Psychology Flashcards
Major Depressive Disorder (MDD):
-Proposed etiology
-Medical conditions that can cause secondary depression
-Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5-TR): M SIG E CAPS
-What is Ham-D or HDRS?
Proposed etiology: combination of genetic, environmental, and biologic factors
-Decreased neurotransmitters: serotonin (5-HT), norepinephrine (NE), epinephrine (EPI), dopamine (DA), glutamate, and acetylcholine (Ach)
Medical conditions: stroke, PD, dementia, MS, hypothyroidism, vitamin D deficiency, metabolic conditions (hypercalcemia), malignancy, overactive bladder, infections
DSM-5-TR: at least 5 of the following in two week period which MUST also include depressed mood or diminished interest/pleasiure:
-M: Mood (depressed) Sleep (increased/decreased) Interest/pleasure (diminished)
-G: Guilt or feelings of worthlessness Energy (decreased) Concentration (decreased)
-Apetite (increased/decreased) Psychomotor agitation or retardation Suicidial ideation
HDRS: Hamiliton Depression Rating Scale: most widely used depression assessment for medical office that rates symptoms on numerical scale and total score is added to help assess need for medication adjustment
-Score <7: no depression
-Score 7-17: mild depression
-Score 18-24: moderate depression
-Score 25 or higher: severe depression
What are drugs that can cause or worsen depression?
ADHD medications: atomoxetine (Strattera)
Analgesics: indomethacin
Antiretrovirals: NNRTIs (efavirenza, rilpivirine)
CV meds: beta-blockers (more often non-selective especiallly propranolol)
Hormones: hormonal contraceptives, anabolic steroids
Others:
-Antidepressants: BBW
-Benzodiazepines
-Systemic steroids
-Interferons
-Varenicline
-Ethanol
Major Depressive Disorder (MDD):
1. What is important to rule out before TX and why?
- What are natural products that may be used for depression? What is their evidence/considerations?
- How long does it take a typical antidepressant to truly work?
-
Bipolar disorder - to avoid inducing mania or causing rapid cycling between mania and depression
-When depression and anxiety occur together, BZDs should NOT be used alone as they can mask or worsen depression and be problematic in substance misuse disorders - St. John’s Wort, SAMe (S-adenosyl-L-methionine), and 5-HTP (5-hydroxytryptophan), valerian
-Efficacy: less evidence
-St. John’s Wort:* weak recommendation to use in pts NOT pregnant or breastfeding and prefer herbal; broad-spectrum CYP450 enzyme inducer with many DDIs; also photosensitizing*
-St. John’s Wort, SAMe, and 5-HTP: may increase risk of serotonin syndrome
-SAMe: bleeding risk -
4-8 weeks
-Physical symptoms such as low energy improve within 1-2 weeks
-Psychological symptoms: month or longer
What is the BBW all antidepressants have? What are withdrawal symptoms of D/C antidepressants abruptly?
BBW: * Increase in suicidal thoughts or actions in some children, teenagers, or young adults within first few months of TX or when dose changed
-MedGuides are REQUIRED*
Withdrawal symptoms: anxiety, agitation, insomnia, dizziness, flu-like symptoms
-Usually occurs for a week
-Can be improved when re-taking antidepressant
-Taper drugs gradually over weeks (exception of fluoxetine because of long T1/2)
Depression in Pregnancy and Postpartum Depression
1. Are antidepressants recommended during pregnancy?
- What is first line TX?
- What are antidepressant recommendations during pregnancy?
- What are antidepresssant recommendations during postpartum depression?
- YES - benefit outweighs risk; untreated depression especially in 1st and 3rd trimestere can cause adverse outcomes (premature birth, low birth weight, postnatal complications)
-
Psychotherapy
-Side note: breastfeeding can help -
Outweigh risk versus benefit
-Pt has been on antidepressant: consider continuing same medication
-Pt not currently taking antidepressant: SSRIs (escitalopram, sertraline) first-line options (paroxetine: AVOID due to cardiac effects) –> SSRIs carry warning of persistant pulmonary HTN of newborn (PPHN)
-Can taper off medication if mild depression and pt has had no symptoms for 6 months
-Avoid doxepin -
SSRIs preferred
-Alternatives: IV brexanolone (Zulresso), oral zuranolone (Zurzuvae): CIV indicated for postpartum (can cause excessive sedation)
Selective Serotonin Reuptake Inhibitors (SSRIs):
-Drugs/Brands
-MOA
-ROA
-TX
-Structure
Drugs: citalopram (Celexa), escitalopram (Lexipro), fluoxetine (Prozac), paroxetine (Paxil, Paxil CR), sertraline (Zoloft), fluvoxamine
MOA: inhibit reuptake of 5-HT, weakly affect NE and DA
ROA: PO
-ALL: available in solution (except: fluvoxamine)
TX: depression, variety of anxiety disorders
-Fluvoxamine: ONLY for OCD
-Paroxetine (Brisdelle): can be used for severe vasomotor symptoms associated w/ menopause
-Fluoxetine: can be combined w/ olanzapine for TX-resistant depression
-Fluoxetine, Paxil CR, sertraline: also approved for premenstrual dsyphoric disorder (PMDD): can be continuous or intermittent dosing
Structure: escitalopram is the S-enantiomer of citalopram
Selective Serotonin Reuptake Inhibitors (SSRIs): Dosing
-Citalopram
-Escitalopram
-What time of day should SSRIs be taken?
Citalopram: 20-40mg PO QD
-Max dose: 40mg/day
-Max dose in eldery (>60 yo): 20mg/day
Escitalopram: 10mg PO QD
-Max dose: 20mg/day
-Max dos in elderly (>60 yo): 10mg/day
Timing:
-MOST activating: FLUOXETINE (take in AM)
-MOST sedation: PAROXETINE, fluvoxamine (take in PM)
-Others: take dose in AM; if causing sedation, take in PM
Selective Serotonin Reuptake Inhibitors (SSRIs):
-AVEs
-Warnings
-CIs
AVEs:
-SEXUAL SIDE EFFECTS: decreased libido, ejaculation difficulties, anorgasmia, ED
-KNOW: somnolence, insomnia, nausea, dry mouth, diaphoresis (dose-related), weakness, tremor, dizziness, HA
-Osteopenia/osteoporosis, restless leg syndrome
Warnings:
-QT PROLONGATION: especially with citalopram > escitalopram (max dosing for elderly, liver disease, or w/ poor CYP2C19 metabolizer or on 2C19 inhibitors) –> sertraline MOST preferred in cardiac risk
-Syndrome of Inappropriate Antidiuretic Hormone (SIADH)/HYPONATREMIA, FALL RISK (Beer’s Criteria) –> caution in hx of falls/fractures or use of CNS depressants
-BLEEDING (additive risk)
CIs:
-DO NOT USE WITH MAOIs, IV methylene blue, or pimozide (increases risk for pimozide toxicity)
-Fluoxetine, paroxetine: do not use w/ thioridazine
-Fluvoxamine: do not use w/ alosetron, thioridazine, or tizanidine
-Sertraline solution: do not use w/ disulfiram
-Brisdelle (paroxetine): PREGNANCY
SSRIs: DDIs
- MOAis - 5-HT syndrome OR hypertensive crisis
-Allow 2 week interval between MAOI and SSRI (EXCEPTION: fluoxetine: 5 weeks)
-do NOT initiate in pts receiving linezolid or IV methylene blue (5-HT syndrome as well) - QT prolongation: other QT prolonging drugs, especially w/ citalopram, escitalopram
- Bleeding risk: anticoagulants, antiplatelets, NSAIDs, select natural products (gingko, garlic, ginger, ginseng, glucosamine, fish oil), thrombolytics
- Fluoxetine, paroxetine, fluvoxamine: CYP2D6 inhibitors
-Tamoxifen: requires CONVERSION via 2D6 (decreased efficacy) –> venlafaxine preferred
-Some antipsychotics (aripiprazole, olanzapine) are 2D6 substrates and may need lower dose
-do NOT use w/ thioridazine, pimozidine, or cimetidine
-Cuation in drugs that cause orthostasis or CNS depression (fall risk)
Vilazodone and Vortioxetine:
-Brand
-MOA
-ROA
-Adminsitration considerations
-AVEs
-Warnings
-CIs
-DDIs
Brand: vilazodone (Viibryd, Viibryd Starter Pack), vortioxetine (Trintellix)
MOA: “SSRI Combined Mechanism”
-Vilazodone: SSRI + 5-HT1a partial agonist
-Vortioxetine: SSRI + 5-HT3 receptor antagonist + 5-HT1a partial agonist
ROA: PO
Administration considerations (Vilazodone): take with food
AVEs: less sexual side effects than SSRIs and SNRIs, N/V/D, insomnia, decreased libido
-Vortioxetine: constipation
Warnings: avoid in pts w/ seizure hx
CI: within 14 day use of MAOI; do NOT use w/ linezolid or IV methylene blue
DDI: vortioxetine - lower dose by 50% w/ 2D6 inhibitors (ex. bupropion, fluoxetine, paroxetine, or quinidine)
Serotonin and Norepinephrine Reuptake Inhibitors (SNRIs):
-Drugs/Brands
-ROA
-TX
-Dosing for venlafaxine
Drugs: venlafaxine (Effexor XR), duloxetine (Cymbalta), desvenlafaxine (Pristiq), levomilnacipran (Fetzima)
ROA: PO
TX: depression, variety of anxiety disorders
-Venlafaxine: depression, GAD, panic disorder, social anxiety disorder
-Duloxetine: depression, peripheral neuropathy, fibromyalgia, GAD, chronic musculoskeletal pain
-Desvenlafaxine: approved for depression ONLY
Venlafaxine max dose: 375mg/day (IR formula)
Serotonin and Norepinephrine Reuptake Inhibitors (SNRIs):
-AVEs
-Warnings
-CIs
AVEs:
-Side effects simliar to SSRIs (sexual SEs, somnolence/insomnia, nausea, dry mouth, weakness, tremor, dizziness, HA, osteopenia/osteoporosis, restless leg snydrome)
-SEs related to NE: increased HR, dilated pupils (can lead to narrow angle glaucoma), dry mouth, excessive sweating, constipation
-Can affect uretheral resistance: caution in pts prone ot obstructive urinary disorders
-Increased BP: greatest risk w/ venlafaxine >150mg/day
-Pristiq: can leave ghost tablet in stool
Warnings:
-SIADH/hyponatremia, fall risk (Beer Criteria)
-Bleeding risk
CIs:
-Use with MAOIs
-Do NOT initiate in pt receiving linezolid or IV methylene blue
-do NOT use levomilnacipran w/ CrCl <15mL/min or duloxetine w/ CrCl <30mL/mi
Serotonin and Norepinephrine Reuptake Inhibitors (SNRIs): DDIs
- MAOIs: need washout period of 2 weeks
-Do NOT initaite w/ linezolid or IV methylene blue - Additive QT prolongation risk with venlafaxine
- Caution w/ medcations that can increase BP
- Duloxetine: moderate CYP2D6 inhibitor –> tamoxifen requires 2D6 for conversion
- Bleeding risk w/ anticoagulants, antiplatelets, NSAIDs, natural products (garlic, gingko, ginger, ginseng, glucosamine, fish oils), thrombolytics
Tricyclic Antidepressants (TCAs):
-Drugs/Brand
-MOA
-ROA
-What time to day to take?
-TX
-Structure
Drugs/Brands/Structure:
-Tertriary amines (slightly more affective, but more AVEs): amitriptyline (Elavil), doxepin (Silenor, Zonalon), clomipramine, imipramine, trimipramine
-Secondary amines (relatively selective for NE, but less effective): notriptyline (Pamelor), amoxapine, desipramine, maprotiline, protripytline
MOA: inhibit NE and 5-HT reuptake
-Also inhibits: ACh and histamine receptors
ROA: PO
-Amitriptyline: QHS or divided doses
TX: depression
-Silenor: insomnia
-Zonalon cream: pruritus
Tricyclic Antidepressants (TCAs):
-AVEs
-CIs
-DDIs
AVEs:
-Cardiotoxicity:
1. QT PROLONGATION with overdose (monitor for SI as overdose can quickly cause fatal arrhythmias) –> obtain ECG baseline if cardiac risk factors or >50 yo
2. Orthostasis
3. Tachycardia
-*Anticholinergic (Beer’s Criteria): *
1. Dry mouth, blurred vision, urinary retention, constipation –> taper off to avoid cholinergic rebound
2. Vivid dreams, weight gain (varies w/ agent), sedation, sweating, myoclonus (muscle twitching - symptom of drug toxicity)
3. Risk of falls - avoid if hx of falls/fractures or use w/ CNS depressants
CIs: do NOT use w/ MAOIs, linezolid, or IV methylene blue; MI; glaucoma and urinary retention (doxepin)
DDIs:
-MAOIs and hypertensive crisis: two-week washout period
-Additive QT prolongation risk
-Metabolized by CYP2D6
Bupropion:
-Brands, ROAs, and their associated indications
-Dosing
-MOA
-AVEs
-Warnings
-CIs
Brands:
-Wellbutrin SR or XL: depression
-Wellubtrin XL and Aplenzin: seasonal affective disorder (SAD)
-Buproprion SR (Zyban): smoking cessation
-With dextromethorphan (Auvelity): ER tablet for depression
-With naltrexone (Contrave): weight management
Dosing: do NOT exceed 450mg/day due to seizure risk in IR and XL
MOA: DA and NE reuptake inhibitor
AVEs: dry mouth, CNS stimulation (insomnia, restlessness), tremors/seizures (dose-related), weight loss, HA/migraine, N/V, constipation, possible BP changes (more HTN than than hypotension)
-Sexual dysfunction: rare (no effect on 5-HT) –> can use if issues w/ other antidepressants
-Auvelity: dizziness, excessive sweating
Warnings: neuropsychiatric AVEs when used for smoking cessation (mood changes, hallucinations, paranoia, aggression, anxiety)
CI:
-Seizure disorder, hx of anorexia/bulimia (eating disorders), abrupt D/C of ethanol or sedatives
-do NOT use with MAOIs (allow 2-week washout), linezolid, or IV methylene blue or other forms of bupropion
Monoamine Oxidase Inhibitors (MOAIs):
-Drugs/Brands
-MOA
-ROA
-TX
Drugs:
-Nonselective MAOIs: isocarboxazid (Marplan), phenelzine (Nardil), tranylcypromine (Parnate)
-Selective MAO-B: selegiline (Emsam, Zelepar)
MOA: inhibit monoamine oxidase that breaks down catecholamines, including 5-HT, NE, EPI, and DA
-MOA-A: 5-HT, DA, EPI, and NE
-MOA-B: DA
ROA: PO
-Emsam: transdermal patch
TX: depression
-Zelepar: ODT for Parkinson disease
Monoamine Oxidase Inhibitors (MOAIs):
-AVEs
-Warnings
-CIs
AVEs:
-Anticholinergic: taper upon D/C to avoid cholinergic rebound
-Orthostasis
-Sedation (except tranylcypromine causes stimulation)
-Sexual dysfunction, weight gain, HA, insomnia
-Selegline: constipation, gas, dry mouth, loss of appetite, sexual dysfunction
Warnings:
-NOT commonly used
-Watch for DDIs and drug-food interactions (CAN BE FATAL)
-Hypertensive crisis or serotonin syndrome with TCAs, SSRIs, SNRIs, many other drugs, and tyramine-containing foods
CIs:
-Hx of CVD, cerbrovascular defect, HA, hepatic disease, pheochromocytoma
-do NOT use w/ other sympathomimetics (hypertensive crisis)
-Severe renal disease (isocarboxazid, phenelzine)
Monoamine Oxidase Inhibitors (MOAIs): DDIs
To avoid hypertensive crisis, serotonin syndrome, or psychosis: DO NOT USE WITH drugs that increase EPI, NE, 5-HT, or DA
- Increase 5-HT: SSRIs, SNRIs, mirtazapine, trazodone, triptans, buspirone, dextromethorphan, linezolid, lithium, tramadol, opioids, St. John’s Wort
- Increase EPI: buproprion, SNRIs, levodopa, linezolid, methylene blue, stimulants for ADHD and OTC diet pills/herbal weight loss products
- Tyramine-rich foods that increase NE: aged cheese, pickled herring, yeast extract, air-dried meats, sauerkraut, soy sauce, fava beans, some red wines and beers (tap beer and any beer that has NOT been pasteurized - canned and bottle beers contain little or no tyramine)
Mirtazapine:
-Brand
-MOA
-ROA
-TX
-AVEs
-Warnings
-CIs
Brand: Remeron
MOA: central presynaptic alpha-2 adrenergic antagonist effects that increase NE and 5-HT
ROA: PO
TX: most commonly in oncology and skilled nursing facilities to help with sleep (dosed as QHS) and increase appetite in frail
AVEs: sedation, increased appetite, weight gain, dry mouth, dizziness, agranulocytosis (rare)
Warnings: anticholinergic effects, QT prolongation, blood dyscrasias, CNS depression
CIs: do NOT use w/ MAOIs, linezolid, or IV methylene blue
Trazodone:
-Brand
-MOA
-ROA
-What time of day to take?
-TX
-AVEs
-CIs
Brand: Desyrel, Oleptro
MOA: inhibits 5-HT reuptake; inhibits H1 and alpha-1 adrenergic receptors
ROA: PO QHS
TX: rarely for antidepressant effects –> off-label for sleep
AVEs: sedation (ER may be less sedating), orthostasis (risk of falls in elderly), sexual dysfunction and risk of priapism (go to ER for painful erection longer than 4 hours)
CIs: do NOT use w/ MAOIs, linezolid, or IV methylene blue
Nefazodone:
-MOA
-ROA
-AVEs
-CIs
-BBW
MOA: inhibits 5-HT and NE reuptake, 5-HT2, and alpha-1 adrenergic receptors
ROA: PO
AVEs: similar to trazodone, but less sedating
-Trazodone side effects: sedation, orthostasis (risk of falls in elderly), sexual dysfunction and risk of priapism (go to ER for painful erection longer than 4 hours)
CIs:
-Hepatic disease
-Concurrent use w/ MOAIs, carbamazepine, cisapride, pimozide, or triazolam
BBW: hepatotoxicty (less used due to this)
Select an antidepressant or what not to use based on the following scenarios:
1. Cardiac/QT risk
- Smoker
- Peripheral neuropathy or pain
- Seizure risk
- Cardiac:
-Sertraline is preferred
-do NOT choose a QT-prolonging drug/dose (ex. high doses of escitalopram/citalopram, venlafaxine)
-Watch for additive QT effects: SSRIs, SNRIs, TCAs, mirtazapine, or trazodone - Smoker: buproprion SR
- Peripheral neuropathy or pain: duloxetine
- Seizure risk: avoid bupropion
Select an antidepressant or what not to use based on the following scenarios:
1. Pregnancy
- Daytime sedation
- Sexual dysfunction
- Pregnancy:
-Mild-moderate depression: psychotherapy always
-Certain SSRIs (escitalopram, sertraline) are first-line for drug therapy
-Avoid: paroxetine - Daytime sedation:
-Actiavting medications in AM (fluoxetine, bupropion)
-Sedating drugs later in day (paroxetine, mirtazapine, trazodone) - Sexual dysfunction:
-High risk: SSRIs, SNRIs
-Low risk: bupropion, mirtazapine