Ceftriaxone-Induced Encephalopathy in a Patient With End-Stage Renal Disease on Hemodialysis.

Ceftriaxone-induced encephalopathy is a rare but known adverse effect secondary to neurotoxicity, especially in patients with end-stage renal disease (ESRD) on hemodialysis. The common presenting symptoms include myoclonus, psychosis, and seizures. We are presenting a case of a 77-year-old female patient who presented with confusion and jerky movements of her lips and extremities. Her initial workup was negative for stroke and seizure disorder. A probable diagnosis of ceftriaxone-induced encephalopathy was made using an Adverse Drug Reaction (ADR) probability scale (Naranjo scale) with a Naranjo score of 5. The patient's symptoms resolved after discontinuation of ceftriaxone. Ceftriaxone is a commonly used intravenous antibiotic in the inpatient setting, and thus clinicians should be aware of this rare adverse reaction in patients with ESRD.

Successful Treatment of Single Infected Calciphylaxis Lesion With Intralesional Injection of Sodium Thiosulfate at High Concentration.

INTRODUCTION: Calciphylaxis is a very complicated disease that usually presents in patients with end-stage renal disease (ESRD). Treatment for calciphylaxis is not well standardized and typically involves a multidisciplinary approach. One of the common medications used in calciphylaxis treatment is sodium thiosulfate (STS). However, its intravenous injection is associated with multiple side effects. CASE REPORT: The authors present a case report of an intralesional injection of STS followed by a literature review of the common treatment modalities and possible further use of intralesional injections. A 51-year-old man with ESRD on peritoneal dialysis presented with a right calf biopsy-proven calciphylaxis lesion measuring 3.1 cm x 3.9 cm. About the same time, he had Pseudomonas-associated peritoneal catheter peritonitis. The calciphylaxis lesion was treated with bimonthly intralesional injections of STS. The lesion had a complete resolution by week 9. CONCLUSIONS: The authors believe a higher local concentration of STS leading to a faster resolution and requiring less frequent injections needs to be further evaluated. Following additional studies, they also propose a greater use of intralesional STS injections in a select set of patients in the future.