Psychiatry Flashcards
What is a complex heterogenous syndrome of disorganized and bizarre thoughts, delusions, hallucinations, inappropriate affect, and impaired psychosocial functioning?
schizophrenia
What neuro pathway is associated with positive symptoms of schizophrenia?
Mesolimbic pathway
What neuro pathway is associated with negative symptoms of schizophrenia?
Mesocortical Pathway
What dopaminergic pathway, when blocked, results in physical signs and symptoms (EPS)?
Nigrostriatal Pathway
What dopaminergic pathway, when blocked, results in prolactin release?
Tuberinfundibular Pathway
What is required for the diagnosis of schizophrenia?
two or more of the following each present for a significant portion of the time in a 1 month period. One of the symptoms must be 1, 2, or 3.
1. delusions
2. hallucinations
3. disorganized speech
4. disorganized or catatonic behavior
5. negative symptoms
What are the three phases of schizophrenia?
prodromal
active
residual
What are examples of positive symptoms in schizophrenia?
Suspiciousness
Delusions
Hallucinations
Conceptual disorganization
Ideas of reference
Illusions
Loose associations
Agitation
What are examples of negative symptoms in schizophrenia?
Blunted/flat affect
Alogia
Anhedonia
Avolition/amotivation
Poor grooming/hygeine
Poor judgement/insight
Lack of abstract thinking
Social withdrawal
What are examples of cognitive symptoms in schizophrenia?
Impaired attention
Impaired working memory
Impaired executive function
Impaired problem solving
Difficulty reading social cues
What is the primary mechanism of first generation antipsychotics?
blocks D2 receptors
minimal 5-HT2A receptor blockade
What are examples of EPS?
Acute dystonic reaction
Pseudoparkinsonism
Akathisa
Tardive dyskinesia
How is acute dystonic reaction treated?
Potent anticholinergic
no PO medications
How is pseudoparkinsonism treated?
Benztropine
How is akathisia treated?
propranolol
How is tardive dyskinesia treated?
PREVENTION!
Valbenazine, Deutetrabenazine
What is the major symptoms of neuroleptic malignant syndrome?
extreme muscle rigidity (lead pipe rigidity)
How is NMS treated?
quick taper of antipsychotic
supportive care
NMS occurs most commonly with which type of antipsychotics?
typical (first generation)
What are lower potency first generation antipsychotics?
Chlorpromazine
Thioridazine
What are medium potency first generation antipsychotics?
Loxapine
Perphenazine
What are high potency first generation antipsychotics?
Trifluoperazine
Thiothixene
Fluphenazine
Haloperidol
QTc prolongation is an adverse effect in which medications?
Thioridazine
Haloperidol
What is the primary mechanism of second generation antipsychotics?
potent 5-HT2A antagonism
moderate to high D2 antagonism
What are the common adverse effects with atypical antipsychotics?
weight gain
lipid changes
diabetes mellitus
Lipid changes are highest risk with which medications?
Clozapine
Olanzapine
Quetiapine
EPS are highest risk with which atypical antipsychotics?
Risperidone
Paliperidone
What adverse effect is dose-dependent with clozapine?
seizures
What are other QTc prolonging agents that should be used with caution with antipsychotics?
fluoroquinolones
amitriptyline
citalopram
Smoking can reduce plasma levels of which medications?
Olanzapine
Clozapine
Clozapine is the drug of choice for __
treatment refractory schizophrenia (failed two antipsychotic trials)
Clozapine is also FDA approved for reducing __ in schizophrenic, violent patients
suicidal behavior
What is unique about clozapine dosing?
Titrated more slowly due to risk of orthostatic hypotension
If discontinued for more than 48 hours, must restart at initial dose
If a patient experiences __ or __ with clozapine, do not rechallenge
myocarditis
cardiomyopathy
Clozapine is part of REMS due to risk of __
neutropenia
When should ANC be monitored when a patient is started on clozapine?
Week from initiation to 6 months
Then every other week for months 6-12
Monthly monitoring after 12 months
Clozapine is a major substrate of __
CYP1A2
Olanzapine IM should not be given with benzodiazepines due to __
respiratory depression
What is included in B52?
diphenhydramine
haloperidol
ativan
What is an appropriate first-line treatment for a patient with schizophrenia?
Aripiprazole
Risperidone
Ziprasidone
Which medication has the lowest risk for EPS (recommended for patients with Parkinsons)?
Quetiapine
Which medications has the highest risk for EPS?
FGAs
risperidone
paliperidone
Which medications have the highest risk for metabolic side effects?
Clozapine
Olanzapine
Quetiapine
Which medications have the lowest risk for metabolic side effects?
FGAs
aripiprazole
Ziprasidone
Asenapine
Which medications have the highest risk for QT prolongation?
Thioridazine
Haloperidol
Ziprasidone
Which medication has the highest risk for agranulocytosis?
Clozapine
Which medications have the highest risk for increased prolactin?
Risperidone
Paliperidone
Which medication has the highest risk for seizures?
Clozapine
Which long acting injectable antipsychotics are every 2 weeks?
Risperidone (Risperdal Consta)
Fluphenazine decanoate
Typical antipsychotics alleviate __ and atypical antipsychotics alleviate __ (pos/neg symptoms)
positive symptoms
positive and negative symptoms
What medications are in the class thioxanthenes?
thiothixene
loxapine
What medications are in the class butyrophenones?
haloperidol
What medications are atypical antipsychotics?
clozapine
risperidone
quetiapine
ziprasidone
olanzapine
aripiprazole
cariprazine
What is the MOA of clozapine?
D4 antagonist, 5-HT2A antagonist
What are classes of typical antipsychotics?
pheothiazines
thioxanthenes
buterophenones
What are classes of atypical antipsychotics?
benzodiazepines
benzisoxazoles
In the preferred conformation of chlorpromazine, the side chain tilts toward the __
chlorine-substituted ring
Phenothiazine derivatives without a CL at this position are in most cases __ as neuroleptics
inactive
Phenothiazines with two carbon sin side chain lack __
antipsychotic activity
___ attached to fourth carbon of butyrophenone skeleton is essential for antipsychotic activity
tertiary amino group
__ in para position of phenyl ring on Butyrophenone has the highest potency
F substituent
Pimozide has a __ duration of action than butyrophenones
longer
Pimozide may produce potential irreversible __
tardive dyskinesia
Risperidone has ___ effects similar to benzazepine-type antipsychotics.
anti-5HT
What is the definition of major depressive disorder?
one or more major depressive episodes without a history of mania or hypomania
What are the two hypotheses of depression?
Monoamine hypothesis
Dysregulation hypothesis
What is the DSM-V diagnosis of depression?
5 or more symptoms present for 2 weeks
Change from previous functioning
Functional impairment and/or distress
Symptoms not due to another cause
What are the eight factors of prognosis?
Sleep
Interest
Guilt
Energy
Concentration
Appetite
Psychomotor
Suicide
What is the definition of response to treatment?
50% reduction in symptoms
What is the definition of remission?
absence of symptoms, patient is back at baseline
What is the definition of recovery?
no symptoms/relapse after remission
What is the definition of relapse?
Return of symptoms within 6 months of remission
What is the definition of recurrence?
Separate episode of depression
How long does an acute phase of depression last?
6-12 weeks
How long does the continuation phase of depression last?
4-9 months
What is the time course of improvement on antidepressants?
Week 1: improved sleep/appetite, decreased anxiety
Weeks 1-2: increased activity and libido, improved self-care
Weeks 2-4: improvement in mood, less helplessness, decreased suicidal thoughts
What are nonpharmacologic treatments for depression?
psychotherapy
ECT
vagal nerve stimulation
transcutaneous magnetic stimulation
Vagal nerve stimulation is approved in chronic depression lasting more than __ years
2
What are acceptable first-line drugs for depression?
SSRIS
SNRIs
Burpropion
Mirtazapine
What are dose-dependent adverse effects associated with SSRIs?
nausea
anxiety
fatigue
sexual dysfunction
What is the treatment for serotonin syndrome?
Mild: drug withdrawal, Ativan for agitation
Moderate to Severe: Cyproheptadine, Chlorpromazine
Propranolol
What medications are SSRIs?
citalopram
escitalopram
fluoxetine
fluvoxamine
paroxetine
sertraline
Which SSRI should be taken in the morning?
fluoxetine
Which SSRI should be taken at night?
Paroxetine
Which SSRI is preferred in patients with cardiac risk?
sertraline
What ADE is unique to duloxetine?
urinary difficulty/hesitancy
What medications are SNRIs?
desvenlafaxine
duloxetine
venlafaxine
levomilnacipran
What medication is reasonable to dispense in 1 week supplies?
TCAs
What medications are tertiary TCAs?
amitriptyline
doxepin
imipramine
What medications are secondary TCAs?
desipramine
nortriptyline
Bupropion has no __ effect
serotonergic
Bupropion XL is the preferred formulation due to __
seizure risk
What is the MOA of mirtazapine?
pre-synaptic alpha2 antagonist
What are ADEs of mirtazapine?
somnolence
dry mouth
increased appetite
weight gain
What medications are serotonin modulators?
trazodone
vilazodone
vortioxetine
What are adverse effects of MAOIs?
hypotension
sedation
insomnia
weight gain
sexual dysfunction
MAOIs interact with __ in food?
tyramine
What medications are MAOIs?
phenelzine
selefiline TD patch
tranylcypromine
What medications are potent CYP2D6 inhibitors?
Fluoxetine
paroxetine
bupropion
What medication is a moderate CYP2D6 inhibitor?
Duloxetine
NSAIDs, Aspirin, and Anticoagulants interact with __
SSRIs
SNRIs
TCAs
Trazodone
Vilazodone
Vortioxetine
Triptans interact with __
MAOIs
SSRIs
SNRIs
Linezolid interacts with __
all serotonergic antidepressants
Tramadol interacts with __
bupropion
duloxetine
fluoxetine
paroxetine
antiarrhythmics, antipsychotics, and fluoroquinolone interact with __
citalopram
escitalopram
venlafaxine
TCAs
What are two alternative pharmacotherapy options for depression?
St John’s Wort
Omega-3 Fatty Acids
What is the MOA of esketamine?
NMDA receptor antagonist
What antidepressants are FDA approved for pediatrics?
fluoxetine and escitalopram
What is the most widely used antidepressant class used in pregnancy?
SSRIs
What is brexanolone used for?
post-partum depression
What antidepressant should be avoided in patient who is trying to avoid weight gain?
mirtazapine
What antidepressant should be considered in a patient trying to avoid weight gain?
buproprion
What antidepressant should be avoided in patients with cardiac issues?
citalopram
escitalopram
What antidepressant is contraindicated in patients with seizures?
bupropion
What antidepressant is indicated in both depression and pain?
duloxetine
What antidepressants should be avoided in patients trying to avoid sexual dysfunction?
SSRIs and SNRIs
What antidepressants should be used in patients trying to avoid sexual dysfunction?
bupropion
mirtazapine
A 5 week wash out period is required when switching from __ to another antidepressant
fluoxetine
A __ washout period is required when switching between MAOIs and SSRIs, SNRIs, TCAs, and bupropion.
2 week
What are neurotransmitters involved in depression?
serotonin
norepinephrine
peptides
growth factors
What activates TrkB receptor?
BDNF
What are anti-histamine side effects of TCAs?
sedation and weight gain
What are anticholinergic side effects of TCAs?
dry mouth
constipation
cycloplegia
What are side effects of TCAs associated with increased 5HT and NE?
increased appetite
What side effects of TCAs are related to alpha1 blockade?
sedation
postural hypotension
Stress increases cortisol and inhibits __
BDNF
What are symptoms of serotonin syndrome?
confusion, agitation, hypomania
sweating, hypertension, hyperthermia, nausea, diarrhea
tremor, rigidity, herreflexia, restlessness, myoclonus
Which TCA has N and O in its 7 membered ring?
amoxapine
Which TCA has highest selectivity for NE transporter?
maprotiline
Maclobemide is a selective __ MAO-A inhibitor
reversible
Which enantiomer is paroxetine?
3S,4R
In dose-in the Cis inhibits __ and trans inhibits __
5HT reuptake
NE reuptake