Cefsulodin kinetics in renal impairment
Clinical Pharmacology and Therapeutics
|May 1, 1982
Summary
Cefsulodin clearance significantly decreases with reduced kidney function, necessitating dose adjustments for patients with renal insufficiency. Hemodialysis effectively removes cefsulodin, but post-dialysis dosing requires careful consideration.
Area of Science:
- Pharmacokinetics
- Nephrology
- Infectious Diseases
Background:
- Cefsulodin is an antibiotic used to treat infections.
- Renal insufficiency can significantly alter drug pharmacokinetics.
- Understanding cefsulodin's elimination in renal impairment is crucial for safe and effective dosing.
Purpose of the Study:
- To determine the pharmacokinetic profile of cefsulodin in individuals with normal and impaired renal function.
- To assess the impact of hemodialysis on cefsulodin elimination.
- To establish appropriate cefsulodin dosing recommendations for patients with renal insufficiency.
Main Methods:
- Cefsulodin pharmacokinetics were studied in subjects with varying glomerular filtration rates (GFR).
- A two-compartment model was used to describe elimination kinetics.
- Drug concentrations were measured during and after hemodialysis sessions.
Main Results:
- Cefsulodin's elimination half-life (t1/2) and total body clearance (ClT) were inversely related to GFR.
- In anuric patients, t1/2 increased to 13.0 hr and ClT decreased to 9.5% of normal.
- Hemodialysis reduced cefsulodin plasma concentration by 60% and shortened t1/2 to 2.1 hr.
Conclusions:
- Renal failure significantly reduces cefsulodin total body clearance.
- A linear relationship exists between ClT and GFR.
- For hemodialysis patients, maintenance doses should be reduced to 10% of normal, with 60% of the dose administered post-hemodialysis.
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