al Naqeeb aEEG Amplitude Classification
The al Naqeeb amplitude-integrated EEG (aEEG) amplitude classification for neonatal encephalopathy (al Naqeeb and colleagues, Pediatrics 1999).
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Upper margin of the aEEG trace
- 20 microV
- Lower margin of the aEEG trace
- 3 microV
Result: Moderately abnormal amplitude.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Normal
- Upper margin above 10 microV AND lower margin above 5 microV.
- Moderately abnormal
- Upper margin above 10 microV AND lower margin 5 microV or below.
- Suppressed
- Upper margin below 10 microV AND lower margin below 5 microV.
- Not exhaustive
- An upper margin of EXACTLY 10, or an upper below 10 with a lower above 5, falls in NO category.
- Seizures
- A SEPARATE finding, never folded in. Normal amplitude with seizures is not moderately abnormal.
- Not assessed
- Sleep-wake cycling is not part of this classification at all.
- Scope
- Device and montage dependent. NOT a therapeutic hypothermia eligibility criterion.
What you enter
- Upper margin of the aEEG trace.
- Lower margin of the aEEG trace.
- Whether seizure activity was recorded.
Full field descriptions
- Upper margin of the aEEG trace. Compared with 10 microV STRICTLY: exactly 10 falls in no published category.
- Lower margin of the aEEG trace. Compared with 5 microV. Cannot exceed the upper margin.
- Whether seizure activity was recorded. Optional, and reported SEPARATELY: it is never folded into the amplitude category, so a normal amplitude with seizures is not moderately abnormal.
How this is calculated
al Naqeeb N, Edwards AD, Cowan FM, Azzopardi D. Assessment of neonatal encephalopathy by amplitude-integrated electroencephalography. Pediatrics. 1999;103(6 Pt 1):1263-1271. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.