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. Author manuscript; available in PMC: 2021 Feb 5.
Published in final edited form as: Am J Perinatol. 2017 Sep 28;35(3):277–285. doi: 10.1055/s-0037-1607212

Table 1:

aEEG background evolution categories

Category Description
1. Persistently Normal (PN) Continuous background at start and end of tracing
2. Complete Normalization (CN) Not continuous at start of tracing but Improved to continuous background and remained continuous by end of tracing
3. Persistent Mild Abnormality (PMA) Continuous or discontinuous at start and discontinuous at end of tracing
4. Progression to Severe (PTS) Continuous or discontinuous at start but progressed to abnormal background (burst suppression, low voltage, flat, or status epilepticus) at end of tracing
5. Improved Without Normalization (IWN) Abnormal background pattern at start (burst suppression, low voltage, flat, or status epilepticus) that improved at end of tracing but never reached continuous background
6. Persistently Severe (PS) Abnormal background pattern (burst suppression, low voltage, flat, or status epilepticus) at start and end of tracing