CNS flashcards
What makes up the nervous system?
Brain
Spinal Cord
Nerve
What transports messages in the nervous system?
Neurons
What kind of cells support the function of the neurons?
Glial cells
What is anxiety?
A condition associated with tension, apprehension, fear or panic.
What are the four major types of anxiety disorders?
- Generalized anxiety disorder
- Panic disorder
- Obsessive-compulsive disorder
- Post traumatic stress disorder
Treatment of anxiety is done by medications that effect which three neurotransmitters?
GABA
Serotonin
Norepinephrine
What are some symptoms of a panic attack?
Dyspnea Chest pain Dizziness Sweating Hot flashes
What four classes of medications are used to treat anxiety?
Benzodiazepines
Azapirones
Anxiolytics
Antidepressants
How do benzo’s work to reduce anxiety?
Reduce neuronal excitability
What are some side effects of benzo’s
Drowsiness
Impaired reflexes
Muscle relaxation
Dependence
What are some examples of benzo’s used to treat anxiety?
diazepam alprazolam temazepam lorazepam oxazepam
How do azapriones work to decrease anxiety?
They bind to dopamine and serotonin receptors and decrease neuron firing.
What is the most common severe psychiatric disorder?
Clinical depression
Are men or women more likely to have depression?
Women
What are the peak years that people get depression?
35-45
What are the four classes of antidepressants?
SSRI
SNRI
TCA
MAOI
How do SSRIs work?
Block the reuptake of serotonin
What are some common SSRI’s?
Prozac - fluoxetine
Paxil - paroxetine
Zoloft - sertraline
Celexa - citalopram
What two disorders is Prozac/fluoxetine used to treat?
Major depression and OCD
What are some side effects of Prozac/fluoxetine?
Drowsiness
Insomnia
Nausea
Loss of appetite
What three disorders is Paxil/paroxetine indicated for?
Depression
OCD
Panic disorder
What are some side effects of paxil/paroxetine?
Nausea
Headache
Sweating
What is a common SNRI used to treat depression?
Effexor / venlafaxine
How does effexor / venlafaxine work to treat depression?
Blocks the reuptake of both serotonin and norepinephrine.
What are some side effects of Effexor / venlafaxine?
Nausea Somnolence Dry mouth blurred vision headache
What drug class can be used for children with bed wetting problems?
TCA’s
What are some side effects of TCAs?
Sedation
dry mouth
constipation
Urinary retention
What auxiliary label is used for TCAs?
Patients should avoid prolonged sun exposure.
What are some common TCA’s used?
Elavil - amitriptyline
Anafranil - clomipramine
Sinequan - doxepin
What does MAOI stand for?
Monoamine Oxidase Inhibitor
Are MAOIs a first or second line treatment?
Second because their is many interactions with food and other drugs.
What are some foods to be avoided when the patient is taking MAOIs?
Cheese
Pickled fish
Sauerkraut
What are some drugs when the patient is taking MAOIs?
Meperidine
Methyphenidate
Levodopa
Amphetamine
What are some drugs considered to be MAOI’s?
Nardil
Eldepryl
Parnate
What antidepressants do not fall into the 4 categories of antidepressants? (2)
Desyrel - trazadone
Zyban, wellbutrin - bupropion
What drugs cause serious interactions with trazodone?
Xanax - alprazolam
Halcion - triazolam
What are some side effects of bupropion?
Dry mouth
Nausea and vomiting
Seizures
Impotence
What is bipolar disorder?
Cycling mood changes: severe highs (mania) and lows (depression)
What are some symptoms of mania?
Overactive Overtalkative Lots of energy Disorganized thoughts Short attention span Easily distracted
What are some symptoms of depression?
Low mood
Lack of energy
Changes in eating and sleeping
Sadness
What is the most commonly used compound for bipolar?
Lithium compounds
What is the usual dose of lithium?
300mg two-three times a day
What are some common drugs for bipolar?
Tegretol - carbamazepine
Depakene - valproic acid
Depakote - divalproex
What is schizophrenia?
A chronic phsychotic disorder
What are some symptoms of schizophrenia?
Delusions
Hallucinations
Withdrawal
bizarre or regressive behavior
What are some common drugs used to treat schizophrenia?
Zyprexa Clozaril Seroquel Risperdal Haldol
What is epilepsy?
A recurrent seizure disorder characterized by a sudden, excessive, disorderly discharge from cerebral neurons.
How do seizures happen?
A sudden, excessive firing of a small number of neurons
What are some causes of seizures?
Alcohol Epilepsy High fever Toxic substances Infection (meningitis)
What are the two major types of seizure?
Partial
General
What is a partial seizure?
Effects only one hemisphere of the brain
What causes a partial seizure?
Injury to the cerebral cortex
What are the two types of partial seizures?
Simple
Complex
What is the most common type of seizures?
Partial Seizure
What happens during a simple partial seizure?
Stiffening or jerking in one extremity followed by a tingling sensation
Is consciousness lost during simple partial seizures?
No
What happens in a complex partial seizure?
Purposeless behavior
aura immediately before seizure
How long do complex partial seizures last?
up to 20 minutes
What is a generalized seizure?
Involves both hemispheres simultaneously.
What are the four main categories of general seizures?
Grand mal (tonic-clonic seizure)
Petit mal (absence seizure)
Myoclonic (blateral massive epileptic myoclonus)
Atonic or Akinetic (drop attacks)
What happens during a Grand Mal seizure?
Body becomes rigid for a minute or two. The muscle jerks, shallow breathing ad loss of bladder control occurs. After the attack the patient is usually drowsy and confused for some hours.
What are some first line therapies for Grand Mal seizures
Tegretol
Dilantin
Valproic acid
What is a second line therapy used for the treatment of Grand Mal seizures
phenibarbital