The inspiratory time setting for an infant with RDS, airway resistance of 30 cm H2O/L/sec, and lung compliance of 0.002 L/cm H2O should be which of the following?
a. 0.25 sec
b. 0.30 sec
c. 0.45 sec
d. 0.55 sec
ANS: B
Raw ? CL = 1 time constant. This is 0.06 second in this problem. One time constant multiplied by 5, or 0.30 second, should be the inspiratory time setting for this patient.
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