Effect of HME Positioning on Gas Humidification
Author Information
Author(s): Inui Daisuke, Oto Jun, Nishimura Masaji
Primary Institution: The University of Tokushima Graduate School
Hypothesis
How does the positioning of heat and moisture exchangers (HME) affect inspiratory gas humidification in mechanically ventilated patients?
Conclusion
The type and placement of HME significantly affect the maintenance of absolute humidity and temperature during adult ventilation.
Supporting Evidence
- Hygrobac S provided significantly higher absolute humidity and temperature than Thermovent HEPA.
- Both HMEs performed better when placed closer to the endotracheal tube.
Takeaway
Placing a heat and moisture exchanger closer to the breathing tube helps keep the air warm and humid for patients on ventilators.
Methodology
The study measured absolute humidity and temperature at the end of the endotracheal tube with two different HMEs placed at two different sites on the ventilator circuit.
Limitations
The study did not measure the temperature drop across the corrugated tube used between the HME and the Y-piece.
Participant Demographics
Ten mechanically ventilated adults, with varying underlying conditions.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website