Evaluate the combinations of compliance and resistance and select the combination that will cause the lungs to empty slowest. A) CS = 0.05 L/cm H₂O $\quad$R_aw= 2 cm H₂O/(L/sec) B) CS = 0.05 L/cm H₂O $\quad$R_aw= 6 cm H₂O/(L/sec) C) CS = 0.03 L/cm H₂O $\quad$R_aw= 5 cm H₂O/(L/sec) D) CS = 0.03 L/cm H₂O $\quad$R_aw= 8 cm H₂O/(L/sec)

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Use the time constant formula,TC = C × R,to determine the time constant for each choice.The combination with the longest time constant will empty the slowest.The time constant for A is 0.1 second,B is 0.3 second,C is 0.15 second,and D is 0.24 second.To find out how many seconds for emptying,multiply the time constant by 5.

Evaluate the Combinations of Compliance and Resistance and Select the Combination