View source for LPD (lateralized periodic discharges)

Synonyme: PLED (Periodic lateralized epileptiform discharges)

*'''L'''ateralized: so unilateral
*'''P'''eriodic: Relative constant interval between the discharges, which varies between 0.5 and 3 seconds (most often around 1 second)
*'''D'''ischarge: Could be [[Delta waves]] or sharp waves with a “epileptiform” morphology


* If a more ictal appearance it can be categorized as LPD+:<ref>ACNS STANDARDIZED ICU EEG NOMENCLATURE v. 2012</ref>
**'''+F''': superimposed fast activity. 
**'''+R''': superimposed rhythmic or quasi-rhythmic activity. 
**'''+FR''': superimposed fast activity and rhythmic or quasi-rhythmic activity.


*LPD’s are seen in acute cerebral laesion
** Non specific:
***Acute cerebrovascular events
***Encephalitis
***Subdural hematoma
***Other structural lesions
* Tend to disappear in weeks 
* Higher risk of seizures in patients with LPD’s


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''''' LPD's left parieto occipital in a male of 78 years old with a hemmorrhage left occipital (average)'''''
[[File:LPD%27s_left_parieto_occipital_male_78_yo_with_a_hemmorrhage_left_occipital_(average).png|border|1200px]]
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'''Notes'''
<references/>