Clinical impact of matrix-assisted laser desorption ionization time-of-flight mass spectrometry for the management of inpatient pneumonia without additional antimicrobial stewardship support.

We assessed whether implementation of matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) mass spectrometry without antimicrobial stewardship support would impact antimicrobial utilization and clinical outcomes in inpatient pneumonia. Implementation significantly reduced time to organism identification and time to optimal therapy but did not have a detectable impact on clinical outcomes.