Pharm 18 Flashcards
List MC to least common antidepressants used
SSRIs are MC
SNRIs (2nd MC)
Miscellaneous (2nd MC)
Tricyclic (TCA) (Common but rarely use for depression)
Monoamine oxidase inhibitors (MAO-Is) (Least common d/t MOST ASEs)
Who are the most risk for depression and death of despair?
40-59 yr old white American women.
Time course of therapy (including onset of action of antidepressants) for most patients with depression
Initial :6-12 wks for symptoms remission.
- Medications typical take 4 wks to “kick in”
- 8 wks to determine efficacy
Continuous phase: 4-9 mo after symptom remission
Optional/relapse prevention: 12-36 mos
Long term effects of reuptake inhibitors
Increased synaptic concentrations of 5-HT
Down regulation of presynaptic auto receptors
Increase the firing rate of raphe neurons
Why are SSRIs are usually the preferred first line antidepressant?
They are as effective as TCAs but cause fewer autonomic ASEs and less sedation.
Safer in regards to OD.
Less cardiac arrhythmias and less likely to induce a seizure
ASEs for SSRIs when discontinued rapidly
Dizziness, nausea, fatigue, muscle aches, chills, anxiety, irritability, paresthesia, insomnia, electric shock phenomena.
Common clinical applications for TCA
MDD (unipolar)
Insomnia
Neuropathy
Migraine prevention
Common clinical applications for misc. antidepressants
MDD
Seasonal affective disorder
Smoking cessation (Bupropion)
Cognitive dysfunction w/ depression
Unique applications of Nefazodone
Only indicated for depression
Less rates of sexual dysfunction
May be added with other meds to counteract the sexual dysfunction
Unique applications of Bupropion
Seasonal affective disorder
Smoking cessation
Less risk for sexual dysfunction
Stimulant properties
Add to SSRI: decrease SSRI dose + bupropion
Unique applications of Mirtazapine
“tricyclic antidepressant”
Fewer anticholinergic, sexual dysfunction, CV and GI effects
More sedating and more weight gain= good to use in older pts w/ eating/ weight issues
Unique applications of Trazodone
Insomnia but only FDA approved for depression
ASE: Priapism
Black box warning(s) present on all antidepressant drugs
Antidepressants (under age 24) can increase risk for suicidal thinking and behavior in children, adolescents, and young adults with major depressive disorder and other psychiatric disorders.
Recall the names of the non-selective monoamine oxidase inhibitors used for depression
Phenelzine
Tranylcypromine
Isocarboxazid
Why have MAO-I fallen out of favor for tx of depression?
Cannot use: SSRIs, TCAs, SNRIs, etc. within 14 days of MAO-I
Cannot use: dextromethorphan, pseudoephedrine, tramadol, meperidine, etc.
Ingestion of Tyramine food = hypertensive crisis.