Understanding Depression and Antidepressants
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Questions and Answers

What is the elimination half-life of citalopram?

  • 20 hours
  • 35 hours (correct)
  • 50 hours
  • 70 hours
  • Which SSRI has the least effect on the cytochrome P450 system?

  • Escitalopram
  • Sertraline
  • Paroxetine
  • Citalopram (correct)
  • What is the main clinical indication for SSRIs according to the text?

  • Major depressive disorder (correct)
  • Hypertension
  • Schizophrenia
  • Bipolar disorder
  • Which of the following is NOT a third-generation heterocyclic drug?

    <p>Trazodone</p> Signup and view all the answers

    What is the half-life of venlafaxine's active metabolite, O-desmethyl-venlafaxine?

    <p>11 hours</p> Signup and view all the answers

    Why is dosing twice a day necessary for venlafaxine?

    <p>To maintain therapeutic levels in the body</p> Signup and view all the answers

    Which of the following is an emotional symptom of depression?

    <p>Loss of libido</p> Signup and view all the answers

    Which brain structure is primarily associated with anxiety in depression?

    <p>Limbic structures</p> Signup and view all the answers

    What is anhedonia most closely associated with in the brain?

    <p>Cortex</p> Signup and view all the answers

    Which of the following is NOT a biological symptom of depression mentioned in the text?

    <p>Retardation of thought &amp; action</p> Signup and view all the answers

    According to the DSM-V-TR criteria for a major depressive episode, how many symptoms must be present during a 2-week period?

    <p>5</p> Signup and view all the answers

    Which of the following is a key feature of depression according to the text?

    <p>Loss of interest or pleasure in activities</p> Signup and view all the answers

    What is a potential adverse effect of the medication discussed?

    <p>Increased blood pressure</p> Signup and view all the answers

    What can occur if a MAOI is coadministered with an SSRI or venlafaxine?

    <p>Serotonin syndrome</p> Signup and view all the answers

    What is a symptom of serotonin syndrome?

    <p>Confusion</p> Signup and view all the answers

    How long should one wait after stopping an SSRI before starting a MAOI?

    <p>At least 5 half-lives</p> Signup and view all the answers

    What treatment approach is recommended for serotonin syndrome?

    <p>Discontinue serotoninergic agents and treat symptoms</p> Signup and view all the answers

    Why is a drug-free period of 2 weeks required when switching from a MAOI to another antidepressant?

    <p>To allow for the regeneration of tissue MAO</p> Signup and view all the answers

    Which antidepressant is known to have minimal effects on the cytochrome P450 enzyme system?

    <p>Venlafaxine</p> Signup and view all the answers

    Which antidepressant is associated with modest increases in blood pressure in approximately 5% of patients at higher doses?

    <p>Venlafaxine</p> Signup and view all the answers

    Which antidepressant does not cause sexual side effects like the SSRIs and venlafaxine?

    <p>Bupropion</p> Signup and view all the answers

    Which antidepressant is tightly bound to protein and undergoes metabolism via CYP2D6 and CYP1A2?

    <p>Duloxetine</p> Signup and view all the answers

    Which antidepressant has been associated with a risk of seizures in 0.4% of patients at high doses?

    <p>Bupropion</p> Signup and view all the answers

    Which antidepressant formulation is contraindicated in patients with a history of seizures?

    <p>Bupropion</p> Signup and view all the answers

    Which medication inhibits the cytochrome P450 2D6 isoenzyme?

    <p>Bupropion</p> Signup and view all the answers

    What receptor does mirtazapine block?

    <p>5-HT3</p> Signup and view all the answers

    Which medication is relatively free of antimuscarinic side effects?

    <p>Trazodone</p> Signup and view all the answers

    What is a common side effect of trazodone?

    <p>Priapism</p> Signup and view all the answers

    Which medication causes weight gain as a common side effect?

    <p>Mirtazapine</p> Signup and view all the answers

    What mechanism of action does bupropion have on the cytochrome P450 2D6 isoenzyme?

    <p>Inhibits it</p> Signup and view all the answers

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