Seizures Flashcards
GABA and its effects on the brain
- inhibitory neurotransmitter because it blocks, or inhibits certain brain signals and decreases activity in your nervous system. When GABA attaches to a protein in your brain known as a GABA receptor it produces a calming effect/
Increasing the stimulation of GABA receptors (used for absence seizures)
increases activity of GABA receptor, reducing excitability of post synaptic neurons and increasing seizure threshold.
Reduce Na+ influx to neurons (tonic clonic and partial, absence)
desensitize Na+ channels thereby delaying opening of channels and reducing excitability of neurons
Seizures
Disturbance of the brain’s electrical activity that may affect consciousness, motor activity and sensation\
Reduce Ca2+ influx to neurons
calcium is necessary for neural transmission. Succinomides block calcium channels delyaing caclium entry and raising the seizure threshold. indicated primarily for absence seizures
Medication used to treat every kind of seizure except absence?
Phenytoin - reduces Na+ influx to neuron.
- provide seizure suppression without CNS depression.
What to monitor when giving Phenytoin
- has very narrow range between therapeutic dose and toxic dose. clients must be closely monitored for toxicity. if blood test result . 80 do not five.
Four types of generalized onset seizures
- Tonic - clonic (aura)
- absence (non-motor)
- atonic (really brief)
- Myoclonic (motor) - not Loss of consciousness
Partial onset seizures
- simple (aware)
- complex (impaired awareness)
Gabapentin
How does it work? – structurally related to GABA, but does not interact with the receptors themselves. Inhibits calcium channels from opening.
What is it used for? - nerve pain, increases seizure threshold and decrease the incidence of seizure. Prevents chronic pain pathways from forming
Common side effects:
CNS depression, dizziness, drowsiness, dry mouth