Preliminary readings of antimicrobial susceptibility panels: A simple, fast and inexpensive way to detect bacterial resistance and enhance antibiotic treatment of bloodstream infections Sánchez Yebra, Waldo Obelleiro Campos, Alexandre Xabier Del Gigia Aguirre, Laura Cabezas Fernández, Teresa Sánchez Gómez, Juan De Lamo Sevilla, Cristina Gutiérrez Fernández, José Rodríguez Maresca, Manuel Increasing incidence of resistant bacteria needs faster identification (ID) and antibiotic susceptibility testing (AST) in order to improve antimicrobial treatment of severe infections. We propose a preliminary reading of the AST MicroScan® panels coupled with mass spectrometry ID. A total of 157 bacterial clinical isolates were processed for routine ID and AST (in 22 cases, ID and AST were performed directly from positive blood culture bottles). For gram-negatives, data from the initial and final readings were recorded and compared [89.9% category agreement (CA), 6.9% very major errors (VME)]. In adition all the 32 ESBL producers were detected at 5.3-8.6 hours. For Staphylococcus aureus, all the 16 MRSA isolates were detected at 4.5 to 7.5 hours. Thus, we find our preliminary readings approach as a simple, inexpensive and reliable way to detect and identify the most prevalent resistant bacteria in our institution on the same day that ID/AST is performed. 2024-05-09T11:33:21Z 2024-05-09T11:33:21Z 2019-08 journal article W. Sánchez Yebra et al. Preliminary readings of antimicrobial susceptibility panels: A simple, fast and inexpensive way to detect bacterial resistance and enhance antibiotic treatment of bloodstream infections. Diagnostic Microbiology and Infectious Disease 94 (2019) 398–402. https://doi.org/10.1016/j.diagmicrobio.2019.03.001 https://hdl.handle.net/10481/91593 10.1016/j.diagmicrobio.2019.03.001 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional Elsevier