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Page 1: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends
Page 2: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Paroxysmal disorders:Abrupt onset of a clinical episode that Abrupt onset of a clinical episode that tends to be stereotypedtends to be stereotyped and repetitive , and repetitive , lasts seconds or minutes (rarely hours ), lasts seconds or minutes (rarely hours ),

and ends abruptlyand ends abruptly.. Definition of seizure:

transient and abruptly disturbance of transient and abruptly disturbance of cerebral function(cerebral function(impaired consciousness, impaired consciousness, abnormal abnormal motor activity, sensory motor activity, sensory disturbances or autonomic dysfunction) disturbances or autonomic dysfunction) caused by excessive or over synchronized caused by excessive or over synchronized cerebral neuronal dischargescerebral neuronal discharges..

Page 3: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Differential diagnosis of Paroxysmal disorders:

• Seizures

• Migraine

• TIA

• Syncope

• Breath holding spells

• Paroxysmal Vertigo

• hypoglycemia

• Tics• Pseudo seizures• Night terrors• Narcolepsy• Paroxysmal

torticollis• Paroxysmal

dystonia

Page 4: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Seizures ocurr in 10% of children.Less than one third of seizures in children are caused by epilepsy.

• Epilepsy is the occurrence of two or more unprovoked seizures at an interval > 24 hours

• Provokeing factors : fever ,infection, syncope, hypoxia, toxins, head trauma, stress,fatigue, cardiac arrhythmias

Page 5: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Epileptic syndromes classification

• Age of onset• Etiology• Seizure type• Cognitive

development• Neurologic

exam ,CT• prognosis

• Janz syndrom• West syndrom• Lennox-Gastaut syn.• BPEC• LKS• Benign neonatal

convulsion

Page 6: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Clinical Seizure classification

Partial (Only a portionof the brain)

- Simple(Normal consciousness)- Complex

(Impaired consciousness)

Generalized(Both hemispheres areinvolved)

Page 7: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Type of Seizure

Page 8: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Classification

• Partial (Focal Seizures) : 40-60 % of epilepsy of childhood

• Simple partial– Simple with motor signs– Simple with sensory signs– Autonomic: abdominal epilepsy– Psychic :déjà vu,fear,…

• Complex partial : psychomotor seizures or temporal lobe epilepsy or limbic

Page 9: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends
Page 10: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Classification

• Generalized Seizures

– Absence Seizures (Petit mal)

– Tonic/Clonic (Grand mal)

– Atonic Seizures (Drop attacks)

– Myoclonic Seizures

– Clonic

– tonic

Page 11: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Simple Partial seizures :• The most common form : motor activity• SPS arise from a anatomic specific focus.

Location and direction of spread of the seizure focus determine clinical symptomology.

• Spread of partial seizure to the whole brain produced GTCS. (secondry generalization ).

• Only pshycic or autonomic symptoms can be difficult to diagnosis.

Page 12: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

SPS : 10 -20 sec

• Uncinate seizure :) مياني ) ل تمپورا نامطبوع بوي احساس• Gelastic seizure : spells of uncontrolled laugher

hypothalamic tumors• Versive seizure : سمت يك به چشم و سر انحراف• lip smacking : anterior temporal lobe• Macropsia , Micropsia, vertigo: posterior temporal

lobe• Autonomic :fever ,tachycardia ,shivering and

increased GI motility• Limbic seizure :dream like state and bizarre psychic

abnormalities

Page 13: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

CPS• Aura:in one third (epigastric discomfort, in one third (epigastric discomfort,

vague unpleasant feeling , fea vague unpleasant feeling , fearr))

• Automatisms: in 50-75 % in 50-75 % in infant :alimentary , in child:behavioral in infant :alimentary , in child:behavioral

• EEG: Spike or sharp in anterior temporal Spike or sharp in anterior temporal

• Neuroimaging: abnormal in 50-80% abnormal in 50-80% tumor, AVM, MTS, cortical tumor, AVM, MTS, cortical dysplasia,focal atrophy, gliosis, dysplasia,focal atrophy, gliosis, infarctioninfarction

• There may be a brief blank stare or a sudden cessation or pause in activity.

Page 14: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends
Page 15: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Goals of epilepsy treatment Indication for start of AEDs

Control of seizures

Minimal adverse events

Good patient compliance

AEDs suppress but do not cure seizures 80% of patients have control of seizures

60% seizure free, 20% drastically reducing

with treatment

Main aim is monotherapy

Significant improvement in only 10 % of

patients with second drug

Page 16: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Choosing AEDs : Seizure type & Epileptic syndrome

Pharmacokinetic profile

Medical history , interactions/potential for future problems

Efficacy

Expected adverse effects

Cost

Start at low dosage , gradually increase until seizure control or side effect threshold

Never abruptly stop medications

Page 17: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Principles of antiepileptic drugs treatment Pharmacokinetics : What the body does to drug

( absorption , distribution, metabolism, elimination )

Pharmacodynamics : What the drug does to body

( study of biochemical and physiologic effects of drug)

Toxicology

When a total daily dose is increased , sufficient

time (about 5 t 1/2) should be allowed for the

serum drug level to reach a new steady-state level

Withdrawal may be considered after

seizure- free period of 2-3 or more years.

Relapse rate after withdrawn AEDS : 20 -40 %

Page 18: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Treatment of generalized Seizures GTCS: First choice : valproate Second : CBZ , PHT , TPM , LMC , Pb CLZ , PRM , Zonisamide Absence :First choice :Valproate , ethoxysuximide , LMCSecond choice : TPM, Levetiracetam , ZoniMyoclonic : First : Valproate Second : LMC , CLZ, Levetiracetam , Zoni

Carbamazepine may exacerbate absence and myoclonic seizures

Page 19: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Partial Onset Seizures First-line drugs are carbamazepine and phenytoin.

PHT rarely used as first-line agent in children because of toxicity.

Carbamazepine : an acceptable first drug

Gabapentine is another option

Adjunctive (add-on) therapy :

oxacarbamazepine , LMC, TPM, VPA , Pb, PRM , felbamate,

levetiracetam , tiagabine, zonisamide

WHO recommends Pb as choice treatment of partial & TCG

seizures in countries with restricted resources .

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Treatment of partial seizure• Carbamazepine : drowsiness, dizziness,

diplopia ,SIADH (hyponatremia ) ,aplastic anemia , agranulocytosis

• Phenytoin : gingival hyperplasia , hirsutism ,rickets , SLE, ataxia, coarse face, nystagmus, psudolymphoma, Stevens – Johnson syndrome

Page 21: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends
Page 22: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Benign focal epilepsy or rolandic epilepsy or

BPEC :• Age of onset : 5-10 years • 16% of all afebrile seizure in <15 years• 50-75 % occur during sleep(20 % only one

seizure)• Somatosensory aura around the face and

mouth and then focal motor (face and then ipsilateral exterimity ) ,and finialy secondry generalized.

• Good prognosis and normal CT,IQ,N.E• EEG :spike in centrotemporal• Treat: CBZ in frequent seizures for 2 yr

Page 23: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Landau-Kleffner syndrome or Acquired Epileptic Aphasia:

• Onset age :early childhood (4-7 yr)• Cortical auditory deficit and language

disability • Seizure in 80% (partial and generalized)• EEG :highly epileptiform during sleep• CT or MRI :normal • Prognosis :not good• Treat :Nav, clobazam, steroid ,IVIG

Page 24: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Rasmussen encephalitis:chronic , progressive focal inflammation of the chronic , progressive focal inflammation of the

brain of unknown originbrain of unknown origin • Usual age of onset :6-10 yr• Nonspevific viral disease focal persistent

motor activity (epilepsia partialis continiua ) hemiplegia and cognitive deterioriation.

• EEG:focal spike and slow wave activity• Imaging :initially normal and then show atrophy in

the involved area• Prognosis :progressive and lethal• Hemispherectomy for seizure eradication and

prevention of cognitive deterioration but with permanent hemiparesis

Page 25: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Absence seizures• In 6-20% of epileptic children• No aura, no postictal,no loss of tone• Age: 4-6 yr NE & imaging :normal• A brief loss of enviroment awareness and starig or

eye fluttering or simple automatism such as head bobbing &lip smacking

• EEG: 3cps spike and wave• Seizures provoked by HV & flashing light• 40-50% have generalized seizures(60%before

absence & 40% after the onset of absence.• Treatment : Ethosuximide ,valproate

clonazepam as alternative

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Differentiating of absence from CPS• 1.The automatism of CPS are more

complicated (repetitive swallowing, picking of the hands or walking in nonpurposeful circles

• 2.postictal confusion in CPS• 3. Absence provoked by hyperventilation• 4.CPS last few minutes ,absence :few sec• 5.absence :dozens per day but patients with

CPS rarely have more than one or two seizures in day

• EEG

Page 27: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Often referred as behavior problem,Often referred as behavior problem,Poor school marks; disruptive behaviorPoor school marks; disruptive behavior

Side effects of drugs:• Valproate :pancreatitis, drowsiness, tremor ,

alopecia, weight gain, fatal liver failure (Reye-like syndrome ) in <2yr

• Ethosuximide : nausea ,lethargy, hiccups ,SLE, Stevens – Johnson syndrome ; blood dyscrasia

• Clonazepam :ataxia, lethargy, blood dyscrasia ,depression, salivation

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Myoclonus:a lightning-like jerk of part of the body

• Epileptic: EEG shows epileptiform discharges during the jerk.

• Nonepileptic :may originate in the B.G ,BS, or spinal cord.

• Benign: sleep myoclonus• Serious pathology• Underlying illness produce myoclonic epilepsy:

- developmental or static - progressive

Page 29: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Juvenile myoclonic epilepsy or Janz syndrom :

• Onset age : 12-16 yr (adolesenct )• AD ( chromosome 6)• Myoclonus in the morning with or without

generalized clonic and absence seizure .• N.E is normal. • EEG : 4-6 / SWD• Treat : valproic acid for lifelong

Page 30: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Infantile spasms or west syndrome: • Age : 3-8 month , 86 % onset of seizures : < 1yr• Forms : mix , flexor , extensor • spasms occur in drowsiness state.• Repeated clusters occur each day.• EEG : hypsarrhythmia ( HVSW, spikes, polyspike and

disorganized background)• Poor prognosis• Classification : cryptogenic (40% ) Classification : cryptogenic (40% ) • symptomatic :TS is the most commonsymptomatic :TS is the most common• 40 % of cryptogenic have a good intellectual.• Very Poor intellectual prognosis in symptomatic • Treat : ACTH , cortone ( irritability , swelling ,hypertension , Treat : ACTH , cortone ( irritability , swelling ,hypertension ,

glycosuria, severe infection ) benzodiazepines , valproate glycosuria, severe infection ) benzodiazepines , valproate

Page 31: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Etiologies of infantile spasms • Methabolic : PKU,

MSUD, biotinidase deficiency ,NKH, hypoglycemia , B6 dependency, lipidosis,…

• CNS dysgenesia : polymicrogyria, lissencephaly, Down syndrome,…

• Neurocutaneous : tuberous scerosis,….

• Congenital infections : toxo, CMV, syphilis

• Encephalopathies: postasphyxia posttraumatic posthemorragic postinfections postimmunization )pertusis (

Page 32: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends
Page 33: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Etiology of seizuresPerinatal conditions : CNS

malformation, hemorrhage, HIE, congenital infection, trauma

Metabolic conditions: hypoglycemia,hypocalcemia,B6 deficiency hypomagnesemia, hypo or hypernatremia , storage disease, degenerative , Reye syndrome

Poisoning :

lead , cocaine, cyanide , co, pesticide, strychnine

drugs :

،آنتي دپرسانت ،آنتي آمينوفيلين ، ناركوتيك ، ليتيوم كولينرژيك،فنوتيازين

،ايزونيازيد ساليسيالت ، آمفتامين

Page 34: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Etiology of seizuresNeurocutaneous syndromes :

Tuberous sclerosis , NF,… Systemic disorders : vasculitis ( CNS or systemic ) SLE

hypertensive encephalopathy

renal failure hepatic encephalopathy

Infection: مغزي آبسه ، مننژيت انسفاليت، Other : trauma , tumor, idiopathic , familial Over-the-counter drugs, illicit substances herbal

preparations, can precipitate seizure

Page 35: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Laboratory evaluation of seizures

• CBC• Glucose,

ca,mg,p• Na,K,Bun,Cr• Toxicology• CSF• EEG• Imaging• metabolic

Neuroimaging :Neuroimaging :Neonatal seizureFocal seizure focal EEGFocal neurologic finding Neurodevelopmental delayDysmorphic face

Page 36: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Breath holding spells

• In 5 % of children, rare in <6mo and >5-8 yr, 80% <18mo all in <3yr,

• Cyanotic BHS :crying,prolonged expiratory apnea,cyanosis,UWG,tonic-clonic movement treat: reassurance, piracetam, ferrous

• Pallid BHS: painful stimuli,asystole, pallor, bradycardia, opisthotonos ,seizure treat: atropine , less benign than cyanotic

Page 37: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Fever and seizure:• 1. CNS infection • 2. Epilepsy triggered by fever• 3. Febrile seizure F.C occur in 2- 4 % of children. AD (choromosome 19 & 8) 50 % in 1-2 yr , 93% in < 3 yr URI, roseola, AOM are the most common causes of

F.C.Recurrent F.C :

first FC in <1yr 50 % first FC in >1yr 28 %

10 % of children have 3 or more recurrence

Page 38: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Febrile Seizures• Fever of over 38.5C (even 37.8)• Age range of 6 mo to 7 yr• No infection of the CNS or electrolyte abnormality• No previous non-febrile seizure or neonatal seizure• Simple:

– Generalized– Less than 15 minutes– One in 24h

• Complex:– Focal– Over 15 minutes– More than one in 24h– Focal neurologic sign in postictal state

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Risk factors of recurrence of FC

• Positive family history of FC

• FC in < 1 yr• Seizure with

T< 40 degree • Seizure with

fever <1 hour• Complex FC

prophylaxis of recurrent FC:

Oral diazepam at the onset of each febrile illness

Prolong anticonvulsant : pb or Nav

Page 40: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Risk of epilepsy in FC Abnormal neurologic examination or

development Positive family history of epilepsy Complex FC FC in < 1 yr Recurrent FC Seizure with T< 40 degree

prophylaxis : Prolong anticonvulsant : pb or Nav

Page 41: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Meningitis AND FC

فاكتورهاي ريسكمننژيت احتمال

در. 1 ساعت 48ويزيتگذشته

به. 2 بدوورود در تشنجاورژانس

فوكال. 3 تشنجغير. 4 عصبي معاينه

طبيعي

نجام ا نديكاسيون LPا

زير. 1 در تب با تشنجسال يك

لتارژي. 2 وجودپرسيستانت

تب. 3 تشنج اولينكمپلكس

قبال. 4 كه ايي بچه درو گرفته بيوتيك آنتي

نباشد پيگيري .امكان

Page 42: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Routine laboratory testing in epileptic patients Routine laboratory testing is not cost effective or

necessary with the exception of felbamate, which is associated with a relatively high risk of aplastic anemia and requires close laboratory monitoring.

Vomiting (symptom of hepatotoxicity or pancreatitis), prolonged unexplained fever, easy bruising, extreme fatigue or lethargy, flu-like symptoms, worsening of seizures, change in mental status, and abdominal pain should lead to further investigations

Many idiosyncratic reactions of AEDs (Stevens- Johnson syndrome, TEN, serum sickness , pancreatitis) are not predicted by presymptomatic blood test abnormalities

Patients taking AEDs should be monitored for emergence or worsening of suicidal ideation or depression.

Page 43: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Adverse effects of new AEDs AEDSerious Adverse EventsNonserious Adverse

Events

GabapentinNoneWeight gain, peripheral edema, behavioral changes*

LamotrigineRash, including Stevens Johnson and toxic epidermal necrolysis (increased risk for children, also more common with concomitant valproate use and reduced with slow titration); hypersensitivity reactions, including risk of hepatic and renal failure, DIC, and arthritis

Tics* and insomnia

Page 44: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

AEDSerious Adverse EventsNonserious Adverse Events

LevetiracetamNoneIrritability

behavior change

OxcarbazepineHyponatremia (more common in elderly), rash

None

TiagabineStupor or spike wave stuporWeakness

TopiramateNephrolithiasis, open angle glaucoma, hypohidrosis (predominantly children)

Metabolic acidosis, weight loss, language

dysfunction

ZonisamideRash, renal calculi, hypohidrosis (predominantly

children)

Irritability, photosensitivity,

weight loss

Page 45: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Status epilepticus Definition :as a seizure that lasts for 30 minutes

or longer or is repeated frequently so as consciousness not regained between seizures

Seizure lasting more than five minutes has a high risk of lasting 30 minutes and treatment delay is associated with delayed treatment response.

In 1.3 to 16% of epileptic patients. Mortality: 2.7 - 20 percent

Page 46: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

SE occurs in 1.3 to 16% of epileptic patients

Mortality: 2.7 - 20 percent

Incidence rates, causes, and prognosis vary substantially by age

Most in the first year of life

Febrile SE is the most common etiology

60 % of children are neurologically healthy prior to the first episode of SE.

Page 47: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

.What the common complications of status

epilepticus ?• Reduction of CPP• Hyper/hypotension• Dysrhythmeia, CHF, Apnea, Aspiration• Non cardiogenic pulmonary edema,

Rhabdomyolysis,• Hypo/hyperglycemia

Page 48: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Status epilepticus classification Clinical Simple partial

Complex partial

Generalized convulsive

Generalized non-convulsive

Etiologic

• Symptomatic ( acute or remote)

• Idiopathic

• Reactive : Prolong FC

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Subtypes of status epilepticus• Symptomatic :

- acute brain injury : ( 25 % of children ) CNS infections , electrolyte disorder, acute anoxia - congenital malformation or previous brain injury ( in 10 % of children ) -other : hypoglycemia , hypocalcemia, poisoning,Reye ,lead, frontal tumor,…

• Prolonged FC: most common cause in <3yr • Idiopathic : sudden cessation of AED

Page 50: Paroxysmal disorders: Abrupt onset of a clinical episode that tends to be stereotyped and repetitive, lasts seconds or minutes (rarely hours ), and ends

Pathophysiology : excessive excitatory neurotransmitters : glutamate , aspartate , acetylcholineIneffectiveness of inhibition : GABANeuronal loss with every episode, particularly if prolonged

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Complication: Hypoxemia and acidosis Hyperglycemia & hypoglycemia Hyper tension & hypotension IICP and cerebral herniation Hyperpyrexia Hyperkalemia Myoglobinuria Non cardiogenic pulmonary edema Leukocytosis(60%) CSF pleocytosis(13%)

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Risk Factors • Partial seizures with clustering

• Focal background EEG abnormalities

• Secondary generalized Partial seizures

• Generalized abnormalities on neuroimaging

• Younger age of epilepsy (1 year or less) at onset

• Symptomatic etiology of epilepsy

• Occurrence of SE as the first seizure

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Management Assess respiratory & circulatory status &

maintenance of an adequate airway and o2 therapy , cardiac & BP monitoring, pulse oximetry

A rapid history & neurologic exam: to determine classification & etiology

Establishment of IV line and obtain blood samples : CBC, glucose , Ca ,P , Mg , Cr, ABG, LFT, Na, K .

Toxic and metabolic screens ,AED level, blood culture,…in some patients

Correction of metabolic abnormalities: hypoglycemia

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Management Neuroimaging: after stabilization of patient , especially in a patient with focal neurologic signs EEG for background activity evaluation : as soon as possible after the seizure stops, ideally in 1-2 hour If the patient has not regained a relatively

normal mental state within a few hours after SE has stopped, an EEG should be performed to evaluate the possibility of subclinical seizures.

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Drugs:• Oral or IM medication (Pb, Pht, VPA ,

OXCBZ , Levetiracetam) : in partial seizures or brief generalized motor seizures have stopped before the child arrives in the emergency department, which are short in duration, or the child is conscious despite multiple seizures.

• If IV access is delayed or impossible, many AEDs can be given by alternative routes : interosseous , IM, rectal , intranasal

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Missed medication 

Paradoxical effects 

Nonprescription medications : over-the-counter drugs , illicit substances, herbal preparations

Some AEDs commonly used to treat SE may worsen seizures caused by illicit drugs .

In SE is induced by cocaine, other local anesthetics, theophyliine , lindane treatment with benzodiazepines is recommended ( not phenytoin )

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Drugs:Benzodiazepines:Diazepam : 0.3mg/kg, 2mg/min, Max :10mg duration of anticonvulsant effect <20 minutes first choice in outside of emergency department is not considered first-line therapy for SE(less efficacy and

more respiratory depression) Lorazepam : Effective duration of action : 4-6 hours IV-rectal , 0.5 - 2 mg/min , Max: 4mg <12 yr : 0.1 mg/kg >12yr : 0.05 mg/kg Midazolam : IV, IM, rectal , nasal ,oral 0.15-0.2mg/kg

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Antiepileptic DrugsPhenytoin: IV,15-30 mg/kg each time 10mg/kg , 1mg/kg/min

or

Fosphenytoin (IV-IM,15-20 mg/kg , 3mg/kg/min) with monitoring of HR and BP and avoiding of venous extravasations

Side effects :

hypotension ,arrhythmias, local pain and injury, venous thrombosis and purple glove syndrome (edema, discoloration ,and pain in distal extremity to the site of infusion)

Phenobarbital : IV-IM-SC, 15-20mg/kg , 2mg/kg/min

Side effects : sedation, respiratory depression

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IV Lidocaine: (1 - 2 mg/kg ,once or twice) is one of the second-line drugs in SE treatment with favorable properties of prompt responses, less alteration of consciousness and respiratory depression

Valproic acid : 20-40 mg/kg IV(diluted 1:1 with normal saline or DW 5% ) over 5 to 10 minutes can be used as a second or third-line treatment.

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Refractory status epilepticus

is defined as ongoing seizures despite the use of two first-line drugs, usually a benzodiazepine plus either phenytoin or phenobarbital, or which continues for > 60-90 minutes in spite of adequate treatment

Admit in P-ICU treatment of cerebral edema

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Drugs in refractory SE• Pentobarbital : 5-15 mg/kg stat , and 0.5-5 mg/kg/h in

stable hemodynamic Side effects: hypotension , pulmonary edema, ileus,

delayed neurologic recovery• Midazolam:0/15-0/2mg/kg stat, 1-5 µg/ kg /min• Propofol:1-3mg/kg stat, 2-10mg/kg/h , should not be used

in children on the ketogenic diet Adverse effects:

bradycardia , apnea, hypotension , hypertriglyceridemia , acidosis , rhabdomyolysis

• IV valproic acid : 15-20mg/kg in 1-5 min, 5mg/kg/h• lidocaine drip• Paraldehyde• General anesthesia • Topiramate

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Neonatal seizures• 1.subtle :the most common forms

apnea, eye deviation ,tongue thrusting, eye blinking,staring,bicycling,fluctuation of vital sign, sialorrhea,pedaling movements

• 2.Focal or generalized tonic :sustained posturing of limbs or trunk

• 3.focal or multifocal clonic: repetitive,rhythmic contraction of muscles of limbs,face, or trunk

• 4. Focal or generalized myoclonic: arrhythmic contraction of muscles of limbs, face, or trunk

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Etiology of neonatal seizures• HIE :the most common

cause in full term, occur 12- 24 hours after birth asphyxia

• Hypoglycemia• Hypocalcemia• Hypomagnesemia• Hypo or hypernatremia• Congenital brain

malformation• IVH :between 1 and 3

days of age in preterm

• Vit B6 dependency• Injection of local

anesthetic agents into fetal scalp (transient bradycardia,fixed mydriasis) in lab. room

• Sepsis:after 5 days• Drug withdrawal• IEM :lethargy,acidosis,

FH of infant death• SAH: sudden onset on

days1-3,short duration ,do not recur

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Benign idiopathic neonatal seizure or fifth day fits

• In 5 % of fullterm neonate

• Seizure in 4- 6 days

• Multifocal clonic seizure

• Duration of seizures : 24 hours

• Prognosis : good

• Mental development : normal

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Benign familial neonatal seizure

• AD , choromosom 20

• Generalized clonic seizures occurring toward the end of first week of life (2-3 )

• 10- 20 times in a day

• Outlook : favorable

• Seizures stop in 6 months of age.

• Response to treat is variable.

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Differentiate of seizure from jitteriness or tremulousness:

• Jit are sensory dependent, elicited by stimuli,interrupted by holding the limb

• Jit is fine &rapid, seizure is coarse,fast and slow clonic activity

• Abnormal eye movement in seizure

• Autonomic abnormality ( increased in BP or PR ) in seizure

• Jit ocurr in crying or examining jit : IDM, after asphyxia,infants with narcotic withdrawal

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Treatment of neonatal seizure• Treat of specific cause:

Hypoglycemia Hypocalcemia, Hypomagnesemia, hypo or hypernatremia and B6 deficiency

• In the absence of an indentifiable cause ,pb 20 – 40 mg/Kg and then dilantin 10 -20 mg/Kg od diazepam 0.1- 0.2 mg/Kg followed by one of the two longer- acting drugs

• Prognosis : dependent to underlying cause

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Imitators of epilepsy : Nonepileptic paroxysmal disorders

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Paroxysmal disorders Abrupt onset of a clinical episode that tends to be stereotyped and repetitive , lasts seconds or minutes (rarely hours) , and ends abruptly 25 % of patients referred to epilepsy clinic don't have epilepsy & recognition is important: to avoid unnecessary treatmentto avoid unnecessary treatment to institute the correct treatment when requiredto institute the correct treatment when required

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کننده کمک سواالت گريه نظير خاصي شرايط بدنبال حمالت اين هميشه آيا

، کردنگيرد؟ ... می صورت و خواب ، غذاخوردن ، ورزش ، سرفه

می مختل حمالت اين بروز زمان در کودک هوشياری آياو شود

؟ آورد می ياد به کامال را آن طفل اينکه يا می ،تغيير حمالت اين حين در کودک رنگ آيا

می کند؟ حرکت خاصی جهت در چشمها آيا؟ ساير کنند از بيش بدن از قسمت کدام

شود؟ می درگير ها از قسمت تواند می کودک، آيا؟ کند جلوگيری حاالت اين می بروز والدين آيا

؟ کنند سازی شبيه پزشک، نزد را حمالت اين آيا تواننددارد؟ وجود خانواده در حمالت اين از مثبت فاميلی سابقه

حاالت بروز زمان شده گرفته فيلم مشاهده

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Nonepileptic paroxysmal eventsNeonate :

Apnea

Jitteriness

Sleep myoclonus

Hyperkplexia

Infants :

Syncope (BHS ,…)

Benign myoclonus of infancy

Shuddering attacks

Sandifer syndrome

Paroxysmal torticollis of infancy

Extrapyamidal drug reaction

Benign paroxysmal vertigo

Spasmus nutans

Opsoclonus-myoclonus

Masturbation

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Nonepileptic paroxysmal eventsChildren

BHS

Vasovagal syncope

Migraine

Tic disorders

Staring spells

Sleep disorders

BPV

Masturbation

Movement disorder

Adolescents and young adults

Vasovagal syncope

Migraine

Daydreaming

Sleep disorders

Paroxysmal dyskinesia

Tic disorders

Hemifacial spasm

Stiff person syndrome

Pseudoseizures

Episodic rage

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In neonate Apneic seizure : if is accompanied by abnormal eye

movement, mouth movement , in BP or HR Jitteriness :

elicited by stimuli, interrupted by holding the limb

Jit is fine &rapid, seizure is coarse, fast and slow clonic activity

Abnormal eye movement in seizure

Autonomic abnormality in seizure

Jit occur in crying or examining

Severe jitteriness :

IDM, HIE, narcotic withdrawal, hypocalcemia,

hypoglycemia

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Benign neonatal sleep myoclonus  Bilateral, symmetric myoclonic jerks of the arms

and/or legs, during non-REM sleep in the first few weeks of life and resolve by 2-3months

Absence of autonomic disturbances

EEG , neurologic exam & development : normal

Sleep myoclonus will cease when the baby is aroused

Neonates with severe cerebral dysfunction can also have myoclonic jerks, but these typically occur with a stimulus, or upon wakening or falling asleep

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SyncopeAn abrupt loss of consciousness due to sudden in

cerebral perfusion ( brief tonic contraction in muscles of face , trunk, extremities in 50 % or UWG )

Causes : vasovagal (painful procedures, blood drawing warm setting),cardiac arrhythmia, HV & panic attack , Reflex syncope (micturition or cough, carotid sinus hypersensitivity)

Predisposing situation , accompanying pallor, nausa , perspiration , prodromal lightheadedness and visual changes, lack of postictal state , short duration

EEG : transient slowing in attack , CPK in seizure

Tilt table testing can provoke vasovagal syncope

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Breath-holding spells  In 5 % of children, rare in <6mo and >5-8 yr

80% <18mo , all in <3yr

Iron deficiency is more prevalent in BHS

A positive FH is present in 20-35%

An autosomal dominant trait in some families

The two clinical types of BHS:

Cyanotic

Pallid

Family members and individual children can demonstrate both types, usually one predominates

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Cyanotic BHS Crying, prolonged expiratory apnea, cyanosis, UWG,

followed by limpness and loss of consciousness

Decorticate or decerebrate posture in prolong BHS

A few children have generalized tonic or clonic seizures , prolonged postictal unconsciousness

15 -25 % have multiple episodes daily ,most children have one to six spells per week

Treat : reassurance

Ferrous sulphate :5-6 mg/kg/ day

Piracetam, a GABA-derivative

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Pallid BHS It is less common than the cyanotic variety

The event is caused by cardiac bradycardia

Occur after a minor fall or blow to the head or upper body, then child stops breathing and becomes pale, diaphoretic, and limp

May followed by opisthotonos, incontinence & low amplitude clonus , confusion or sleepy for several minutes afterward.

Treat: in severe attacks with prolonged, severe bradycardia or asystole, atropine and cardiac pacing

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Benign myoclonus of infancy 

Known as benign nonepileptic infantile spasms

Clusters of spasms at mealtime at 3-8 months

Clusters increase in intensity and severity over weeks or months and then remit spontaneously at two to three years of age

EEG, neurologic exam , development : normal

An anticonvulsant is not indicated

Without subsequent epilepsy

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Masturbation In girls ( 2 mo – 3 yr ) , in boredom or stress

Episodes of tonic posturing with copulatory movements without manual stimulation of genitalia

Suddenly flushed & perspires , may grunt & breathe irregularly without loss of consciousness

Persists for a few minutes ( rarely hours )

Search for evidence of sexual abuse or abnormality of perineum

Subside by 3 yr of age

No specific therapy is required

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Sandifer syndrome  Intermittent paroxysmal spells of generalized

stiffening & opisthotonic posturing with feedings (within 30 minutes following a meal) in infants due to gastroesophageal reflux

These spells may be associated with apnea, staring, and minimal jerking of the extremities

Can be seen in normal children or children with hypotonia and tracheomalacia

Treatment of GER reduces the frequency and severity of attacks.

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Benign paroxysmal torticollis in infancy Periodically, head tilts to one side, with the face

rotated toward the opposite side with pallor , agitation & vomiting , begin and end suddenly, with a duration between a few hours and a few days. The child is alert and responsive during an attack.

Episodes usually first occur in the first 3 months of life and resolving by the age of 3 years

EEG, neurologic exam , development : normal,

A FH of migraines is common , may develop migraine later in life

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Benign paroxysmal vertigo (BPV)  In toddlers ,sudden attacks of ataxia, ± nystagmus,

diaphoresis, nausea, and vomiting , without altered consciousness, the child appears frightened and pale

Episodes : <1minute,clusters: daily for several days

then remitting for several weeks & recurring again

Usually resolves by 3-5yr, may develop migraine several years later

BPV remains a diagnosis of exclusion.

Treat in clusters of attacks : Diphenhydramine 5mg/kg/day PO, IM ,IV, rectal

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Shuddering attacks Brief episodes a rapid tremor of the head, shoulder, and

trunk as "shiver" from a chill in 4-6 mo

Episodes last a few seconds, can occur multiple times a day (100 times ) and occur with feeding ,or when child is excited or distressed

They never occur during sleep and virtually never when being held and cuddled

EEG ,Neurologic exam , development: normal

FH of benign essential tremor exists

The spells spontaneously resolve by the second decade without treatment

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Nonepileptic staring spells  or pseudoabsences In MR, ADHD, autism & in normal children

Spells in boredom or inactive (watching TV or sitting in a class)

Staring interrupted by tactile or vocal stimulation (but usually not hand-waving )

HV in young children :blow out imaginary candles

In HV , Video-EEG show generalized HVSW in the healthy child, but no epileptiform activity. An inexperienced electroencephalographer may confuse this striking slow activity, "build-up" with the paroxysmal activity of an absence seizure.

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Dystonia  An abnormal posture due to sustained

contraction of both the agonist and antagonist muscle groups

A dystonic posture may be generalized or focal: examples include opisthotonic posturing, torticollis, oculogyric crisis , facial spasm

A common etiology of dystonia in infants is an acute reaction to drugs such as : metoclopramide ,phenothiazines , haloperidol

In infants : generalized

In children: face and trunk

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