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Am Rev Respir Dis. 1977 Jan;115(1):39-45.

Comparison of the effects of continuous negative external chest pressure and positive end-expiratory pressure on cardiac index in dogs.


Continuous negative external chest pressure was used to increase the functional residual capacity in 6 dogs, and the effects were compared with the effects of increasing functional residual capacity using positive end-expiratory pressure. Cardiac index and mixed venous O2 stauration each decreased from control values during positive end-expiratory pressure, but did not decrease with continuous negative external chest pressure. Continuous negative external chest pressure may provide an alternative to positive end-expiratory pressure for increasing the functional residual capacity of patients in whom the latter causes unacceptable decreases in venous return and cardiac output.

[Indexed for MEDLINE]

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