Review Question - QID 108823

A 30-year-old construction worker comes to your office complaining of lower back pain. The patient reports that the pain first started 6 months ago and that he thought it was from lifting heavy objects at work. Initially, his symptoms occurred only when he woke up and then slowly improved throughout the workday, but now his symptoms last almost his entire shift. A review of systems is notable for fatigue, palpitations, and dyspnea. He notes that the fatigue has also been getting progressively worse. The patient’s past medical history is significant for eczema and inflammatory bowel disease. His only medications are NSAIDs to help with his lower back pain. He smokes cigars and drinks alcohol socially. His temperature is 99°F (37.2°C), blood pressure is 121/82 mmHg, pulse is 94/min, respirations are 15/min, and oxygen saturation is 97% on room air. On physical exam, he has mild bilateral lower extremity edema and restricted anterior flexion of the lower spine. Straight leg raises of both legs elicit no lower back pain. The neurological exam is otherwise unremarkable. Which of the sets of results shown in Figure A would most likely be seen for this patient's vital capacity (VC), total lung capacity (TLC), the ratio of the forced expiratory volume in 1 second to the forced vital capacity of the lungs (FEV1/FVC), and the diffusing capacity for carbon monoxide (DLCO)?