Blood Stream Infections from MDR Bacteria.

Area of Science:

• Infectious Diseases
• Critical Care Medicine
• Microbiology

Background:

• Bloodstream infections (BSIs) are a significant and growing public health issue, frequently occurring in intensive care units (ICUs).
• These infections are associated with high mortality rates, increased healthcare costs, and diagnostic challenges, particularly in cases of septic shock or delayed treatment.
• BSIs represent a critical challenge in hospital settings, demanding effective strategies for prevention and management.

Purpose of the Study:

• To review the epidemiological and microbiological features of BSIs, with a specific emphasis on ICU-acquired BSIs (ICU-BSIs).
• To analyze the antimicrobial resistance patterns of common pathogens causing ICU-BSIs.
• To compile and discuss available therapeutic options for managing these infections.

Main Methods:

• A comprehensive review of existing literature on BSIs and ICU-BSIs.
• Analysis of epidemiological data and microbiological characteristics of causative agents.
• Compilation of data on antimicrobial resistance and treatment strategies.

Main Results:

• ICU-acquired BSIs affect 5-7% of ICU patients.
• Key pathogens include multidrug-resistant (MDR) *Klebsiella pneumoniae*, *Escherichia coli*, *Acinetobacter baumannii*, and *Pseudomonas aeruginosa*.
• The prevalence of MDR *Enterobacteriaceae* has significantly increased from 6.2% (1997-2000) to 15.8% (2013-2016).

Conclusions:

• Preventing and treating sepsis is a global health priority, necessitating increased resource allocation.
• Identifying at-risk patients for BSIs is essential for early diagnosis and prompt, appropriate treatment.
• De-escalation strategies and rapid microbiological diagnostics are vital for effective management of BSIs.