Evaluate the combinations of compliance and resistance and select the combination that will cause the lungs to fill fastest.
A) Cs = 0.1 L/cm H₂O $\quad$ Rₐᴡ= 1 cm H₂O/(L/sec)
B) Cs = 0.1 L/cm H₂O $\quad$ Rₐᴡ= 10 cm H₂O/(L/sec)
C) Cs = 0.03 L/cm H₂O $\quad$Rₐᴡ= 1 cm H₂O/(L/sec)
D) Cs = 0.03 L/cm H₂O $\quad$Rₐᴡ= 10 cm H₂O/(L/sec)

Question

Quizplus · Accepted Answer

Use the time constant formula,TC = C × R,to determine the time constant for each choice.The time constant for answer A is 0.1 sec.The time constant for answer B is 1 sec.The time constant for answer C is 0.03 sec,and the time constant for answer D is 0.3 sec.The product of multiplying the time constant by 5 is the inspiratory time needed to deliver 100% of the volume.

Evaluate the Combinations of Compliance and Resistance and Select the Combination