Psychopharm Flashcards
(40 cards)
Mechanisms of action for:
1. Beta blocker
2. Traditional antipsychotic
3. Atypical antipsychotic
4. Tricyclic antidepressants
5. MAOIs
6. Newer antidepressants
7. Sedative-hypnotics
- Decrease norepinephrine & epinephrine (blocks receptors)
- Decrease dopamine (blocks receptors)
- Decrease dopamine, serotonin, glutamate (blocks receptors)
- Increase norepinephrine, dopamine, serotonin (blocks reuptake)
- Increase norepinephrine, dopamine, serotonin (inhibits enzyme that breaks them down)
- NDRIs (increase norepinephrine and dopamine), SNRIs (increase serotonin and norepinephrine)
- Increases GABA (mimics GABA): includes barbiturates, alcohol, and anxiolytics (benzodiazepines)
What dx associated with dopamine?
Too little: Depression, Parkinson’s
Too much: Schizophrenia, Tourette’s
What dx associated with serotonin?
Too little: Depression, mania, anxiety, bulimia
Too much: Schizophrenia, anorexia (food restriction decreases serotonin –> relief)
What dx associated with epinephrine?
Too little: Depression
What dx associated with GABA?
“Abnormal levels:” Parkinson’s, epilepsy, sleep dx
Too litte: anxiety, Huntington’s
What dx associated with glutamate?
Too much: TBI, Huntington’s, Alzheimer’s
Alcohol inhibits glutamate
What dx asscoiated with acetylcholine?
Too much: Depression
Too little: dementia, Alzheimer’s
Fx of parietal and temporal lobe
Parietal: Reading and calculation, tactile, senses
Temporal: memory, language, auditory
What part of the brain is the SCN?
Hypothalamus
Structures in hindbrain
medulla, pons, cerebellum
Structures in midbrain
Substantia nigra, RAS
Structures in forebrain
Thalamus, hypothalamus, limbic system, cerebrum
Hippocampus is part of the _____?
Limbic system
Structures in basal gangia
Caudate nucleus, putamen, globus pallidus, substantia nigra
Fx of basal ganglia
Planning, organizing, and coordinating voluntary movement
Basal ganglia pathology linked to these dx
Huntington’s, Parkinson’s, Tourette’s, OCD, ADHD
Parkinson’s: NTs and brain region
Less dopamine (substantia nigra in basal ganglia) –> this leads to less GABA
Huntington’s: NTs and brain region
Less GABA and more glutamate (basal ganglia, esp. caudate, putamen, globus pallidus)
Apraxia & brain region damaged
Less skilled motor movement (parietal dmg)
Anosognosia & brain region damaged
Can’t recognize own neurological sx (parietal dmg)
Gerstmann’s syndrome & brain region damaged
Finger agnosia, L/R confusion, agraphia, acalcula (parietal dmg)
Contralateral neglect & brain region damaged
Neglect of left-side of body and environment (dmg to R parietal)
Tactile agnosia & brain region damaged
Inability to recognize objects by touch (parietal dmg)
Rebound hyperexcitability
After abrupt cessation of benzos; insomnia and other sx that were more intense prior to taking drugs