The changing character of infective endocarditis

Area of Science:

• Infectious Diseases
• Microbiology
• Cardiology

Background:

• The epidemiology of infective endocarditis (IE) is evolving.
• Increasing prevalence of antimicrobial-resistant organisms as causative agents in IE.
• Shifting microbial landscape of IE, with a decrease in Streptococcus viridans prevalence.

Purpose of the Study:

• To describe the changing patterns in causative organisms of infective endocarditis.
• To identify factors contributing to the rise of resistant organisms in IE.

Main Methods:

• Retrospective analysis of IE cases.
• Microbiological data collection and analysis.
• Correlation of causative agents with patient history and risk factors.

Main Results:

• Resistant organisms are now identified in over 50% of IE cases.
• Streptococcus viridans accounts for only 40% of IE cases.
• Increased antimicrobial use, intravenous heroin use, and cardiac surgery are associated with increased resistant organisms.

Conclusions:

• The spectrum of pathogens causing infective endocarditis has significantly changed.
• Antimicrobial resistance and invasive procedures are key drivers of this epidemiological shift.
• Clinical management strategies for IE may need to adapt to the prevalence of resistant organisms.