What conclusions can you draw from the following data, obtai…
What conclusions can you draw from the following data, obtained from a 45-year-old man who admits to “occasional smoking” but otherwise reveals no past history of pulmonary problems? TESTS ACTUAL PREDICTED %PREDICTED FVC 3.35 3.83 87% FEV1 2.62 3.05 86% FEV1/FVC% 78% 80% —— FEF200-1200 4.43 5.45 81% FEF25-75% 1.95 3.37 58% TLC 4.75 4.90 97% FRC 2.31 2.21 105% RV 3.48 3.63 96%