[Combined antibiotic therapy following heart surgery]

Area of Science:

• Microbiology
• Pharmacology
• Infectious Diseases

Context:

• Surgical site infections pose significant risks, particularly after cardiac surgery.
• Understanding antibiotic efficacy and patient drug levels is crucial for effective treatment.
• The etiological factors of post-operative complications require elucidation.

Purpose:

• To assess the in vitro efficacy of various antibiotic combinations against surgical infection pathogens.
• To correlate bacterial isolate sensitivity with antibiotic concentrations in surgical patients.
• To determine optimal antibiotic regimens and maximum dosages for post-cardiac surgery purulent complications.

Summary:

• Evaluated in vitro efficacy of semi-synthetic penicillins, macrolides, aminoglycosides, and tetracyclines against surgical infection agents.
• Demonstrated a correlation between bacterial sensitivity and antibiotic levels in patients.
• Elucidated the role of etiological factors in post-cardiac surgery complications.
• Developed rational antibiotic therapy schemes and determined maximum semi-synthetic penicillin doses for purulent processes after open-heart surgery with cardiopulmonary bypass.

Impact:

• Provides evidence-based guidelines for antibiotic selection in surgical infections.
• Informs optimal dosing strategies for semi-synthetic penicillins in complex post-operative scenarios.
• Aims to reduce post-operative complications and improve patient outcomes after cardiac surgery.