antipsychotics Flashcards

1
Q

What is the primary aim of antipsychotic drugs in the treatment of schizophrenia?

A

The primary aim is to reduce the intensity of symptoms, particularly positive symptoms like hallucinations and delusions.

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2
Q

What are the two main types of antipsychotic drugs used to treat schizophrenia?

A

The two main types are typical and atypical antipsychotic drugs.

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3
Q

What symptoms do antipsychotic drugs primarily target in schizophrenia?

A

Antipsychotic drugs primarily target positive symptoms such as hallucinations and delusions.

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4
Q

What is the difference between typical and atypical antipsychotic drugs?

A

Typical antipsychotics are older drugs that primarily block dopamine receptors, while atypical antipsychotics affect both dopamine and serotonin receptors.

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5
Q

How do antipsychotic drugs work to alleviate symptoms of schizophrenia?

A

They work by reducing the intensity of symptoms, particularly by blocking dopamine receptors, which helps to reduce positive symptoms like delusions and hallucinations.

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6
Q

What are D2 receptors and their role in schizophrenia?

A

D2 receptors are a type of dopamine receptor believed to play a key role in the positive symptoms of schizophrenia.

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7
Q

How do typical antipsychotics alleviate positive symptoms of schizophrenia?

A

Typical antipsychotics alleviate positive symptoms of schizophrenia by blocking D2 receptors, reducing dopamine transmission.

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8
Q

Which positive symptoms of schizophrenia are reduced by blocking D2 receptors?

A

Blocking D2 receptors helps reduce positive symptoms such as hallucinations and delusions.

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9
Q

What additional effect does chlorpromazine have aside from blocking dopamine?

A

Chlorpromazine also has a sedative effect, which can help calm agitated patients.

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10
Q

Why is blocking D2 receptors important in treating schizophrenia?

A

Blocking D2 receptors is important in treating schizophrenia because it reduces dopamine transmission, which helps alleviate symptoms like hallucinations and delusions.

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11
Q

Are typical antipsychotics effective in treating both positive and negative symptoms of schizophrenia?

A

Typical antipsychotics are effective in managing positive symptoms but are generally less effective at addressing negative symptoms such as avolition or social withdrawal.

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12
Q

What are some common side effects of typical antipsychotics?

A

Typical antipsychotics are associated with side effects such as extrapyramidal symptoms, including involuntary muscle movements and tremors.

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13
Q

Why are typical antipsychotics less effective for negative symptoms of schizophrenia?

A

Typical antipsychotics primarily target dopamine receptors related to positive symptoms and do not address the brain regions involved in negative symptoms.

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14
Q

How do typical antipsychotics affect D2 receptors in the brain?

A

Typical antipsychotics act extensively on D2 receptors across the brain, which reduces dopamine transmission and alleviates positive symptoms.

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15
Q

What are extrapyramidal symptoms, and why do they occur with typical antipsychotics?

A

Extrapyramidal symptoms are involuntary muscle movements and tremors, which occur because typical antipsychotics block D2 receptors in areas of the brain that control movement.

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16
Q

What is the main advantage of atypical antipsychotics over typical antipsychotics?

A

Atypical antipsychotics carry a lower risk of extrapyramidal side effects, which are commonly associated with typical antipsychotics.

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17
Q

How do atypical antipsychotics differ in their effect on D2 receptors compared to typical antipsychotics?

A

Atypical antipsychotics block D2 receptors more selectively and temporarily, which reduces the risk of severe side effects.

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18
Q

Give two examples of atypical antipsychotics.

A

Examples of atypical antipsychotics include clozapine and risperidone.

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19
Q

What is the mechanism by which atypical antipsychotics reduce side effects?

A

Atypical antipsychotics temporarily bind to D2 receptors and then rapidly dissociate, allowing normal dopamine transmission to occur, reducing side effects.

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20
Q

When were atypical antipsychotics developed and why?

A

Atypical antipsychotics were developed in the 1970s to improve upon the limitations of typical antipsychotics, particularly to reduce side effects like extrapyramidal symptoms.

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21
Q

How do atypical antipsychotics differ from typical antipsychotics in terms of neurotransmitter targets?

A

In addition to targeting dopamine, atypical antipsychotics also act on serotonin and glutamate receptors, helping to improve both positive and negative symptoms.

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22
Q

How do atypical antipsychotics help with negative symptoms of schizophrenia?

A

Atypical antipsychotics help address negative symptoms like social withdrawal, emotional flattening, and cognitive impairments by acting on serotonin and glutamate receptors.

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23
Q

Which atypical antipsychotic is particularly effective for patients who have not responded to other treatments?

A

Clozapine is particularly effective for patients who have not responded to other treatments and is known to improve mood and cognitive functioning.

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24
Q

Why is clozapine suitable for individuals at risk of suicide?

A

Clozapine is suitable for individuals at risk of suicide because it has been shown to improve mood and cognitive functioning.

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25
What is the advantage of atypical antipsychotics acting on both dopamine and other neurotransmitters?
Atypical antipsychotics' action on both dopamine, serotonin, and glutamate receptors allows for a more comprehensive treatment of schizophrenia, addressing both positive and negative symptoms.
26
How do atypical antipsychotics differ from typical antipsychotics in terms of side effects?
Atypical antipsychotics carry a lower risk of extrapyramidal side effects due to the rapid dissociation from D2 receptors.
27
What receptors do typical antipsychotics block?
Typical antipsychotics primarily block D2 dopamine receptors.
28
What receptors do atypical antipsychotics block?
Atypical antipsychotics block both D2 dopamine receptors and serotonin receptors, with a higher affinity for serotonin.
29
What did Thornley (2003) find about chlorpromazine's effectiveness?
Thornley (2003) found that chlorpromazine improved overall functioning and reduced symptom severity compared to a placebo.
30
What did Leucht’s study show about relapse rates in schizophrenia?
Leucht’s study showed that 64% of patients on placebo relapsed, while only 27% of patients on antipsychotics relapsed, showing the effectiveness of antipsychotics.
31
How does antipsychotic medication impact symptom severity?
Research evidence supports that antipsychotic medications significantly reduce the severity of symptoms in schizophrenia, improving patient functioning.
32
What is the benefit of antipsychotics in preventing relapse?
Antipsychotics are effective in preventing relapse of schizophrenia symptoms, with fewer patients relapsing when treated with these medications compared to those on a placebo.
33
Why is antipsychotic medication considered a valuable treatment?
Antipsychotic medications are considered a valuable treatment option for managing schizophrenia symptoms, as they help reduce symptom severity and prevent relapse, improving patient outcomes.
34
How effective are typical antipsychotics for positive symptoms?
Typical antipsychotics, like chlorpromazine, are effective at reducing positive symptoms such as hallucinations and delusions.
35
How effective are typical antipsychotics for negative symptoms?
Typical antipsychotics are less effective at treating negative symptoms such as avolition and speech poverty.
36
Which type of antipsychotics is more effective for a broader range of symptoms?
Atypical antipsychotics, such as risperidone, are shown to be more effective across a broader range of symptoms, including both positive and negative symptoms.
37
Who conducted research supporting the effectiveness of atypical antipsychotics for a broader range of symptoms?
Bagnall (2003) found that atypical antipsychotics are more effective across a wider range of schizophrenia symptoms.
38
What does this suggest about atypical antipsychotics?
This suggests that atypical antipsychotics may offer a more comprehensive treatment approach for schizophrenia, addressing both positive and negative symptoms.
39
What did Crossley find about the difference between typical and atypical antipsychotics?
Crossley found no significant difference between typical and atypical antipsychotics in terms of their side effects.
40
What side effects are associated with typical antipsychotics?
Typical antipsychotics are associated with muscle tremors, movement problems, and long-term conditions like tardive dyskinesia.
41
What side effects are linked to atypical antipsychotics?
Atypical antipsychotics can still cause side effects like cardiovascular problems and weight gain, despite posing a lower risk of movement-related side effects.
42
How do side effects impact patient adherence to medication?
Side effects may cause patients to stop taking their medication, increasing the risk of relapse.
43
What does this suggest about the use of antipsychotics?
This highlights the need for clinicians to carefully weigh the benefits against the costs when prescribing antipsychotics to ensure treatment adherence and manage side effects.
44
How did treatment practices change after the introduction of antipsychotic medication?
Antipsychotic medication revolutionised the treatment of schizophrenia by reducing the need for physical restraints and long-term institutionalisation.
45
What were patients often subjected to before the development of antipsychotic drugs?
Before antipsychotic drugs, patients often faced physical restraints and long-term institutionalisation.
46
How have antipsychotic drugs impacted patients' lives?
Antipsychotic drugs have enabled many individuals to manage their symptoms effectively in the community, improving their quality of life.
47
Why are antipsychotic drugs considered transformative in mental health care?
Antipsychotic drugs have significantly improved the management of schizophrenia, allowing individuals to live outside institutional settings and participate more fully in society.
48
What does this highlight about the development of antipsychotics in mental health care?
This demonstrates how the development of antipsychotics has positively transformed mental health care by offering better symptom management and reducing the need for institutional care.
49
What is the 'revolving door' effect in antipsychotic treatment?
The 'revolving door' effect refers to patients improving on medication but relapsing after discontinuing it, leading to repeated hospital admissions.
50
Why is the long-term effectiveness of antipsychotics questioned?
The long-term effectiveness is questioned because some patients experience relapse after stopping medication, which limits the overall benefits.
51
How does the 'revolving door' effect impact patients?
The 'revolving door' effect leads to repeated hospital admissions, which can be disruptive to patients’ lives and treatment stability.
52
What does the 'revolving door' effect suggest about antipsychotic medication?
The 'revolving door' effect suggests that antipsychotic medication alone may not be enough for long-term recovery.
53
What is recommended to improve long-term outcomes for schizophrenia patients?
Combining antipsychotic medication with other interventions, such as therapy or social support, may improve long-term outcomes and reduce relapse.
54
How do antipsychotics compare with alternative treatments?
Antipsychotics are effective for managing symptoms, but alternatives like CBT and family therapy address psychological and social factors that drugs alone may overlook.
55
What benefits do alternative treatments offer over antipsychotics?
Alternative treatments such as CBT and family therapy can reduce symptom severity and improve coping strategies without the side effects associated with antipsychotic medication.
56
How do alternative treatments impact symptom severity?
Alternative treatments like CBT can reduce the severity of symptoms by addressing thought patterns and behaviors, which antipsychotics may not address.
57
Why is a combination of treatments recommended for schizophrenia?
A combination of treatments offers a more comprehensive approach by tackling both the biological and psychological/social aspects of schizophrenia, improving overall care.
58
What are the advantages of using therapies like CBT over antipsychotic drugs?
Therapies like CBT do not come with the side effects that antipsychotics can cause, such as weight gain or movement issues, making them a viable alternative or supplement.
59
What are the economic benefits of antipsychotics?
Antipsychotics reduce hospital admissions and enable patients to live more independently, which lowers the financial burden on healthcare systems.
60
How do antipsychotics improve patients' well-being?
By allowing patients to manage their symptoms effectively, antipsychotics enable individuals to live more independently, improving their quality of life.
61
What is the balance to consider in the cost of antipsychotic treatment?
While antipsychotics reduce hospital admissions, the ongoing costs of medication and monitoring must be balanced against these benefits.
62
How do antipsychotics impact healthcare systems?
Antipsychotics reduce the need for long-term hospital stays, lowering healthcare costs and reducing pressure on healthcare systems.
63
Why is it important to consider both individual and societal impacts when evaluating antipsychotic treatments?
Evaluating antipsychotics requires balancing the personal benefits to patients with the broader economic costs to society, ensuring sustainable treatment strategies.
64
What is a major criticism of antipsychotic medication?
Antipsychotic medication is criticized for potentially reinforcing the belief that something is fundamentally wrong with the individual.
65
How can antipsychotics affect motivation?
Research by Ross and Read suggests that taking antipsychotics can reduce motivation by making individuals feel helpless and out of control of their condition.
66
How do antipsychotics impact psychological well-being?
While antipsychotics reduce symptoms, they may inadvertently worsen psychological well-being by fostering a sense of helplessness and reducing the individual’s engagement with other treatments.
67
Why is a holistic treatment approach important?
A holistic approach, addressing both biological and psychological factors, is crucial to avoid the potential negative impact of antipsychotics on patients' mental and emotional health.
68
How does the reductionist approach of antipsychotics limit treatment?
By focusing solely on symptom reduction, antipsychotics may overlook the complex psychological and social factors that contribute to a patient's condition.