Infection control measures to limit antimicrobial resistance

Area of Science:

• Infectious Diseases
• Critical Care Medicine
• Microbiology

Background:

• Rising antimicrobial resistance (AMR) severely restricts therapeutic options for critical care infections.
• Decreased susceptibility to vancomycin in Staphylococcus aureus poses a significant threat, potentially indicating infection with a highly virulent pathogen resistant to most antibiotics.

Purpose of the Study:

• To review infection control strategies for containing antimicrobial resistance in intensive care units (ICUs).
• To evaluate the effectiveness of surveillance and non-antimicrobial restriction methods in managing resistant organisms.

Main Methods:

• Review of existing literature on infection control practices in critical care settings.
• Focus on surveillance, hand hygiene, patient isolation, and barrier techniques.
• Discussion of challenges in implementation, such as staff workload and turnover.

Main Results:

• Current surveillance methods using clinical isolates are insufficient to identify most carriers of resistant organisms.
• Eradication of carriage is often unsuccessful, particularly with extranasal colonization of methicillin-resistant Staphylococcus aureus (MRSA).
• Transmission is mainly due to healthcare worker hand contamination.

Conclusions:

• Effective containment of resistant organisms in ICUs necessitates a multi-faceted approach including hand hygiene, isolation, and barrier precautions.
• The optimal intensity of surveillance for controlling resistant organism spread in non-outbreak situations remains unclear.
• Compliance with infection control measures is challenged by high staff turnover and heavy workloads.