[Antibacterial prophylaxis in heart surgery interventions with extracorporeal circulation]

Area of Science:

• Cardiology
• Pharmacology
• Infectious Disease

Background:

• Extracorporeal circulation during heart surgery poses risks for thromboembolism.
• Antibacterial prophylaxis is crucial in patients undergoing cardiac procedures.
• Standard antibiotic dosing may be altered by physiological changes during cardiopulmonary bypass.

Purpose of the Study:

• To evaluate the pharmacokinetics of gentamicin and tobramycin in patients undergoing heart surgery with extracorporeal circulation.
• To determine the efficacy and safety of a modified antibiotic administration regimen.
• To optimize antibacterial prophylaxis in this patient population.

Main Methods:

• Clinico-laboratory studies involving 30 patients undergoing heart surgery.
• Administration of gentamicin and tobramycin for antibacterial prophylaxis.
• Analysis of antibiotic pharmacokinetics, including distribution volume and clearance.
• Evaluation of a modified (modulatory) antibiotic administration regimen.

Main Results:

• Significant alterations in the distribution volume and clearance of gentamicin and tobramycin were observed.
• A modified administration regimen was developed based on pharmacokinetic changes.
• The modulatory regimen demonstrated high prophylactic efficacy against infections.
• No significant side effects were reported with the modified regimen.

Conclusions:

• Standard antibiotic regimens require modification in patients undergoing heart surgery with extracorporeal circulation.
• A tailored, modulatory approach to gentamicin and tobramycin administration is safe and effective.
• Optimized antibiotic prophylaxis can reduce infectious complications in cardiac surgery patients.