Background: Ethiopia is one of the countries where the healthcare system is not yet developed to the required level; hence, it is not uncommon that drugs, particularly anti-microbials, are inappropriately used for infections by any causative agents, with or without prescription, in combination or not, and, of more concern, without sensitivity tests. So, it was considered important to assess the magnitude of inappropriate antimicrobial use among inpatients attending Madda Walabu University Goba Referral Hospital, southeast Ethiopia. Methods: A health institution-based cross-sectional study was conducted from September 2018 to April 2019. Patient folders from collaborating wards were reviewed for antibiotic use. Inappropriateness of a drug or its dosage, or both, was considered in reference to the Ethiopian national treatment guideline. The information obtained was analyzed using SPSS version 20. Patterns of prescription of antimicrobials for the hospitalized patients were analyzed using simple descriptive statistics. Results: A total of 801 antibiotics were written as prescriptions to 471 clients, 228 (47.6%) of whom had received two or more antibiotics at the time of the study. Of the total prescribed antibiotics, 142 (30.1%) had an inappropriate prescription. Genitourinary tract infections accounted for 42 (30.4%) of the inappropriate prescriptions due to the wrong dose and drugs. Cephalosporins were the most extensively prescribed class of antibiotics, 24.4% of which were inappropriately prescribed. Intravenous formulations made up the largest proportion of prescriptions, at 335 (41.8%). The most commonly prescribed antimicrobials were cepha-losporins, 178 (38%); nitroimidazoles, 115 (24.5%); and macrolides, 53 (11.3%), while ceftriaxone was prescribed in 249 (53%) and metronidazole in 123 (26.2%) cases. Conclusion: Low dose, inadequate duration and empiric use of antibiotics were major causes of inappropriate use in the study area. Therefore, local antimicrobial sensitivity tests, antibiotic stewardship and following the national treatment guideline are recommended to overcome inappropriate antimicrobial use.
