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‘Beating The Rush’: A web-based assessment and brief intervention for amphetamine use
The aim of this current study is to establish whether a web-based CBT intervention is effective in treating amphetamine use and its associated harms. Of particular interest is the potential role that contingency management may have on treatment success. Another aim of this research is to identify predictors of treatment outcome for amphetamine users (self-efficacy and impulsivity). It is hypothesised that i) participants who undertake the Internet-delivered CBT intervention in combination with contingency management (monetary incentives for remaining in treatment) will show greater reductions in their use of amphetamines as well as reductions in harms associated with use, higher rates of abstinence and will remain in treatment longer in comparison to the waitlist control group, ii) treatment retention and outcomes will be influenced by self-efficacy and an impulsive temperament.
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Impact of pacemaker on cardiac function
Introduction: Right ventricular apical (RVA) pacing results in abnormal left ventricular (LV) electrical and mechanical activation and is associated with adverse effects on left ventricular systolic function. The comparative effects of right ventricular outflow tract septal (RVOTS) pacing on cardiac structural remodeling are unknown. Our aim is to therefore examine the long-term effects of septal RVOT versus RVA pacing on ventricular and atrial structure and function using cardiac magnetic resonance imaging (CMR). Methods/Design: A multicenter randomised controlled trial in which 180 patients with an indication for ventricular pacing using a permanent pacemakers (PPM) will be randomized to pacing either from the RVA or RVOT septum. All patients will have a baseline CMR, Echocardiogram, 6-minute walk test, quality of life scoring e.g. SF36, Minnesota Living with Heart Failure Score (MLWHF) and blood tests such as NT pro-BNP, HsCRP and biomarkers of myocardial fibrosis e.g. MMP-9, TIMP-1. The tests will be repeated at 12 months, 24 months and 36 months. The following clinical outcomes will be used: Primary Endpoint: Investigate the effect of apical and septal right ventricular site pacing on left ventricular structural change and ejection fraction using cardiac MRI. Secondary Endpoint: Clinical Parameters: New York Heart Association Functional class, Quality of life assessed by a subjective validated patient scoring algorithm (SF36/ MLWHF), 6 min walk test. Biologic Parameters: N-terminal pro-hormone brain natriuretic peptide (NT pro-BNP), High sensitivity C reactive Protein (HsCRP), Biomarkers of myocardial fibrosis e.g. MMP-9, TIMP-1. Combined clinical end point: New-onset atrial tachyarrhythmia, new onset heart failure, heart failure related hospitalizations. CRT-P, CRT-D or AICD upgrade. The Effect of cardiac remodeling on its hemodynamics. Lead-related complications such as lead dislodgement, myocardial perforation, lead Will integrity failure The impact of ventricular pacing site to right ventricular and atrial remodeling. Conclusion: The results of the study will provide new information about the potential benefits in mechanical function and consequent clinical endpoint(s) of septal versus apical pacing.
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A Pilot Study: The effect of in-office irrigation with 5% povidone-iodine to reduce the duration of adenoviral conjunctivitis
The primary purpose of this pilot study aims to determine the effectiveness of treating this particular viral eye infection (adenoviral conjunctivitis) with a one-time in-office irrigation of the eye with 5% povidone-iodine. We aim to determine whether this treatment reduced the period of infection as well as improving patient’s symptoms'.
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Paroxetine for Anxiety in Patients with Chronic Obstructive Pulmonary Disease(emphysema).
An association between increased dyspnoea scores, mood disorders and anxiety levels in patients with COPD has been well established. On a neurochemical level, this association has been further explained in rat models showing that prolonged hypoxia affects the areas of the brain involved in mood control. The understanding of mechanisms of mood control by antidepressants has evolved over time. The strong antidepressant activity of Tricyclic Antidepressants (TCAs) has supported the role of both norepinephrine and serotonin (5-HT) in mood disorders. The next generation of antidepressants included the Selective Serotonin Reuptake Inhibitos (SSRIs), further supporting the role of serotonin. Furthermore, antidepressants have been hypothesised to work in COPD patients by decreasing autonomic over-activity, or detaching excessive distress associated with COPD, thus enabling patients to better endure increased physical activity and physiological changes. Hence, our hypothesis is that subjects recruited from public hospitals with COPD and clinically significant depression and/or anxiety that are given paroxetine 20 mgs daily for 4 months will: (Hypothesis 1: principle hypothesis): have a significant reduction in their anxiety symptoms as compared with the placebo at 4 months follow-up, and; (Hypothesis 2): these improved levels of anxiety will be associated with: improved quality of life and exercise capacity, and (Hypothesis 3): these improved levels of anxiety will be associated with: a.) a reduction in hospital bed utilisation, and; b.) a reduction in health care costs in relation to existing practice in long term (12 months)
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Cerebral blood flow and cognition in diabetes: A pilot cross-sectional investigation
People with type 2 diabetes are at increased risk of developing arterial disease. Arteries stiffen with advancing age and this process is exacerbated in type 2 diabetes and other risk factors for heart disease. Increasing stiffness of arteries in the brain may impede regional blood flow, thus impairing brain function; those with poor mental abilities appear to have stiffer blood vessels in the brain compared to healthy individuals. This may account for the increased prevalence of cognitive decline associated with type 2 diabetes. However, no studies have yet investigated whether arterial function in the brain is related to the mental abilities of adults with type 2 diabetes. This project will be the first of its kind to evaluate whether artery stiffness in the brain and biomarkers of insulin resistance and type 2 diabetes are indicators of impaired mental abilities, such as attention, concentration and memory. The introduction transcranial Doppler ultrasound (TCD) enables us to readily assess the pulsatility of blood flow in the middle cerebral artery, a measure of arterial stiffness in the brain. Moreover, we will also measure cerebrovascular responsiveness (CVR), i.e. the ability of blood vessels in brain regions to dilate in response to psychological stimuli. Thus, at the same time as evaluating the cognitive abilities of people with type 2 diabetes, we can assess the ability of their arteries to supply more blood to the brain during the mental tests. We will compare these capabilities in type 2 diabetes with age and gender matched healthy controls. We will also examine their relationship to indicators of the severity of diabetes, viz. insulin resistance and glycated haemoglobin. We hypothesise that a) cerebral blood flow pulsatility will be higher and CVR to cognitive stimuli will be lower in type 2 diabetes patients than in healthy controls; b) both measures will correlate with the severity of insulin resistance/diabetes and the extent of cognitive decline. The results will indicate the extent to which impaired artery function in the brain is a potential risk factor for decline in mental abilities in type 2 diabetes and will help us to devise early intervention strategies to prevent future loss of mental abilities in this at-risk population.
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A computerised psychological treatment for problematic cannabis use and depression in an early psychosis treatment service
The aim of the project is to trial the use of a computerized psychological treatment for problematic cannabis use in Early Psychosis. Cannabis use is associated with an increased risk of psychosis and cannabis use is high in people presenting for treatment of first episode psychosis (FEP). Cannabis use is also associated with high relapse rates in FEP. Therefore, it is vital that Early Psychosis Treatment Centers (EPTC) address cannabis use. This project aims to trial the SHADE computerized treatment package among an FEP sample presenting to an EPTC at Bondi Junction Community Mental Health Centre and Campbelltown Community Mental Health Centre, to determine whether the addition of this resource is effective in reducing cannabis use over the treatment period.
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Botulinum toxin injection for vocal cord dysfunction in asthma
The study aims to provide proof-of-concept support for the use of botulinum toxin in difficult-to-treat asthma with vocal cord dysfunction.
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Does telephoning patients before the procedure improve patients' understanding of the risks of colonoscopy? A randomised controlled trial
The purpose of this study is to determine if a telephone call 2 weeks prior to colonoscopy procedure improves patient understanding of the risks of colonscopy.
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Workplace exercise for physical and psychological health
This study will investigate the effects of a workplace exercise intervention on cardiovascular disease risk, physical fitness and psychological health in adults aged 18-65 years working within an academic institution. It is hypothesised that adherence to a regular exercise program will result in decreased cardiovascular disease risk and increase physical fitness and psychological health.
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Improving cardiovascular health among smokers with and without mental health problems: The iHeLP (healthy lifestyles) pilot trial
This project aims to increase the accessibility of an innovative, evidence-based psychological treatment (Healthy Lifestyles Treatment) for reducing tobacco use, improving cardiovascular and mental health among tobacco smokers with depression, psychosis, or neither of these conditions, by translating it to internet-based delivery (iHeLP) and running a small-scale pilot study of the efficacy of this mode of delivery of treatment.