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Related Concept Videos

Estimation of k and VD of Aminoglycosides01:20

Estimation of k and VD of Aminoglycosides

Aminoglycosides are a class of antibiotics used to treat various bacterial infections. Clinicians must determine the elimination rate constant (k) and volume of distribution (VD) to optimize therapeutic efficacy and minimize toxicity. The k value represents the rate at which the drug is removed from the body, and the VD reflects the degree to which the drug distributes into body tissues. Accurately estimating these parameters allows healthcare professionals to tailor drug dosing to individual...
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Gentamicin, an aminoglycoside antibiotic, is commonly administered via intermittent intravenous infusion to treat severe infections. An intermittent one-hour infusion of gentamicin, administered at eight-hour intervals, allows for precise control of plasma drug concentrations, minimizing toxicity while ensuring therapeutic efficacy. Pharmacokinetic principles govern the dynamics of plasma concentrations and can be mathematically described using specific equations.The plasma drug concentration...
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In pediatric medicine, understanding the renal function and drug elimination nuances is crucial for administering safe and effective treatments. Newborns, in particular, display markedly slower renal functions than adults, profoundly affecting how drugs are cleared from their bodies. This slower drug clearance requires clinicians to extend the dosing intervals for many medications to prevent drug accumulation and toxicity while ensuring therapeutic efficacy.One key area where these adjustments...
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Drug elimination from the body primarily occurs through metabolic and excretion pathways. Hepatic metabolism transforms lipophilic drugs into hydrophilic forms for excretion, typically via enzymatic processes classified as phase I (modification) and phase II (conjugation). Renal excretion eliminates drugs and metabolites through filtration and secretion in the kidneys. Impairment in liver or kidney function can hinder these processes, delaying drug clearance and extending the drug’s half-life.

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Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses
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Published on: August 30, 2018

Optimizing aminoglycoside use.

William A Craig1

  • 1Department of Medicine, University of Wisconsin School of Medicine and Public Health, 1685 Highland Avenue, Madison, WI 53705, USA. wac@medicine.wisc.edu

Critical Care Clinics
|December 15, 2010
PubMed
Summary
This summary is machine-generated.

Aminoglycosides are reviewed for treating serious gram-negative infections in critically ill patients. Early combination therapy may reduce mortality in septic shock, optimizing aminoglycoside use.

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Area of Science:

  • Pharmacology
  • Infectious Diseases
  • Critical Care Medicine

Background:

  • Aminoglycoside use has declined due to newer antibiotics but historically aided bacterial killing.
  • Most studies show no benefit of aminoglycoside combinations over monotherapy.
  • Recent findings suggest early combination therapy may reduce septic shock mortality.

Purpose of the Study:

  • To review aminoglycoside pharmacokinetics, pharmacodynamics, and toxicodynamics.
  • To describe dosing strategies for improved outcomes in critically ill patients.
  • To discuss the role of aminoglycosides in serious gram-negative infections.

Main Methods:

  • Literature review of aminoglycoside properties and clinical studies.
  • Analysis of pharmacokinetic, pharmacodynamic, and toxicodynamic data.
  • Evaluation of dosing strategies and impact on patient outcomes.

Main Results:

  • Newer antibiotics have reduced aminoglycoside monotherapy use.
  • Evidence for combination therapy benefits has been historically limited.
  • Early combination therapy shows promise in reducing septic shock mortality.

Conclusions:

  • Optimizing aminoglycoside dosing and combination strategies is crucial for critically ill patients.
  • Further research is needed to clarify the role of aminoglycosides in specific infections.
  • Early intervention with appropriate antibiotic combinations may improve survival in septic shock.