A 65-year-old man is being evaluated for possible right pneumonectomy for bronchogenic carcinoma. The value most suggestive of postuperative problems, is

A. Carbon monoxide diffusion capacity (DLCO) 55 percent predicted

B. Forced expiratory volume in 1 second (FEV1) 2L (83 percent of total forced vital capacity)

C. Maximal oxygen uptake (MVO2) 12 mLlkg/min

D. Pa CO2 50 torr

Correct Answer: Pa CO2 50 torr

Description: 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 mllkg/min, PaC02 > 46 torr, Pa02 < 70 torr

Category: Surgery

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