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+ Schizophrenia Presentation for PHO Dr Verity Humberstone.

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Presentation on theme: "+ Schizophrenia Presentation for PHO Dr Verity Humberstone."— Presentation transcript:

1 + Schizophrenia Presentation for PHO Dr Verity Humberstone

2 + Overview Why prioritize schizophrenia? Diagnosing Schizophrenia Treatment of schizophrenia Atypical Antipsychotic – metabolic monitoring Clozapine

3 + Questions Which is the most common diagnosis in acute and forensic hospitals? Which is the most common diagnosis for people requiring residential support? Are people with schizophrenia at a greater risk of victimisation? Are people with schizophrenia at a greater risk of perpetrating violence?

4 + Maori and Schizophrenia The psychiatric report 1986 – Maori 10-12% population 67% special patient admissions Te Puni Kokiri - 1996 rates of admission for schizophrenia 2-3 times greater for Maori than Non Maori / Pacific. Greater first presentations and readmissions. Hauora: Maori standards of Health IV has identified that between 2003 and 2005 Maori were over 3.5 times more likely to be hospitalized for schizophrenia than non Maori. Maori men had a hospitalization rate for schizophrenia of 416.7 per 100,000 compared with 222.4 for Maori women, 119.7 for non-Maori men and 62.3 per 100,000 for non- Maori women

5 + Prevalence Schizophrenia Kake et al Maori Men1.27% Maori Women0.7% Non Maori men0.41% Non Maori Women0.24%

6 + Diagnosing schizophrenia

7 + Bleuler “ Contrary to the general opinion, the concept of schizophrenia is as precise as is possible for any fact found in nature. There is no room for it to be confused with any other mental disorder”

8 + Review of Clinical features Prodrome Sleep disturbance Depressed mood Social withdrawal Drop off in function e.g. work / study Irritable / Oversensitive Odd beliefs / Odd Behavior Suicidal

9 + Positive Symptoms of Schizophrenia Delusions Hallucinations Formal Thought Disorder Bizarre Behavior

10 + Delusions Bizarre Non Bizarre Delusions of reference Delusions of mind reading Jealous delusions Persecutory delusions Grandiose delusions Delusions of control Religious delusions Nihilistic delusions Somatic delusions Erotomanic delusions

11 + Negative Symptoms of Schizophrenia Attention Alogia Avolition - Apathy Anhedonia Asociality Affective Disturbance

12 + Cognitive Symptoms of Schizophrenia Verbal memory and learning Executive function Attention Spatial memory

13 + Classification

14 + Types of schizophrenia Delusional disorder Paranoid schizophrenia Undifferentiated schizophrenia Disorganized schizophrenia Catatonic schizophrenia Schizotypal personality Schizoaffective disorder (controversial)

15 + Clarify Diagnosis If people have delusions, thought disorder and hallucinations with a euthymic or normal mood the diagnosis is schizophrenia rather than a mood disorder Look at longitudinal history Look for medical conditions / drug and alcohol

16 + Diagnostic Confusion Where schizophrenia is diagnosed as bipolar affective disorder Where schizophrenia is diagnosed as a personality disorder Where schizophrenia is diagnosed as a substance induced psychosis

17 + Schizophrenia diagnosed as Bipolar Affective Disorder Grandiose delusions, sleep disturbance and elevated mood are often attributed to a manic episode from cross sectional rather than longitudinal analysis Key distinguishing factor is in schizophrenia the arousal and mood disturbance resolve more quickly than hallucinations, delusions or thought disorder

18 + Schizophrenia diagnosed as Bipolar Affective Disorder Key features relate to affect and function Analysing cases all have combinations of mood stabilisers and antipsychotics inevitably stabilised on clozapine – controversial usefulness of mood stabilisers

19 + Mood changes

20 + Schizophrenia treated as depression Mood changes are very common in schizophrenia and particularly a dysphoric, tormented, anxious mood with sleep disturbance If there are hallucinations and delusions or any other psychotic symptom treat with antipsychotic medication SSRIs will be useless

21 + Schizophrenia Diagnosed as Substance induced psychosis Significant substance abuse is common – ending up with recurrent psychotic mental health admissions is very uncommon Psychosis with substances does not explain disturbances in affect, persistent disorganisation or cognitive dysfunction Controversy regarding severe prolonged amphetamine use and paranoid schizophrenia

22 + Marijuana Heavy marijuana use prior to age 18 years in prospective studies increases risk of developing schizophrenia by 6-7 times. NZ Dunedin study 10.3% those using marijuana at age 15 years had schizophrenia by 26 years cf 3% controls

23 + Schizophrenia diagnosed as personality disorder A totally normal social history is not compatible with the diagnosis of personality disorder Schizophrenia typically has a pattern of a deteriorating social history although this can be complex with early onset schizophrenia

24 +

25 + Schizophrenia diagnosed as Borderline Disorder Distracted by extreme behaviours that evoke powerful emotions within staff Often an underlying hostility and wish to reject the patient Behavioural disturbances are a direct manifestation of the psychotic process often the underlying exploration of the causes of behaviour are inadequate and the patient’s explanation is accepted at face value

26 + Schizophrenia diagnosed as Borderline Disorder Often recurrent self harm is equated with borderline disorder when it can be part of a psychotic manifestation either directly in response to undisclosed schizophrenia or as a coping strategy in people with a limited degree of psychological maturity or propensity to externalising behaviours

27 + Schizophrenia diagnosed as Antisocial Personality Disorder Schizophrenia can present through contact with the criminal justice system Behavioural disturbance in the forms of violence or law breaking can be directly attributable to psychotic symptoms or a secondary manifestation e.g. paranoia and disorganisation leading to homelessness and trespass / burglary

28 + Schizophrenia diagnosed as Antisocial Personality Disorder Two important patterns to distinguish 1. Absence of conduct disorder and sudden change to criminality and convictions later in life 2. Premorbid conduct disorder then change in escalating pattern of offending or nature of offending

29 + Schizophrenia diagnosed as Antisocial Personality Disorder Key feature is a careful analysis of causes of offending or violent behaviour Does it make sense? What are the motivations? What are the observations of staff within the criminal justice system ?

30 + Interviewing Issues Look and Observe Understand the different language that people have for perceptual experiences – look for dimensionality and affective investment “Do you hear voices inside / outside head” – limiting and simplistic

31 + Interviewing Issues For guarded patient use other strategies e.g. proverb analysis with cognitive assessment “People in glass houses should not throw stones” Assess negative and cognitive features Be aware of the tendency to normalise psychosis like completion illusions

32 + Being guarded

33 + Functional Issues Developmental arrest Housing history Employment pattern – however factor in socioeconomic deprivation Relationships – shrinking network Change in habitual behaviour

34 + Functional impact

35 + Family Interview Changes in sleep, motivation, self care Times that they did not make sense Did you ever hear them talk to themselves and what did they say about it Anger

36 + Management 1. Engagement 2. Safety 3. Clarify the Diagnosis 4. Biological Management 5. Psychological Management 6. Social and Family 7. Rehabilitation

37 + Safety Assess risk of killing or harming themselves Assess risk of killing or harming others Assess sexual risk towards others or of being exploited / abused / pregnant Assess risk from coexistent medical condition Assess risk of homelessness Assess risk of financially exploited

38 + Safety Assess risk of very poor self care e.g. ability to obtain food, manage money Assess risk from comorbid substance abuse Assess risk of treatment disengagement Assess risk from certain symptoms: Command Hallucinations, Delusions of control, Jealous delusions, Persecutory delusions

39 + Question Which features of the mental state are important when assessing risk?

40 + Biological Management Atypical Antipsychotics vs typical First line treatment can include risperidone, aripiprazole, amisulpride, ziprasidone, quetiapine, olanzapine Olanzapine has a higher risk of weight gain and metabolic syndrome than the other first line agents and should be only used after prior treatment intolerance and with caution Clozapine only effective treatment for treatment resistant schizophrenia Depot antipsychotics require- three months to steady state

41 + Antipsychotic prescribing AntipsychoticDose range Risperidone2-6mg Aripiprazole10-30mg Olanzapine10-30mg Quetiapine300mg – 900mg Ziprasidone Amisulpride 40mg bd – 80mg bd 200mg – 800mg

42 + Risperidone Risperidone – generally first line, can have akathisea, EPSE, or high prolactin. Available in depot form two weekly (paliperidone monthly)

43 + Aripiprazole No weight gain Can be activating, can have akathisea 1.5 : 1 potency to olanzapine

44 + Olanzapine Risks weight gain Metabolic syndrome Recent depot preparation – post injection syndrome

45 + Quetiapine Frequently used low dose range off label conditions Doses required for antipsychotic effect may be too sedating

46 + Ziprasidone Needs to be taken twice daily Needs to be taken with food Low metabolic effects

47 + Amisulpride Low does beneficial effects negative symptoms Higher doses sedating, EPSE

48 + Clozapine Clozapine has revolutionized the treatment of schizophrenia and is simply more effective than other antipsychotic medication for persistent and severe psychotic illness.

49 + Clozapine

50 + Treatment resistant schizophrenia Two different antipsychotic agents taken at right doses for sufficient time still not associated with improvement in positive psychotic symptoms Repeated admissions, suicide attempts, assaults, homelessness, imprisonment, severe coexisting substance abuse

51 + Clozapine outcomes 33% significant improvement in six week, 70% one year Reduction in hospitalization, suicide, imprisonment, increased housing stability, drug use

52 + Clozapine side effects Constipation Hypersalivation Reflux Sedation Weight gain / metabolic effects

53 + Clozapine – Serious but rare Neutropenia – agranulocytosis – requires weekly FBC for first 18 weeks and after every 28 days Myocarditis Cardiomyopathy Lowering seizure threshold – myoclonic jerks Toxic megacolon Death with high alcohol consumption

54 + Clozapine initiation Gradual dose titration – cross tapering Fortnightly BP Temp Pulse Wide dose range Levels useful for adherence but not for therapeutic window Clozapine re titration after missing three days Clozapine and alcohol

55 +

56 + Common side effects of atypical antipsychotic medication Insulin resistance Weight gain Dyslipidemia Elevation in prolactin

57 + Differing risk profiles MedicationWeight gain Diabetes risk Poor Lipid profile Elevated prolactin Olanzapine++++++0 (temporary) Clozapine+++++0 Risperidone++DD Quetiapine++DD0 Aripiprazole / Ziprasidone 0/+ 0 D = discrepant results

58 + Insulin resistance Antipsychotic medication causes changes in glucose homeostasis Other risk factors Aging Family history of diabetes Ethnicity – Maori Cigarette smoking Physical inactivity Diagnosis of schizophrenia itself

59 + Weight Gain with antipsychotic medication Combination of Decreased physical activity – sedation, negative symptoms, poverty, demoralization Alteration of the hunger / satiety centers mediated by hormone leptin Blocking of certain receptors

60 + Dyslipidemia Generally consistent with gain in weight Other risks family history Diet

61 + Prolactin levels Antipsychotics especially risperidone and first generation antipsychotics (e.g. haloperidol, clopixol) can be associated with increased prolactin Dopamine inhibits prolactin increase so antipsychotics blocking dopamine lead to increase prolactin

62 + Side effects of increased prolactin In Females Galactorrhoea Irregular or no menstruation Infertility Sexual dysfunction In Males Galactorrhoea Gynaecomastia Impotence, reduced libido, erectile dysfunction

63 + Side effects of increased prolactin In both men and women long term increase in prolactin leads to risk of osteoporosis from effects on sex steroid production Be aware of other causes of increased prolactin such as a brain tumor

64 +

65 + Monitoring Program Now core practice in all DHBs in New Zealand with National guidelines Role of all mental health workers to be aware and participate All doctors and key workers are expected to be able to record height, weight, waist circumference where appropriate and calculate a BMI If antipsychotics are changed the monitoring program should start again

66 + Baseline Monitoring At start of antipsychotic prescribing – or as close as possible  Document personal and family history of dyslipidemia, hypertension, smoking, heart disease, history of syncope or QT abnormalities  Sudden death in relative under 40 years  Galactorrhoea, menstrual problems, sexual dysfunction, Gynaecomastia

67 + Baseline monitoring Height and weight to calculate BMI HbA1C Fasting lipids Full bloods count Electrolyte and creatinine Liver function

68 + Monthly for first three months Weight calculate BMI Waist circumference BP

69 + Three months after starting antipsychotic medication Repeat blood tests HbA1C Fasting lipids Liver function tests

70 + Annually Height and weight to calculate BMI HbA1C Fasting lipids Full bloods count Electrolyte and creatinine Liver function

71 + ECGs It is good practice to have an ECG before prescribing any antipsychotic This is indicated for Known heart disease History of syncope Family history of sudden death under 40 years Congenital long QT Co administration of any QT prolonging medication

72 + ECG For patients on polypharmacy of antipsychotic medication or high doses of antipsychotic medication an ECG should be performed 6 monthly Clozapine clients require a yearly ECG

73 + Information for consumers Prior to starting antipsychotic medication (or when over acute phase) discuss with consumer and family the possible side effects and need for awareness of diet and exercise Written information and assistance with practical support such as Green prescription, local lifestyle groups should be given

74 + Prevention better than weight loss It is easier to prevent weight gain than deal with needing to loose weight. Where possible use antipsychotic medication that has a lower risk of weight gain – remember clozapine is the only antipsychotic that is more effective than the others at reducing psychosis Most of the weight gain is in the first three months – critical time for follow up

75 + Triggers for Intervention MeasureTriggerInterventions BMI Waist circumference >25 Women >88cm Men > 102cm Discuss risks, explore diet and exercise program Look at changing antipsychotic Offer smoking cessation help

76 + Triggers for Intervention MeasureTriggerIntervention HbA1c>40 and less than 50Repeat three months HbA1C>50 two readings means diabetes Consult GP Diet and exercise program Consider antipsychotic switch Offer help with smoking cessation Fasting lipidsTriglycerides >2 Total cholesterol : HDL > 4.5 Consult GP Diet and exercise program Consider antipsychotic switch Offer help smoking cessation

77 + Psychological Management Therapeutic Alliance and Recovery focus Psychoeducation Early Warning Signs Triggers and Stress Substance Abuse Cognitive Behavioral therapy for persistent symptoms of schizophrenia

78 + Rehabilitation Assessment must involve an understanding of: Impairment - symptoms Disability - functional life domains Handicap - social roles Skill retrieval, Skill development, Community Integration

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