Correct Answer: B

Rationale: Lithium is a well-established mood stabilizer commonly prescribed for the treatment of bipolar disorder. It helps to control manic episodes, stabilize mood swings, and reduce the risk of relapse in individuals with this condition. Sertraline is an antidepressant commonly used for treating depression, while Clozapine and Haloperidol are antipsychotic medications used for different psychiatric conditions. Therefore, the correct answer is B because it is specifically indicated and effective for bipolar disorder.

Correct Answer: B

Rationale: In managing a patient with OCD engaging in ritualistic behaviors like handwashing, the nurse's best initial response is to allow the ritual but set limits on the duration. This approach helps in managing the behavior while gradually working towards reducing its frequency. Interrupting the ritual abruptly may cause distress to the patient, ignoring the behavior may reinforce it, and encouraging the patient to stop the ritual without setting limits may not be as effective in the initial stage of intervention.

Correct Answer: B

Rationale: Anhedonia, the inability to feel pleasure in activities that were once enjoyable, is a hallmark symptom of major depressive disorder. Patients with major depressive disorder often experience a pervasive feeling of emptiness and loss of interest in activities they used to find pleasurable. Euphoria, increased energy, and racing thoughts are more commonly associated with conditions like bipolar disorder rather than major depressive disorder.

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.

Correct Answer: A

Rationale: Memory loss, especially short-term memory loss, is a common side effect associated with electroconvulsive therapy (ECT). During ECT treatment, the electrical currents passed through the brain can disrupt short-term memory formation. This side effect is usually temporary, but patients should be closely monitored for any changes in memory function during and after the treatment. Choices B, C, and D are incorrect because they are not commonly associated with ECT. Hypertension, weight gain, and hyperglycemia are not typically observed as side effects of ECT.