Adequate humidification is essential for intubated patients because dry medical gases can cause thick secretions and dangerous endotracheal tube blockages. A clear correlation exists between exhaled and inhaled humidity delivered by heat and moisture exchanger. The objective of this study is to measure the temperature of exhaled gases in intubated patients in order to accurately calculate the absolute humidity during the expiratory phase. These data will allow for a more accurate reproduction of real clinical conditions during bench testing and will improve the assessment of heat and moisture exchanger performance device evaluation.
Adults (≥18 years)
Intubated and mechanically ventilated in the intensive care unite
Using passive humidification (Heat and Moisture exchanger)
PEEP set < 12 cmH₂O
Inhaled nitric oxide therapy
Tracheostomy
Intubated patient using a heater and moist exchanger
Cohort
Prospective
Expiratory gases temperature
Other interventionMeasure expiratory gas temperature immediately before the passive humidifier in intubated ICU patients and evaluate the relationship between body temperature and expiratory temperature.
Expiratory gas temperature
Measure expiratory gas temperature immediately before the passive humidifier
Relationship between body temperature and expiratory temperature.
Evaluate the relationship between body temperature and expiratory temperature
Estimate expiratory absolute humidity based on measured temperature
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