Pediatrics Flashcards
What is the definition of epilepsy?
The occurrence of at least 2 unprovoked seizures (regardless of the type)
What is the definition of seizure?
The clinical manifestation of abnormal hypersynchronous d/c of the cortical neurons
What are the two general classifications of seizures?
Generalized
Partial
What are the 6 types of generalized seizures?
- Absence
- Myoclonic
- Atonic
- Tonic
- Clonic
- Tonic-clonic
What are absence seizures?
Staring episodes with cessation of activity
What are myoclonic seizures?
Brief jerking muscle movements
What are atonic seizures?
Loss of tone for a few seconds (could be whole body or only partial)
What are clonic seizures?
Regularly repeated muscle jerks
What is the difference between a simple and a complex partial seizure?
No alteration of consciousness with simple
What are the five characteristics used to define epilepsy syndromes?
- Seizure type
- Age of onset
- Course
- EEG abnormalities
- Drug of choice
What are the characteristics of childhood absence epilepsy?
Brief staring spells with impairment of awareness and cessation of activity without loss of tone
What is the duration of childhood absence seizures?
Usually less than 20 seconds
What is the frequency of absence seizures?
Multiple times/day
What usually provokes absence seizures?
Hyperventilation
Is there a postictal state with absence seizures?
No
Is there a loss of muscle tone with absence seizures?
No
What age do absence seizures begin?
School aged (4-14 years)
What is the prognosis of absence seizures?
Usually self limited–resolve by age 18 years
What is the most important thing to ask in the history of seizures?
Any h/o developmental abnormalities
What are the EEG findings of absence seizures?
3 Hz spike and slow wave discharges
What is the treatment for absence seizures (3)? Which is the first choice?
- Ethosuximide
- Valproic acid
- Lamotrigine
What gender is usually affected with absence seizures?
Females
Are absence seizures generalized or partial?
Generalized
What is benign childhood epilepsy with centrotemporal spikes (rolandic epilepsy)?
Infrequent, partial seizures that manifest with tingling in the mouth, on the face, drooling, dysphagia, speech arrest
How common are generalized tonic-clonic seizures with benign childhood epilepsy with centrotemporal spikes?
Rare
When do seizures occur with benign childhood epilepsy with centrotemporal spikes?
During sleep or upon waking
What is the prognosis for benign childhood epilepsy with centrotemporal spikes?
Usually resolve with puberty, and has no effect on development
What are the imaging findings of benign childhood epilepsy with centrotemporal spikes?
Normal
What are the drugs of choice to treat benign childhood epilepsy with centrotemporal spikes (2)?
Carbamazepine
Oxcarbazepine
What is the MOA of carbamazepine?
Na channel blocker and GABA receptor agonist
What are the EEG findings of benign childhood epilepsy with centrotemporal spikes?
Centrotemporal spikes
What are the facial s/sx of benign childhood epilepsy with centrotemporal spikes?
- Tingling of the mouth
- Drooling
- Dysphagia
- Speech arrest
What are the UE findings of benign childhood epilepsy with centrotemporal spikes?
Unilateral UE movement
What is the general age range for benign childhood epilepsy with centrotemporal spikes?
2-12 years
True or false: benign childhood epilepsy with centrotemporal spikes usually appears on both hemispheres
False–usually unilateral
What is juvenile myoclonic epilepsy?
Myoclonic jerking seizures that usually happen in the morning, and is without LOC
What is the usual age of onset for juvenile myoclonic epilepsy?
12-18 years
What are the EEG findings of juvenile myoclonic epilepsy?
3-6 Hz polyspikes and waves (many small spike, and then a slow wave in all leads)
How can juvenile myoclonic epilepsy be provoked?
Photic stimulation
Is there LOC with juvenile myoclonic epilepsy?
Usually not
What are the usual triggers of juvenile myoclonic epilepsy? (4)
- AM wakening
- Lack of sleep
- Fatigue
- EtOH
What is the prognosis for juvenile myoclonic epilepsy?
Requires lifelong treatment, but good response to meds, and no developmental issues
What is the treatment for juvenile myoclonic epilepsy? (3) Which is the drug of choice?
- Valproic acid
- Levetiracetam
- Lamotrigine
True or false: Juvenile myoclonic epilepsy is a lifelong disease
True
Does juvenile myoclonic epilepsy usually manifest as a generalized seizure or partial?
Generalized
What are the side effects of valproic acid?
Teratogenic effects
PCOS
Hirsutism
What percent of juvenile myoclonic epilepsy have GTCs? What in particular provokes them?
85%–usually brought about by a lack of sleep
What is a febrile seizure?
Fever of more than 38 C and seizure in the absence of CNS infection
What ages do febrile seizures usually happen?
in children between 3 months and 6 years
What must be r/o with febrile seizures?
Meningitis
True or false: patients with febrile seizures usually have no previous h/o afebrile seizures
True
What is the most common type of seizure in children?
Febrile
True or false: a febrile seizure, by definition, has to occur in the absence of a CNS infection
True
What is a simple febrile seizure?
Generalized seizure of less than 15 minutes duration, that occurs one time in 24 hours
What is a complex febrile seizure?
Foal, more than 15 minutes in duration, or more than one seizure in a 24 hour period
Are febrile seizures found more often in viral or bacterial infections?
Viral
What is the recurrence risk of febrile seizures?
30%
What are the two immunizations that should be given to children who have febrile seizures?
- MMR
- DPT
How do you differentiate between a febrile seizure and a seizure 2/2 meningitis (lab, sign, symptom)?
- LP
- Meningeal signs
- Prolonged postictal state with meningitis
When should an LP be done in the workup of a febrile seizure? (2)
- 6-12 months old if not fully vaccinated for HiB or strep pneumonia
- Taking Abx
Prolonged postictal state with a febrile seizure suggests what? What should be done?
Meningitis
LP
True or false: CBC, CMP, Ca, and Mg should be checked with febrile seizures
False
True or false: brain imaging and/or an EEG should be obtained with febrile seizures
False
When is neuroimaging indicated for a febrile seizure?
- Focal neuro deficits
- Macrocephaly
- S/sx of increase ICP
True or false: and EEG is NOT indicated for a simple febrile seizure
True–but may be indicated in complex febrile seizures
What is the treatment for febrile seizures? When is it indicated?
Benzos–if lasting more than 5 minutes
True or false: prophylactic medications should be given in cases of febrile seizures
False
What is the prognosis for febrile seizures?
Benign
What are the risk factors for the development of febrile seizures? (4)
- h/o complex febrile seizures
- Abnormal neuro exam
- Developmental delay
- Family h/o epilepsy
What is infantile spasm?
-Epileptic spasm that usually starts in infancy.
What is the prognosis for infantile spasms?
Severe problem with developmental delay
What is the usual presentation of infantile spasms?
Sudden flexion of legs, arms, neck and head
Extension rarely
What is the most common type of infantile spasm: flexion, extension, or mixed
Mixed–Flexion of the head and arms, with extension of the legs
Are infantile spasms usually singleton, or multiple?
Clusters
When in the day do infantile spasms usually occur?
Awakening from sleep
What is the prognosis of infantile spasms?
Usually associated with developmental arrest or regression
3 Hz spike and slow wave discharges on EEG = what type of seizure?
Absence seizure
3-6 Hz polyspikes and waves = what type of seizure?
Juvenile Myoclonic Epilepsy
Which type of childhood seizure can be provoked with hyperventilation, and which with photic stimulation?
Absence = hyperventilation
Juvenile Myoclonic epilepsy = photic