What is the recommended inspiratory time percent setting for HFOV?

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The recommendation is a 33% inspiratory time for the HFOV devices approved in the United States. The result is that, for each completed respiratory cycle, one-third is inspiratory and two-thirds is expiratory. This relationship between the inspiratory and expiratory times enhances the egress of gas during exhalation because the 1:2 I/E ratio favors the expiratory phase, thereby reducing inadvertent air trapping or breath stacking.

What Is the Recommended Inspiratory Time Percent Setting for HFOV