Medicine (RMH) - Research Publications
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ItemNo Preview AvailablePrevalence and risk factors for symptoms of common mental disorders in early and late pregnancy in Vietnamese women: A prospective population-based study(Elsevier, 2013-04-05)BACKGROUND: Little is known about the prevalence of and risk factors for common mental disorders (CMD) in pregnant women in low-income countries. The aim of this study was to establish the prevalence of and psychosocial risk factors for clinically significant symptoms of CMD in early and late pregnancy in women in rural Viet Nam. METHODS: A population-based sample of women was surveyed in early and late pregnancy. CMD were assessed by the Edinburgh Postnatal Depression Scale-Viet Nam Validation and psychosocial risks by study-specific structured interviews. RESULTS: In total 497/523 (97%) eligible women were recruited and 419 (84%) provided complete data. Prevalence of CMD only in early pregnancy was 22.4% (95% CI 18.4-26.4); only in late pregnancy was 10.7% (95% CI 7.8-13.7) and at both assessment waves was 17.4% (95% CI 13.8-21.1). Non-economic and economic coincidental life adversity, intimate partner violence, past pregnancy loss, and childhood abuse were positively associated with persistent antenatal CMD. Older age, having a preference for the baby's sex, and nulli- or primiparity were risk factors for CMD in early pregnancy. CONCLUSIONS: Persistent antenatal CMD are prevalent in rural areas of Viet Nam. Psychosocial risk factors play a major role in this significant public health problem.
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ItemSupportive Care Needs following Cancer Treatment: A Comparison of Breast and Brain Cancer in an Australian Cohort(Hindawi Publishing Corporation, 2014)Objective. To assess and identify patient-reported supportive care needs following definitive treatment in persons with breast cancer (BC) and primary brain tumours (gliomas) (BT) in an Australian community cohort and to assess the commonalities and/or discrepancies of the reported needs in these oncological populations. Methods. A prospective cross-sectional survey of persons with BC () and BT () using questionnaires for supportive care needs, psychological morbidity, and quality of life. Results. BT participants were younger than BC patients (mean ages 51 and 57 years). The median time since diagnosis for both groups was over 2 years. The level of psychological morbidity, mainly depression, was high in both groups: BC (22%) and BT (20%). Participants in both groups reported at least one need (“met” or “unmet”). The BC patients reported higher numbers of “needs” and “unmet” needs compared with BT patients (mean 13.7 versus 11.6 needs; “unmet” needs mean 6.0 versus 4.1). The common “met” and “unmet” needs highlighted by both groups were comparable; the domain for most “met” needs included comprehensive cancer care, while “unmet” needs related to existential survivorship issues. Conclusion. Despite successful treatment many cancer survivors experience unmet supportive care needs in longer term. Understanding the impact of these beyond the acute phase is important as care shifts to community settings. More research in existential survivorship issues is needed.
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ItemA protocol for an exploratory phase I mixed-methods study of enhanced integrated care for care home residents with advanced dementia: the Compassion Intervention(BMJ PUBLISHING GROUP, 2014)INTRODUCTION: In the UK approximately 700,000 people are living with, and a third of people aged over 65 will die with, dementia. People with dementia may receive poor quality care towards the end of life. We applied a realist approach and used mixed methods to develop a complex intervention to improve care for people with advanced dementia and their family carers. Consensus on intervention content was achieved using the RAND UCLA appropriateness method and mapped to sociological theories of process and impact. Core components are: (1) facilitation of integrated care, (2) education, training and support, (3) investment from commissioners and care providers. We present the protocol for an exploratory phase I study to implement components 1 and 2 in order to understand how the intervention operates in practice and to assess feasibility and acceptability. METHODS AND ANALYSIS: An 'Interdisciplinary Care Leader (ICL)' will work within two care homes, alongside staff and associated professionals to facilitate service integration, encourage structured needs assessment, develop the use of personal and advance care plans and support staff training. We will use qualitative and quantitative methods to collect data for a range of outcome and process measures to detect effects on individual residents, family carers, care home staff, the intervention team, the interdisciplinary team and wider systems. Analysis will include descriptive statistics summarising process and care home level data, individual demographic and clinical characteristics and data on symptom burden, clinical events and quality of care. Qualitative data will be explored using thematic analysis. Findings will inform a future phase II trial. ETHICS AND DISSEMINATION: Ethical approval was granted (REC reference 14/LO/0370). We shall publish findings at conferences, in peer-reviewed journals, on the Marie Curie Cancer Care website and prepare reports for dissemination by organisations involved with end-of-life care and dementia.
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ItemEndovascular stenting for atherosclerotic subclavian artery stenosis in patients with other craniocervical artery stenosis(SPRINGER, 2013-01)Atherosclerotic subclavian artery stenosis (SAS) accompanied with other craniocervical artery stenosis (OCAS) is not uncommon in practice. We sought to investigate the safety and efficacy of endovascular stenting for SAS in patients with OCAS. Between January 2004 and February 2012, 71 consecutive atherosclerotic SAS patients who underwent primary stenting in our medical center were included. The enrolled patients were divided into combined-SAS group (n = 51) and solitary-SAS group (n = 20) depending on the presence or absence of OCAS. Data of demographics, procedure, and the followed-up were retrieved and analyzed. The technical success rate was 95.8%; the clinical success rate was 90.1%. There was no catheter-related major stroke or death. The immediate outcomes had no statistical difference between groups. During a mean of 27 ± 20 months (range 2-88 months) followed-up, 7 (10.3%) restenosis and 12 (17.6%) clinical events were identified. The primary patency rate was 95.3, 84.9 and 84.9% at 12, 24 months, and final followed-up respectively, which had no statistical difference between groups (odds ratio (OR), 2.60; 95% confidence interval (CI), 0.54-12.53; P = 0.232). The overall clinical event-free survival rate was 93.5, 86.2 and 54.6%, respectively, where the result of combined-SAS group was inferior to that of the solitary-SAS group (OR, 3.34; 95% CI, 1.02-11.00; P = 0.047). Endovascular stenting was safe and feasible for atherosclerotic SAS in patients with OCAS, although the combined OCAS may have a significant influence on the long-term outcome. Further studies are warrant to investigate the effects of revascularization for multiple craniocervical artery stenoses on the cerebral hemodynamics and long-term outcomes.
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ItemFactors associated with long-term functional outcomes, psychological sequelae and quality of life in persons after primary brain tumour(SPRINGER, 2013-02)To examine factors impacting long-term functional outcomes and psychological sequelae in persons with primary brain tumours (BT) in an Australian community cohort. Participants (n = 106) following definitive treatment for BT in the community were reviewed in rehabilitation clinics to assess impact on participants' current activity and restriction in participation, using validated questionnaires: Functional Independence Measure (FIM), Perceived Impact Problem Profile (PIPP), Depression Anxiety Stress Scale, Cancer Rehabilitation Evaluation System-Short Form and Cancer Survivor Unmet Needs Measure. Mean age of the participants was 51 years (range 21-77 years), majority were female (56 %) with median time since BT diagnosis 2.1 years and a third (39 %) had high grade tumours. Majority showed good functional recovery (median motor FIM score 75). Over half reported pain (56 %), of which 42 % had headaches. Other impairments included: ataxia (44 %), seizures (43 %); paresis (37 %), cognitive dysfunction (36 %) and visual impairment (35 %). About 20 % reported high levels of depression, compared with only 13 % in an Australian normative sample. Two-third (60 %) participants reported highest impact on the PIPP subscales for psychological wellbeing (scores of >3 on 6-point scale) and participation (45 %). Factors significantly associated with poorer current level of functioning and wellbeing included: younger participants (≤40 years), recent diagnoses, aggressive tumour types and presence of pain. No significant differences in scale scores were found across various treatments (surgery, chemotherapy or radiotherapy) on outcomes used. Rehabilitation for BT survivors is challenging and requires long-term management of psychological sequelae impacting activity and participation. More research into participatory limitation is needed to guide treating clinicians.
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ItemAssociations Between Fibrocytes and Postcontrast Myocardial T1 Times in Hypertrophic Cardiomyopathy(WILEY, 2013-10)BACKGROUND: Fibrocytes are bone marrow-derived mesenchymal progenitors that have been linked to various fibrotic disorders. This study was undertaken to investigate whether fibrocytes are increased in diffuse myocardial fibrosis in humans. METHODS AND RESULTS: Thirty-seven patients with hypertrophic cardiomyopathy (HCM) and 20 healthy controls were recruited. Cardiac magnetic resonance imaging with postcontrast T1 mapping was performed to non-invasively quantify diffuse myocardial fibrosis and these patients were classified into 2 groups (T1 < 470 ms or T1 ≥ 470 ms, as likely or unlikely to have diffuse fibrosis, respectively). Circulating fibrocytes (CD45+/CD34+/collagen I+) were measured by flow cytometry. Peripheral blood mononuclear cells (PBMCs) were cultured for 13 days and fibrocytes were quantitated by flow cytometry (CD45+/collagen I+) and real-time PCR (gene expression of matrix proteins). Plasma cytokines/chemokines mediating fibrocyte trafficking and differentiation were measured by multiplex assays. Circulating fibrocytes were decreased in HCM patients compared to controls. The proportion of fibrocytes derived from PBMCs was increased in patients with diffuse fibrosis compared with those without or controls (31.1 ± 4.1% versus 18.9 ± 3.9% and 10.9 ± 2.0%, P < 0.05 and P < 0.001, respectively), and the proportion of fibrocytes was inversely correlated with T1 time (r = -0.37, P = 0.03). Plasma levels of stromal cell-derived factor-1 were elevated in patients with diffuse fibrosis compared with those without or controls (5131 ± 271 pg/mL versus 3893 ± 356 pg/mL and 4172 ± 185 pg/mL, respectively, both P < 0.05). CONCLUSIONS: HCM patients with diffuse fibrosis as assessed by postcontrast T1 mapping have elevated plasma SDF and an enhanced ability of PBMCs to differentiate into fibrocytes, suggesting that fibrocytes may contribute to the pathogenesis of myocardial fibrosis.
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ItemUrocortin protects chondrocytes from NO-induced apoptosis: a future therapy for osteoarthritis?(Springer Science and Business Media LLC, 2013-07-11)Osteoarthritis (OA) is characterized by a loss of joint mobility and pain resulting from progressive destruction and loss of articular cartilage secondary to chondrocyte death and/ or senescence. Certain stimuli including nitric oxide (NO) and the pro-inflammatory cytokine tumor necrosis factor α (TNF-α have been implicated in this chondrocyte death and the subsequent accelerated damage to cartilage. In this study, we demonstrate that a corticotrophin releasing factor (CRF) family peptide, urocortin (Ucn), is produced by a human chondrocyte cell line, C-20/A4, and acts both as an endogenous survival signal and as a cytoprotective agent reducing the induction of apoptosis by NO but not TNF-α when added exogenously. Furthermore, treatment with the NO donor S-nitroso-N-acetyl-D-L-penicillamine upregulates chondrocyte Ucn expression, whereas treatment with TNF-α does not. The chondroprotective effects of Ucn are abolished by both specific ligand depletion (with an anti-Ucn antibody) and by CRF receptor blockade with the pan-CRFR antagonist α-helical CRH(9-41). CRFR expression was confirmed by reverse transcription-PCR with subsequent amplicon sequence analysis and demonstrates that C-20/A4 cells express both CRFR1 and CRFR2, specifically CRFR1α and CRFR2β. Protein expression of these receptors was confirmed by western blotting. The presence of both Ucn and its receptors in these cells, coupled with the induction of Ucn by NO, suggests the existence of an endogenous autocrine/paracrine chondroprotective mechanism against stimuli inducing chondrocyte apoptosis via the intrinsic/mitochondrial pathway.
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ItemComparisons between intragastric and small intestinal delivery of enteral nutrition in the critically ill: a systematic review and meta-analysis(BMC, 2013)INTRODUCTION: The largest cohort of critically ill patients evaluating intragastric and small intestinal delivery of nutrients was recently reported. This systematic review included recent data to compare the effects of small bowel and intragastric delivery of enteral nutrients in adult critically ill patients. METHODS: This is a systematic review of all randomised controlled studies published between 1990 and March 2013 that reported the effects of the route of enteral feeding in the critically ill on clinically important outcomes. RESULTS: Data from 15 level-2 studies were included. Small bowel feeding was associated with a reduced risk of pneumonia (Relative Risk, RR, small intestinal vs. intragastric: 0.75 (95% confidence interval 0.60 to 0.93); P=0.01; I2=11%). The point estimate was similar when only studies using microbiological data were included. Duration of ventilation (weighted mean difference: -0.36 days (-2.02 to 1.30); P=0.65; I2=42%), length of ICU stay (WMD: 0.49 days, (-1.36 to 2.33); P=0.60; I2=81%) and mortality (RR 1.01 (0.83 to 1.24); P=0.92; I2=0%) were unaffected by the route of feeding. While data were limited, and there was substantial statistical heterogeneity, there was significantly improved nutrient intake via the small intestinal route (% goal rate received: 11% (5 to 16%); P=0.0004; I2=88%). CONCLUSIONS: Use of small intestinal feeding may improve nutritional intake and reduce the incidence of ICU-acquired pneumonia. In unselected critically ill patients other clinically important outcomes were unaffected by the site of the feeding tube.
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ItemFive Years of Acute Stroke Unit Care: Comparing ASU and Non-ASU Admissions and Allied Health Involvement(HINDAWI LTD, 2014)Background. Evidence indicates that Stroke Units decrease mortality and morbidity. An Acute Stroke Unit (ASU) provides specialised, hyperacute care and thrombolysis. John Hunter Hospital, Australia, admits 500 stroke patients each year and has a 4-bed ASU. Aims. This study investigated hospital admissions over a 5-year period of all strokes patients and of all patients admitted to the 4-bed ASU and the involvement of allied health professionals. Methods. The study retrospectively audited 5-year data from all stroke patients admitted to John Hunter Hospital (n = 2525) and from nonstroke patients admitted to the ASU (n = 826). The study's primary outcomes were admission rates, length of stay (days), and allied health involvement. Results. Over 5 years, 47% of stroke patients were admitted to the ASU. More male stroke patients were admitted to the ASU (chi(2) = 5.81; P = 0.016). There was a trend over time towards parity between the number of stroke and nonstroke patients admitted to the ASU. When compared to those admitted elsewhere, ASU stroke patients had a longer length of stay (z = -8.233; P = 0.0000) and were more likely to receive allied healthcare. Conclusion. This is the first study to report 5 years of ASU admissions. Acute Stroke Units may benefit from a review of the healthcare provided to all stroke patients. The trends over time with respect to the utilisation of the John Hunter Hospitall's ASU have resulted in a review of the hospitall's Stroke Unit and allied healthcare.