In a data collected from nitrogen wash-out method in a patient, volume of nitrogen was found to be 800 mL in his residual volume (RV). How much is the RV in this patient?
In all the respiratory volumes, 80% fraction is of nitrogen. Thus, if total nitrogen volume in the RV is 800 mL, then RV is 1000 mL. (80% of 1000 mL is 800 mL.)
400 mL
800 mL
1000 mL
1600 mL
Respiratory System Pa 1