scholarly journals Mechanical ventilation with heated humidifiers or with heat and moisture exchangers with microbiological filters did not reduce ventilator associated pneumonia in adults

2006 ◽  
Vol 9 (3) ◽  
pp. 82-82 ◽  
Author(s):  
R. MacLeod
Keyword(s):  
Mechanical Ventilation ◽  
Ventilator Associated Pneumonia ◽  
Heat And Moisture Exchangers ◽  
Heated Humidifiers ◽  
Heat And Moisture

scholarly journals Ventilator Circuits, Humidification and Ventilator-Associated Pneumonia

1996 ◽  
Vol 3 (6) ◽  
pp. 397-402
Author(s):  
Dean Hess
Keyword(s):  
Mechanical Ventilation ◽  
Moisture Loss ◽  
Ventilator Associated Pneumonia ◽  
Ventilator Circuit ◽  
Mechanically Ventilated ◽  
Artificial Airway ◽  
Condensate Formation ◽  
Heated Humidifiers ◽  
Technical Issues ◽  
Heat And Moisture

Technical issues in the care of mechanically ventilated patients include those related to the ventilator circuit, humidification and ventilator-associated pneumonia. Principal issues related to ventilator circuits include leaks and compression volume. Circuit compression volume affects delivered tidal volume as well as measurements of auto-positive end-expiratory pressure and mixed expiredPCO2. Resistance through the ventilator circuit contributes to patient-ventilator dyssynchrony during assisted modes of mechanical ventilation. Adequate humidification of inspired gas is necessary to prevent heat and moisture loss. Common methods of humidification of inspired gas during mechanical ventilation include use of active heated humidifiers and passive artificial noses. Artificial noses are less effective than active humidifiers and are best suited to short term use. With active humidifiers, the circuit can be heated to avoid condensate formation. However, care must be exercised when heated circuits are used to avoid delivery of a low relative humidity and subsequent drying of secretions in the artificial airway. Although pneumonia is a complication of mechanical ventilation, these pneumonias are usually the result of aspiration of pharyngeal secretions and are seldom related to the ventilator circuit. Ventilator circuits do not need to be changed more frequently than weekly for infection control purposes, and the incidence of ventilator-associated pneumonia may be greater with more frequent circuit changes.

Comparison of the Effects of Heat and Moisture Exchangers and Heated Humidifiers on Ventilation and Gas Exchange During Weaning Trials From Mechanical Ventilation

CHEST Journal ◽  
1996 ◽  
Vol 110 (5) ◽  
pp. 1294-1298 ◽  
Author(s):  
Geneviève Le Bourdellès ◽  
Laurence Mier ◽  
Béatrice Fiquet ◽  
Kamel Djedaïni ◽  
Georges Saumon ◽  
...  
Keyword(s):  
Mechanical Ventilation ◽  
Gas Exchange ◽  
Heat And Moisture Exchangers ◽  
Heated Humidifiers ◽  
Heat And Moisture

Double-heater-wire circuits and heat-and-moisture exchangers and the risk of ventilator-associated pneumonia

2006 ◽  
Vol 34 (3) ◽  
pp. 687-693 ◽  
Author(s):  
Robert J. Boots ◽  
Narelle George ◽  
Joan L. Faoagali ◽  
John Druery ◽  
Kevin Dean ◽  
...  
Keyword(s):  
Ventilator Associated Pneumonia ◽  
Heat And Moisture Exchangers ◽  
Heater Wire ◽  
Heat And Moisture
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