Shewanella algae-induced relapsing peritoneal dialysis-associated peritonitis: a case report

This article presents a case report of relapsing peritoneal dialysis-associated peritonitis caused by <i>Shewanella algae</i>. The patient has experienced relapsing peritonitis, accompanied by abdominal pain and cloudy peritoneal dialysis fluid. Ascites culture revealed an infection with <i>Shewanella algae</i>. Treatment with high-concentration gentamicin sulfate via intra-catheter antibiotic instillation led to complete resolution of the infection, with no recurrence observed. <i>Shewanella algae</i>-induced peritoneal dialysis-related peritonitis is rare, and its relapsing nature may be attributed to bacterial biofilm formation within the catheter. High-concentration antibiotic lock therapy demonstrated efficacy in eradicating the infection. This report explores the efficacy and application value of antibiotic lock therapy in managing relapsing <i>Shewanella algae</i>-associated peritoneal dialysis-related peritonitis.