<prompt> A 65-year-old man is being evaluated for possible right pneumonectomy for bronchogenic carcinoma. The value most suggestive of postuperative problems, isCarbon monoxide diffusion capacity DLCO 55 percent predictedForced expiratory volume in 1 second FEV1 2L 83 percent of total forced vital capacityMaximal oxygen uptake MVO2 12 mLlkgminPa CO2 50 torr  <response>: All of the listed tests are used in evaluating pulmonary function. Disturbing values include DLCO less than 50 percent predicted, FEV1 0.8l 60 percent of FVC, MV02 10 mllkgmin, PaC02 46 torr, Pa02 70 torr 