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Related Concept Videos

Healthcare Associated Infections II: Preventive Measures01:22

Healthcare Associated Infections II: Preventive Measures

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Essential infection prevention measures are based on the knowledge of the infection chain, the modes of transmission in healthcare settings, and the use of the best practices in all healthcare settings. Compulsory public reporting of healthcare-associated infection rates is needed to allow individuals and the community to make informed choices regarding selecting a healthcare facility.
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Standard Precaution01:26

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Standard precautions are the minimum infection control safeguards used while caring for all patients, irrespective of their disease condition. They help prevent the spread of common infectious microorganisms to healthcare workers, patients, and visitors in all healthcare settings.
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Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and...
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Transmission-based precautions are for patients infected or suspected to be infected (or colonized) with organisms posing a significant risk to others. The transmission precautions include airborne and protective environment precautions.
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Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within...
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Infection control measures to decrease the burden of antimicrobial resistance in the critical care setting.

Caroline Landelle1, Kalisvar Marimuthu, Stephan Harbarth

  • 1aInfection Control Program, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland bInstitute of Infectious Diseases and Epidemiology, Tan Tock Seng Hospital, Singapore.

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Infection control measures like hand hygiene and decolonization can reduce multidrug-resistant organisms (MDROs) in intensive care units (ICUs). Tailoring strategies to local ICU epidemiology is crucial for effective resistance burden reduction.

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Area of Science:

  • Infectious Diseases
  • Critical Care Medicine
  • Public Health

Background:

  • Increasing prevalence of multidrug-resistant organisms (MDROs) in intensive care units (ICUs) globally.
  • Antimicrobial resistance poses a significant threat to patient outcomes in critical care settings.

Purpose of the Study:

  • To review infection control measures, excluding antibiotic stewardship, for reducing MDRO resistance in ICUs.
  • To assess the effectiveness of various interventions in preventing MDRO transmission.

Main Methods:

  • Systematic review of recent high-quality clinical studies.
  • Analysis of data on hand hygiene, decolonization, and selective decontamination.

Main Results:

  • Enhanced understanding of hand hygiene's role in reducing methicillin-resistant Staphylococcus aureus (MRSA).
  • Universal decolonization with chlorhexidine shows promise in reducing MDROs, necessitating vigilance for resistance.
  • Selective decontamination reduced Gram-negative bacilli resistance, but requires further trials for long-term risk/benefit assessment.

Conclusions:

  • Significant progress in identifying effective interventions, particularly decolonization, for preventing MDRO transmission in ICUs.
  • The precise and relative importance of different infection control measures remains challenging to determine.
  • Intervention strategies must be individualized based on the specific ICU's local epidemiology.