Epilepsy

1. Epilepsy

2. ⅠDefinition Epilepsy is a chronic disease of recurrent paroxysmal abnormal discharges of the brain neurons .It is characterized by transient paroxysmal disorders of cerebral function, such as motor 、sensation 、consciousness、 behavior、 autonomic function and so on .

3. Ⅱ.Classification 1.primary epilepsy(idiopathic epilepsy) 2.secondary epilepsy(symptomatic epilepsy)

4. Ⅲ.Etiology 1.heredity ↘ →recurrent paroxysmal →seizures 2.brain lesions ↗ abnormal discharges

5. Ⅳ.Factors influencing seizures 1.heredity 2.environmental factors (1).age (2).endocrine:menstrual epilepsy pregnancy epilepsy (3).sleep (4).precipitating factors: fatigue; emotional impulse

6. Ⅵ.Clinical features Seizures epilepsy

7. Classification of seizures 1.partial seizures (1)simple partial seizures (2)complex partial seizures (3)secondary generalization of partial seizures 2.generalized seizures 3.unclassified seizures

8. 1.partial seizures (1)simple partial seizures a.partial motor seizures recurrent contractions of partial limbs Jacksonian epilepsy Todd’s paralysis epilepsia partialis continua

9. b.somesthetic seizures or special sensory seizures stabbing sensation; numbness; visual hallucination; auditory hallucination; vertiginous feelings; olfactory hallucination c. Autonomic seizures d. psychic seizures

10. (2).complex partial seizures (psychomotor seizures) Aura ↗ unconsciousness (special sensory or psychic symptoms)→ automatism ↘ amnesia

11. (3)secondary generalized tonic-clonic seizures of partial seizures Simple partial seizure ↘ → generalized complex partial seizure ↗ seizures (aura)

12. 2.generalized seizures (1).absence seizures(petit mal) transient cessation of consciousness (2).generalized tonic- clonic seizures (GTCS)(grand mal) 1)characteristics a.sudden loss of consciousness b.generalized symmetric convulsion

13. 2)phase(5-10 min) a.tonic phase↘ Bp,HR,dilated pupil, pupil (10-20 sec) reactionto light(-)(-), → respiratory cessation, cyanosis, Babinski’s sign(+)(+), deep b.clonic phase ↗ and superficial reflexes(-)(-). (0.5-1 min) c.post-convulsive phase

14. Ⅶ.Diagnosis (1)whether the attacks are epilepsy a.history:mainly b.EEG:80% abnormal EEG: spike wave ;sharp wave; slow waves 24h EEG precipitating methods:overventilation flashing stimulation deprivation of sleep

15. Ⅶ.Diagnosis (2)decide the cause of epilepsy a.idiopathic epilepsy b.symptomatic epilepsy generalized diseases :hypoglycemia hypocalcemia cerebral diseases: CT,MRI,CSF

16. Ⅷ.Differential Diagnosis 1.migraine 2.TIA 3.syncope 4.narcolepsy 5.pseudoepileptic seizures

17. Ⅸ.Treatment 1.etiological therapy 2.drug control of epilepsy general principle (1)If the diagnosis is correct and there is no etiological therapy, the AEDS should be given in time (2)choice of AEDs according to seizure type

18. (3).dose of drugs and side -effects Individual principle begin with small dose→maintenance dose therapeutic drug monitoring(TDM) (4)single drug treatment (5)combined usage of drugs (6)long-term taking medicine principle (7)principle of termination of drugs 3.surgical treatment:intractable epilepsy

19. Status epilepticus ⅠDefinition a seizure lasting over 30 minutes or recurrent persistent seizures without recovery of consciousness and neural function between attacks ,is defined as Status epilepticus

20. Ⅱ.Etiology 1.incorrect cessation of AEDs 2.irregular administration of AEDs 3.precipitating causes: infection ; nervousness; fatigue; pregnancy; drinking

21. Ⅲ.Classification and treatment 1.convulsive generalized status epilepticus 2.unconvulsive generalized status epilepticus 3.simple partial status epilepticus 4.complex partial status epilepticus

22. Treatment 1.symptomatic therapy (1)protection (2)unobstructed airway (3)20% Mannitol 250 ml iv drop (4)antibiotic drugs (5)physical cooling (6)regulation of metabolic disturbance 2.stop attack:first-choice:Diazepam 3.maintenance treatment :luminal