Which level of positive end-expiratory pressure (PEEP) is necessary to prevent rebreathing of carbon dioxide?
a. 1 to 3 cm H2O
b. 3 to 5 cm H2O
c. 5 to 7 cm H2O
d. 7 to 9 cm H2O
ANS: B
These reports suggest the use of 3 to 5 cm H2O PEEP or the use of a nonrebreathing valve to prevent rebreathing of carbon dioxide.
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