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Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses
Published on: August 30, 2018
Antimicrobial therapy for two serious bacterial infections. Enterococcal endocarditis and nosocomial pneumonia
Abstract:
Enterococcal endocarditis and gram-negative bacillary pneumonia are two serious infections that are particularly difficult to treat with currently available antimicrobial agents. Enterococcal endocarditis requires two drugs--a penicillin plus an aminoglycoside--to effect cure. Therapy for highly streptomycin-resistant strains seems to be particularly troublesome. The incidence of relapse and toxic reactions are high even when penicillin and gentamicin are administered for four weeks. New drugs that are less toxic are desperately needed. Nosocomial gram-negative bacillary pneumonia is associated with an extremely high mortality. However, overdiagnosis leads to the overuse of potentially toxic antimicrobial agents. Currently, therapy is usually initiated with a beta-lactam drug and an aminoglycoside, and the incidence of toxic reactions is high. New therapeutic approaches are needed.
Insights
New antimicrobial agents are needed to treat difficult enterococcal endocarditis and gram-negative bacillary pneumonia. Current therapies show high relapse rates, toxicity, and mortality, necessitating novel therapeutic approaches.
Area of Science:
- Infectious Diseases
- Pharmacology
Background:
- Enterococcal endocarditis and gram-negative bacillary pneumonia are severe infections with limited treatment options.
- Current therapies often involve dual drug regimens (penicillin/aminoglycoside or beta-lactam/aminoglycoside) with significant drawbacks.
Purpose of the Study:
- To highlight the challenges in treating enterococcal endocarditis and gram-negative bacillary pneumonia.
- To emphasize the urgent need for novel antimicrobial agents with improved safety and efficacy profiles.
Main Methods:
- This abstract reviews current treatment strategies and their limitations for specific serious infections.
- It identifies key challenges, including drug resistance and toxicity, based on existing clinical data.
Main Results:
- Enterococcal endocarditis treatment requires combination therapy, with high relapse and toxicity rates even with standard regimens.
- Gram-negative bacillary pneumonia exhibits high mortality, compounded by overdiagnosis and toxic treatments.
Conclusions:
- There is a critical need for the development of new antimicrobial drugs.
- Novel therapeutic approaches are essential to reduce toxicity and improve outcomes for these challenging infections.
Related Concept Videos
Pneumonia IV: Management
Bacterial Pneumonia Treatment
For bacterial pneumonia, antibiotics serve as the cornerstone of therapy. Initial treatment often begins with empirical antibiotics, tailored to the anticipated causative organism and adjusted based on culture results. Key antibiotic choices include:
Endocarditis I: Introduction
Endocarditis III: Medical Management
Endocarditis IV: Nursing Management
Acute Pyelonephritis II: Diagnostic Studies and Management
Clinical Significance of Antibiotic Resistance
