Efficacy and safety of subcutaneous administration of ceftazidime as a salvage therapy in geriatrics: a case report.

Ceftazidime is a third-generation cephalosporin used for the treatment of Gram-negative bacteria only approved for parenteral use by intravenous and intramuscular route. In some clinical situations, off-label subcutaneous injection could be a salvage route for the administration of antibiotics, especially in geriatrics, despite the paucity of evidence about efficacy and safety. We report a case of a successful and well-tolerated subcutaneous ceftazidime therapy in a 90-year-old woman for the treatment of an acute urinary tract infection caused by Pseudomonas aeruginosa with therapeutic drug monitoring data.