Patterns: Normal Neonate Flashcards
Location of most brain tumors in children
Posterior Fossa
conception to birth
Gestational Age
time since birth
Chronological Age
both ages combined
Conceptional age
less than 38 weeks conceptional age
premature
38-40 weeks gestational age
full term
What are the 4 main features of full term neonate EEG?
- low voltage irregular waves
- mixed pattern
- high voltage slow wave patterns
- trace alternant
- 30-34 weeks CA
- occurs in all stages of sleep
- consists of very slow delta bursts
Trace Discontinue
- 35 weeks to 40-44 weeks CA
- occurs in all stages of sleep
- consists of theta-delta activity mixed with fast “spikes” or sharply contoured activities
Trace Alternant
At what age are the 4 stages of sleep identifiable?
6 months
continuous low amplitude theta mixed with delta and some alpha, fast frequency activity can also be seen
Active (REM)
high voltage slow activity or trace alernant pattern
Quiet Sleep
When is BGR usually established in neonates?
3-6 months
BGR will be what around 5 months?
- 5-6 Hz
What is the BGR around 1 year?
5-8 Hz
What is the BGR around 2-5 years?
6-8 Hz
- spindle like fast, brushes, rapid bursts
- common in quiet sleep
- consists of slow wave 0.5 Hz to 1.5 Hz with high amplitude with a superimposed, rhythmic 8 Hz to 22 Hz activity
Delta Brush
-29 to 32 weeks CA
- consists of brief bursts of rhythmic sharply contoured high amplitude 4-7 Hz theta bursts in temporal areas
Temporal Theta Bursts
- “encoches frontales”
- 35 to 45 weeks
- appears more during transition from active to quiet sleep
Frontal Sharp Transients
- normal spike or sharp waves
- mid temporal or central
- typically seen only in sleep when considered normal
Focal Sharp Wave and Spikes
