Complexation versus hemodialysis to reduce elevated aminoglycoside serum concentrations

Area of Science:

• Pharmacology
• Nephrology
• Infectious Diseases

Background:

• Elevated aminoglycoside serum concentrations pose risks, including nephrotoxicity.
• Current methods for reducing drug levels, like hemodialysis, can be resource-intensive.

Purpose of the Study:

• To compare the efficacy of hemodialysis versus complexation with ticarcillin or carbenicillin in reducing elevated aminoglycoside serum concentrations.
• To evaluate the safety and cost-effectiveness of complexation as an alternative removal method.

Main Methods:

• A comparative study involving seven patients with acutely elevated aminoglycoside levels.
• Three patients underwent hemodialysis, while four received complexation therapy with ticarcillin or carbenicillin.
• Serum half-life and drug removal were assessed over a 48-hour period.

Main Results:

• Both hemodialysis and complexation significantly reduced aminoglycoside serum half-life.
• Complexation removed approximately 50% more aminoglycoside than hemodialysis over 48 hours.
• Complexation demonstrated comparable efficacy to hemodialysis in lowering excessive drug concentrations.

Conclusions:

• Complexation with ticarcillin is a viable and effective alternative to hemodialysis for managing elevated aminoglycoside levels.
• Complexation offers advantages including rapid initiation, lower cost, and reduced risk of adverse reactions.
• This approach allows for continued infection treatment in patients requiring aminoglycoside cessation due to toxicity.