Final Exam Flashcards
goals of therapy for depression
alleviate the signs and symptoms
types of depression
reactive (60%)
MDD (25%)
Bipolar Affective (15%)
physiological signs of depression
decreased sleep, appetite changes, fatigue, psychomotor dysfunction
psychologic symptoms of depression
dysphoric mood, worthlessness, guilt, loss of interest/pleasure
cognitive symptoms of depression
decreased concentration, suicidal ideation
Drug induced depression
antihypertensive and cardiovascular agents, sedative hypnotics, anti-inflammatory and analgesics, steroids, anti-Parkinson, anti-neoplastics, neuroleptics
onset of action of anti-depressant drugs
biochemical effects within hours; clinical changes are not seen for weeks
MOA for MAOIs (monoamine oxidase inhibitors)
MAO-A inhibitors- blocks the degradation of NE and 5HT causing more NE and 5HT to be released from the vesicles into the synapse
MAO-B inhibitors - block the break down of dopamine
Non-selective MAO inhibitors; used for treatment resistant depression; irreversible inhibitors
Phenelzine (Nardil)
Tranylcypromine (Parnate)
MAO-B selective inhibitors; used for Parkinson’s; reversible inhibitors
Selegiline (Eldepryl/Ensam)
MAO-A selective inhibitors; not used in the US; reversible
Moclobemide (Manerix)
MAO inhibitors SE
headache, drowsiness, dry mouth, weight gain, orthostatic hypotension, sexual dysfunction
MAO inhibitors drug interactions
cause hypertensive crisis; otc cold medications, TCAs, SSRIs, L-DOPA
reuptake blockers site of actions
allosteric
indications for tricyclic antidepressants
depression, panic disorder, chronic pain, and enuresis; warning: patients more likely to commit suicide or self harm 2 weeks into treatment
tertiary amines
inhibit both NET and SERT and are antagonists at H1, M, and A1 receptors
side effects of tertiary amines
sedation, autonomic side effects, weight gain, cardiovascular conduction disturbances
tertiary amine drugs; have a three-ring structure
Imipramine (Tofranil)
Amitriptyline (Elavil)
Clomipramine (Anafranil)
Doxepin (Adapin)
Secondary amines drugs
Desipramine (Norpramin)
Nortriptyline (Pamelor)
Protriptyline (Vivactil)
Maprotiline (Ludiomil) (NET inhibitor)
Secondary amines info
Better at inhibiting NET than SERT
Less sedation, anticholinergic, autonomic, weight gain, and cardiovascular SE than tertiary amines
Side effects of all TCAs (general)
anticholinergic, CV, neurological, weight gain, look for suicidality
SSRIs drugs
Fluoxetine (Prozac)
Fluvoxamine (Luvox)
Paroxetine (Paxil)
Sertraline (Zoloft)
Citalopram (Celexa)
Escitalopram (Lexapro)
side effects of SSRIs
N/V, HA, sexual dysfunction, anxiety, insomnia, tremor
SSRI discontinuation
brain zaps, dizziness, sweating, nausea, insomnia, tremor, confusion, vertigo
serotonin syndrome symptoms
hyperthermia, muscle rigidity, restlessness, myoclonus, sweating, shivering, seizures, coma
s/o to buspirone MOA
5HT1A (serotonin 1A) agonist
SSRI and 5HT1A partial agonists
vilazodone (Viibryd)
vortioxetine (Brintellix)
Serotonin-norepinephrine reuptake inhibitors (SNRIs)
Venlafaxine (Effexor)
Desvenlafaxine (Pristiq)
Duloxetine (Cymbalta)
Milnacipran (Ixel)
Levomilnacipran (Fetzima)
NE selective reuptake inhibitors
- reboxetine (Vestra) (not used in US)
- Atomoxetine (Strattera)
NMDA antagonists
glutamate antagonists; act as channel blockers (ketamine and scopolamine, esketamine)
treatment for PPD
fluoxetine, paroxetine, and venlafaxine, CBT, brexanolone
Brexanolone MOA and info
re-sensitizes GABA-A receptors after pregnancy
Filbanserin (Addyi)
for hypoactive sexual desire disorder; agonist at 5HT1A and 5HT2A/C antagonist
pharmacotherapy of bipolar
mood stabilizers, atypical antipsychotics, CCBs
Lithium MOA
ion; depletes PIP2 and Gq receptor signaling (PLC and IP3)
anticonvulsants used for bipolar mood stabilizers
Valproic acid and sodium valproate, carbamazepine/oxcarbazepine, lamotrigine, topiramate
risk of recurrence in depression
1 episode: 50-60%
2 episodes: 70%
3 episodes: 90%
recurrence info
- risk becomes lower over time as duration of remission increases
- persistent mild symptoms during remission is a predictor of recurrence
- function deteriorates during the episode and goes back to baseline upon remission
diagnostic info
at least one of the symptoms must be depressed mood or loss of interest or pleasure in doing things
DSM-5 Criteria SIG E CAPS
difficulty sleeping, interest decreased, guild, energy loss, concentration difficulties, appetite change, psychomotor agitation, suicidal ideation
Self-administered rating scales
PHQ-9; Patient Health Questionnaire (Primary care)
QIDS-SR-16: Quick inventory of Depressive Symptomatology Self-Report (psych practice)
Mood disorder questionnaire (MDQ) (used to rule out bipolar)
Goals of treatment for depression
- reduce or eliminate signs/symptoms of depression
- restore occupational/psychosocial functioning to baseline
- reduce the risk of recurrence/relapse
- reduce the risk of harmful consequences/suicidal ideation
risk of suicidality
boxed warning for suicidality in all patients 24 and younger; counsel them
clinical factors for bipolar
- depression is the mood pole experienced most; often misdiagnosed
- alcohol and substance use common in bipolar
- anxiety disorders are common comorbidities
DSM-5 classification
- Bipolar 1 disorder: > = 1 manic episode
- Bipolar 2 disorder; major depressive and hypomanic episodes
pharmacotherapy for bipolar
mood stabilizers and antipsychotics
lithium use and dosing
very effective for bipolar 1; associated with decrease in suicidality, but has a narrow therapeutic index = dangerous and can be fatal in overdose
- use 1:1 conversion for different dosage forms
lithium SE and other
may cause hypothyroidism, teratogenic; causes cardiac structural abnormality (avoid use in first trimester)
Lithium monitoring
need to keep sodium levels and water levels consistent; renally eliminated; do not use with NSAIDs
Valproate info
- several dosage forms; 1:1 conversion but ER dosage form less bioavailable
- risk for GI ulcerations in the syrup and capsule
- serum levels 80-125mcg/mL
Valproic acid AE
- unsafe in pregnancy; neural tube defects & negative IQ effects
- may cause PCOS
- anorexia, N/V/D, dyspepsia, ulceration, thrombocytopenia, platelet dysfunction, weight gain, hyperammonemia
Valproate monitoring
- pregnancy test, LFTs, and CBC
- Serum concentration
- serum ammonia (if needed)
- interacts with lamotrigine (stevens-johnson syndrome)
other mood stabilizers
- carbamazepine: thrombocytopenia/hematologic effects
- oxcarbazepine: CYP3A4 inducer, hyponatremia
-lamotrigine: for depressive episodes only - topiramate: weight loss, heat intolerance, metabolic acidosis/kidney stones, teratogen (cardiac structural defects)
Antipsychotics
atypical antipsychotics can be used as monotherapy or can be used in combination with other mood stabilizers (valproate or lithium)
- monitor for weight gain, tardive dyskinesia, etc.
which bipolar meds cannot be used in pregnancy
valproic acid, carbamazepine, topiramate, lithium (first trimester)
- often choose to use atypical antipsychotics in pregnancy
AB fibers
fastest, identify touch and pressure and innervate the skin
AS fibers
fast; identify sharp/prickly pain “first pain”
C fibers
pain, temperature, touch, pressure, itch, dull/aching pain
role of substance P
vasodilation, degranulation of mast cells, release of histamine, inflammation and prostaglandins, increase sensitization (ex: sunburn)
neuropathic pain causes
increased AMPA and NMDA expression and sensitivity
inflammatory pain
throbbing, pulsating,
neuropathic pain
stabbing, shooting, burning, tingling
visceral pain
squeezing
CYP 3A4 opioids
makes opioids starting with nor
morphine
bioavailability is 25%
CYP 3A4 and 2D6
fentanyl
potent af
opioids that are full agonists
fentanyl
hydromorphone and oxymorphone
morphine
hydrocodone
oxycodone
non-phenanthrene opioids
tramadol; mild opiate- has SNRI properties
meperidine (demerol)- used to treat rigors; metabolized by 3A4; neurotoxic
opioids with NMDA block
methadone (blocks ion channel glutamate receptor; blocks pain signal in spinal cord)
prolongs QTC interval
opioids used for anti-diarrheals
diphenoxylate/atropine (lomotil)
loperamide (Imodium) - no BBB access
Eluxadoline (Viberzi) Mu/Kappa agonist; delta antagonist
buprenorphine MOA
partial Mu agonist, weak k agonist, and sigma antagonist
adverse opioid effects
tolerance/hyper-algesia: euphoria, respiratory depression, urinary retention, nausea
no tolerance: itch, constipation, miosis
methadone MOA
slow acting full agonist, provides relief from withdrawal, NMDA antagonist
buprenorphine
partial agonist to reduce withdrawal and euphoric symptoms
naltrexone MOA
ER IM injection or daily PO; will cause withdrawal, full antagonist
Naloxone MOA
antagonist, rapid onset, short half life
Naltrexone MOA
antagonist, PO with 4 hour half life
Neonatal Abstinence Syndrome symptoms
tremors, yawning, poor feeding, sweating in 24-48 hours after birth; serious withdrawal caused by heroin and other opiates including seizuresp
pharmacologic neonate abstinence syndrome treatment
morphine sulfate, SL buprenorphine, clonidine
Mu
endorphins (Mu-ey like reed)
Kappa
Dynorphins (kappa delta)
Delta
Enkephalins (keflex after delta dental)
orphanin/ORL1
nociceptin/orphanin (orphans are noice)
pain pathway
mediators recruit inflammatory cells: eicosanoids: arachadonic acid metabolites, prostaglandins (redness, heat, pain), thromboxanes, leukotrienes (swelling), cytokines (pain)
COX 1 protects stomach lining when expressed in the GI system
through PGE-2 and PGI-2
Aspirin MOA
irreversible inhibition of COX-1
Other NSAIDS MOA
competitive inhibitors of COX-1 and COX-2
reyes syndrome
vertigo/tinnitus, respiratory alkalosis, metabolic acidosis
aspirin overdose tx
increase urinary excretion; dextrose, sodium bicarbonate
misoprostol use
PGE-1 analog; protects GI lining
enolic acid nsaids
meloxicam; cox-2 selective at low doses; used for arthritis
NSAIDS AEs
peripheral edema, GI bleeding, inhibition of uterine motility
AE for acetaminophen
hepatic necrosis; do not take with alcohol
COX-2 selective inhibitors
reduce ulcers and GI bleeds, higher risk of blood clots, stroke, and heart attacks (reduced PGI2 formation)