WHO/INRUD prescribing indicators among tertiary regional referral hospitals in Dar es Salaam, Tanzania: a call to strengthen antibiotic stewardship programmes
Judith K. Costantine, George M. Bwire, David T. Myemba, Godfrey Sambayi, Belinda J. Njiro, Amosi Kilipamwambu, Novatus Ching’oro, Rehema Shungu, Mathew Mganga, Mtebe Majigo
Abstract
Abstract Background Antibiotic prescribing should be guided by national essential medicines lists (NEMLs) and treatment guidelines; however, there are inadequate data on antibiotic utilization patterns in tertiary hospitals in Tanzania. This study aimed to determine antibiotic prescribing patterns in tertiary hospitals in Dar es Salaam, Tanzania. Methods A retrospective cross-sectional study was conducted in three regional referral hospitals. About 200 prescription records from 2020 to 2022 were analysed at each hospital for prescribing patterns using WHO/ International Network of Rational Use of Drugs (INRUD) indicators (1993) and the AWaRe 2021 classification. Factors associated with receiving an antibiotic prescription were assessed using a logistic regression model. Facilities were ranked on prescribing practices using the index of rational drug prescribing (IRDP). Results A total of 2239 drugs were prescribed, of which 920 (41.1%) were antibiotics. An average of 3.7 ± 1.5 (optimal: 1.6–1.8) total medicines and 1.53 ± 0.78 antibiotics were prescribed per patient. About 88.0% (528) of the prescriptions contained antibiotics (optimal: 20.0%–26.8%), while 78.2% (413) of all antibiotic prescriptions contained injections (optimal: 13.4%–24.1%). Furthermore, 87.5% (462) of the antibiotics were prescribed in generic names (optimal: 100%), while 98.7% (521) conformed to the NEML (optimal: 100%). Metronidazole was the most frequently prescribed antibiotic (39.2%; n = 134), followed by ceftriaxone (37.1%, n = 127) and amoxicillin/clavulanic acid (8.5%, n = 29). Conclusions We found substantial empirical prescribing and overuse of antibiotics exceeding WHO recommendations. Antibiotic overuse varied across the hospitals. Being male, having underlying conditions such as diabetes mellitus, and/or being treated at Temeke hospital were associated with receiving an antibiotic prescription. We recommend strengthening antibiotic stewardship programmes in the studied facilities.