Trimethoprim-Sulfamethoxazole Dosing for UTI in Stage 4 CKD

Alternative Options for UTI in CKD

• The Infectious Diseases Society of America recommends considering alternative antibiotics, such as β-lactam antibiotics or fluoroquinolones, for UTI treatment in patients with stage 4 CKD, especially when trimethoprim-sulfamethoxazole is contraindicated, with β-lactam antibiotics having inferior efficacy compared to other UTI antimicrobials 1, 2
• Nitrofurantoin is contraindicated in patients with creatinine clearance <30 mL/min due to inadequate urinary concentrations and increased risk of toxicity, according to the Clinical Infectious Diseases guidelines 1, 2

Important Caveats

• The Infectious Diseases Society of America recommends obtaining urine culture and susceptibility testing before initiating therapy in patients with CKD, as they are at higher risk for resistant organisms 3