drying of respiratory secretions, maintains mucociliary clearance, and reduces the risk of airway inflammation. The system typically maintains gas temperature at 37°C and 100% relative humidity at the airway opening. Different types include pass-over, cascade, and wick humidifiers, each with specific applications and performance characteristics.
Usage
Usage note: Contrast with heat and moisture exchangers (HMEs) which are passive devices.
In Context
- "The heated humidifier maintained optimal airway humidity for the mechanically ventilated patient throughout the night shift." — Respiratory therapy documentation
- "Condensation in the ventilator circuit indicated proper function of the heated humidifier system." — Equipment check report