Evaluation of tests to predict metallo-B-lactamase in cystic fibrosis (CF) and non-(CF) Pseudomonas

Abstract

Double disks synergy test (DDST) and combined disks test (CD) were evaluated to predict the presence of metallo-β-lactamase in 70 Pseudomonas aeruginosa isolates recovered from cystic fibrosis and non-cystic fibrosis patients. DDSTCAZ-EDTA 1 cm and CDIMP-EDTA tests showed the best accuracy (94.3%). Furthermore, for other combinations, accuracy unsatisfactory was obtained.