Antidepressants & Mood stabilizers (Segars) Flashcards
other 'antidepressant indications: Nicotine withdrawal=\_\_\_ Enuresis=\_\_ Diabetic peripheral neuropathy, fibromyalgia, and chronic MSK pain=\_\_\_ stress incontinence=\_\_\_ **BIG STAR**
Bupropion - nicotine w/drawal
Imipramine - enuresis
Duloxetine - diabetic neuropathy…
Duloxetine - stress incontinence
Amitriptyline, Clomipramine, doxepin, and imipramine are __
TCAs –> 3 amines
amoxapine, desipramine, nortriptyline are __
TCAs –> 2 amines
All TCAs, desvenlafaxine, duloxetine, venlafaxine, and levomilnacipran are ___
SNRIs
Citalopram, escitalopram, fluoxetine, paroxetine, sertraline, vilazodone, vortioxetine are __
SSRIs
Amoxapine is a __
SNRI + DA
Bupropion is a __
NDRI
Mirtazapine, nefazadone, and trazodone are __
SARA
isocarboxazid, phenelzine, selegiline, and tranylcypromine are __
MAOIs
fluvoxamine is a __
SSRI only for OCD/SAD
Side effect with BIG STAR of SSRI’s? other SEs?
Acute w/drawal rxns –> flu-like symptoms (malaise, lethargy, generalized aches)
CNS –> sedation or insomnia/agitation/nervousness
Sexual dysfunction
weight gain or weight loss
Rare side effects of SSRIs BIG STAR?
Serious side effects include: SEROTONIN SYNDROME
–> sweating, hyperreflexia, akathisia/myoclonus, shivering/tremors; increased risk when given concurrently with other serotonin-affecting agents
Suicidality (attempts/completions) –> highest risk in children/adolescents/young adults
distinct features of 5-HT syndrome?
HYPER-reflexia, clonus, dilated pupils, HYPER-active bowel sounds
Compare to neuroleptic malignant syndrome –> opposite of the above
which SSRI has highest risk of drug-drug interactions (CYP450)? Least risk?
most-Fluoxetine (broad and strong inhibitor)
Least-citalopram and sertraline (mild)
__ selectively inhibit the pre-synaptic reuptake of serotonin (via SERT) AND NE via NET
SNRI’s including TCAs
Only __ SNRI’s have impact on these 3 key non-efficacy-related receptors: H1, M, a1
BIG STAR
TCA-based SNRIs
Cardiovascular (alpha) SEs of TCAs?
Anticholinergic (muscarinic) SEs of TCAs?
CNS (histamine) SEs of TCAs?
BIG STAR
alpha-tachycardia, orthostatic hypotension, dysrhythmias
M-dry mouth, urine retention/constipation, blurred vision, increased IOP
H1-sedation/fatigue, dizziness/seizures
the 3 C’s of Toxic ingestion of TCAs?
Coma
Cardiotoxicity –> Quinidine-like effect conduction abnormality
Convulsions
Non-TCA SNRIs have SEs relatively similar to SSRIs with less risk (in general) of __ dysfunction (higher with venlafaxine)
sexual
which 2 SARAs act like SSRIs and also selectively block post-synaptic a1 receptors on NE neurons and post-synaptic 5-HT2a (& H1 blockade, sedation)?
trazodone and nefazodone
which SARA selectively blocks pre-synaptic a2 receptors on NE and 5-HT neurons?
Mirtazapine
blocks post-synaptic 5HT2a/2b/3 receptors
NO SERT/NET activity
H1 blokade (sedation)
this drug/class selectively inhibits pre-synaptic reuptake of NE via NET and Dopamine via DAT
NDRIs –> Bupropion
Side effects of NDRIs (bupropion) BIG STAR*?
Seizures (dose-dependent, or those at risk)
which MAOI is B-selective?
Selegiline –> becomes non-selective at high doses
what is required if you have drug interactions with 5-HT/NE affecting drugs (while taking MAOIs), i.e., some anti-hypertensives, amphetamines, SSRIs/TCAs/SNRIs?
BIG STAR
2 week washout period - Fluoxetine; 5 wks)
Major concern with MAOIs is risk of __
BIG STAR
hypertensive crisis
non-selective MAOIs inhibit MAO-A necessary in GI for tyramine metabolism –> increased tyramine –> significant catecholamine release –> hypertensive crisis
Watch out for consuming aged cheeses, fava beans, processed/cured meats, wine/beer
S/S of HTN crisis with MAOIs? BIG STAR
Severe HA N/V Sweating/severe anxiety nosebleed tachy chest pain changes in vision SOB confusion
which antidepressant drug class should you choose to avoid anticholinergic SEs?
SSRIs –> Citalopram, Escitalopram, Fluoxetine, Sertraline
Atypicals –> Bupropion
SNRIs –> desvenlafaxine, duloxetine, levomilnacipran, venlafaxine
Serotonin modulators –> trazodone, vilazodone
which antidepressant drug class that is most likely to cause anticholinergic SEs?
TCAs
slight effect with MAOIs
which antidepressant drug class should you choose to avoid drowsiness?
SSRIs
Atypicals (buporpion)
SNRIs
Serotonin modulator –> Just Vilazodone
which antidepressant drug class that is most likely to cause drowsiness?
TCAs
Slight to low effect with most MAOIs
which antidepressant drug class should you choose to avoid orthostatic hypotension?
atypicals –> bupoprion and mirtazapine
SNRIs
5-HT modulators –> Just vilazodone
SSRIs have slight (+) effect
which antidepressant drug class that is most likely to cause orthostatic hypotension?
TCAs
MAOIs
5-HT modulator –> Trazodone
which antidepressant drug class should you choose to avoid QTc prolongation?
Most of SSRIs
SNRIs
5-HT modulators –> vilazodone and nefazodone
MAOIs
which antidepressant drug class should you avoid d/t QTc prolongation SEs?
TCAs
which antidepressant drug class should you choose to avoid weight gain?
Atypical –> Bupoprion
SNRIs
5-HT modulators
which antidepressant drug class should you avoid due to risk of weight gain?
TCAs
Atypical –> Mirtazapine
which antidepressant drug class should be selected to avoid sexual dysfunction?
Atypicals –> bupoprion and mirtazapine
Nefazodone (5-HT modulator)
Selegiline (MAOI)
which antidepressant drug class should you avoid d/t risk of sexual dysfunction?
SSRIs
TCAs
MAOIs except selegiline
the 5 R’s for general antidepressant efficacy
1) Response=>50% reduction in symptoms from baseline
2) Remission=symptom-free
3) Recovery=2-6 months of ongoing Remission (not cured)
4) Relapse=return of symptoms AFTER Remission but before Recovery
5) Recurrence=return of symptoms AFTER Recovery
Since all antidepressants either are, or can be, associated with a withdrawal syndrome, what is recommended when getting a pt off of them? BIG STAR
slow titration downward is recommended for most agents (t1/2)
Classic SE of Lithium? BIG STAR
Polyuria (polydipsia) –> Clinical picture of Nephrogenic DI
what type of ion is Lithium? How is it handled by the kidneys?
Monovalent ion
handled by kidneys similar to Na/K
Li competes with Na for kidney reabsorption
Lithium drug interactions with other agents impaction Na/K? BIG STAR
Diuretics –> via preferential Na loss and Li reabsorption; Especially Thiazides (HCTZ)
ACEi’s–> Esp lisinopril
NSAIDs
therapeutic window of lithium?
narrow therapeutic window –> 0.6-1.0 mEq/mL
indications for Lithium?
acute and maintenance tx of mania/bipolar I disorder
augmentation in unipolar depressive pts w/inadequate response to antidepressant tx
off-label: reduced risk of suicide and all-cause mortality in pts with mood disorders
List mood stabilizers that were initially developed as anti-seizure agents:
Carbamazepine
Valproic acid
Lamotrigine
Indications for Divalproex?
ACUTE Bipolar I (w/or w/out psychotic features)
Indications for Carbamazepine?
ACUTE and MAINTENANCE tx of acute mania and mixed episodes (Bipolar I)
Indications for Lamotrigine?
MAINTENANCE of Bipolar disorder (I and II)
Carbamazepine effect of CYP450? BIG STAR
Major CYP450 INHIBITOR