Fluconazole Dosing for Disseminated Candidiasis in Transplant Patients
Initial Treatment Considerations
- For most transplant patients with disseminated candidiasis, fluconazole 400 mg (6 mg/kg) daily following a loading dose is recommended as maintenance therapy, with treatment continuing until all signs, symptoms, and radiological abnormalities have resolved, which typically requires several weeks to months of therapy 1, 2, 3, 4
- Fluconazole is particularly appropriate for patients who are clinically stable and have normal renal function 2
Alternative Initial Therapy Options
- For severely ill transplant patients or those with rapidly progressing disseminated candidiasis, consider lipid formulation of amphotericin B (3-5 mg/kg daily) as initial therapy, followed by step-down to fluconazole after clinical stabilization, or an echinocandin (caspofungin: 70-mg loading dose, then 50 mg daily; anidulafungin: 200-mg loading dose, then 100 mg daily; or micafungin: 100 mg daily) as initial therapy in unstable patients 2
Duration of Therapy
- Treatment should continue for at least 2 weeks after documented clearance of Candida from the bloodstream, and for disseminated disease with organ involvement, longer therapy is required until resolution of all lesions on imaging studies, as premature discontinuation of antifungal therapy can lead to relapse 2
Monitoring During Treatment
- Regular blood cultures should be performed to document clearance of candidemia, and ophthalmological examination should be performed to rule out endophthalmitis, with transplant patients having immunosuppression reduced when possible (without risking graft rejection) until the infection has begun to improve 1, 2, 5
Special Considerations for Transplant Recipients
- Solid organ transplant recipients at high risk of candidiasis may benefit from prophylactic fluconazole (200–400 mg [3–6 mg/kg] daily), and for hematopoietic stem cell transplant recipients, fluconazole 400 mg daily is recommended during the period of neutropenia, with intravascular catheter removal strongly considered in transplant patients with candidemia 1, 6