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Time Last Known Well -Symptom Onset

What is the difference between Time Last Known Well and time of symptom onset?

Any examples are for illustrative purposes only.

The time last known well is the time the patient was last known to be without the signs and symptoms of the current stroke or at his or her prior baseline. When the onset of symptoms is clearly witnessed, then the time last known well is identical to the time of symptom onset. Under other circumstances, these terms are not synonymous.
Manual: Advanced DSC - Comprehensive Stroke
Chapter: Performance Measurement DSPM
First published date: April 11, 2016 This Standards FAQ was first published on this date.
This page was last updated on November 01, 2021
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