Trends in antimicrobial susceptibility patterns in King Fahad Medical City, Riyadh, Saudi Arabia.

To describe and interpret local antibiograms from a single tertiary care center to monitor the trends of antimicrobial resistance (AMR) patterns and establish baseline data for further surveillance. Methods: We performed a retrospective descriptive review of antibiograms data between January 2010 and December 2015 from King Fahad Medical City, Riyadh, Kingdom of Saudi Arabia. Results: A total of 51,491 isolates were identified, and most were gram-negative (76.