an 18 m. old baby is admitted to the hospital b/c he is suffering from fever and convulsion
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An 18 m. old baby is admitted to the hospital B/C he is suffering
from fever and convulsion.In the P.H : he was doing well until 4 days of his admission when he had fever, running nose & dry cough. His mother brought him to PHC where the family physician diagnosed him as acute URTI and he prescribed antibiotic, cough syrup and paracetamole. But the fever didn’n subside & in the 4th day he developed convulsion.F.H : his brother developed fever & convulsion when he was 3 y old.
Supervised by: Dr.amaniDone by :Eman Al-otibiDarin Al –radadiDina Al-amamEbtehal Al-yami
DEFINITIONS
Seizures: Are transient disturbances in brain function
manifesting as episodic impairments in consciousness in association with abnormal autonomic activity.
Epilepsy:
Is a group of neurologic conditions , the common and fundamental
characteristic of which is the liability to recurrent, usually
unprovoked epileptic seizures.NB:
A persone with a single or recurrent seizures due to correctable circumstances dose not necessarily have epilepsy
ETIOLOGYEpilepsy:
Idiopathic: 70-80% Secondary:
Cerebral malformation: hydrocephalus
Cerebral damage: congenital infection, asphyxia, intraventricular hge/ischemia
Cerebral tumor. Degenerative disorders: Alzheimer’s disease Neurocutaneous disorders: tuberous sclerosis
SEIZURE OUTCOMESInjury/Death15%
Head contusions/Lacerations (Common)Mortality
1.2% of all seizures3% to 26% in Status Epilepticus
10X higher in adults (Vs..... Children)Highest with hypoxic or ischemic.
RISK FACTORHistory of seizure.Family history.Fever.Stress .Lack of sleep.Missed mealFlashing of light .
CAUSES OF PEDIATRIC SEIZURES
Infants (0-1yr)
CNS infectionMalformation
Drug withdrawal or toxicity
GeneticMetabolic
Hypoxia
Young Children (1-12)
CNS infection Degenerative
disorder Fever
Genetic Trauma
Idiopathic
Non-epileptic: Febrile convulsions
Metabolic: Hypoglycemia
Hypocalcaemia/hypomagnesemia Hypo/hypernatraemia
Inborn error of metabolism Head trauma
Meningitis/encephalitis Poisons/toxins: chemicals, cocaine,
isonized, antidepressant
Classification of Seizures and Epileptic SyndromesPartial SeizuresSimple partial (consciousness not impaired)Complex partial (consciousness impaired)Secondarily generalized seizures
" Jacksonian" seizures
Generalized SeizuresAbsence
Typical
Atypical
TonicClonicTonic-clonicMinor motor
Atonic
Myoclonic
Epileptic SyndromesBenign focal epilepsy (benign rolandic epilepsy, benign centrotemporal epilepsy)Juvenile myoclonic epilepsyInfantile spasms (West syndrome)Lennox-Gastaut syndromeAcquired epileptic aphasia (Landau-Kleffner syndrome)Benign neonatal convulsions
Types of seizures :
TYPES OF PEDIATRIC SEIZURES
“Generalized” Seizure Partial Seizure
TYPES OF PEDIATRIC SEIZURESGeneralized(6-20%) Partial (40-60 %)
Grand Mal (Tonic/Clonic)
Absence Myoclonic
TonicClonicAtonic
Simple Partial•Consciousness not
impairedComplex Partial
•Begins locally•Progresses to
impaired consciousness
TYPES OF PEDIATRIC SEIZURES
Syndromes Infantile spasms(West Syndrome)
Lennox-Gastaut Syndrome Juvenile Myoclonic Epilepsy
Benign focal epilepsy (benign rolandic epilepsy)
PEDIATRIC SEIZURES ARE DIFFERENT
Immature nervous systemCannot sustain organized seizuresPoorly developed connections
Less capable of repetitive high-frequency firing
20 X
Partial SeizuresStart by activation of group of neuron in one part of one hemisphereThree main types
1)Simple partial Seizures. motor, sensory, behavioral, or autonomic)
2)Complex partial seizures.
3)Partial Seizures evolving to generalized. 2nd generalized
SIMPLE PARTIAL SEIZURES:
Consciousness is preserved Simple partial seizures arise from a specific anatomic focus. Clinical symptoms include Motor : Location and direction of spread of the seizure focus determine the clinical symptoms.
Sensory : tingling or parasthesia on the face or lomp , visual , aoditory, olfactory disturbance. Psychic ( behavioral ) : DEJA, JAMIAS.Autonomic abnormalities : sweating or flusing .
Complex partial seizures are similar, but in addition, consciousness is impaired.
Commonly origenated from temporal lope.It is associated with alterned consiousness without the pt. collapsed to the ground . The pt. stop what he is doing & stares blinkly, often macking rhythmic smacking
movment of lips or pickling at their cloth .
Usually arise from temporal lobe.When partial seizures spread to involve
the whole brain and produce a generalized tonic-clonic seizure, they show secondary generalization ("jacksonian" seizures).
Generalized seizer
GENERALIZED SEIZER: It starts by activation of
neurones in large area of both hemisphere.
GENERALIZED SEIZER: It consists of:
1-Generalized--Tonic
--Clonic,- and Tonic-Clonic Seizures (grandmal).
2-Absence Seizures ( petit mal ).3-Myoclonic.
4-Atonic seizure
TONIC-CLONIC SEIZURES (GRANDMAL)
Phases of TCS:Prodromal phase : houres or days before
attack. Aura : specific feeling or occurance of seizure.
e.g olfactory hallusination, epi. Discomfort .
Consciousness and control of posture are lost followed by:Tonic phase :Rapid discharg of motor cortix cell causing tonic contraction of muscle ( stiffness )children do not breath and become cyanosed Upward deviation of the eyes.Pooling of secretion , pupillary dilation ,diaphoresis, hypertension , and
piloerection . Clonic phase :
Less rapid, gradually & slowing of discharge of cortical cells causes alternating contraction and relaxation ( Jerking of limbs). Irregular breathing & cyanosis persists, saliva may accumulate in mouth, tongue bitting and incontinence . Last for 2 – 3 min.
Post-ictal phase :Deep unconsciousness .Flaccid limb & jaw.Loss of corneal reflex.Headache, confusion & malaise.Todd paralysis .Amnesia.
EEG During attack shows :repetitive synchronous bursts of spike activity followed by periodic paraxysmal discharges.
ABSENCE SEIZURES 2 types :Typical absence seizureAtypical absence seizure :
Typical absence seizure :*(Disorder of childhood (Usually begin
between 4 and 6 y Characterized : Brief loss of enviromental awareness
accompanied by eye fluttering or simple automatisms ,such as head bobbing and lip smacking .
The attack lasts for a few second (15-30 sec)
Induced by hyperventilation . TYPICAL EEG >>>> 3 hz. SPIK AND
WIEVES .
MYOCLONIC SEIZURES: It consist of single or multiple myoclonic jerk
involving one part of the body or entire.Not proceded by aura.
Atonic Seizures
-Sudden loss of postural tone, with sagging of the head or falling.
-Rarely loose consciousness.
EPILEPTIC SYNDROMES
Epilepsy : Is a group of neurologic conditions, the common and fundamental characteristic of which is : the liability to recurrent , unprovoked seizures.
EPILEPTIC SYNDROMES
1-Benign focal epilepsy (benign rolandic epilepsy, benign centrotemporal epilepsy)
2-Juvenile myoclonic epilepsy3-Infantile spasms (West syndrome)
4-Lennox-Gastaut syndrome5-Acquired epileptic aphasia (Landau-
Kleffner syndrome)6-Benign neonatal convulsions
Benign focal epilepsy, also known as rolandic epilepsy
-usually begins between ages 5 and 10 years.In the central sulcus.Good prognosis.They are usually focal motor seizures involving the face and arm and tend to occur only during sleep or on awakening in more than half of patients .
Symptoms commonly include abnormal movement or sensation around the face and mouth with drooling and a rhythmic guttural sound .Speech and swallowing are impaired .
A family history of similar seizures is found in 13% of patients.
The disorder is called benign because 1 -seizures usually respond promptly to
anticonvulsant therapy;2 -intellectual outcome and brain imaging
are normal, and epilepsy resolves after puberty. Continued treatment is not needed.EEG : centrotemporal spike
INFANTILE SPASMS (WEST SYNDROME)
INFANTILE SPASMS (WEST SYNDROME)
are brief contractions of the neck, trunk, and arm muscles, followed by a phase of sustained musclecontraction lasting 2 to 10 seconds 3 patterns :
1. Extensor : extension of trunk and extrimities . least common .
2. Flexor : flexion of neck , arm and leg onto the trunk .
3. Mixed : most common . May occur during sleep or waking .
Classified in to : 1-Cryptogenic : unknown cause .
-10-20% . -Good prognosis .
2-Symptomatic : -related to prenatal or perinatal or pos natal causes .-Prognosis 80_90 % mantal retardation , but the nature of
the disease determine the outcomes. Tuberous sclerosis is the most common recognized
cause.
The EEG during the waking state,
hypsarrhythmia ,Treatment of infantile spasms includes adrenocorticotropic hormone, oral corticosteroids ,benzodiazepines ,
and valproic acid
JUVENILE MYOCLONIC EPILEPSY
occurs in adolescence and is an autosomal dominant disorder The patient may have absence, generalized tonic or clonic, and myoclonic seizures .
The hallmark is morning myoclonus occurring predominantly within 90 minutes of awakening .
Seizures usually resolve promptly with therapy with valproic acid, but therapy must be maintained for life .
Benign neonatal convultions Outosomal dominant Generalized clonic seizures occur toward the end of first week of life.
Lennox gastaut syndrome multiple seizure types Poorly response to treatment
Acqured epliptic aphasia (landau-kleffner syndrome )Characterized by the abrupt loss of previously acqured language in young childrin
SummaryseizureAbsent seizure
Characterized :
Brief loss of enviromental awareness accompanied by eye fluttering or simple automatisms ,such as head bobbing and lip smacking .
Induced by hyperventilation. TYPICAL EEG >>>> 3 hz. SPIK AND WIEVES .
Epileptic Syndromesrolandic epilepsy
EEG : centrotemporal spike
Infantile spasms (West syndrome)
are brief contractions of the neck, trunk, and arm muscles, followed by a phase of sustained muscle
The EEG during the waking state,hypsarrhythmia ,
FEBRILE CONVULSIONS Seizures associated with sudden onset of high fever in
absence of other causes of seizures & not due to intracranial infections )should be extra cranial infection).
Viral infection of the URT , roseola infantum , shigellosis (most important 2 infections)´ otitis media are most frequently the causes of Febrile convulsion
Affect 4-6% of children. Commonest seizure in childhood. Genetic predisposition. Strong family history “1st degree relative” Gastroenteritis may cause febrile convulsion especially with
campylobacter Giovanni
TYPES Typical (simple): Occur in 1st 24 h of fever. Age group (6 ms – 6 ys) More than half occur between ages 1
and 2 years (mean age 22 months). Single. No neurological or developmental
abnormality. Negative family history of epilepsy. Generalized tonic clonic. Persist < 15 min.
CONT.…Atypical (complex): Occur after 1st 24 h of fever. Age group (<6 ms & >6 ys) Multiple Focal convulsion . Persist > 15 min. Repeated convulsion for several hours or days
in the febrile illness. Neurodevelopmental abnormality may be
present Positive family history of epilepsy may be
present 4-10% of these cases may develop epilepsy
later .
INVESTIGATION Lumbar puncture should be done at
first time of diagnosis. Glucose level CBC EEG Urine analysis
TREATMENT ABC Left lateral position O2 i.v or rectal diazepam Antipyretic & cold compressor Search for the cause and treat it . We should exclude meningitis and encephalitis before treatment. But in general no need treatment. Prophylaxis: During attack of fever give oral or rectal diazepam
3 times daily.Advise family to keep paracetamol at home.
Phenobarbital not given b\c lead to ADHD except in neonatal convulsion.
PROGNOSIS Good prognosis. Risk of recurrence:
50% first febrile seizure at younger than 1 year of age .
30% first seizure at older than 1 year of age 10% have three or more recurrence . 7% with complex having complicated
febrile seizure.Intellectual achievements are normal.
Simple febrile seizures do not cause brain damage.
Risk of epilepsy development:is 2% if one risk factor present,Presence of more than one risk increase to 10%:
1. +ve family history2. Atypical febrile convulsion3. Neurological abnormalities4. Developmental
abnormalities
DIFFERENTIAL DIAGNOSIS Encephalitis & meningoencephalitis Metabolic:
• Hypoglycemia• Hypocalcaemia/ hypomagnesaemia• Hypo/ hypernatraemia
C.V.A. Toxic: e.g. drugs/ aminophilline Neoplastic: e.g. neuroblastoma
NEONATAL SEIZURESNeonate are at particular risk for the develoment of seizure.
-different from child or adult in that generalized tonic-clonic convulsion not occur in first month of life.
CONT..…Neonatal seizures may be difficult to
recognize clinically . There are seizures and none epileptic
activitiesAutonomic changes (tachycardia,increase
BP ) in seizure .but not in non epileptic.None epileptic movements are
suppressed by gentle restraint and enhanced by sensory stimuli . But not in seizure.
Also in seizure coarse, fast slow clonic movement.but in non epileptic there fine rapid movement.
Clinical characteristics of neonatal seizures
Characteristics Designation
Repetitive,rhythmic contractions of muscle groups of the limbs,face,trunk
1-Focal clonic
2-multifocal clonic
Rigid Posturing of single limbs,asymmetric posturing of the trunk ,sustained eye deviation, cannot provoked by stimulation
3-Focal tonic
Not repetitive or recur at a slow rate , may generalized or focal, may provoked by stimulation
4-Myoclonic
Symmetric posturing of limbs,trunk May flexor, extensor or both and provoked by stimulation
5-Generalized tonic
6-Subtle seizure-:1-Ocular signs:
Random and roving eye movement or nystagmus
2-Orobuccolingual movements:Sucking, chewing, tongue protrusions,excesive salivation
3-Progression movement:Swimming movements of the arms, bicycling or pedaling movements of the legs.Also , there alteration in the respiratory rate including apnea. And change in color.
EEG CLASSIFICATION OF NEONATAL SEIZURESA-Clinical seizures with a consistent
EEG event.clinical seizure occures in relashionship to
seizure activity recorded on EEG (focal clonic , focal tonic, some myoclonic) respond to anticonvulsants
B-Clinical seizures with inconsistent EEG event.
(tonic , subtle , some myoclonic)C-Electrical seizures with absent
clinical seizure.comatosed pts who are not on anticonvulsants
ETIOLOGY OF NEONATAL SEIZURESAge 1-4 days:
-hypoxic-ischemic encephalopathy -drug withdrawal,maternal drug use of
narcotics or barbiturates.-drug toxicity,lidocaine,penicilline.
-intraventricular heamorrhage.-metabolic disorders:
1-hypocalcemia:* perinatal asphyxia *maternal
diapetes* sepsis
*hypo/hyperthyroidism.
2-hypoglycemia3-hypomagnesemia
4-hypo/hypernatremia:*inappropriate antidiuretic hormone
secretion. -inborn error of metabolism
-pyridoxine deficiency.
Age 4-14 days:-infections:
*meningitis, encephalitis-metabolic disorders:
1-hypocalcemia:*diet , milk formula.
2-hypoglycemia:*anterior pituitary hypoplasia
*pancreatic islet cell tumors.
-drug withdrawal-benign neonatal convulsion
-kernicterus , hyperbilirubenemia.
Age 2-8 weeks:-infections:
*hrpes simplex, encephalitis.-head injury:
*subdural haemorrhage , child abuse.-inherited disorder of metabolism.
-malformation of cortical development.*focal cortical dysplasia.
-tuberous sclerosis.-sturge – weber syndrome.
BENIGN FAMILIAL NEONATAL SIEZURE
-Autosomal dominant , begin on 2nd -3rd day of life with a seizure frequency of 10-20/day.Patients are normal between seizures.Which stop in 1-6 months .
Fifth day fits occur (4-6) days in small appearing neonatesSizure are multifocal. Present for less than 24 hours. Prognosis is good.
DIAGNOSTIC EVALUATIONCareful neorologic examinationsFamily history of IEMExamination of retina.(chorioretinitis
seuggsets TORCH ).Inspection of skin (hypopigmented lesions
:tuberus sclerosis)An unusual body odor :inborn error of
metabolism.
Blood ..lower serum Ca associated +birth trauma or a CNS insult in the perinatal period
hypomagmesemia+Hypocalcemia occur in infants of malnourished mothers ( Im magnesium)
Serum ammonia : urea cycle abnormalities (orinthine transcarbamylase ) present with increasing lethargy progression to coma,vomiting.
CSF : infections , blood.
TREATMENT The treatment is specific such as treatment of meningitis or the correction of hypoglycemia,hypocalcemia, hypomagnesemia.Therapy should involve anticonvulsant agent:
Phenobarbital 20to40 mg/kg or 10 to 20mg/kg phynetoin or diazepam.
STATUS EPILEPTICS Neurological emergency which defined as
ongoing seizure activity for greater than 20 min or repetitive seizures without return of consciousness for greater than 30 min.
50% of this group ,status is triggered by fever. 25% have acute brain injury.(meningitis m
encepelitis ,electrolyte disorder). Risk factors:1. Abrupt withdrawl. )Sudden cassation of anti-
convulsant medication.)
2. cerebral haemorrhage.3. CNS inf. Or tumor.
INVESTIGATIONSBlood glucose.Blood calcium and magnesium.CBC.Electrolytes.ABG.CSF analysis.Blood and CSF cultures.EEG: not diagnostic, and it is normal in about
one-third of cases .Transfontanellar ultrasound for hemorrhage.CT scan: to diagnose cerebral malformations and
hemorrhage.
TREATMENT Goal : stop seizures as soon as possible.At onset : ABC & O21: IV line with NS.2: Lorazepam )best chose) ,)0.1 mg/kg ) or diazepam ) 0.2
mg/kg ) over 2 minutes via second IV line.3: Phenytoin 20 mg/kg IV.
4:EEG monitoring unless status ended and patient waking up.
5: Phenobarbital 20mg/kg.
If persist : artificial ventilation. Muscle relaxant.
EVALUATION full Carful History:
Take care about:(onset ,duration ,head injury,
previous attack, medication , neck stiffness , fever , family history , history of neurologic or developmental disorder) Physical examination:
Exclude any suspected cause , vital sign , meningitis test, neurologic & mental status
evaluation
Laboratory investigation : CBC , full blood chemistry , blood or
urine toxicology screening , analysis of CSF , blood ammonia , urine and stool culture
imaging MRI superior to CT in showing brain
pathology, but in emergency department setting ,CT may be desirable because it can be performed rapidly and shows acute intracranial hemorrhage more clearly than MRI
EEG
There is no special examination or tests to diagnose & evaluate seizure & epilepsy
The only way is by exclusion & interpretation of history , physical examination , imaging , laboratory tests , EEG
MANAGEMENT
Education .
Avoid RF.
Correct the underlying cause.
If there is no clear cause for the first seizure, wait before starting anticonvulsant.
Single drug therapy (minimum dose) is used where possible.
Sometimes, two or more anticonvulsants are required.
Most commonly used anticonvulsants: valproate, carbamazepine, lamotrigine.
77
CHOICE OF ANTIEPILEPTIC 1Seizure type Drug of choice Alternatives
Partial simple &Partial complex
CarbamazepinePhenytoinValproate
LamotrigineGabapentinLevetiracetamTopiramateTiagabineOxcarbazepinePhenobarbital
78
CHOICE OF ANTIEPILEPTIC 2Seizure type Drug of choice Alternatives
Generalised tonic clonic
CarbamazepinePhenytoinValproate
LamotrigineTopiramatePhenobarbital
Absence EthosuximideValproate
LamotrigineClonazepam
Atypical absenceAtonic, myoclonic
Valproate Clonazepam
Some side-effects of anticonvulsantsSide effects Drug
Hepatotoxicity nausea & vomiting increased appetite and weight Transient hair loss.
Valproate
Liver dysfunction, Lupus erythematosus syndrome Dizziness, visual disturbance.
Carbamazepine
Rash, behavior disturbance, irritability.N & V Lamotrigine
Nausea and vomiting & abdominal dyscomfort Ethosuximide
drowsiness ,easy bruising or bleeding,irritability, confusion ,hyperactivity
Phenobarbital
Hirsutism, gum hypertrophy, ataxia, Steven.j.S headache, dizziness, nervousness, or sleep problems (insomnia), slurred speech
Phenytoin
Condition mimic seizure:1-breath holding attack2-benign paroxysmal vertigo3- Night terrors4- Syncope 5-peudosizure 6- prolonged QT interval 7- narcolepsy and cataplexy
BREATH HOLDING SPELLS
Occur in some toddler when they are upset . The child cries ,holds his breath and goes blue ,sometimes children briefly loss consciousness but rapidly recover fully.
- Cyanotic spells: predictable and provoked by upsetting and scolding. rare before 6 months and abate by 5 yrs
- Heralded by brief shrill cry followed by forced expiration and apnea ,followed by loss of consciousness & may be a.e repeated generalized clonic jerks, episotonous .
- Pallid spells :painful experiences such as falling & striking the head.the child stops breathing, loses consciousness, become hypotonic may have atonic seizure .in refractory cases oral atropine
● Drug therapy….. is unhelpful
● Attacks ….resolve spontaneously
BENIGN PAROXYSMAL VERTIGO
ToddlersSudden + ataxiaHorizontal nystygmus Consciousness not disturbedRotational sensation
NIGHT TERRORS
5- 7 ysMidnight and 2 A.MDilated pupil ,
tachycardia ,Tachypnea ,sweating ,hyperventilation
1/3 +somnambulism ( walking at night )Diazepam (short course)
PSUDOSEIZURES 10-18 yrs ,girls Past Hx of epilepsy Seizures are bizarre, no loss of
sphinctors A neurotic personality
SUMMARY
REFERENCE Nelson essential of pediatrics Nelson text book of pediatrics
Illustrated text book of pediatrics
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