Inspiratory work and airway pressure with continuous positive airway pressure delivery systems.

Abstract:

:To determine work-of breathing with continuous positive airway pressure (CPAP) delivery systems, we used a lung model to simulate spontaneous breathing. "Additional work" during tidal breathing was derived by comparing change in airway pressure with change in tidal volume. Seven demand-flow CPAP delivery systems were compared with one continuous-flow, 5-L reservoir-bag system (flow of 60 L/min to maintain positive airway pressure). It was concluded that demand-flow CPAP delivery systems vary widely in the amount of additional work required of a patient. When a lung model is used, some demand-flow systems perform as well as, or better than, a continuous-flow reservoir-bag system.

journal_name

Chest

journal_title

Chest

authors

Katz JA,Kraemer RW,Gjerde GE

doi

10.1378/chest.88.4.519

subject

Has Abstract

pub_date

1985-10-01 00:00:00

pages

519-26

issue

4

eissn

0012-3692

issn

1931-3543

pii

S0012-3692(15)34233-1

journal_volume

88

pub_type

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