Antidepressants and Anxiety drugs (Ch 35+38) Flashcards
Adverse effects to SSRIs
CNS: Headache, nervousness, insomnia, fatigue
GI: Nausea
Other:
* Sexual dysfunction
* weight gain
What happend when you increase the dosage for Benzodiazepines?
-anxiolytic
-sedation
-hypnotic (promote sleep)
-stupor (near-unconsciousness or insensibility)
What are the indications of use for SSRIs? (When are they prescribed)
They are prescribed for:
-Major depressive disorder
-Bipolar affective disorder (not alone)
Also:
-Eating disorders
-OCD
-Panic attacks
-Myoclonus
What are the major advantages and disadvantages to Buspirone?
1.) No abuse potential
2.) Does not intensify the effects of CNS depressants
(5-HT1 agonist
non-sedating and non-habit-forming)
Major disadvantage is that effects develop slowly and can take a week to appear, and several more weeks must pass before responses peak
Ex of a benzodiazepines?
Lorazepam (Ativan)
How long does it take to see effects from SSRIs?
May take from 2-6 weeks to have effects
What drugs are a second choice drug for anxiety?
Benzodiazepines (BZDs)
What is the way a patients emotional state is conveyed that relates more to other perception of the patients emotional state, responsiveness?
Affect
What reuptakes do TCAs block?
Blockade of NE reuptake
Blockade of 5-HT reuptake
TCA overdoses can be?
Can be lethal
When administering TCAs what existing disorders must we bear in mind?
Caution in patients with existing disorders:
Cardiac Dysrhythmias
Anticholinergic effect
Slows conduction in Bundle of His
*Seizures (excessive excitability of brain neurons)
Mechanism of action for benzodiazepines?
-GABA reduces excitability of neurones
-Benzodiazepines enhances effect of GABA
-Decreased neuronal excitability
*Depress CNS activity
What are the most common adverse effects to TCAs?
-Sedation
-Anticholinergic effects (blurred vision, dry mouth, constipation, urinary retention, tachycardia)
-Orthostatic hypotension (most serious of the common adverse effects)
*Most dangerous is Cardiac toxicity
SSRI and SNRI are not more effective then?
They have fewer?
and few?
No more effective than older TCAs and MAOIs
Fewer adverse effects than
TCAs eg anticholinergic action
MAOIs eg ‘cheese reaction’
Few drug-drug or drug-food interactions
What is anxiety?
unpleasant emotional state
What class of antidepressants does sertraline belong to?
SSRIs
What reuptake do SSRIs not block?
Do not block reuptake of dopamine or norepinephrine
What agent is used for GAD and take weeks before effects are felt?
Buspirone
What do selective serotonin reuptake inhibitors block the reuptake of?
Selectively inhibit 5-HT reuptake
-They selectively block neural reuptake of serotonin
What agents are the second or third choice for use as an antidepressant?
Monoamine Oxidase Inhibitors (MAOIs)
Ex of a TCA
Amitriptyline
Others end in “Pramine “
Food to avoid while on MAOIs?
Avoid foods that contain tyramine!
Aged, mature cheeses (cheddar, Blue, Swiss)
What classes of drugs are the first choice for antidepressants? What the second? Why?
-First choice is SSRI’s and SNRI’s
-Second choice are TCA’s and MOI’s because they have more adverse effects and are generally less well tolerated then that first one treatments and are generally reserved for those have more responses to the first-line drugs
MAOIs: Adverse Effects
*Orthostatic hypotension most common
dizziness/light-headedness
tachycardia
CNS stimulation
Insomnia, anxiety
What are the 3 main emotional and mental health disorders?
1.) Anxiety
2.) Mood (affective) disorders
3.) Psychoses
What are the Client care implications for patients on antidepressants?
Inform clients that it may take 2 to 4 weeks to see therapeutic effects
Monitor clients closely during this time, assess for suicidal tendencies, and provide support
Sedation often occurs with tricyclic therapy
notify physician if this lasts more than 2 weeks