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Ross S3 AntiEpileptic Drugs
Daya
46
Pharmacology
Professional
11/11/2009

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Term
Three drugs that can reduce seizure threshold.
Definition
Theopheylline, TSA's, and some Phenothiazines. Thopheylline is a phosphodiesterase inhibitor used to treat asthma.
Term
Three causes BESIDES drugs that can reduce seizure threshold.
Definition
Hyperglycemia, uremia, eclampsia.
Term
What type of seizure begins in both hemispheres? What is this type of seizure's subdivisions?
Definition
Generalized seizures begin in BOTH hemispheres. You can then have Convulsive (Clonic & Tonic Clonic) and Non-convulsive (Petit Mal, Myoclonic, Atonic)
Term
Valproate and Ethosuximide are use for...
Definition
treatment of absence seizures. Recall that these are Non-convulsize Generalized seizures.
Term
What are type of seizures where consciousness is not impaired?
Definition
Simple Partial. Also Myoclonic for the most part and Tonic seizures, which occur while you sleep.
Term
Which area of the brain has seizure activity associated with schizophrenia and depression?
Definition
Temporal lobe
Term
DOC for Status Epilepticus
Definition
Benzos (Benzodiazapine or clonazepam)
Term
You have a 4 year old child who suffers from seizures which occur mostly at night. He has lately been experiencing behavioral problems and is also slowing down in his mental development. The seizures appear to be tonic and myoclonic in nature. What do you suspect he is suffering from?
Definition
Lennox-Gestaut Syndrome (LGS)
Term
Describe the mechanism of GABA inhibition on a neuron.
Definition
When GABA bind to the receptor the Cl channel opens thus hyperpolarizing the neuron. This makes it more difficult to depolarize when a stimulatory signal comes along. This is why anti-seizure drugs either increaes GABA or opens the Cl channel.
Term
Describe the physical properties of the GABA receptor and which drugs bind where. Hint, the next slide is a picture, so don't go nuts here.
Definition
[image]
Term
Name a anti-epileptic drug drug that is structurally related to Imipramine. Why do we care about this?
Definition
Carbamazepine is structurally related to Imipramine a TCA. This is important because TCAs interfere with cardiac conduction, vis-a-vis, Carbamazepine.
Term
Ok Bob, for $800, This anti-epileptic drug is known to be the safest for pregnant woman and is a CP450 inducer.
Definition
Carbamazepine. Sorry...What is Carbamazepine?
Term
Two interesting side-effects of Carbamazepine are
Definition
Diplopia and ataxia. Also short term memory decline. Recall that GABA reduces memory consolidation. AAAND finally, this drug can cause conduction disturbances in the heart.
Term
What are some drugs that can inhibit the metabolism of Carbamazepine?
Definition
erythromycin, verapamil, fluoxetine
Term
The best broad activity anti-epileptic drug available. So if your stuck on a test, this is the anti-epileptic drug you default to.
Definition
Valproate.
Term
Liver damage, fine hand tremor, weight gain and hair loss are all adverse effects of what drug?
Definition
Valproate.
Term
A drug that is highly protein bound and experiences displacement in the presence of salicilates.
Definition
Valproate.
Term
This drug is the only anti-epileptic that is a CP-450 inhibitor. Hint - it is also highly tetrogenic during the first trimester only.
Definition
Valproate.
Term
This drug is a Na channel blocker and thus is also an antiarrithmic drug.
Definition
Phenytoin. Recall that it induces CP450
Term
This drug has many adverse effects including Fetal hydantoin syndrome, gingival hyperplasia, hirsuitism and abnormal Vitamin D and folate metabolism.
Definition
Penytoin. Recall that this drug induces CP-450
Term
This drug is a P450 inducer and is displaced from serum albumin by Vaproate et. al.
Definition
Phenytoin
Term
This drug is as effective as Valproate but is preferential when dealing with younger children in the treatment of absence seizures.
Definition
Ethosuximide.
Term
Blocks T-type Ca-channels in thalamic neurons.
Definition
Ethosuximide
Term
Non-sedative antiepileptic drugs that work by binding to the GABA receptor to prolong Cl- channel opening.
Definition
Phenobarbital and Primidone.
Term
Normally known to produce a slightly sedative effect, 40% of patients actually experience hyperactivity and insomnia when taking these drugs.
Definition
Phenobarbital and Primidone
Term
Phenytoin, Carbamazepine and Phenobarbital and Primidone all have this in common.
Definition
They induce Cytochrome P450 liver enzymes.
Term
This prodrug is converted to Phenobarbital and Phenylethylmalonamide, thus making its effects STRONGER than phenobarbital.
Definition
Primidone. Recall that it can cause osteomalacia.
Term
Benzos such as Diazepam and Clonazepam can build what type of tolerance?
Definition
Patient will develop a tolerance against the anti-epileptic properties of the drug.
Term
BDZ's in epilepsy are...
Definition
Diazepam and Clonazepam.
Term
This drug is an anti-epileptic that is a structural GABA analog but has been recently used in the treatment of neuropathic pain.
Definition
Gabapentine (Neurontin)
Term
This drug is used in partial seizures, increases GABA levels, and blocks the release of EAAs such as glutamate.
Definition
Topiramate
Term
This anti-seizure drug actually makes absence and myoclonic seizures WORSE!
Definition
Vigabatrin
Term
Used as monotherapy for epilepsy AND Tourettes by binding to SV2A receptors on vessicles to impede synaptic nerve conduction.
Definition
Levetiracetam
Term
Out of Phenytoin, Carbamazepine, Phenobarbital and Valproate, which one is a P450 inhibitor?
Definition
Valproate.
Term
Three anti-epileptic drugs that also control bipoloar disorder and other mood disorders.
Definition
Valproate, Gabapentin, Carbamazepine. Very Good and Calm
Term
Seizures due to alcoholism are treated with...
Definition
NOT AEDs!! The Alcohol issue must be solved first.
Term
Two AED's that are tetrogenic.
Definition
Valproate and Phenytoin
Term
A child is born with Vitamin K clotting factor deficiency. A Vitamin K injection is administered immediately. What three drugs could have caused this effect?
Definition
Phenytoin, Phenobarbital, or Primidone.
Term
Are AED's secreted in breast milk?
Definition
Yup. The baby will be lethargic.
Term
Phenobarbital, Carbamazepine, and Phenytoin are all used to treat...
Definition
Grand Mal seizures.
Term
What "Over the Counter" drug can decrease phenytoin efficacy?
Definition
Alcohol
Term
Why would the use a Phenytoin have a tendency to "surprise" a young couple?
Definition
It can decrease oral contraceptive efficacy.
Term
Gabapentin and Lemotragine are both used in the treatment of...
Definition
complex partial seizures.
Term
What type of seizure does NOT impair consciousness?
Definition
Simple partial
Term
Your patient is a very hair woman being treated for seizures. You don't even need to look at the chart to know that she is on...
Definition
Phenytoin
Term
Gingival hyperplasia
Definition
Phenytoin
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