Febrile Seizures Recurrence; Simple versus Complex - USMLE Forums
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  #1  
Old 06-19-2012
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Kids Febrile Seizures Recurrence; Simple versus Complex

Quote:
complex febrile seizure is diagnosed if the seizure is focal, lasts greater than 15 minutes, or if the total duration of seizure activity lasts longer than 30 minutes. Children with complex febrile seizures are at an increased risk for febrile or afebrile seizures in the future, especially if there is a family history of epilepsy in a parent or sibling.
this is excerpt from uworld.

they have grouped febrile seizure into simple and complex. and complex means increased risk of recurrence of febrile seizure.

Is this info correct then?
simple febrile seizure DONT have recurrence risk and complex have.
so in exam q...what is risk of recurrence of febrile seizure? do we have to look if patient has simple or complex seizure to answer?
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Old 09-19-2012
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What is the risk of recurrence in first and second year
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Old 09-19-2012
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Complex per se they mean to say atypical. So in stead of concept of complex better search for the atypical febrile features. Atypical febrile has more likelihood to develop future seizure whereas typical febrile not at all.
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Old 09-20-2012
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Simple febrile ssizure also do recure. but not as common as complex febrile seizures..


Ref Nelson Chapter 586

Febrile seizures recur in approximately 30% of those experiencing a first episode, in 50% after 2 or more episodes, and in 50% of infants <1 yr old at febrile seizure onset.
Several factors affect recurrence risk (Table 586-5). Although about 15% of children with epilepsy have had febrile seizures, only 2-7% of children who experience febrile seizures proceed to develop epilepsy later in life. There are several predictors of epilepsy after febrile seizures (Table 586-6).

Table 586-5 -- RISK FACTORS FOR RECURRENCE OF FEBRILE SEIZURES
MAJOR
Age <1 yr
Duration of fever <24 hr
Fever 38-39C
MINOR
Family history of febrile seizures
Family history of epilepsy
Complex febrile seizure
Day care
Male gender
Lower serum sodium
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Old 09-24-2012
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Thank you very much
Plz keep contact with me
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Old 09-24-2012
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Idea! Separating the two issues

I think you guys are mixing between two things here;

Number one:
Recurrence of febrile seizures, see the risk factors mentioned in gyrus post. But even recurrent febrile seizures does not mean there's risk of future epilepsy.

Number two:
What are the chances that if a child has febrile seizure will go on to develop future afebrile seizures and epilepsy. The answer to this question is that if the febrile seizure complex (atypical) then the risk is higher.

Do not need to know the exact numbers just know the relative significances of the above facts.

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