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[Azlocillin--synovial fluid levels after intravenous doses]
Zeitschrift Fur Orthopadie Und Ihre Grenzgebiete
|January 1, 1983
Summary
This study investigated azlocillin levels in knee joint synovial fluid after surgery. High antibiotic concentrations were achieved, remaining effective for three hours, but surgical intervention may still be needed for joint infections.
Area of Science:
- Pharmacology
- Orthopedic Surgery
- Infectious Diseases
Background:
- Joint infections often require antibiotic treatment.
- Understanding antibiotic penetration into synovial fluid is crucial for effective treatment.
- Azlocillin is a penicillin-type antibiotic used for bacterial infections.
Purpose of the Study:
- To determine azlocillin concentrations in knee-joint synovial fluid after intravenous administration.
- To assess the duration of therapeutic azlocillin levels in synovial fluid.
- To correlate synovial fluid azlocillin levels with serum concentrations.
Main Methods:
- Investigated azlocillin levels in serum and synovial fluid of patients undergoing lower limb aseptic surgery.
- Analyzed 30 synovial fluid samples to determine mean azlocillin concentrations.
- Measured azlocillin levels at various time points after a 5g intravenous infusion.
Main Results:
- Mean synovial fluid azlocillin concentration reached approximately 40 μg/ml within 10 minutes post-infusion.
- Peak synovial fluid levels were observed around 90 minutes after administration.
- Therapeutic azlocillin levels (>64 μg/ml) were maintained in synovial fluid for approximately 3 hours.
Conclusions:
- Intravenous infusion of 5g azlocillin achieves clinically relevant concentrations in knee-joint synovial fluid.
- Sustained therapeutic levels suggest potential efficacy in treating joint infections.
- Despite favorable pharmacokinetics, surgical reintervention is often necessary for definitive cure of joint infections.