Psych Meds Flashcards
1. Mechanism of action of: Fluoxetine Sertraline Citalopram Paroxetine Fluvoxamine Escitalopram
SSRI
List 5 common side effects of SSRI’s.
What psych disorder can SSRI’s make worse?
Nausea, diarrhea Sexual dysfunction Headache Anxiety Bleeding risk- dysfunction of platelets
Can worsen mania
Fluoxetine
- Half-life (long or short)
- Inducer or Inhibitor
- Longest- therefore less discontinuation syndrome and need more time (3-4 weeks) before starting MAOi
- Inhibitor (increases TCA’s, warfarin, CBZ, PHT, thioridazine, buproprion
Fluvoxamine
- Inducer or Inhibitor
- Marketed for what disorder specifically
- Half-life (long or short)
- Inhibitor (increases warfarin levels)
- OCD
- Short (higher risk of serotonin synd)
Paroxetine
- Inducer or Inhibitor
- Half-life (long or short)
- Inhibitor (increases warfarin levels)
2. Short (higher risk of serotonin synd)
Sertraline
- Inducer or Inhibitor
- Can cause what false positive on drug tox screen?
- What is an additional mechanism of action?
- Inhibitor (sometimes inhibits warfarin metabolism)
- Benzo’s
- DA transporter inhibitor
Citalopram
- Specific side effect warning at high doses?
- QT prolongation- irregular cardiac rhythms
Serotonin syndrome:
- List the electrolyte and lab abnormalities.
- List the clinical symptoms (different from NMS).
- What if a person has repeated episodes of serotonin-like syndromes?
1. Hyponatremia hypocalcemia hypomagnesium elevated LFTs elevated CK (rhabdo)- most serious complication leukocytosis
- Shivering, myoclonus
- Order CT Chest- may be lung cancer.
- Mechanism of action of:
Venlafaxine
Desvenlafaxine
Duloxetine
SNRI’s (5HT reuptake inhib and NE reuptake inhib)
Venlafaxine
- Can cause what false positive on drug tox screen?
- Most common side effect?
- PCP
2. HTN- do not use with anticoagulation or acute angle glaucoma
Trazodone
- Can cause what false positive on drug tox screen?
- Mechanism of action
- Amphetamine
- 5HT reuptake inhib
Presynaptic 5HT antagonist
Postsynaptic 5HT agonist at high dose
Buproprion
- Mechanism of action
- Also used for what?
- Major side effect concern
- What side effect does it NOT cause that other anti-depressants do?
- Increases NE and DA
- Smoking cessation
- Lowers seizure threshold (especially with eating disorder)
- Sexual dysfunction
Mirtazapine
- Mechanism of action
- Increases 5HT and NE
Post-synaptic 5HT1 agonist
Presynaptic 5HT 2 and 3 antagonist
Presynaptic alpha antagonist
List 3 major psych meds (1 med and 2 categories) that cause weight gain.
Mirtazapine
TCA’s
MAOi’s
Side effects of ECT?
Temporary anterograde and retrograde amnesia
Anethesia risks
Lithium
- List side effects
- List 2 additional side effects with toxic doses
1. Tremor Ataxia Acne Weight gain Polyjria Hypokalemia Hyperparathyroidism and hypercalcemia
- QT prolong
Renal failure- May need dialysis
Which 2 antipsychotics are lowest risk of worsening PD?
Clozapine and quetiapine
1a. List typical antipsychotics- low potency
1b. Mechanism of action.
2a. List typical antipsychotics- high potency
2b. Mechanism of action
1a. chlorpromazine and thioridazine
1b. DA blockade, anti-ACh, anti-NE, and anti-H1 (more side effects but less EPS)
2a. Haloperidol, thiothixene, fluphenazine
2b. Mainly DA blockade
Typical antipsychotics
- Which one safest in pregnancy?
- Which one least risk of metabolic syndrome?
- What is the black box warning?
- Haloperidol
- Haloperidol
- Increased mortality in elderly with dementia related psychosis
- List atypical antipsychotics
2. Mechanism of action
1. Clozapine Olanzapine Quetiapine Risperidone Ziprasidone Aripiprazole Paliperidone Lurasidone
- 5HT>DA blockade and D4>D2 blockade
Clozapine
- Category of drug
- Side effects
- What condition does it specifically decreases suicide attempts?
- What side effects does it NOT have?
- Atypical antipsychotic
2. Greatest risk of seizures Agranulocytosis Neutropenia Severe anti-ACh and Anti-H1 side effects- sedation and drooling (most common) Eosinophilic colitis
- Schizophrenia
- EPS and tardive dyskinesia
Olanzapine
- Category of drug
- Side effects
- Atypical antipsychotic
- Massive weight gain
Sedation
Quetiapine
- Category of drug
- Side effects
- Atypical antipsychotic
2. Weight gain, sedation (anti-H1), hypotension (alpha blockade)
Risperidone
- Category of drug
- Mechanism- how is it different from other atypicals?
- Side effects
- Atypical antipsychotic
- Highest D2/ 5HT blockade ratio
- Dose related EPS
Hyperprolactinemia- gynecomastia
Decreased libido
Ortho hypotension
Aripiprazole
- Category of drug
- Mechanism
- Atypical antipsychotic
2. partial agonist, high affinity at D2 and 5HT receptor
Ziprasidone
- Category of drug
- Side effects
- Atypical antipsychotic
- Prolong QT the most
EPS
Lurasidone
- Category of drug
- Mechanism
- List 3 meds that increase Lurasidone.
- Atypical antipsychotic
- Antagonist at D2 and 5HT
Partial agonist at 5HT1A - Ketoconazole, rifampin, and diltiazem
What do you use to treat EPS: acute dystonia?
Benadryl or benztropine
What do you use to treat EPS: akathisia?
Propranolol, benzo, or anticholinergic
What do you use to treat EPS: parkinsonism?
Reduce antipsychotic
Add anticholinergic
Switch to more “atypical” drug
NMS
- Mechanism of pathology
- Symptoms
- Treatment
- DA blockade- temp is reset in hypothalamus and EPS
2. AMS Rigid Fever Tremor Autonomic instability Leukocytosis Elevated CK
- Stop antipsychotic, cooling and hydration, bromocriptine, dantrolene
Bromocriptine mechanism
DA agonist
Dantrolene mechanism
Blocks Ca release (muscle relaxant)
Buspirone mechanism of action
Partial agonist at 5HT1A
Benzo mechanism of action
GABA-A agonist
Barbituate mechanism of action
GABA-A agonist
Flumazenil
- Mechanism
- What is it used for
- Benzo antagonist
2. Benzo overdose
Naloxone
- Mechanism
- What is it used for
- Opioid antagonist
2. Opioid overdose
Naltrexone
- Mechanism
- What is it used for
- Competative antagonist at opioid receptor
2. maintain drug-free state in opioid dependence
Methadone
- Mechanism
- What is it used for
- Opioid agonist
2. Replace Heroin
Buprenorphine
- Mechanism
- What is it used for
- Partial mu-opioid agonist
2. Alternative to methadone