An atypical antipsychotic is prescribed for a patient with psychosis. The nurse understands that this category of medications includes which drugs? Select all that apply.

Antipsychotic medications, such as olanzapine, are used to treat psychotic disorders including schizophrenia and bipolar disorder by modulating dopamine and serotonin neurotransmission. Nurses must be able to identify antipsychotic agents to monitor for therapeutic effects, prevent adverse reactions, and provide accurate patient teaching regarding side effects and safety precautions.

Rationale for correct answer:

C. Olanzapine (Zyprexa)
This is an atypical antipsychotic that targets both dopamine and serotonin receptors, reducing positive symptoms like hallucinations and delusions, as well as some negative symptoms such as social withdrawal. Monitoring for weight gain, metabolic syndrome, and sedation is important during therapy.

Rationale for incorrect answer:

A. Lithium carbonate
Lithium is a mood stabilizer, primarily used in bipolar disorder, and does not directly treat psychotic symptoms. Its mechanism involves modulating neurotransmission, but it is not classified as an antipsychotic.

B. Sertraline (Zoloft)
Sertraline is a selective serotonin reuptake inhibitor (SSRI) used to treat depression and anxiety disorders. It is not an antipsychotic and does not target dopamine pathways involved in psychosis.

D. Amitriptyline (Elavil)
Amitriptyline is a tricyclic antidepressant used for depression and chronic pain, not for psychotic disorders. It affects norepinephrine and serotonin reuptake, not dopamine pathways.

Take-home points:

• Olanzapine is an atypical antipsychotic used for schizophrenia and bipolar disorder.
• Monitor for metabolic changes, sedation, and weight gain during therapy.
• Be able to differentiate antipsychotics from mood stabilizers and antidepressants for safe patient management.

Chlorpromazine (Thorazine) is a first-generation antipsychotic primarily effective for positive symptoms of schizophrenia, which are those that represent an excess or distortion of normal function. Positive symptoms include hallucinations, delusions, disorganized thinking, and bizarre behavior. Nurses should focus assessments on improvement in these areas to evaluate therapeutic effectiveness.

Rationale for correct answer:

A. Disorganized speech – First-generation antipsychotics help clarify thought processes and reduce incoherent or tangential speech, improving communication and cognitive clarity.

B. Bizarre behavior – Chlorpromazine targets agitation, inappropriate social behavior, and unusual motor activity, helping normalize behavioral patterns.

D. Hallucinations – Positive symptoms like auditory and visual hallucinations are significantly reduced, which improves client safety and insight into reality.

Rationale for incorrect answer:

C. Impaired social interactions – Social withdrawal is a negative symptom and often shows limited improvement with first-generation antipsychotics. These symptoms may require psychosocial interventions or second-generation antipsychotics for better response.

E. Decreased motivation – This is a negative symptom (avolition) that does not respond well to first-generation antipsychotics and often persists despite treatment.

Take-home points:

• First-generation antipsychotics are most effective for positive symptoms of schizophrenia.
• Negative symptoms such as social withdrawal and decreased motivation may persist despite therapy.
• Nursing assessments should focus on reduction in hallucinations, disorganized speech, and bizarre behavior to gauge effectiveness.