LAUSR

Severe infection is a primary cause of mortality in children facing challenges from multidrug-resistant (MDR) pathogens, particularly MDR Acinetobacter baumannii. Tigecycline has an expanded spectrum of antibacterial activity, and some successful instances of its use in children have been reported. We conducted a retrospective chart review of children treated at a tertiary hospital between May 1, 2012 and May 1, 2017 to examine the efficacy and safety of tigecycline in children with severe infection. A total of 110 patients (69 males) were enrolled in this study, including 46 MDR A. baumannii infection patients, encompassing 51 A. baumannii strains. Totally, the median duration of tigecycline therapy was 10 days (range, 2–47 days), with a clinical improvement rate of 47.27% (52/110). In A. baumannii infection group, the clinical improvement rate was 50% (23/46) and the microbiology eradication rate was 50.98% (26/51). No adverse events were reported during therapy; however, in one case, a 9-year-old boy with hematologic disease developed tooth discoloration.Conclusion: Although some patients benefited from tigecycline, the efficacy and safety of tigecycline should not be overvalued. Additional data from randomized controlled trials are required to assess the administration of tigecycline.What is Known:• Severe infection is a primary cause of mortality in pediatric patients and its treatment is facing challenges from an increasing number of multidrug-resistant (MDR) pathogens.• Tigecycline has an expanded spectrum of antibacterial activity.• Several case reports have indicated that tigecycline could be used as a salvage therapy in children when options are limited or non-existent.What is New:• We found that rate of clinical improvement was different in various groups of different infection. The efficacy of tigecycline should not be overvalued.• Six dosage models and different infection types were observed in our series, with different improvement and eradication rate, indicating that more data are required to identify a proper tigecycline dosage.