(Clackamas, OR) -- Two EMTs were assaulted at the Kaiser Sunnyside Medical Center on Friday. The Clackamas County Sheriff's Office says 57-year-old Tracy Davidson was visiting a patient and became violent with nursing staff. She hit one EMT with her hand and then hit the person with a bag containing white powder. The EMT started experiencing an overdose and was given several doses of Narcan. The EMT was admitted to the hospital. Davidson left the hospital before deputies arrived. She returned Saturday and was arrested on charges of assault, disorderly conduct, and harassment.