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Implementing Alfred60AST in a clinical lab: Clinical impact on the management of septic patients and financial analysis - 19/04/23

Implémenter le système Alfred60AST dans un laboratoire clinique : impact clinique sur la prise en charge des patients septiques et analyse financière

Doi : 10.1016/j.pharma.2022.11.009 
M. Potvin a, , E. Larranaga Lapique b, M. Hites b, D. Martiny a
a Microbiology Department, LHUB-ULB, rue haute, 322, 1000 Brussels, Belgium 
b Department of Infectious Disease, Erasme Hospital, route de Lennik, 808, 1070 Brussels, Belgium 

Corresponding author.

Highlights

Our study shows a significant decrease in the TAT with the Alfred60AST system compared to a conventional method (13h22 vs. 32h25).
Faster ASTs results improve the therapeutic management of patients affected by enterobacterial sepsis in about 20% of cases.
Our detailed financial study highlighted an important increase in costs mainly due to technical issues and short expiry dates.
Clinical studies are still needed in order to analyse the impact of the rapid method on the mortality rate of sepsis, the length of hospitalisation and the duration of antibiotic therapy.
Our survey shows that Alfred60AST is rather easy-to-use and allows a significant reduction in manual steps.

Il testo completo di questo articolo è disponibile in PDF.

Summary

Introduction

Sepsis is an important cause of morbidity and mortality. An accelerated microbiology diagnosis is crucial in order to reduce the time to initiate targeted antibiotic therapy. The Alfred60AST system is able to provide phenotypic Antimicrobial Susceptibility Testing (AST) results within hours. This study has two objectives: assess the clinical impact of this technology and determine its cost-effectiveness.

Methods

During a ten-week period, all new enterobacterial or enterococcal bloodstream infection was analyzed with the Alfred60AST system, in parallel with routine methods. Its impact on the clinician's therapeutic strategy was studied. In order to assess the financial and practical aspects of the method, an analysis of the extracosts and a survey of the technical staff were conducted.

Results

Fifty-three cases of bacteriemia were included. For the Enterobacteriaceae bacteriemias, a clinical impact was shown in 18.9% of the cases (e.g, treatment modification). The financial analysis highlighted an increase in costs (+38% for Enterobacteriaceae, +50% for Enterococci), compared to the theoretical costs reported by the firm, due to the workflow and the volumes of samples used. Finally, results of the technical staff survey were favorable in terms of ease of use of the system.

Conclusion

In addition to its ease of use, the Alfred60AST system is able to provide an AST in a record time. This study shows a real interest of the technique in the therapeutic management of patients with enterobacterial sepsis. However, its routine implementation requires an increase of the analyzed volumes as well as a 24/7 organization of the laboratory in order to be profitable.

Il testo completo di questo articolo è disponibile in PDF.

Résumé

Introduction

Le sepsis représente une cause important de morbi-mortalité. Accélérer son diagnostic microbiologique est crucial pour réduire le délai d’initiation d’une antibiothérapie ciblée. Le système Alfred60AST fournit des résultats d’antibiogrammes en trois à cinq heures. Cette étude a 2 objectifs: évaluer le impacts clinique et financier de ce système.

Méthodes

Pendant dix semaines, chaque nouvel épisode de bactériémies à Entérobactéries et Entérocoques bénéficie d’une analyse par le système Alfred60AST, en parallèle de nos méthodes de routine. L’impact clinique du système sur l’attitude thérapeutique des cliniciens a été évalué. Pour déterminer l’impact financier du système ainsi que l’impact sur le flux de travail du laboratoire, une analyse des coûts cachés et une enquête auprès du personnel ont été menées.

Résultats

Cinquante-trois épisodes de bactériémies ont été inclus. Une modification de stratégie thérapeutique a été observée dans 18,9 % mais ne concerne que les bactériémies à Entérobactéries. L’analyse financière a démontré une augmentation des coûts initiaux liés à l’analyse (+38 % pour les Entérobactéries ; +50 % pour les Entérocoques) de par notre flux de travail et les volumes d’échantillons traités. Finalement, l’enquête menée auprès du personnel a démontré une facilité d’utilisation du système.

Conclusion

En plus d’être facile d’utilisation, le système Alfred60AST permet d’obtenir des résultats d’antibiogramme en un temps record. Cette étude a démontré un intérêt du système pour la prise en charge thérapeutiques des patients septiques. Par contre, son implémentation en routine requiert une augmentation du volume d’échantillons traités ainsi qu’une organisation du laboratoire 24h/24, 7jours sur 7, de sorte à être financièrement rentable.

Il testo completo di questo articolo è disponibile in PDF.

Keywords : Sepsis, Antimicrobial susceptibility testing, Alfred60AST, Bloodstream infections, Blood cultures, Rapid susceptibility testing

Mots clés : Sepsis, Antibiogramme, Alfred60AST, Bactériémies, Hémocultures, Antibiogramme rapide


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© 2022  Académie Nationale de Pharmacie. Pubblicato da Elsevier Masson SAS. Tutti i diritti riservati.
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Vol 81 - N° 3

P. 466-474 - Maggio 2023 Ritorno al numero
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