Publications by authors named "Peter Bosanac"

Article Synopsis
  • Deep brain stimulation (DBS) is being explored as an effective treatment for severe obsessive-compulsive disorder (OCD), with various potential targets in the brain, especially around the anterior limb of the internal capsule and ventral striatum.
  • A study involving 82 OCD patients identified two key stimulation sites linked to significant symptom improvements: one near the anterior limb of the internal capsule and another near the inferior thalamic peduncle, while also showing that stimulation at certain locations can lead to better outcomes for depression and anxiety.
  • The findings suggest that refining the targeting of DBS could enhance treatment effectiveness and help optimize DBS programming for patients already receiving therapy.
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Aim: Deep brain stimulation (DBS) is a safe and effective treatment option for people with refractory obsessive-compulsive disorder (OCD). Yet our understanding of predictors of response and prognostic factors remains rudimentary, and long-term comprehensive follow-ups are lacking. We aim to investigate the efficacy of DBS therapy for OCD patients, and predictors of clinical response.

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The current scientific enquiry of deep brain stimulation (DBS) does not capture the breadth of DBS-induced changes to an individual's life. Considering that DBS is applied in severe and complex cases, it is ethically and clinically necessary to consider the patient perspective and personally relevant outcomes. This lived experience investigation of people with obsessive compulsive disorder (OCD) undergoing DBS aims to provide a comprehensive evaluation of DBS-induced effects associated with OCD psychopathology.

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This paper explores the lived experience of mental illness within the field of psychology across higher education and the mental health workforce. There is a high prevalence of mental health issues among psychology students and practitioners, and it is critical not only to provide support for these populations, but also to acknowledge the value of leveraging their lived experience within their education and practice. There has been increased interest in and advocacy for the involvement of those with lived experience of mental illness within mental healthcare service provision to improve patient experiences and outcomes.

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Severe and refractory psychiatric patients can experience complex and profound changes in symptomology, functioning and well-being from deep brain stimulation (DBS) therapy. Currently, the efficacy of DBS is assessed by clinician rated scales of primary symptoms, yet this does not capture the multitude of DBS mediated changes or represent the patient perspective. We aimed to elucidate the patient perspective in psychiatric DBS application by investigating 1) symptomatic, and 2) psychosocial changes, 3) therapeutic expectations and satisfaction, 4) decision-making capacity, and 5) clinical care recommendations from treatment refractory obsessive-compulsive disorder (OCD) DBS patients.

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Deep brain stimulation is an emerging therapy for treatment-refractory obsessive-compulsive disorder patients. Yet, accessibility is limited, treatment protocols are heterogeneous and there is no guideline or consensus on the best practices. Here, we combine evidence from scientific investigations, expert opinions and our clinical expertise to propose several clinical recommendations from the pre-operative, surgical and post-operative phases of deep brain stimulation care for treatment-refractory obsessive-compulsive disorder patients.

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Invasive and noninvasive neurostimulation therapies for obsessive-compulsive and related disorders (OCRD) were systematically reviewed with the aim of assessing clinical characteristics, methodologies, neuroanatomical substrates, and varied stimulation parameters. Previous reviews have focused on a narrow scope, statistical rather than clinical significance, grouped together heterogenous protocols, and proposed inconclusive outcomes and directions. Herein, a comprehensive and transdiagnostic evaluation of all clinically relevant determinants is presented with translational clinical recommendations and novel response rates.

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Objectives: This paper reviews the major findings of the Victorian Psychiatry Attraction, Recruitment and Retention Needs Analysis Project and considers some of the implications for the psychiatrist workforce working in public sector psychiatry.

Conclusions: The report provides a snapshot of the issues that are impairing the ability of Victorian psychiatrists to comprehensively treat those in our community who have severe mental illness. As the report shows, the issues impacting the profession are multi-faceted and complex, yet surmountable.

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Background: Deep Brain Stimulation (DBS) is an emerging and potentially powerful biological treatment for severe Obsessive-Compulsive Disorder (OCD), but the wider impact of the intervention and the sometimes dramatic reduction in symptoms need greater attention in research and practice. The aim of this case study is to explore the subjective experience of preparing for and undergoing DBS as a treatment for severe and treatment-refractory OCD and the experience of the impact of the treatment.

Methods: This study of subjective experience before and after DBS is based on narrative analysis of two in-depth interviews conducted in November 2014 (1 year after DBS surgery) with a 30-year-old man and his father, utilizing Consolidated Criteria for Reporting Qualitative Studies (COREQ) criteria.

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Background: The prevalence of anxiety symptoms among Australians with psychotic disorders was examined as part of the Survey of High Impact Psychosis (SHIP).

Methods: A two-phase design was used. Of 7,955 people who were screened positive for psychosis and eligible, there were 1,825 participants (18-34 years and 35-64 years) interviewed.

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Objective: The place of monoamine oxidase inhibitors (MAOIs) in psychiatry is reviewed, and the question posed as to whether they are now justifiably disregarded by prescribers.

Method: Multiple databases (PubMed, Medline, Embase, Cochrane) were interrogated to provide an overview regarding the use, efficacy and toxicity of MAOIs. Data regarding funded use of these agents in New Zealand were obtained from PHARMAC.

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Objective: To provide a clinically-focused review of the biological treatment of treatment-resistant obsessive compulsive disorder (OCD).

Conclusions: There is a paucity of research on how to manage OCD patients who fail to respond adequately to first line therapies. High-dose selective serotonin reuptake inhibitors (SSRIs) and clomipramine have good evidence-based data.

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Objective: We aim to provide a selective clinically focused review of the epidemiology, aetiology and management of comorbid anxiety in people with schizophrenia.

Method: The following databases were reviewed: PubMed, Medline and Embase.

Results: Anxiety is highly prevalent throughout course of schizophrenia, but is often not identified or its clinical significance is under-appreciated.

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Objectives: A proof-of-concept study over an 18-month period to determine whether a mentalization-based intervention (MBI) in a metropolitan community mental health service, when added to a recovery-based model of care, would be of clinical benefit to borderline personality disorder (BPD) consumers with a history of recurrent, deliberate self-harm. The feasibility of implementing the intervention, and factors that could improve its implementation, will be evaluated.

Methods: Three-monthly focus groups with participating community mental health service case managers (N = 8) assessed the implementation and the impact of an MBI added to a recovery model of care and the way the clinicians worked with consumers with BPD and recurrent, deliberate self-harm in this context.

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DSM-5 contains substantial changes to eating disorder diagnoses. We examined relative prevalence rates of DSM-IV and DSM-5 eating disorder diagnoses using Eating Disorder Examination-Questionnaire diagnostic algorithms in 117 community out-patients. DSM-5 criteria produced a reduction in combined 'other specified feeding or eating disorder' and 'unspecified feeding or eating disorder' from 46% to 29%, an increase in anorexia nervosa diagnoses from 35% to 47%, the same number of bulimia nervosa diagnoses and a 5% rate of binge eating disorder diagnoses.

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Objective: To review the current role and comparative efficacy of short-acting intramuscular (IM) antipsychotics in the management of acute agitation, in current clinical practice.

Method: The efficacy and tolerability of IM antipsychotics in the management of acute agitation in current clinical practice were reviewed in the Medline, PubMed, Cinahl Plus, Scopus-v.4 and PsycInfo databases.

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Objective: In 2010, the authors identified in a separate publication, Mind the evidence gap, the sparse evidence-base for the treatment of adult anorexia nervosa and barriers to accessing care. We report on the ensuing development, implementation and first 18-month results of a novel eating disorder service bridging the primary and specialist continuum of care in Victoria, Australia.

Method: Using literature review, stakeholder, and consumer and carer consultation, a model for a community eating disorder service was developed and then implemented.

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Background: This study was conducted to explore the efficacy and tolerability of quetiapine extended release (XR) to treat psychosis and accompanying acute behavioral disturbance in hospitalized psychiatric patients.

Methods: Patients with psychosis who displayed aggression were administered quetiapine XR (day 1 mean dose: 293.3 mg).

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