What is the role of posttraumatic amnesia (PTA) in the assessment of traumatic brain injury (TBI) severity?

Updated: Feb 01, 2018
  • Author: Percival H Pangilinan, Jr, MD; Chief Editor: Stephen Kishner, MD, MHA  more...
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Answer

As early as 1932, Russell introduced the concept of posttraumatic amnesia (PTA) and later defined it as the time elapsed from injury to the moment when patients can demonstrate continuous memory of what is happening around them. [5] Lack of accurate records may make this system difficult to use retrospectively. Zafonte found that the duration of PTA (as measured by using the Galveston Orientation and Amnesia Test) appeared to be a significant predictor of functional outcome after a TBI and may best reflect the overall severity of injury. [24, 25]


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