Soru

A $58$-year-old man is evaluated in the hospital on the third day of his admission for community-acquired pneumonia. His symptoms at presentation included fever, productive cough, and pleuritic chest pain. A chest radiograph on admission showed a left lower lobe consolidation. He was empirically started on intravenous ceftriaxone and azithromycin. Today, the patient reports significant improvement in his symptoms. He has been afebrile for the past $24$ hours. Current vital signs show a heart rate of $78$/min, blood pressure of $128/82$ mmHg, and respiratory rate of $16$/min. His oxygen saturation is $96\%$ on room air. Sputum culture obtained on admission has grown *Streptococcus pneumoniae*. Antimicrobial susceptibility testing demonstrates that the isolate is sensitive to penicillin, amoxicillin, ceftriaxone, and levofloxacin. Which of the following is the most appropriate next step in the management of this patient?