Epilepsy Flashcards
Epilepsy: focal seizures:
First line is what (Ls)
First line : Lamotrigine or levetiracetam (2Ls)
Second line:
- focal cozzzzz
Carbamazepine, oxcarbazepine and zonisamide (Coz)
Generalised seizures:
(Names) think waterrrr tamat
- Toinic clinic
- Absence(with another type of seizure)
- Myoclonic
- Atonic
- Tonic
Generalised seizures - treatment - WHAT DO WE USE FIRST LINE? THEN??? OR??
We use sodium valoprate as the first line, then lamotrigine or levetiracetam as the second line
For Absence on its own with nothing else what can we give??( E + S)
we would use use Ethosuximide and sodium valoprate
Women - should always take what in terms of treatment if of child bearing age?
Women to always take second line if at child bearing age
MHRA Update- for Sodium valproate??? And topimirate??
Full pack dispensing required for sodium valoprate. Valoprate must not be started in new patients (Male or female) aged 55 or under , unless two specialists independently consider and document that there is no other effective treatment available
- Topimirate is also contraindicated in pregnancies now and women of child bearing age can use unless conditions of pregnancy prevention are fulfilled
- Male patients who may father children should use effective contraception whilst on valoprate and for at least 3 months after valoprate
Status epilepticus is a seizure that will last….
How long?
What do we need to provide? What are the two likelihoods for the plans put in place by th patient
- Seizure lasting longer than 5 mins
- Provide immediate resuscitation and immediate emergency treatment:
1)Patient has an individualised emergency management plan in place that is immediately available
2)Patient doesn’t have an individualised emergency management plan immediately available
Seizures lasting longer than 5 mins:
We give what IV? If resus available vs if in community
- IV lorazepam (if resuscitation facilities are available)
- Buccal midazolam or rectal diazepam(if in community)
Give second dose in seizures if …. How long does it last ?
Or if what fails so we give what? What if second line doesn’t work what are the 2 options?
seizure doesn’t stop within 5-10 mins
- If seizure fails to respond after 2 benzodiazepine doses: - Levetiracetam,phenytoin, sodium valoprate
If seizure fails to respond, try second line - if still not working then give phenobarbital or general anaesthetic
Category 1
Category 1:
Ensure patients are maintained on a specific brand
Carbamazepine,phenobarbital,phenytoin and primodine
Has to be the same brand
Anti-epileptic interactions:
(Carbamazepine? Phenytoin? Sodium valproate?) have a risk of what so interact with drugs that are what toxic? What about being inducers and inhibitors? Which drugs lower seizure threshold? Carbamazepine specifically and phenytoin is a what so interacts with what?
Carbamazepine,phenytoin and sodium valoprate:
Hepatoxicity: Amiodarine,Itraconazole,Macrolides,alcohol
CYP enzyme:inducers(phenytoin,phenobarbital,carbamazepine),inhibitors(sodium valoprate)
Drugs that lower seizure thresholds: Tramadol,theophyllines,quinolones
Carbamazepines: Hyponatraemic drugs(SSRI,Diuretics)
Phenytoin: Anti-folates(methotrexate,trimethoprim)
Anti epileptic side effects:
Carb/phenytoin and valproate can all cause what?
What’s blood dyspraxia??? What doe we give patients complaining of bone pain?
Carbamazepine,phenytoin and sodium valproate
- Depression and suicude
- Hepatotoxic it’s
- Hypersensitivity
- Bloody dyspraxia
Vitamin D deficiency- pt is complaining of bone pain = vit D
Carbamazepine- can cause????
Hyponatraemia and oedema
Phenytoin can cause?
coursing appearance and facial hair
Cyp450 is linked to what?
hepatotoxicty
Hypersensitivity- is caused by which 5 anti epileptics?(NOT valproate!!!!)
Carbamazepine,phenobarbital,phenytoin,primidone,lamotrigine
Skin rash: is caused by? What is the syndrome also known as??
lamotrigine - Stevens Johnson syndrome
Blood Dyscrasia -
Blood Dyscrasia is caused by which anti-epileptics - C.VET PLEZ
carbamazepine,valoprate,ethosuximide,topiramate,phenytoin
Lamotrigine and zonisamide(C.VET PLZ)
Eye disorder: What causes reduced visual fields? What causes a secondary glaucoma??? What causes encephalopathy? What causes resp depression???
Vigabatrin(reduced visual field)topiramate(secondary glaucoma)
Encephalopathy: vigabatrin
Resp depression: Gabapentin,pregablin
CARBAMAZEPINE:
What is the therapeutic range? What are the signs of toxicity?
Therapeutic range 4-12mg/L
Signs of toxicity -
Hyponatraemia
Ataxia
Nystagmus
Drowsiness
Blurred vision
Arrhythmias
GI disturbances
Phenytoin: 10-20 mg.L
Signs of toxicity?
SIGNS
Slurred speech
Nystagmus
Ataxia
Confusion
Hyperglycaemia
Double vision
Epilepsy and Driving- what are the steps taken?
- Driver must stop immediately and inform DVLA - if a fit
- If first unprovoked or single isolated - stop driving for 6 months - if you have another one within -established epilepsy but no impact on consciousness - 1 year fit free o start driving again
- If nothing then its okay continue during
- Med change/withdrawal
- Should not drive for 6 months after last does - meds taken off slowly
Reduced meds and reduction causes a seizure, license gets revoked for a year and then reinstated after 6 months if the treatment resumed and no further seizures occur
Pregnancy- there is a risk of what from convulsions? Which outweigh what? What is given fro neural defects in the first trimester?what vitamin is given at birth to minimise what? Most risky med ? What can topimiarte cause
- Risk of harm to the mother and foetus from convulsion seizures outweighs the risk of continued therapy
- Folic acid given reduces the risk of neural tube defect in the first trimester
- Vitamin K - phitomenadoin injection administered at birth to minimise risk of neonatal haemorrhage
- Most risk: Sodium valproate PPP
- Topiramate - Cleft palate
