Pediatric adverse drug reactions collected by an electronic reporting system in a single tertiary university hospital

Purpose: The incidence of adverse drug reactions (ADRs) is increasing. However, studies on the prevalence of ADRs in children are rare. The aim of this study was to investigate the causative drugs and clinical features of ADRs for children in a tertiary university hospital of Korea. Methods: We retrospectively collected ADRs by a computerized self-reporting system in Asan Medical Center. ADRs of children under the age 18 were collected from January 2005 to August 2015, and we analyzed only ADRs containing current symptoms among total ADR data. Results: A total of 1,408 ADR cases were reported, There were 764 male (54.3%) and 644 female patients (45.7%), and the mean age was 11.5 +/- 5.8 years (range, 0-18 years). Antibiotics (n = 479, 34.0%) were the most common causative drugs, followed by tramadol (n = 173, 12.3%), nonsteroidal anti-inflammatory agents (NSAIDs) and acetylsalicylic acid (n = 103, 7.3%), narcotics (n = 91, 6.5%), anti-neoplastics (n = 87, 6.2%), and sedatives (n = 82, 5.8%). The most common clinical features were skin manifestations (n = 500, 34.4%). Gastrointestinal symptoms (n = 435, 29.9%) were the second most common clinical features, followed by neuropsychiatric symptoms (n = 155, 10.7%) and respiratory symptoms (n = 123, 8.5%). Among antibiotics, glycopeptides (n = 110, 23.0%), third-generation cephalosporins (n = 83, 17.3%), and penicillin/beta-lactamase inhibitors (n = 60, 12.7%) were the most frequently reported causative drugs. Conclusion: Antibiotics were the most reported common causative drugs of ADRs in children, followed by tramadol, NSAID, and narcortics. Compared with adults, the prevalence of contrast medium-induced ADR was lower in children with a higher prevalence of sedative-associated ADR. Greater attention to possible ADRs in children is needed among medical personnel.