Final answer:
Additional antibiotics may be added in cases of prolonged neutropenia or persistent neutropenic fever. The choice of antibiotics depends on the type of infection and the causative agent. Examples of antibiotics that may be added include vancomycin, penicillin G, chloramphenicol, ceftriaxone, gentamicin, fluoroquinolones, levofloxacin, and doxycycline.
Step-by-step explanation:
When neutropenic fever persists despite empiric antibiotic (ABX) therapy or when there is prolonged neutropenia, additional ABX may be added. The choice of ABX depends on the type of infection and the causative agent. In cases of superinfection or drug-resistant bacteremia, different antibiotics such as vancomycin may be used. Examples of antibiotics that may be added include penicillin G, chloramphenicol, ceftriaxone, gentamicin, fluoroquinolones, levofloxacin, and doxycycline.