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1.
Bipolar Disord ; 16(5): 455-70, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-24636153

RESUMO

OBJECTIVE: Bipolar disorder is a multifaceted illness and there is often a substantial delay between the first onset of symptoms and diagnosis. Early detection has the potential to curtail illness progression and disorder-associated burden but it requires a clear understanding of the initial bipolar prodrome. This article summarizes the phenomenology of bipolar disorder with an emphasis on the initial prodrome, the evolution of the illness, and the implications for prevention and early intervention. METHODS: A literature review was undertaken using Medline, Web of Science, and a hand search of relevant literature using keywords (e.g., phenomenology, initial or early symptoms, risk factors, and predictors/prediction). Findings from the literature were reviewed and synthesized and have been put into a clinical context. RESULTS: Bipolar disorder is a recurrent, persistent, and disabling illness that typically develops in adolescence or early adulthood. The literature search yielded 28 articles, in which mood lability, nonspecific, non-mood symptoms, and cyclothymic temperament were the most cited prodromal features. CONCLUSIONS: A small number of key prospective studies have provided evidence in support of an initial bipolar prodrome; however, methodological differences across studies have prohibited its clear delineation. It is, therefore, not currently possible to anticipate those who will develop bipolar disorder solely on the basis of early phenomenology. Accurate characterization of the bipolar disorder prodrome through high-quality, prospective research studies with adequate control groups will ultimately facilitate prompt and accurate diagnosis.


Assuntos
Transtorno Bipolar , Intervenção Educacional Precoce , Transtorno Bipolar/diagnóstico , Transtorno Bipolar/fisiopatologia , Transtorno Bipolar/prevenção & controle , Diagnóstico Precoce , Humanos
2.
Aust N Z J Psychiatry ; 48(6): 542-7, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24270311

RESUMO

OBJECTIVE: Diagnosing depression in primary care settings is challenging. Patients are more likely to present with somatic symptoms, and typically with mild depression. Use of assessment scales is variable. In this context, it is uncertain how general practitioners (GPs) determine the severity of depressive illness in clinical practice. The aim of the current paper was to identify which symptoms are used by GPs when diagnosing depression and when determining severity. METHOD: A total of 1760 GPs participated in the RADAR Program, an educational program focusing on the diagnosis and management of clinical depression. GPs identified a maximum of four patients whom they diagnosed with depression and answered questions regarding their diagnostic decision-making process for each patient. RESULTS: Overall, assessment of depression severity was influenced more by somatic symptoms collectively than emotional symptoms. Suicidal thoughts, risk of self-harm, lack of enjoyment and difficulty with activities were amongst the strongest predictors of a diagnosis of severe depression. CONCLUSIONS: The conclusions are threefold: (1) collectively, somatic symptoms are the most important predictors of determining depression severity in primary care; (2) GPs may equate risk of self-harm with suicidal intent; (3) educational initiatives need to focus on key depressive subtypes derived from emotional, somatic and associated symptoms.


Assuntos
Depressão/diagnóstico , Clínicos Gerais/estatística & dados numéricos , Padrões de Prática Médica/estatística & dados numéricos , Atenção Primária à Saúde , Depressão/psicologia , Humanos , Atenção Primária à Saúde/métodos , Atenção Primária à Saúde/estatística & dados numéricos , Comportamento Autodestrutivo/psicologia , Índice de Gravidade de Doença , Ideação Suicida
3.
Bipolar Disord ; 15(5): 559-74, 2013 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-23848394

RESUMO

OBJECTIVES: To review the psychosocial, neuropsychological, and neurobiological evidence regarding suicide and bipolar disorder (BD), to enable the development of an integrated model that facilitates understanding, and to provide a useful framework for future research. METHODS: A two-stage literature review was conducted. First, an electronic literature search was performed using key words (e.g., bipolar disorder, suicide risk, and neuroimaging) and standard databases (e.g., MEDLINE). Second, theoretical suicide models were reviewed, and their evidence base and relevance to BD were evaluated in order to determine a guiding theoretical framework for contextualizing suicide in BD. RESULTS: Although accumulating clinical, cognitive, and neurobiological correlates of suicide have been identified in BD, extant research has been largely atheoretical. The Cry of Pain (CoP) and an adapted version of the model, the Schematic Appraisals Model of Suicide (SAMS), provide a useful schema for examining vulnerability to suicide in BD, by taking into account biopsychosocial determinants of suicidality. In combination, these also provide a model within which the neural correlates of suicide can be integrated. CONCLUSIONS: The proposed Bipolar Suicidality Model (BSM) highlights the psychosocial precursors to suicidality in BD, while recognizing the key role of cognitive deficits and underlying functional neurobiological abnormalities. It usefully integrates our knowledge, and provides a novel perspective that is intended to meaningfully inform future research initiatives, and can lead to a better understanding of suicidality in bipolar disorder. Ultimately, it is hoped that it will facilitate the development of targeted interventions that diminish the risk of suicide in bipolar disorder.


Assuntos
Transtorno Bipolar/psicologia , Encéfalo/patologia , Modelos Psicológicos , Suicídio/psicologia , Transtorno Bipolar/complicações , Transtorno Bipolar/patologia , Transtornos Cognitivos/etiologia , Bases de Dados Factuais/estatística & dados numéricos , Humanos , Transtornos da Memória/etiologia
4.
Aust J Rural Health ; 21(2): 80-9, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23586569

RESUMO

OBJECTIVE: Recent efforts to redress the deficit of rural medical practitioners have considered the problem of recruitment and retention of rural doctors as one of influencing individuals' career choices. Exposure to rural medical environments during basic medical training is one long-standing example of an initiative aimed in this direction and there is some evidence that it is effective. This study sought to determine whether or not various domains of personality are related to medical students' attitude to practising as rural doctors after graduation. DESIGN: The sample comprised 914 students commencing medical studies in Australian universities. They were recruited as part of the Medical Schools Outcomes Database project and indicated intended location of future medical practice. SETTING: Seven Australian basic medical training programs. MAIN OUTCOME MEASURES: All students completed the NEO five-factor index (NEO-FFI) and Adjective Checklist (ACL) personality instruments. RESULTS: A preference for a rural practice location was associated with a combination of six domains of personality. The probability of rural preference was greater with higher scores on openness to experience, agreeableness and self-confidence but lower with higher scores on extraversion, autonomy and intraception. Taken together these six domains of personality provide useful although imperfect discrimination between students with a rural versus urban location preference. After controlling for student age the associations with extraversion and agreeableness failed to reach statistical significance. CONCLUSIONS: While personality does not fully explain medical students' attitude towards practicing as a rural doctor, the data suggest it is an important factor and that some individuals may be better suited to a rural medical career than others. Considering personality along with other characteristics of the individual might allow targeted 'marketing' of rural practice.


Assuntos
Escolha da Profissão , Personalidade , Serviços de Saúde Rural , Estudantes de Medicina/psicologia , Austrália , Feminino , Humanos , Intenção , Masculino , Inventário de Personalidade , Recursos Humanos , Adulto Jovem
5.
Aust N Z J Psychiatry ; 46(6): 506-21, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22510555

RESUMO

OBJECTIVE: There is much debate over whether borderline personality disorder (BPD) belongs to the bipolar spectrum. The diagnosis of bipolar disorder (BD) in BPD patients, and conversely, BPD in BD patients is common, indicating prevalent co-morbidity, as well as potential misdiagnosis in either group. BD and BPD are often indistinguishable given the core characteristics of emotional dysregulation and impulsivity that feature in both. However, it may be argued that the manifestation of these characteristics in the two groups is different, and that the symptoms are driven by distinct aetiological factors. The primary objective of this paper was to examine where potential areas of discrimination lie between BD and BPD. METHODS: A literature search was conducted using MEDLINE and PubMed databases to identify studies that have researched BD and BPD across the recognised domains of emotional dysregulation, impulsivity, childhood trauma, and their putative neurobiological substrates. RESULTS: Research comparing BD and BPD patients on self-report measures is limited, and no studies have examined their neurobiological underpinnings in the same design. One possible differentiating variable is childhood trauma which shapes the circumstances in which emotional dysregulation and impulsivity are triggered, the types of behaviours exhibited, and the frequency and duration of mood states. There is growing evidence that childhood trauma not only predisposes individuals to both disorders, but also modulates the clinical expression and course of bipolar illness, particularly rapid cycling BD, a form of bipolarity that resembles the clinical profile of BPD, yet presents quite distinctly from other BD subtypes. CONCLUSIONS: This paper provides an overview of BD and BPD with respect to emotional dysregulation, impulsivity, childhood factors, and neurobiological substrates. Based on findings predominantly within the independent areas of BD and BPD, it tentatively provides an integrated behavioural, aetiological and neurobiological approach for investigating the question of whether BPD belongs to the bipolar spectrum.


Assuntos
Transtorno Bipolar/diagnóstico , Transtorno da Personalidade Borderline/diagnóstico , Maus-Tratos Infantis/psicologia , Comportamento Impulsivo/psicologia , Transtorno Bipolar/etiologia , Transtorno Bipolar/psicologia , Transtorno da Personalidade Borderline/etiologia , Transtorno da Personalidade Borderline/psicologia , Criança , Diagnóstico Diferencial , Humanos , Comportamento Impulsivo/etiologia , Neuroimagem
6.
Aust N Z J Psychiatry ; 45(10): 861-70, 2011 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-21923533

RESUMO

OBJECTIVES: This study aimed to characterise the personality profiles of junior medical students most likely to choose psychiatry as a career, determine aspects of psychiatry that most attract potential recruits, and identify misperceptions about psychiatry that may dissuade students from pursuing this specialism. METHOD: A total of 580 second-year medical students from the University of New South Wales, Australia completed a set of questionnaires that measured the likelihood with which various medical specialties were being considered as careers, personality traits using the NEO Five-Factor Inventory (NEO-FFI), and the degree to which students perceived each specialty as attractive across a number of parameters. RESULTS: Only 86 students (15%) indicated a strong likelihood of choosing psychiatry, compared to other specialties which attracted higher proportions of students (range 19-49%). These 86 students had significantly higher openness scores than those who indicated a lesser likelihood of pursuing psychiatry. Students who were highly interested in psychiatry ranked it as very attractive in respect to providing interesting and challenging subject matter, and relatively attractive in respect to financial reward, work enjoyment, good lifestyle, having a bright and interesting future, and association with colleagues. However, psychiatry remained less attractive with respect to prestige, perceived low effectiveness of treatments, degree to which it draws upon aspects of medical training, and lack of reliable scientific foundation. Within the entire sample, psychiatry was ranked most unattractive compared to the other specialties across eight of the 13 parameters assessed. CONCLUSIONS: Students interested in psychiatry are more likely to be 'open' and view the specialty as interesting and challenging. Such characteristics should be promoted more widely along with countering myths that as a specialty, psychiatry lacks a scientific foundation or is somehow different from mainstream medicine in terms of training and outcomes. Championing psychiatry in this manner may attract more recruits and enhance its prestige.


Assuntos
Atitude do Pessoal de Saúde , Escolha da Profissão , Inventário de Personalidade , Psiquiatria , Especialização , Estudantes de Medicina/psicologia , Adulto , Fatores Etários , Feminino , Humanos , Masculino , Caracteres Sexuais , Recursos Humanos
7.
Arch Phys Med Rehabil ; 91(6): 905-12, 2010 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-20510982

RESUMO

OBJECTIVE: To investigate the validity and responsiveness of the Care and Needs Scale (CANS), which was designed to assess support needs of people with traumatic brain injury (TBI). DESIGN: Two samples of community clients (n=38, n=30) were recruited to examine concurrent, convergent/divergent, and discriminant validity. The ability of the CANS to detect change over a 6-month period from the time of inpatient rehabilitation discharge (predictive validity and responsiveness) was investigated in a third sample of 40 rehabilitation inpatients. SETTING: Two Brain Injury Rehabilitation Units in Sydney, Australia. PARTICIPANTS: People (N=108) aged between 16 and 70 years admitted for rehabilitation after TBI. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: The CANS, Supervision Rating Scale, FIM, Sydney Psychosocial Reintegration Scale, and Disability Rating Scale. RESULTS: Evidence for concurrent validity was shown with fair to moderate correlation coefficients between the CANS and measures of supervision, functional independence, and psychosocial functioning (absolute value, r(s)=.43-.68; P<.01). Support for convergent and divergent validity was provided by correlation coefficients that were higher for measures tapping similar constructs (absolute value, r(s)=46; P<.01) but lower for measures of dissimilar constructs (absolute value, r(s)=.07-.26; not significant). In addition, the CANS discriminated between levels of injury severity, functional independence, and overall functioning (P<.01). In terms of predictive validity and responsiveness, CANS scores at inpatient rehabilitation discharge predicted the participant's functioning 6 months later. CONCLUSIONS: These results show the CANS is a valid and responsive tool and, together with its previously shown reliability, is suitable for routine application in clinical and research practice.


Assuntos
Lesões Encefálicas/reabilitação , Necessidades e Demandas de Serviços de Saúde , Atividades Cotidianas , Adolescente , Adulto , Idoso , Análise de Variância , Distribuição de Qui-Quadrado , Avaliação da Deficiência , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Avaliação das Necessidades , Escalas de Graduação Psiquiátrica , Apoio Social , Inquéritos e Questionários , Fatores de Tempo
8.
Australas Psychiatry ; 18(4): 348-53, 2010 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-20645902

RESUMO

OBJECTIVE: The aim of this paper was to examine the influence of a clinical attachment in psychiatry on medical students' attitudes to psychiatry as a specialty and potential career. METHOD: Medical students at Sydney Medical School were surveyed following an 8-week clinical attachment in psychiatry. Secondary analyses sought to identify associations with variables such as age, gender and level of clinical experience as a medical student. RESULTS: Following a clinical attachment in psychiatry, 80% of students rated their attitude to psychiatry as more positive. Approximately 32% rated themselves as likely or very likely to choose a career in psychiatry. No differences were seen with respect to gender, age or stage of training. The quality of the teaching, enthusiasm of the clinical teachers, the holistic approach and scientific basis of psychiatry were cited by students as factors influencing attitudes. CONCLUSIONS: The clinical rotation in psychiatry is a significant factor influencing medical student attitudes towards psychiatry.


Assuntos
Atitude do Pessoal de Saúde , Escolha da Profissão , Estágio Clínico , Psiquiatria/educação , Estudantes de Medicina/psicologia , Ensino , Adulto , Fatores Etários , Austrália , Feminino , Humanos , Masculino , Fatores Sexuais , Fatores de Tempo
9.
Australas Psychiatry ; 18(4): 354-60, 2010 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-20645903

RESUMO

OBJECTIVE: The aim of this paper was to determine the teaching activities most valued by medical students in the psychiatry rotation and to examine whether this varies with age, gender or stage of training. METHOD: Medical students at Sydney Medical School were surveyed following an 8-week clinical attachment in psychiatry. Differences in ratings between activities were examined by means of ANOVA and post hoc contrasts. RESULTS: The learning activities involving face-to-face teaching received the highest ratings. The most valued tutorial was that given weekly by a dedicated academic clinician. No differences were seen with respect to age and gender. Inconsistent differences were seen between stages of training for skills sessions, but no other learning activities. CONCLUSIONS: Face-to-face clinical teaching should be a priority in clinical attachments in psychiatry as it is highly valued by students and contributes to positive attitudes towards psychiatry.


Assuntos
Atitude do Pessoal de Saúde , Educação de Graduação em Medicina/métodos , Aprendizagem Baseada em Problemas/métodos , Psiquiatria/educação , Estudantes de Medicina/psicologia , Ensino/métodos , Adulto , Análise de Variância , Feminino , Humanos , Masculino , Fatores de Tempo
10.
Australas Psychiatry ; 18(1): 32-41, 2010 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-20039791

RESUMO

OBJECTIVE: The aim of this study was to identify the prevalence of metabolic syndrome and its putative precursors in a naturalistic study of non-acute inpatients at a psychiatric hospital. METHOD: Anthropometric and biochemical data collected from the hospital's annual cardiometabolic survey, along with information about prescribed medications, were used to assess the prevalence and predictors of physical health problems in patients with schizophrenia. RESULTS: Of the 167 patients included in the survey, 52.4% met criteria for metabolic syndrome. A shorter duration of hospital admission and clozapine use were significant predictors of metabolic syndrome. Age, gender, duration of admission and clozapine use were all predictors of individual cardiometabolic risk factors. CONCLUSIONS: The findings from this naturalistic study reinforce the high prevalence of physical health problems in patients with schizophrenia and the important influence that psychiatric treatments can have on physical health. The impact of clozapine on cardiometabolic health appears to occur early in the course of treatment and emphasizes the need for proactive monitoring and interventions from the outset of management.


Assuntos
Antipsicóticos/efeitos adversos , Clozapina/efeitos adversos , Síndrome Metabólica/induzido quimicamente , Esquizofrenia/tratamento farmacológico , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Antipsicóticos/uso terapêutico , Doença Crônica , Clozapina/uso terapêutico , Feminino , Humanos , Masculino , Síndrome Metabólica/complicações , Síndrome Metabólica/epidemiologia , Pessoa de Meia-Idade , Prevalência , Fatores de Risco , Esquizofrenia/complicações , Fatores Sexuais , Resultado do Tratamento
12.
Australas Psychiatry ; 17(1): 19-24, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-18608158

RESUMO

OBJECTIVES: The aim of this paper was to explore the relationship between the personality traits of Australian General Practitioners (GPs) and their gender, work practice arrangements, and history of medico-legal matters. METHODS: A cross-sectional self report survey was mailed to 1239 GPs. There were 566 respondents (45.7% response rate to survey). The survey assessed personality traits (using the Eysenck Personality Questionnaire), demographic and practice information, and history of medico-legal matters with any medical defence organization. The number and type of medico-legal matters was also extracted from the UNITED Medical Protection database. RESULTS: Male respondents had significantly higher psychoticism scores than females (p<0.001), and females had significantly higher neuroticism scores than males (p<0.01), as in community samples. However, for GPs who worked more than 48 hours per week, there were no gender differences in personality trait scores. Solo practitioners and non-solo practitioners did not differ on personality scores. Proceduralists and non-proceduralists did not differ on personality scores. However, a higher proportion of proceduralists experienced a medico-legal matter than non-proceduralists (p<0.001). There was a positive correlation between extraversion scores and doctors who attended peer review (p<0.001). There was no difference in the numbers of medico-legal matters for doctors who attended peer review. Males who self reported a medico-legal matter had higher neuroticism scores than the males who did not report medico-legal matters. This was not the case for females. For males, this pattern was not replicated when considering data from UNITED. CONCLUSIONS: The known demographic and practice factors that differ for doctors having a medico-legal matter are replicated here--being male, a proceduralist and working longer hours. There is not a consistent pattern regarding personality traits and medico-legal matters.


Assuntos
Caráter , Imperícia , Médicos de Família/psicologia , Padrões de Prática Médica , Austrália , Estudos Transversais , Inquéritos Epidemiológicos , Humanos , Seguro de Responsabilidade Civil/estatística & dados numéricos , Imperícia/estatística & dados numéricos , Transtornos Neuróticos/diagnóstico , Transtornos Neuróticos/epidemiologia , Transtornos Neuróticos/psicologia , Inventário de Personalidade/estatística & dados numéricos , Médicos de Família/estatística & dados numéricos , Psicometria , Transtornos Psicóticos/diagnóstico , Transtornos Psicóticos/epidemiologia , Transtornos Psicóticos/psicologia , Fatores de Risco , Fatores Sexuais , Especialização/estatística & dados numéricos , Estatística como Assunto , Tolerância ao Trabalho Programado/psicologia
13.
Bipolar Disord ; 10(8): 943-56, 2008 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-19594509

RESUMO

OBJECTIVES: To determine the neural responses invoked in Theory of Mind (ToM) in euthymic bipolar patients as compared with healthy subjects. METHODS: This study examined 20 euthymic bipolar patients (11 males and 9 females) and 20 suitably matched healthy subjects using functional magnetic resonance imaging (fMRI) while subjects were engaged in a ToM task. Within-scanner eye movements were monitored to ensure task engagement. The activation paradigm involved observing ToM and random-motion animated sequences in a block design. Both within group (ToM versus random motion) and random effects between group analyses were performed on fMRI data using the BrainVoyager software package. Demographic and clinical data, along with subject ratings of fMRI stimuli, were collated and analysed. RESULTS: Patients were compromised in their ability to appropriately rate the ToM stimuli and assess them for intention as compared to healthy subjects. This was reflected in the fact that patients had few within-group significant activations in response to ToM animated sequences, namely, the left anterior cingulate, and precuneus and cuneus bilaterally. In contrast, robust activations in response to ToM animated sequences in healthy subjects were widespread and involved regions recognized for mental state reasoning, in particular the insula, inferior frontal, supramarginal and angular gyri, and temporal cortex. The between-group random effects analysis exclusively favoured the healthy subjects, with many activations occurring in regions overlapping with those found in the within-group analyses. CONCLUSIONS: The findings of this novel neuroimaging study suggest that in a social context, euthymic bipolar patients, though seemingly well and capable of engaging aspects of ToM, are perhaps constrained in their ability to mentalize fully, and furthermore cannot reliably adopt an alternate cognitive perspective when appropriate. Impairment of this capacity, though subtle, may in effect compromise their ability to understand the emotions and intentions of others, and also may limit appreciation of their own illness and symptoms. Such a deficit in bipolar disorder perhaps impacts upon interpersonal relationships and adversely affects social cognition and clinical functioning. The potential implications of this putative mentalizing compromise in euthymic patients with bipolar disorder are substantial, both for the individual and for understanding the neural substrate of the illness, and therefore warrant further investigation.


Assuntos
Afeto/fisiologia , Transtorno Bipolar/fisiopatologia , Processamento de Imagem Assistida por Computador , Imageamento por Ressonância Magnética , Teoria da Construção Pessoal , Adulto , Atenção/fisiologia , Transtorno Bipolar/diagnóstico , Transtorno Bipolar/psicologia , Mapeamento Encefálico , Percepção de Cores/fisiologia , Dominância Cerebral/fisiologia , Feminino , Giro do Cíngulo/fisiopatologia , Humanos , Imaginação/fisiologia , Intenção , Masculino , Pessoa de Meia-Idade , Percepção de Movimento/fisiologia , Rede Nervosa/fisiopatologia , Reconhecimento Visual de Modelos/fisiologia , Escalas de Graduação Psiquiátrica , Software
14.
Schizophr Res ; 96(1-3): 169-84, 2007 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-17826035

RESUMO

This study examined the relationship between neuropsychological performance and three different indices of cannabis use in schizophrenia. These indices were DSM-IV lifetime abuse/dependence, frequency of use, and recency of use. Sixty males with schizophrenia/schizoaffective disorder and 17 healthy males were recruited. The two groups were matched for age, years of education, and premorbid IQ. Medical history, substance use, and psychiatric symptoms were assessed. A neuropsychological battery was also administered to assess attention/processing speed, executive functions, memory, and perceptual organisation. Substance use within 24 hours of cognitive assessment was screened by urine analysis, and a range of confounds were controlled. In the schizophrenia group, 44 participants met DSM-IV criteria for lifetime cannabis abuse/dependence. In addition, there were three mutually exclusive frequency-of-cannabis-use subgroups comprising "high" frequency users (n=11), "medium" frequency users (n=7), and "low" frequency users (n=34) over the preceding year. There were also four mutually exclusive recency-of-cannabis-use categories comprising "cannabis abuse/dependence in the past week" (n=11 users), "non-dependent cannabis use in the past week" (n=7 users), "non-dependent cannabis use in the past month, but prior to the past week" (n=7 users), and "non-dependent cannabis use prior to the past month" (n=9 users). The control group performed better than the schizophrenia group in all cognitive domains. Within the schizophrenia group, a larger proportion of participants with lifetime cannabis abuse/dependence demonstrated better performance than those without lifetime abuse/dependence on a component of psychomotor speed. Frequency and recency of cannabis use were also associated with better neuropsychological performance, predominantly in the domains of attention/processing speed and executive functions. In conclusion, cannabis use is associated with enhanced cognitive functioning in schizophrenia. Implications of the results, limitations of the study, and directions for future research are discussed.


Assuntos
Abuso de Maconha/epidemiologia , Esquizofrenia/complicações , Adolescente , Adulto , Idade de Início , Análise de Variância , Antipsicóticos/uso terapêutico , Humanos , Masculino , Testes Neuropsicológicos , New South Wales , Esquizofrenia/tratamento farmacológico , Psicologia do Esquizofrênico , Percepção Espacial , Pensamento
15.
J Affect Disord ; 158: 8-10, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24655759

RESUMO

BACKGROUND: DSM׳s replacement of 'mixed episodes' with 'mixed features' has ironically created a specifier, which potentially lacks specificity because it overlooks two key symptoms: psychomotor agitation and distractibility. Therefore, the present study examined the presence of psychomotor agitation and distractibility across the mood disorder spectrum. METHODS: Two hundred patients were diagnosed and assigned to one of three groups (depression, bipolar spectrum disorder (BDspectrum) and bipolar disorder) based on clinical evaluation by a psychiatrist. On the basis of MDQ scores, the depression group was then further subdivided into two groups: unipolar depression (UP) and mixed depression (UPmix). These four groups were then compared to examine the relative distribution of psychomotor agitation and distractibility. Participants underwent a clinical evaluation by a psychiatrist and completed a series of questionnaires. RESULTS: Increased distraction, racing thoughts, and increased irritability were the most commonly reported manic symptoms amongst the unipolar depression group. Further, UPmix and BDspectrum had significantly higher psychomotor agitation and distractibility than the other two groups. LIMITATIONS: The present study depended on self-report measures and did not include standardised measures of distractibility and psychomotor agitation. Future research needs to examine pure unipolar patients without any manic symptoms to clarify further how different this group would be from those with mixed features. CONCLUSIONS: The present findings suggest that distractibility and psychomotor agitation may represent the core of mixed states, as they are more common in patients with mixed depression and bipolar spectrum disorder than patients diagnosed with unipolar depression and bipolar I disorder. Future research and clinical implications are discussed.


Assuntos
Atenção , Transtorno Bipolar/diagnóstico , Transtorno Depressivo/diagnóstico , Manual Diagnóstico e Estatístico de Transtornos Mentais , Agitação Psicomotora , Adulto , Transtorno Bipolar/psicologia , Transtorno Depressivo/psicologia , Feminino , Humanos , Entrevista Psicológica , Masculino , Sensibilidade e Especificidade , Inquéritos e Questionários
16.
J Affect Disord ; 152-154: 375-80, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24268593

RESUMO

BACKGROUND: The treatment of depression in primary care remains suboptimal for reasons that are complex and multifactorial. Typically GPs have to make difficult decisions in limited time and therefore, the aim of this study was to examine the management of depression of varying severity and the factors associated with treatment choices. METHOD: Nested within a primary care educational initiative we conducted a survey of 1760 GPs. The GPs each identified four patients with clinical depression whom they had treated recently and then answered questions regarding their diagnosis and management of each patient. RESULTS: Comorbid anxiety, sadness and decreased concentration appeared to direct the management of depression toward psychological therapy, whereas comorbid pain and a patient's overall functioning, such as the ability to do simple everyday activities, directed the initiation of pharmacological treatment. The use of antidepressants with a broader spectrum of actions (acting on multiple neurotransmitters) increased from mild to severe depression, whereas this did not occur with the more selective agents. SSRIs were prescribed more frequently compared with all other antidepressants, irrespective of depression severity. LIMITATIONS: GPs chose the RADAR programme and therefore they were potentially more likely to have an interest in mental health compared to GPs who did not participate. CONCLUSIONS: GPs do not appear to be determining pharmacological treatment based on depression subtype and specificity, but rather on the basis of the total number of symptoms and overall severity. While acknowledging important differences between primary care and specialist practice, it is suggested that guidelines to assist GPs in matching treatment to depression subtype may be of practical assistance in decision-making, and the delivery of more effective treatments.


Assuntos
Depressão/terapia , Atenção Primária à Saúde/métodos , Antidepressivos/uso terapêutico , Coleta de Dados , Depressão/tratamento farmacológico , Clínicos Gerais/estatística & dados numéricos , Humanos , Padrões de Prática Médica/estatística & dados numéricos , Atenção Primária à Saúde/estatística & dados numéricos , Psicoterapia , Inibidores Seletivos de Recaptação de Serotonina/uso terapêutico , Índice de Gravidade de Doença
17.
CNS Drugs ; 27(2): 135-53, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-23371914

RESUMO

Lithium has been used for over half a century for the treatment of bipolar disorder as the archetypal mood stabilizer, and has a wealth of empirical evidence supporting its efficacy in this role. Despite this, the specific mechanisms by which lithium exerts its mood-stabilizing effects are not well understood. Given the inherently complex nature of the pathophysiology of bipolar disorder, this paper aims to capture what is known about the actions of lithium ranging from macroscopic changes in mood, cognition and brain structure, to its effects at the microscopic level on neurotransmission and intracellular and molecular pathways. A comprehensive literature search of databases including MEDLINE, EMBASE and PsycINFO was conducted using relevant keywords and the findings from the literature were then reviewed and synthesized. Numerous studies report that lithium is effective in the treatment of acute mania and for the long-term maintenance of mood and prophylaxis; in comparison, evidence for its efficacy in depression is modest. However, lithium possesses unique anti-suicidal properties that set it apart from other agents. With respect to cognition, studies suggest that lithium may reduce cognitive decline in patients; however, these findings require further investigation using both neuropsychological and functional neuroimaging probes. Interestingly, lithium appears to preserve or increase the volume of brain structures involved in emotional regulation such as the prefrontal cortex, hippocampus and amygdala, possibly reflecting its neuroprotective effects. At a neuronal level, lithium reduces excitatory (dopamine and glutamate) but increases inhibitory (GABA) neurotransmission; however, these broad effects are underpinned by complex neurotransmitter systems that strive to achieve homeostasis by way of compensatory changes. For example, at an intracellular and molecular level, lithium targets second-messenger systems that further modulate neurotransmission. For instance, the effects of lithium on the adenyl cyclase and phospho-inositide pathways, as well as protein kinase C, may serve to dampen excessive excitatory neurotransmission. In addition to these many putative mechanisms, it has also been proposed that the neuroprotective effects of lithium are key to its therapeutic actions. In this regard, lithium has been shown to reduce the oxidative stress that occurs with multiple episodes of mania and depression. Further, it increases protective proteins such as brain-derived neurotrophic factor and B-cell lymphoma 2, and reduces apoptotic processes through inhibition of glycogen synthase kinase 3 and autophagy. Overall, it is clear that the processes which underpin the therapeutic actions of lithium are sophisticated and most likely inter-related.


Assuntos
Transtorno Bipolar/tratamento farmacológico , Compostos de Lítio/farmacologia , Animais , Transtorno Bipolar/metabolismo , Humanos , Compostos de Lítio/uso terapêutico , Transdução de Sinais/efeitos dos fármacos , Transmissão Sináptica/efeitos dos fármacos
18.
Biol Psychiatry ; 74(4): 265-72, 2013 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-23477296

RESUMO

BACKGROUND: Emotional symptoms (ES) emerge forme fruste in adolescence, before manifesting as fully fledged emotional disorders. Studies indicate that subsyndromal ES precede the onset of emotional disorders. We hypothesized that adolescents showing subsyndromal ES will show perturbations in the emotion regulatory frontolimbic network (FLN) during emotion processing. METHODS: Fifty-eight female adolescents underwent functional magnetic resonance imaging while viewing an image-based emotion-processing task. Within this sample, 33 (56.9%) displayed emotional symptoms and 25 (43.1%) did not. Clinical measures, including assessments of mood and anxiety, were administered and participants were allocated to one of two groups based on the presence (ES+) or absence (ES-) of subsyndromal ES. Group comparisons were used to identify differential patterns of neural engagement and their relationship to clinical variables. RESULTS: Groups displayed emotion-specific differences in FLN activity with increased frontal activity in ES+ girls during positive emotion processing and decreased frontal and limbic activity during negative emotion processing. Trait anxiety was the strongest clinical predictor of group membership (ES+ versus ES-) and displayed a significant negative correlation with hippocampal neural activity during negative emotion processing. In addition, between the groups, the hippocampus displayed a pattern of reverse coupling with the amygdala and insula that was also significantly correlated with trait anxiety. CONCLUSIONS: There is divergence in the pattern of FLN neural processing in adolescent female subjects determined by emotional symptoms. Future research is needed to corroborate these findings and to underline their implications longitudinally.


Assuntos
Sintomas Afetivos/fisiopatologia , Lobo Frontal/fisiopatologia , Sistema Límbico/fisiopatologia , Neurônios/fisiologia , Sintomas Prodrômicos , Adolescente , Feminino , Humanos , Imageamento por Ressonância Magnética
19.
J Affect Disord ; 145(1): 54-61, 2013 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-22921480

RESUMO

BACKGROUND: Euthymic bipolar disorder (BD) patients often demonstrate better clinical outcomes than remitted patients with unipolar illness (UP). Reasons for this are uncertain, however, personality and coping styles are each likely to play a key role. This study examined differences between euthymic BD and UP patients with respect to the inter-relationship between personality, coping style, and clinical outcomes. METHODS: A total of 96 UP and 77 BD euthymic patients were recruited through the CADE Clinic, Royal North Shore Hospital in Sydney, and assessed by a team comprising Psychiatrists and Psychologists. They underwent a structured clinical diagnostic interview, and completed self-report measures of depression, anxiety, stress, personality, coping, social adjustment, self-esteem, dysfunctional attitudes, and fear of negative evaluation. RESULTS: Compared to UP, BD patients reported significantly higher scores on levels of extraversion, adaptive coping, self-esteem, and lower scores on trait anxiety and fear of negative evaluation. Extraversion correlated positively with self-esteem, adaptive coping styles, and negatively with trait anxiety and fear of negative evaluation. Trait anxiety and fear of negative evaluation correlated positively with eachother, and both correlated negatively with self-esteem and adaptive coping styles. Finally, self-esteem correlated positively with adaptive coping styles. LIMITATIONS: The results cannot be generalised to depressive states of BD and UP, as differences in the course of illness and types of depression are likely to impact on coping and clinical outcomes, particularly for BD. CONCLUSIONS: During remission, functioning is perhaps better 'preserved' in BD than in UP, possibly because of the protective role of extraversion which drives healthier coping styles.


Assuntos
Adaptação Psicológica , Transtorno Bipolar/psicologia , Transtorno Depressivo/psicologia , Personalidade , Adulto , Ansiedade , Transtorno Bipolar/fisiopatologia , Depressão , Transtorno Depressivo/fisiopatologia , Extroversão Psicológica , Medo , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Autoimagem , Ajustamento Social
20.
Psychiatry Res ; 200(2-3): 457-63, 2012 Dec 30.
Artigo em Inglês | MEDLINE | ID: mdl-22770762

RESUMO

Personality distinctions exist between male and female doctors, and between surgeons and non-surgeons, but given the predominance of males in surgery, the personality profile of females interested in surgery is less clear. This study examined personality and other attributes of female medical students attracted to the surgical profession. A total of 580 second-year medical students in Australia completed questionnaires that measured their likelihood of considering various medical specialties, personality traits using the NEO Five-Factor Inventory (NEO-FFI), and the importance of several other parameters in directing career choice. Significantly fewer females than males rated surgery highly likely as a career. Females interested in surgery had higher Neuroticism and Agreeableness scores, and placed greater importance on ability to help people, and less importance on prestige and financial reward compared to males interested in surgery. Compared to males not interested in surgery, females interested in surgery had higher Openness scores, and placed greater importance on ability to help people, interesting and challenging work, and less importance on lifestyle. Lastly, females interested in surgery had lower Agreeableness scores, and placed greater importance on prestige and less importance on lifestyle compared to females not interested in surgery. Common findings that surgeons compared to non-surgeons are more tough-minded, less patient-oriented and less empathic may be a function of the prevalence of males in surgery. In our sample, the females interested in surgery retained an overall similar personality profile to those less interested, with only few differences.


Assuntos
Escolha da Profissão , Personalidade , Estudantes de Medicina/psicologia , Adulto , Austrália , Feminino , Humanos , Estilo de Vida , Masculino , Inventário de Personalidade , Fatores Sexuais , Inquéritos e Questionários
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