During a mandatory breath the Sechrist Millennium® never reaches the pressure limit during inspiration. Under these conditions, what is the control variable?

A lost fingernail may take ________ to regrow

a. 3.5 to 5.5 months b. six to eight months c. six to eight weeks d. a year

The best way to confirm that you are providing good _______ _______ is to observe for good rise and fall of the _______ with each breath

Fill in the blank(s) with the appropriate word(s).