Assessment of optimal positive endexpiratory pressure using capnography

The difference between PaCO2 and PetCO2 can be used to determine the appropiate level of positive end-expiratory pressure (PEEP) in acute respiratory failure. In both experimental animals and patients, the smallest PaCO2 - PetCO2 gradient coincided with the level of PEEP providing the best arterial oxygenation and the least intrapulmonary shunt. When lung overdistension was caused by higher levels of PEEP, the PaCO2 - PetCO2 gradient increased due to an increase in alveolar dead-space with no further improvement in arterial oxygenation or intrapulmonary shunt. Nevertheless, the utility of the PaCO2 - PetCO2 gradient for setting optimal PEEP levels seems to be limited to those patients who are able to recruit collapsed lung units with PEEP ( B.!a.0ch...®L§l 1987).

Was this article helpful?

0 0
Kicking Fear And Anxiety To The Curb

Kicking Fear And Anxiety To The Curb

Kicking Fear And Anxiety To The Curb Can Have Amazing Benefits For Your Life And Success. Learn About Calming Down And Gain Power By Learning Ways To Become Peaceful And Create Amazing Results.

Get My Free Ebook


Post a comment