Format

Send to

Choose Destination
See comment in PubMed Commons below
Anaesth Intensive Care. 2005 Apr;33(2):218-22.

Comparison of oxygen cost of breathing between pressure-support ventilation and airway pressure release ventilation.

Author information

1
Ege University Hospital, Department of Anaesthesiology and Reanimation, Bornova, Izmir, Turkey.

Abstract

We compared the oxygen cost of breathing between pressure-support ventilation (PSV) and airway pressure release ventilation (APRV). This prospective, randomized, crossover study was conducted in a mixed ICU of a university hospital. Twenty clinically stable and spontaneously breathing patients after long-term mechanical ventilation were included. The patients were randomized to start on either PSV or APRV mode and measurements were obtained after an adaptation period of 30 minutes with a PaCO2 between 35-45 mmHg and PaO2 above 60 mmHg. Patients were then switched to the other mode and the same measurements were repeated. Indirect calorimetry was performed during each ventilatory mode for a period of 30 minutes. Oxygen consumption, energy expenditure, CO2 production, and respiratory quotient were measured. The parameters did not differ significantly between the two ventilatory modes, regardless of the patient's randomization. There were no statistically significant differences with regard to respiratory rate, minute volume, and blood gas analysis. All patients tolerated both ventilatory modes without signs of discomfort. PSV and APRV produced similar results in terms of oxygen cost of breathing and other metabolic variables.

Comment in

PMID:
15960404
[Indexed for MEDLINE]
Free full text
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Australian Society of Anaesthetists
    Loading ...
    Support Center