How do you approach prophylactic antibiotics in patients who continue to have recurrent neutropenic fever following chemotherapy for solid tumors despite chemotherapy dose reduction and growth factor support?  

This has to be individualized to the patient. It depends on the length of neutropenia, previous infections, and local antibiotic resistance. If the patient develops neutropenic fever after every cycle of chemotherapy and no obvious nidus of infection has been identified, a trial of a fluoroquinolone...