Pschopharmacology Flashcards
occurs as the drug is synthesized, released and metabolized & as it acts on the receptor sites of a neurotransmitter system
Primary effects
results from interactions among the neurotransmitters, neuropeptides & hormones as they influence each others functions in the brain
Secondary effects
are the final changes in the clinical symptom induced by a drug such as stabilization of anxiety & depression
Tertiary effects
an enzyme in nerves & tissues that breaks down Norepinephrine, Dopamine & Serotonin (5HT)
Monoamine oxidase
found abundantly thoughout the parasympathetic NS. (Increase salivation,
Excessive sweat, Diarrhea, Bradycardia)
Acetylcholine
Inhibits nerve activity
Amino Acids- Gama Aminobutyric Acid (GABA)
react with beta receptors in the periphery to modulate pain transmission
Peptides- Enkephalins
is important in conceptualizing the pathology & treatment of Alzheimer’s & Parkinson’s disease
Acetylcholine
is important in conceptualizing the pathology & treatment of Schizophrenia
Dopamine
is important in conceptualizing the pathology & treatment of Anxiety
Gamma-aminobutyric Acid (GABA)
is important in conceptualizing the pathology & treatment of mania & depression
Norepinephrine
is important in conceptualizing the pathology & treatment of mania & depression
Serotonin
Nervous System
- Neuron
- Dendrites
- Axon
- Nerve cell
- Pre-synaptic nerve ending
- Synapse
- Postsynaptic receptor
is the study of regulation & stabilization of emotions, behavior, & cognition through the interactions of endogenous signaling substances or chemicals in the brain
Psychopharmacology
3 types of physiological action
- respond to stimuli
- conduct electrical impulse
- release chemicals (neurotransmitters)
fundamental units of brain & nervous system (NS)
Neurons
sending of impulse from one neuron to another across synapse
Neurotransmission
are chemical messenger that transmit signals from neuron
Neurotransmitters
- amino acid which is main inhibitory
- for vision, motor control, regulation of anxiety
GABA
- amino acid which is the most plentiful
- for memory and learning
Glutamate
- a MAOIs- a stress hormone
- for HR, BP, muscle srength
Epinephrine
- a MAOIs- fight-flight response
- for BP, HR, fat breakdown
Norepinephrine
- a MAOIs- feel good neurotransmitter
- for pleasure, motivation, memory, coordination of body movement
Dopamine
- a MAOIs- mood transmitter
- mood regulation & modulation, sleep, anxiety, sexuality, appetite
Serotonin
- a peptide, which responds to pain
- inhibit pain, signal transmission, promote feelings & euphoria
Endorphins/Enkephalins
- associated with motor neurons
- muscle movement, memory learning
Acetylcholine
Antipsychotic Agents (Neuroleptic Drugs)
- Typical Antipsychotics
- Atypical Antipsychotics
Contraindications for Psychotropic Drugs
- Hypersensitivity
- Bone marrow depression
- Brain damage
- CVD
- Glaucoma
- Parkinson’s disease
- Seizure disorder
- Photosensitivity
- Sever depression
- Blood dyscrasias
- Hx of impaired liver function
- HPT
- Diabetes
- Peptic Ulcer
- Pregnacny
Side Effects of Psychotropic Drugs
- Delirium
- Agranulocytosis (Carbamazepine-Clozapine)
- Sedation
- occurs in 1 to 3 weeks
after taking the medication - tremors
- rigidity
- bradykinesia
- NR: Avoid abrupt withdrawal, administer
antiparkinson’s drug - give AMANTADINE- dopamine antagonist
Parkinson’s Syndrome
- abnormal movements; irreversible movement of tongue (protrusion), face, trunk & extremities; drooling, shuffling gait
- NO treatment except discontinue meds
- NA: Vitamin E- believe to improve pt condition
Tardive Dyskinesia
- 1-2 days after, sudden spasm or contractions of face, tongue, extraocular muscles, neck (torticollosis), dx in swallowing
- Remain with the client during his/her frightening symptoms
- Administer antiparkinson drug (Cogentin,
Benadryl, Artane, Akeniton) - Benzotropine mesylate (Cogentin)
- Diponhydramine (Benadryl)
Dystonia
- 2 weeks after treatment. Characterized by motor restlessness & need to keep moving, ‘inability to sit’, pt complains of feeling jittery having a lot of ‘nervous’ energy.
- Administer Antiparkinson drug
- Rule out anxiety or agitation before giving
anticholinergic drugs
Akathisia
occurs in days & weeks after treatment; elevated VS, rigidity, confusion, renal failure, increase creatinine phosphokinase (CPK), increase WBC, coma, death
Neuroleptic Malignant Syndrome (NMS)
- relieves insomnia
- used to induce a state of natural sleep
Hypnotics
- treat daytime tension
- may be used to manage withdrawal symptoms associated with alcoholism, to control convulsion & to produce skeletal, muscle relaxation
Antianxiety (Anxiolytics)
treatment of choice for anxiety, insomnia & stress-related conditions
Benzodiazepines
Librium: 5 to 10 mg TID or QID (for mild) 20 to 25 mg TID or QID PO (for severe)
Chlordiazepoxide