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49-Year-Old Man With Fever, Night Sweats, Palpitations, and Shortness of Breath

      A 49-year-old man presented to the clinic reporting fever, night sweats, palpitations, and shortness of breath. He had been experiencing symptoms for the past 6 weeks, starting with severe fatigue after a usual 7-mile run, followed by 2 weeks of intermittent fever and 4 weeks of dry cough and night sweats. During this time, he experienced 10-lb weight loss and physical activity was limited by shortness of breath; he was also experiencing intermittent palpitations. At baseline he was able to run up to 15 miles, but experienced substantial loss of exercise tolerance and was no longer able to sustain prolonged running. He had been seen by his primary care physician and diagnosed with recurrent episodes of bronchitis. With multiple rounds of empirical oral antibiotics, most recently azithromycin approximately 3 weeks before his presentation, his symptoms improved after each course followed by a relapse.
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      CORRECT ANSWERS: 1. d. 2. c. 3. c. 4. e. 5. b