Seizures Flashcards
Seizure
Epilepsy
- periods of abnormal electrical discharges in brain that may cause involuntary movement or behavior, or sensory alterations
- chronic disorder characterized by recurrent seziures secondary to CNS disorder
Seizure pathophysiology
- abnormal excessive concurrent electrical discharges from cortical neuronal netowrk of cells
- when multiple neurons become excited, they discharge abnormally
- can be caused by environmental, physical stimuli, CNS infection, ypoxia, and brain trauma
Focal Seizures
- partial seizures
- abnormal electric activity in 1 hemisphere, most often in temporal, frontal, or parietal lobes
Generalized seizures
- electrical activity that begins on both hemisperes simultaneously
- spasm movements are bilateral and symmetric
Febrile seizures
- generalized seizures tha occur during rapid increase of temperature
- associated wth acute illness
- seen between 3 months-5 years
- often a family history is present
- Tonic clonic manifestations less than 15 mins
Risk factors for infants developing epilepsy
- median age 5-6 yrs
- SGA
- neurological syndrome
- brain tumor/infections
- stroke
- cp
- autism
- FH
- drug abuse
Tonic Phase manifestations
- unconsciousness, and continous muscular contraction
- BMR increases, increases demand for oxygen and glucose
- may become pale and cyanotic as result of hypoxia
- hypoglycemic
2 types of seizures
- partial (focal)
- Generalized (tonic clonic)- most common in children
Clonic Phase
-alternating muscular contraction and relaxation
Postictal Period
- following seizure activity
- decreased LOC, sleepy but arousable
Auras
- early warning sign of seizure
- sensory alteration such as odor, taste, or vision
- if feeling aura, pt should get on floor to prevent injury during seizure
Simple Partial Seizures Etiology
-involves activation of only part of one cerebral hemisphere
-Simple Partial Seizures manifestations
- no alteration in consciousness
- muscle movements may be restricted to one area
- may have abnormal sensations or hallucinations
- tachycardia, flushing, hypotension or hypertension
- sense of deja vu or fear or anger
Simple partial seizure therapies
- antieleptic meds
- maintain safety
- assess manifestations and document
- vagal nerve stimulation therapy
Complex partial seizure etiology
-same as simple partial, but usually in temporal lobe