Accuracy of First Recorded "Last Known Normal" Times of Stroke Code Patients.

Background: Given the time sensitivity of thrombolytic therapy, the accurate documentation of last known normal (LKN) time is crucial to ensure optimal management of stroke patients. This study investigates whether a difference exists between preliminary LKN times (first responders and emergency department practitioners) and revised LKN times (neurology/stroke practitioners), and what potential impact on emergent management of acute stroke this discrepancy may pose.

Methods: All stroke code patients from UC San Diego hospitals from October 2008 to July 2013 with treatment time data were included and grouped based on the disparity between preliminary LKN time and revised LKN time: preliminary earlier than revised, 2 times equal, and preliminary later than revised.