Infectious endocarditis: diagnosis and treatment

Area of Science:

• Cardiology
• Infectious Diseases
• Medical Microbiology

Background:

• Infectious endocarditis is a severe infection of the heart's inner lining, causing significant illness and death.
• Risk factors include prosthetic heart valves, structural heart disease, IV drug use, and invasive procedures.
• Clinical suspicion arises from unexplained fevers, night sweats, or systemic illness symptoms.

Purpose of the Study:

• To summarize the key aspects of infectious endocarditis diagnosis and management.
• To highlight diagnostic criteria and treatment considerations.
• To emphasize the importance of surgical consultation and long-term patient care.

Main Methods:

• Diagnosis relies on the established Duke criteria, integrating clinical, laboratory, and echocardiographic data.
• Treatment involves antibiotics chosen based on valve type (native vs. prosthetic), causative organism, and susceptibility testing.
• Common pathogens identified in blood cultures include Staphylococcus aureus, viridans Streptococcus, enterococci, and coagulase-negative staphylococci.

Main Results:

• Infectious endocarditis can compromise valvular integrity, necessitating surgical evaluation for severe or persistent cases.
• Aggressive infections, emboli, or valvular rupture are indications for surgical consultation.
• Successful antibiotic therapy is the cornerstone of treatment, with specific regimens tailored to the infection's characteristics.

Conclusions:

• Early recognition and accurate diagnosis via Duke criteria are vital for effective management of infectious endocarditis.
• Antibiotic selection must be guided by pathogen identification and antimicrobial susceptibility.
• Post-treatment patient education on dental hygiene and prophylactic measures is essential for preventing future episodes and complications.