A 48 year old male is admitted to the hospital after experiencing a fever and malaise for several days. He states that he has some shortness of breath and chest pain when he coughs. Imaging of the chest reveals a large loculated effusion and empyema in the right lower lung. The decision is made to place a chest tube (thoracostomy) and drain the fluid. The pleural fluid returns with a pH of 7.18, a glucose of 55 mg/dL, and a lactate of 1,150 units/L. Initial drainage was 200 mL in the first 24 hours, contained pus, and had a putrid odor. Cultures are pending. In addition to drainage and appropriate antibiotic therapy, what else can be done to manage this patient?