Antibiotic stewardship is a critical effort to optimize how antibiotics are used, aiming to maximize their effectiveness against infections while minimizing the growing threat of drug resistance globally.

Antibiotics are vital medicines that have transformed healthcare by effectively treating bacterial infections and reducing illness and death worldwide [4]. However, their effectiveness is increasingly threatened by antibiotic resistance, a phenomenon where bacteria evolve to withstand the drugs designed to kill them [1, 4]. To combat this growing global health challenge, healthcare systems employ a strategy known as antibiotic stewardship.

Understanding Antibiotic Stewardship

Antibiotic stewardship is a coordinated program designed to promote the appropriate use of antibiotics [1]. Its primary goals are to optimize clinical outcomes for patients, ensure cost-effectiveness, and minimize unintended consequences such as toxic side effects, the selection of harmful pathogens, and the development of antibiotic resistance [2]. Essentially, stewardship aims to use the right antibiotic, at the right dose, for the right duration, only when truly needed [1, 2].

The Urgent Need to Preserve Antibiotics

The rise of multidrug-resistant organisms poses a significant threat, leading to increased hospital stays, higher mortality rates, and more complex infections [4, 8]. While antibiotic resistance is a global concern, low- and middle-income countries often bear a disproportionately higher burden due to factors like a lack of effective surveillance and widespread overuse of antibiotics [4].

One of the most challenging areas for antibiotic stewardship is the management of sepsis, a life-threatening condition caused by the body's overwhelming response to an infection [2, 3]. Sepsis is a leading cause of death from infectious diseases globally, and timely administration of broad-spectrum antibiotics is crucial [2, 3]. However, the difficulty in accurately diagnosing sepsis, coupled with the urgent need for treatment, can sometimes lead to the inappropriate prescribing of antibiotics [2, 3]. Inappropriate or suboptimal antibiotic use can result in treatment failure and secondary infections [8].

Key Strategies for Responsible Antibiotic Use

Healthcare providers employ several strategies to ensure antibiotics are used wisely:

Optimizing Initial (Empiric) Therapy: When an infection is suspected but the specific bacteria are not yet identified, doctors may start with “empiric” broad-spectrum antibiotics. Stewardship emphasizes selecting these initial antibiotics based on the local prevalence of multidrug-resistant organisms and established guidelines [1, 2, 8]. It also means avoiding unnecessary treatment of bacteria that are merely colonizing (present without causing infection) in areas like respiratory secretions or urinary catheters [1].
De-escalation and Duration: Once laboratory results identify the specific bacteria causing the infection and their susceptibility to different antibiotics, therapy can be narrowed to a more targeted antibiotic (de-escalation) [2, 8]. The goal is to administer the antibiotic for the shortest duration necessary to eliminate the infection, and to promptly discontinue therapy if an infection is no longer suspected [1, 5]. Switching from intravenous (IV) to oral antibiotics when appropriate is also a key strategy [2].
Appropriate Dosing: Antibiotics should be administered at the highest possible dose that is effective without causing toxicity [1]. For critically ill patients, optimizing dosing through prolonged infusions or therapeutic drug monitoring can be beneficial to ensure the drug reaches therapeutic levels [2, 8].

Stewardship in Vulnerable Populations

Certain patient groups present unique challenges for antibiotic stewardship:

Neonatal Intensive Care Units (NICUs): Diagnosing infections in newborns is difficult due to non-specific symptoms, leading to variations in treatment duration for suspected sepsis or pneumonia [5, 6]. Stewardship efforts here focus on optimizing culturing techniques, using NICU-specific antibiograms (charts showing local bacterial susceptibility), and quickly discontinuing antibiotics when infection is ruled out [5]. Risk-stratifying infants for early-onset sepsis can also help guide antibiotic initiation [6].
Children with Urinary Tract Infections (UTIs): Febrile UTIs are common in young children and require early, effective antibiotic treatment to prevent kidney damage [7]. However, increasing antibiotic resistance makes choosing the best initial therapy challenging. Stewardship involves understanding local pathogen susceptibility and identifying children at higher risk for difficult-to-treat UTIs [7].

A Collaborative Approach to Stewardship

Effective antibiotic stewardship requires a multi-faceted and collaborative approach. Multidisciplinary teams, including doctors, pharmacists, and infection control specialists, are essential for developing and implementing stewardship programs [5, 8]. These teams can utilize tools such as electronic health record-based clinical decision support and rapid molecular diagnostics to enhance decision-making [3]. Regular surveillance measures are also crucial to monitor antibiotic use and resistance patterns, providing valuable data to guide stewardship efforts [4, 5].

Sources

This article summarises published research for a general audience. It is not medical advice — talk to a qualified clinician about your own situation. Need help finding one? Browse doctors.