Nokea
Which neurotransmitter is primarily implicated in the development of schizophrenia?
- A. Serotonin
- B. Norepinephrine
- C. Dopamine
- D. Acetylcholine
Correct Answer: C
Rationale: The correct answer is dopamine. Dopamine dysregulation is a key factor in the development of schizophrenia. Excess dopamine activity in certain brain regions is associated with positive symptoms of schizophrenia, such as hallucinations and delusions. Dopaminergic medications that reduce dopamine levels are often used to manage these symptoms, further supporting the role of dopamine in schizophrenia. Serotonin (Choice A) is more commonly associated with mood regulation and is implicated in depression and anxiety disorders. Norepinephrine (Choice B) is involved in the body's 'fight or flight' response and is linked to conditions like anxiety and PTSD. Acetylcholine (Choice D) plays a role in muscle movement and memory but is not primarily implicated in schizophrenia.
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A patient with social anxiety disorder is prescribed propranolol. The nurse understands that this medication is used primarily to:
- A. Reduce anxiety symptoms
- B. Improve mood
- C. Increase energy levels
- D. Enhance social interactions
Correct Answer: A
Rationale: The correct answer is A: Reduce anxiety symptoms. Propranolol, a beta-blocker, is primarily used to reduce physical symptoms of anxiety, such as rapid heartbeat and trembling, in patients with social anxiety disorder. It does not directly affect mood, energy levels, or social interactions. Choice B is incorrect because propranolol does not target mood improvement. Choice C is incorrect because propranolol does not aim to increase energy levels. Choice D is incorrect because propranolol does not enhance social interactions; its primary role is in reducing physical symptoms of anxiety.
Which of the following is a common side effect of antipsychotic medications?
- A. Hyperactivity
- B. Weight loss
- C. Extrapyramidal symptoms
- D. Insomnia
Correct Answer: C
Rationale: Extrapyramidal symptoms, such as tremors and rigidity, are frequently observed as side effects of antipsychotic medications. These symptoms result from the medications' influence on dopamine receptors in the brain. Choice A, hyperactivity, is not a typical side effect of antipsychotic medications. Choice B, weight loss, is less common compared to weight gain. Choice D, insomnia, though possible, is not as prevalent as extrapyramidal symptoms in individuals taking antipsychotic medications.
In a patient with bipolar disorder, which symptom would indicate a manic episode?
- A. Excessive sleeping
- B. Low self-esteem
- C. Decreased need for sleep
- D. Anhedonia
Correct Answer: C
Rationale: The correct answer is C: Decreased need for sleep. A decreased need for sleep is a hallmark symptom of a manic episode in bipolar disorder. During manic episodes, individuals may experience significantly reduced sleep without feeling tired, which can lead to increased energy levels, impulsivity, and other manic symptoms. Excessive sleeping (choice A) is more indicative of depression rather than mania. Low self-esteem (choice B) and anhedonia (choice D) are also more commonly associated with depressive episodes rather than manic episodes in bipolar disorder.
When assessing a patient with schizophrenia who exhibits flat affect and social withdrawal, these symptoms are classified as:
- A. Positive symptoms
- B. Negative symptoms
- C. Cognitive symptoms
- D. Mood symptoms
Correct Answer: B
Rationale: Flat affect and social withdrawal are characteristic of negative symptoms in schizophrenia. Negative symptoms involve disruptions to normal emotions and behaviors, such as reduced emotional expression (flat affect) and social withdrawal. These symptoms reflect a decrease or absence of normal functions. Positive symptoms, on the other hand, involve the presence of abnormal behaviors or experiences, such as hallucinations and delusions, which are added to a person's experiences. Cognitive symptoms relate to difficulties with thinking, memory, and processing information, impacting cognition. Mood symptoms involve disturbances in mood regulation, which is distinct from the flat affect seen in negative symptoms.
Which of the following is a common side effect of benzodiazepines prescribed for anxiety?
- A. Insomnia
- B. Weight gain
- C. Drowsiness
- D. Increased appetite
Correct Answer: C
Rationale: Drowsiness is a common side effect of benzodiazepines prescribed for anxiety. Benzodiazepines work by depressing the central nervous system, which can lead to drowsiness as a side effect. This sedative effect is often desired in the treatment of anxiety disorders, but individuals should be cautious when engaging in activities that require alertness, such as driving, while taking these medications. Insomnia, weight gain, and increased appetite are not typically associated with benzodiazepines; instead, drowsiness and sedation are more common side effects.