RESUMEN
BACKGROUND: There is a need to examine the impact of increasingly prevalent antibiotic shortages on patient outcomes and on the emergence and spread of antimicrobial resistance (AMR). OBJECTIVES: To: 1) assess patterns and causes of shortages, 2) investigate the effect of shortages on health systems and patient outcomes, and 3) identify strategies for forecasting and managing shortages. DATA SOURCES: PubMed/MEDLINE, EMBASE, Scopus, and Web of Science. STUDY ELIGIBILITY CRITERIA: Studies published in English during January 2000-July 2023. PARTICIPANTS: Healthcare, policy and strategic teams managing and responding to shortages. Patient populations (adult and children) affected by shortages. INTERVENTIONS: Strategies, policies, and mitigation options for managing and responding to antibiotic drug shortages. RISK OF BIAS: Methodological quality of included studies was reviewed using the most appropriate tool from Joanna Briggs Institute critical appraisal tool for each study design. METHODS: Data synthesis was qualitative and quantitative using descriptive statistics. RESULTS: The final analysis included 74 studies (61/74, 82.4% high-income countries). Shortages were most reported for piperacillin-tazobactam (21/74, 28.4%) with most of the reported antibiotics being in the WHO Watch category (27/54, 51%). Frequent cause of shortages was disruption in manufacturing including supply of active pharmaceutical ingredient and raw materials. Clinical implications of shortages included increased length of hospital stay, treatment failure after using inferior alternative agents and negative impact on antimicrobial stewardship programmes (AMS). Robust economic impact analysis of shortages is unavailable. Successfully reported mitigation strategies were driven by AMS and infectious diseases teams in hospitals. CONCLUSIONS: Antibiotic shortages are directly or indirectly driven by economic viability and reliance on single source ingredients. The limited data on clinical outcomes indicates mixed effect with some infections becoming more difficult to treat, though there is no robust data on the impact of shortages on AMR. The mitigation strategies to manage shortages rely heavily on AMS teams.
