06-15-2010, 12:21 PM
A 59-yo man with a long-standing smoking history presents with persitent
Dyspnea. His FEV1 is 1.0 L/min, arterial blood gas reveals PO2 of 60 mm Hg, PCO2 of
40 mm Hg, pH 7.45 and O2 saturation of 90%. He has hyperlucent lungs on chest
X-ray and decreased breath sounds on physical examination. The patientâ„¢s current
Medical regimen consists of theophylline (300 mg twice daily) and inhaled isoproterenol.
The most important addition to the patientâ„¢s therapy would be :
A. Trimethoprim-sulfamethoxazole
B. Substitution of albuterol for isoproterenol
C. Oxygen therapy
D. Prednisone
E. Addition of inhaled beclomethasone
Dyspnea. His FEV1 is 1.0 L/min, arterial blood gas reveals PO2 of 60 mm Hg, PCO2 of
40 mm Hg, pH 7.45 and O2 saturation of 90%. He has hyperlucent lungs on chest
X-ray and decreased breath sounds on physical examination. The patientâ„¢s current
Medical regimen consists of theophylline (300 mg twice daily) and inhaled isoproterenol.
The most important addition to the patientâ„¢s therapy would be :
A. Trimethoprim-sulfamethoxazole
B. Substitution of albuterol for isoproterenol
C. Oxygen therapy
D. Prednisone
E. Addition of inhaled beclomethasone