Difference between revisions of "GPD (Generalized periodic discharges)"
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Revision as of 16:08, 16 May 2017
- Any pattern of generalized synchronous, repetitive discharges of similar morphology
- Relative symmetric
- Periodic, so with interdischarge interval recurring at nearly regular intervals.
- A pattern can qualify as periodic as long as it continues for at least 6 cycles
- Frontal- or occipital-dominant.
- If a more ictal appearance it can be categorized as GPD+:
- +F: superimposed fast activity.
- +R: superimposed rhythmic or quasi-rhythmic activity.
- +FR: superimposed fast activity and rhythmic or quasi-rhythmic activity.
- Not to be confused with intermittent rhythmic delta activity (IRDA)
- Not to be confused with lateralized of bilateral independent periodic discharges:
GPD’s in a 85 years old male after a out of hospital cardiac arrest (source), the discharges are symmetric, similar morphology with the same interdischarge intervals