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| Format: | Recurso digital |
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Zenodo
2026
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| Online Access: | https://doi.org/10.5281/zenodo.19090714 |
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Table of Contents:
- <p>Background: Healthcare-Associated Infections (HAI) affect 1 in 31 hospitalized patients annually in the United States, causing<br>over 72,000 deaths and $28 to $45 billion in direct costs. Stethoscopes are contaminated with pathogenic bacteria in approximately<br>85% of cases yet remain absent from most infection control protocols. Despite Centers for Disease Control and Prevention<br>(CDC) classification as “noncritical” devices, stethoscopes function as a “third hand” in disease transmission, touching patients<br>multiple times daily while rarely being cleaned between uses.<br>Methods: Evidence synthesis examining stethoscope contamination rates, microbial species identified, compliance with cleaning<br>practices and systemic barriers to hygiene. Analysis of behavioral change literature and successful infection control interventions.<br>Results: Observational studies document fewer than 15% of clinicians clean stethoscopes between patients. Cultured stethoscopes<br>yield Methicillin-Resistant Staphylococcus Aureus (MRSA), Clostridium difficile (C. diff), Vancomycin-Resistant Enterococci<br>(VRE) and multidrug-resistant organisms at levels comparable to contaminated hands. Point of care disinfection stations paired<br>with hand hygiene protocols increased compliance from baseline 19% to 54%, reaching 94% among active users. Isopropyl<br>alcohol, the most common disinfectant, has proven ineffective against spore-forming organisms and viruses.<br>Discussion: This review summarizes evidence of stethoscope contamination and its role in transmission of HAIs, outlines the<br>behavioural and systemic barriers that sustain poor compliance and proposes a practical, evidence-informed implementation<br>framework for clinicians, hospitals, regulatory agencies and patients. Integrating stethoscope hygiene into standard multimodal<br>infection prevention strategies and accreditation metrics represents a realistic opportunity to reduce preventable harm.</p>