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Updated: Jun 2, 2026

Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses
Published on: August 30, 2018
[Daptomycin for the treatment of Gram-positive microorganisms in the critically-ill patient]
Francisco Alvarez-Lerma1, María Pilar Gracia-Arnillas
1Servicio de Medicina Intensiva, Hospital del Mar, Parc Salut Mar, Barcelona, España. Falvarez@hospitaldelmar.cat
Introduction:
Infections caused by multiresistant Gram-positive cocci have increased among critically ill patients admitted to the intensive care unit (ICU). In the last few years, treatment of these infections has changed due to better knowledge of the limitations of glycopeptides and the introduction of novel antimicrobials, such as daptomycin.
Objectives:
To describe the characteristics of daptomycin that justify its administration in critically ill patients and to present data on the use of this antibiotic in patients admitted to Spanish ICUs.
Material And Method:
We reviewed the literature on daptomycin to identify the characteristics that may favor clinical response in critically ill patients. To describe the indications and modalities of use in critically patients, information from the European Cubicin(®) Outcome Registry and Experience (EUCORE) database of Spanish patients admitted to the ICU was employed.
Results:
The following favorable conditions were identified: a) scarce systemic response, maintaining high bactericidal activity, b) scarce impact on renal function, c) no requirement for monitoring of plasma levels, d) scarce selection of resistance, and d) excellent tolerability. To assess indications and the use of this agent in the ICU, 122 patients from the EUCORE database were analyzed. The indications were bacteremias (36.2%), complicated infections of the skin and soft tissues (27.6%), and endocarditis (19%). Prominent pathogens were Staphylococcus aureus (26%), S. epidermidis (25%), and other coagulase-negative staphylococci (12%). In 85.7% of patients, treatment was administered as second-line (rescue treatment). In 65 patients (52%), a dose of 6 mg/kg/day was used, with a mean treatment duration of 10.2 days. Overall clinical efficacy was 73.7%. No adverse effects leading to treatment withdrawal were recorded and no increases in creatine phosphokinase (CPK) levels greater than 10-fold the initial values were observed.
Conclusions:
Daptomycin is a novel therapeutic option to be considered in the treatment of severe infections caused by Gram-positive cocci in critically-ill patients.
Insights
Daptomycin offers a safe and effective treatment for severe Gram-positive cocci infections in intensive care unit (ICU) patients, showing high clinical efficacy with minimal adverse effects.
Area of Science:
- Pharmacology
- Infectious Diseases
- Critical Care Medicine
Context:
- Rising incidence of infections caused by multiresistant Gram-positive cocci in critically ill patients.
- Limitations of traditional glycopeptide treatments necessitate novel antimicrobial agents.
- Daptomycin has emerged as a key therapeutic option.
Purpose:
- To characterize daptomycin's properties supporting its use in critically ill patients.
- To present data on daptomycin utilization in Spanish intensive care units (ICUs).
Summary:
- Daptomycin exhibits high bactericidal activity, minimal renal impact, no need for plasma level monitoring, low resistance selection, and excellent tolerability.
- Analysis of 122 Spanish ICU patients (EUCORE database) revealed primary indications as bacteremias, skin/soft tissue infections, and endocarditis.
- Clinical efficacy reached 73.7% with favorable safety, including no treatment withdrawals due to adverse events.
Impact:
- Daptomycin represents a significant advancement in managing severe Gram-positive cocci infections.
- Provides a valuable alternative for critically ill patients, particularly when conventional therapies fail.
- Supports evidence-based guidelines for antibiotic stewardship in ICUs.
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