Bipolar disorder
Bipolar disorder ( 30 Questions)
A (They have the same mechanisms of action as SSRIs) is incorrect. Atypical antidepressants have different mechanisms of action compared to SSRIs. While SSRIs primarily target serotonin reuptake inhibition, atypical antidepressants like bupropion and mirtazapine have unique mechanisms involving other neurotransmitters.
Bupropion, an atypical antidepressant, indeed blocks the reuptake of both dopamine and norepinephrine. Unlike many other antidepressants, which primarily target serotonin, bupropion's mechanism of action involves increasing the levels of dopamine and norepinephrine in the brain.
Mirtazapine, another atypical antidepressant, blocks serotonin and histamine receptors. By blocking histamine receptors, mirtazapine often leads to drowsiness, which can be a side effect of this medication.
D (Trazodone blocks the reuptake of serotonin only) is incorrect. Trazodone is an atypical antidepressant with a complex mechanism of action. It is an antagonist at certain serotonin receptors and inhibits serotonin reuptake, but it also has antagonistic effects on histamine receptors, which contribute to its sedative properties.
Atypical antidepressants are associated with common side effects such as dry mouth and blurred vision. These side effects are often due to their impact on various neurotransmitter systems, including histamine and acetylcholine. Choices A and D are incorrect because they misrepresent the mechanisms of atypical antidepressants.
Choice B rationale:
Bupropion, an atypical antidepressant, indeed blocks the reuptake of both dopamine and norepinephrine. Unlike many other antidepressants, which primarily target serotonin, bupropion's mechanism of action involves increasing the levels of dopamine and norepinephrine in the brain.
Choice C rationale:
Mirtazapine, another atypical antidepressant, blocks serotonin and histamine receptors. By blocking histamine receptors, mirtazapine often leads to drowsiness, which can be a side effect of this medication.
Choice E rationale:
Atypical antidepressants are associated with common side effects such as dry mouth and blurred vision. These side effects are often due to their impact on various neurotransmitter systems, including histamine and acetylcholine. Choices A and D are incorrect because they misrepresent the mechanisms of atypical antidepressants.
Choice A rationale:
Choice A (They have the same mechanisms of action as SSRIs) is incorrect. Atypical antidepressants have different mechanisms of action compared to SSRIs. While SSRIs primarily target serotonin reuptake inhibition, atypical antidepressants like bupropion and mirtazapine have unique mechanisms involving other neurotransmitters.
Choice D rationale:
Choice D (Trazodone blocks the reuptake of serotonin only) is incorrect. Trazodone is an atypical antidepressant with a complex mechanism of action. It is an antagonist at certain serotonin receptors and inhibits serotonin reuptake, but it also has antagonistic effects on histamine receptors, which contribute to its sedative properties.