ABSTRACT
Background: Although antimicrobial stewardship programmes are one of the highest priorities in healthcare systems and many articles have been published, few refer to the implementation of antifungal stewardship and highlight specific points on which efforts should be focused. Objective: To assess the percentage of patients with confirmed candidaemia in whom de-escalation was conducted, and the economic impact of step-down or step-up antifungal therapy. Additionally, we attempted to estimate the potential increase in drug minimum inhibitory concentrations or to detect resistant strains of Candida species. Methods: We selected, retrospectively, patients who had received systemic antifungal therapy between 2011 and 2016 for documented candidaemia. Statistical analysis and diagrams were used to assess the results. Results: Of 157 patients with confirmed candidaemia, 58 received azoles, 74 echinocandinsand 18 liposomal amphotericin B for empirical therapy. 51 patients were eligible to step-down to fluconazole but only 23 patients did so. Furthermore, in nine patients unjustified step-up from fluconazole to echinocandins or liposomal amphotericin B was carried out. The additional cost incurred bythe healthcare system due to high prices of echinocandins and liposomal amphotericin B in comparison with fluconazole was211 837. Interestingly, it was found that one strain of C. albicans and two strains of C. glabrata were resistant to echinocandins. Conclusion: The presence of a multidisciplinary team, including an infection control specialist and a clinical pharmacist, would limit the prescription of advanced antifungal agents as empirical therapy. Moreover, this team would control the de-escalation process-where applicable-leading to a reduction in costs and, probably, a decrease in the emergence of resistant Candida species. These facts contribute to the broader discussion on the adoption of antifungal stewardship programmes.
Subject(s)
Antifungal Agents/administration & dosage , Candidemia/drug therapy , Drug Resistance, Fungal/drug effects , Drug Utilization Review/standards , Amphotericin B/administration & dosage , Amphotericin B/adverse effects , Antifungal Agents/adverse effects , Candidemia/epidemiology , Drug Resistance, Fungal/physiology , Drug Utilization Review/methods , Echinocandins/administration & dosage , Echinocandins/adverse effects , Humans , Microbial Sensitivity Tests/methods , Microbial Sensitivity Tests/standards , Retrospective StudiesABSTRACT
The in vitro activity of plazomicin was evaluated against 300 multidrug resistant (MDR) (carbapenemase and/or ESBL-producing) isolates from four hospitals in Athens, an area where carbapenemase-producing organisms are endemic. Most of the isolates were also resistant to the legacy aminoglycosides with the MIC50/MIC90 to tobramycin, amikacin and gentamicin being 32/>32, 32/>32 and 4/>8 µg/ml, respectively. ACHN-490 retained activity (MICs ≤ 4 µg/ml) against all isolates of Klebsiella pneumoniae, Escherichia coli, and Enterobacter spp. tested with MIC50 and MIC90 of 1 and 2 µg/ml, respectively, irrespective of their MDR phenotype and it represents a promising alternative for the treatment of the most problematic Gram-negative pathogens.
