(Chapter 14 Antiepileptic Drugs) Flashcards
Anticonvulsant
A substance or procedure that prevents or reduces the severity of epileptic or other convulsive seizures
Antiepileptic drug (AED)
A substance that prevents of reduces the severity of epilepsy and different types of epileptic seizures, not just convulsive seizures
- Therapy is usually lifelong
- Prevent generation and spread of excessive electrical discharge from abnormally functioning nerve cells
- Common medications include carbamazipine, valium, ativan, phenobarbital
- Adverse effects vary per drug, for example dizziness, nausea, vomiting, lethargy, and headache
- Dilantin is the only drugs given IV and is only given with normal saline
Autoinduction
A metabolic process that occurs when a drug increases its own metabolism over time, leading to lower than expected drug concentrations
Convulsion
A type of seizure involving excessive stimulation of neurons in the brain and characterized by the spasmodic contraction of voluntary muscles
Epilepsy
General term for any of a group of neurological disorders characterized by recurrent episodes of convulsive seizures, sensory disturbances, abnormal behavior, loss of consciousness, or any combination of these
- No apparent cause for more than 50% of epilepsy causes
Narrow therapeutic index (NTI) drugs
Drugs that are characterized by a narrow difference between their therapeutic and toxic dosages
Primary or idiopathic epilepsy
Epilepsy that develops without an apparent cause. More then 50% of cases of epilepsy are of unknown origin
Secondary epilepsy
Epilepsy that has a distinct cause (example trauma)
Seizure
Excessive stimulation of neurons in the brain leading to a sudden burst of abnormal neuron activity that results in temporary changes in brain function
- This does not necessarily mean you have epilepsy
- Seizures look different (different kinds) and these are all treated in differently
Status epilepticus
A common seizure disorder characterized by general tonic-clonic convulsions that occur in succession
- A medical emergency that is treated with phenobarbital (barbiturates). Usually lasts 5-10 minutes
Tonic-clonic seizure
Formally called grand mal seizure, this type pf epilepsy is characterized by a series of generalized movements of tonic (stiffening) and clonic (rapid synchronized jerking) muscular contractions
Unclassified seizures
Seizures that are not described by any of the seizure classifications