Drivers of antimicrobial prescriptions in hospitals from Asian low, middle and high income countries and implications for antibiotic stewardship

This qualitative study across ten hospitals in Singapore, Nepal, and Thailand identifies structural deficiencies such as limited laboratory capabilities and weak guidelines, alongside clinician prioritization of short-term patient safety, as key drivers of broad-spectrum antibiotic overuse, highlighting the need for systemic improvements to support effective antimicrobial stewardship.

The Gist

Imagine a hospital as a massive, busy kitchen. In this kitchen, the "chefs" (doctors) are constantly cooking up a special ingredient called antibiotics to fight off invisible invaders (bacteria) that are making patients sick.

The problem is that these chefs are using too much of this ingredient, and they are using the "super-strong" versions even when a mild spice would do. This is like using a flamethrower to kill a single ant. If you keep doing this, the ants learn to wear fireproof suits, and soon, the flamethrower won't work at all. This is what scientists call antibiotic resistance.

This paper is like a detective story where researchers went into the kitchens of hospitals in three very different Asian countries: Singapore (a high-tech, wealthy city), Thailand (a middle-income country), and Nepal (a lower-income country). They wanted to find out why the chefs were overusing the flamethrower.

Here is what they discovered, explained simply:

1. The Broken Tools and Missing Recipes

The biggest reason chefs used too much antibiotic wasn't because they were bad cooks; it was because their kitchen was missing essential tools.

• The "Magic Microscope" was missing: In many hospitals, there was no way to quickly test exactly which bug was making the patient sick. It's like trying to bake a cake without knowing if you have flour or sugar. Without this test, chefs had to guess and just throw in the strongest, broad-spectrum antibiotic to be safe.
• The "Instruction Book" was outdated: Many hospitals didn't have up-to-date rulebooks on how to cook safely.
• The "Quality Control" was shaky: Sometimes, the antibiotics themselves were unreliable, so doctors felt they had to use more just to be sure it worked.

2. The "Just in Case" Panic

Even when the kitchen had good tools, the chefs were still scared.
Imagine a chef is cooking for a VIP guest. If the guest starts coughing, the chef thinks, "If I don't use the flamethrower right now, the guest might get worse in five minutes. I can't risk it!"
The doctors felt the same way. They were so worried about a patient getting worse immediately that they chose the "safe" route of over-prescribing, ignoring the fact that this would create "fireproof ants" (superbugs) for the future.

3. The Short-Term vs. Long-Term Trap

The study found that everyone was playing a game of "Fix it Now, Worry Later."

• The Short-Term Win: Giving a strong antibiotic usually makes the patient feel better quickly. It's like putting a bandage on a leaky roof during a storm—it stops the water immediately.
• The Long-Term Loss: But that bandage is made of plastic that clogs the gutters for years. By focusing only on stopping the storm today, the hospitals are accidentally building a flood for tomorrow.

The Big Takeaway

The researchers concluded that you can't just yell at the chefs to "stop using the flamethrower." That won't work.

To fix this, we need to upgrade the kitchen:

1. Give them working "Magic Microscopes" (better lab tests) so they know exactly what they are fighting.
2. Give them fresh "Instruction Books" (updated guidelines).
3. Make sure the "Quality Control" is solid.

If we give the doctors the right tools and support, they will naturally stop guessing and start cooking with precision. This will help stop the "ants" from learning to wear fireproof suits, keeping our antibiotics working for everyone in the future.

Technical Summary

Technical Summary: Drivers of Antimicrobial Prescriptions in Asian Hospitals

1. Problem Statement
The study addresses the critical public health challenge of excessive antibiotic use in hospital settings across Asia, a primary driver in the emergence and spread of drug-resistant pathogens. While the clinical necessity of antibiotics is acknowledged, the specific contextual factors influencing prescribing behaviors in diverse economic settings (low, middle, and high-income countries) remain under-explored. The core problem is the gap between ideal antibiotic stewardship and actual clinical practice, driven by a complex interplay of systemic constraints and individual clinician decision-making processes.

2. Methodology
The research employed a large-scale qualitative study design to investigate the contextual influences on prescribing behavior.

• Scope: The study covered ten hospital institutions across three Asian countries representing different economic tiers: Singapore (high-income), Nepal (low-income), and Thailand (middle-income).
• Data Collection: Researchers utilized semi-structured interviews and ethnographic observations to capture both self-reported behaviors and observed practices.
• Participants: The study involved a multidisciplinary cohort of 194 stakeholders, including:
  • Physicians (54.1%)
  • Nurses (19.6%)
  • Pharmacists (12.4%)
  • Management staff (13.9%)
• Data Analysis: Thematic analysis was conducted using QSR NVivo 14 software to identify recurring patterns and drivers across the different settings.

3. Key Contributions

• Cross-Country Comparative Insight: Unlike studies focused on single nations, this research provides a comparative analysis of prescribing drivers across the economic spectrum of Asia, highlighting both universal and context-specific challenges.
• Multidisciplinary Perspective: By integrating the viewpoints of physicians, nurses, pharmacists, and management, the study offers a holistic view of the hospital ecosystem rather than isolating the prescriber.
• Identification of Systemic vs. Individual Drivers: The study distinguishes between structural barriers (e.g., lab capabilities) and cognitive/behavioral factors (e.g., defensive medicine), providing a nuanced framework for intervention.

4. Key Findings (Results)
The analysis revealed that prescribing behaviors are heavily dictated by structural and systemic factors, which often override clinical guidelines:

• Primary Drivers of Over-prescription:
  • Limited Diagnostic Capacity: A lack of robust microbiology laboratory capabilities forces clinicians to prescribe empirically rather than targeted.
  • Supply Chain Concerns: Worries regarding the quality and availability of specific antibiotics lead to the use of broader-spectrum alternatives.
  • Policy Gaps: Weak infection prevention and control (IPC) policies and the absence of relevant, updated clinical guidelines contribute to prolonged and broad-spectrum usage.
• Impact of System Support: In institutions where these structural supports (diagnostics, guidelines, IPC) were robust, prescribing decisions shifted toward being less defensive and more targeted.
• Persistent Behavioral Barriers: Even in well-supported environments, prescriber responsibility and the fear of immediate patient deterioration continued to influence practice.
• Risk Perception: A consistent finding across all settings was the tendency for clinicians to prioritize short-term perceived benefits (treating the immediate patient) over long-term risks (contributing to antimicrobial resistance).

5. Significance and Implications
The study underscores that improving antibiotic stewardship in Asian hospitals requires more than just educational campaigns for clinicians. It necessitates systemic interventions that address the root causes of defensive prescribing:

• Infrastructure Investment: Strengthening microbiology laboratories and ensuring access to high-quality antibiotics are prerequisites for targeted therapy.
• Guideline Development: Creating and disseminating context-specific, up-to-date clinical guidelines is essential.
• Cultural Shift: Interventions must address the cognitive bias of prioritizing immediate patient outcomes over long-term public health, potentially through improved diagnostic tools that reduce uncertainty.
• Policy Action: Strengthening infection prevention and control policies is critical to reducing the perceived need for broad-spectrum prophylaxis.

In conclusion, the paper argues that effective stewardship programs must be tailored to the specific structural limitations of low, middle, and high-income settings while simultaneously addressing the universal psychological drivers of clinical decision-making.