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Biswas S, Dinh D, Lefkovits J, Ajani A, Duffy S, Brennan A, Chan W, Bluzstein D, Clark D, Hiew C, Oqueli E, Reid C, Stub D, Eccleston D. Gradient of Outcomes by Treatment Intensity in Patients with Diabetes Mellitus Undergoing Percutaneous Coronary Intervention. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Al-mukhtar O, Bilgrami I, Noaman S, Lapsley R, Marane C, Groen F, Cutter H, Cox N, Chan W. Cardiac Arrest in The Cardiac Catheterisation Laboratory (CCL): Initial Experience with the Role of Simulation Set-up and Training. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Dashwood A, Chui F, Laher S, Vale C, Chan W, McKenzie S, Wong Y. Hypophosphataemia is Common After Intravenous Ferric Carboxymaltose Infusion Among Patients with Symptomatic Heart Failure. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Dagan M, Dinh D, Murphy A, Tan C, Brennan A, Warren J, Ajani A, Freeman M, Shaw J, Chan W, Reid C, Andrianopoulos N, Clark D, Duffy S. Gender Disparity in Secondary Prevention Medication and Outcomes Following Percutaneous Coronary Intervention for Acute Coronary Syndrome. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Dawson L, Dinh D, Duffy S, Clark D, Reid C, Brennan A, Andrianopoulos N, Hiew C, Freeman M, O’Queli E, Chan W, Ajani A. An Overview of the Melbourne Interventional Group Registry: Results from 34,797 Percutaneous Coronary Intervention Procedures 2005–2017. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Davis JC, Dian L, Parmar N, Madden K, Khan KM, Chan W, Cheung W, Rogers J, Liu-Ambrose T. Geriatrician-led evidence-based Falls Prevention Clinic: a prospective 12-month feasibility and acceptability cohort study among older adults. BMJ Open 2018; 8:e020576. [PMID: 30518579 PMCID: PMC6286621 DOI: 10.1136/bmjopen-2017-020576] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE We assessed the feasibility and acceptability of delivering a geriatrician-led evidence-based Falls Prevention Clinic to older adults with a history of falls. DESIGN 12-month prospective cohort study. SETTING Vancouver Falls Prevention Clinic, Vancouver, British Columbia, Canada (www.fallsclinic.ca). PARTICIPANTS 188 community-dwelling older adults aged ≥70 years who received a baseline assessment at the Vancouver Falls Prevention Clinic due to having had at least one fall resulting in medical attention in the previous 12 months. Fifty-six per cent of participants were also participating in a randomised controlled trial. MEASUREMENTS Feasibility was ascertained by measuring demand (clinic attendance). Acceptability was measured by compliance with recommendations, completion of monthly fall calendars and patient experience. RESULTS The attendance was 65% of those eligible and invited. This indicates feasibility for demand. 155 received at least one of the following clinical management recommendations from four domains (compliance reported in %): (1) medication changes (78%); (2) exercise prescription (58%); (3) referrals to other healthcare professionals (78%); and/or (4) lifestyle modifications (35%) excluding exercise. Overall compliance to all recommendations was 69%. Patient experience was related to factors impacting patient perceived physical benefit and attributes influencing patient satisfaction. CONCLUSION This study demonstrated the feasibility and acceptability of a multifactorial intervention approach based on best available evidence-based medicine.
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Noaman S, Andrianopoulos N, Reid C, Sharma A, Chan W, O'Brien J, Clark D, Ajani A, Freeman M, Brennan A, Yip T, Duffy SJ, Oqueli E. P812Clinical outcomes of ST-elevation myocardial infarction secondary to stent thrombosis treated by percutaneous coronary intervention. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Koslovsky MD, Swartz MD, Leon-Novelo L, Chan W, Wilkinson AV. Using the EM algorithm for Bayesian variable selection in logistic regression models with related covariates. J STAT COMPUT SIM 2018; 88:575-596. [PMID: 29731525 DOI: 10.1080/00949655.2017.1398255] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
We develop a Bayesian variable selection method for logistic regression models that can simultaneously accommodate qualitative covariates and interaction terms under various heredity constraints. We use expectation-maximization variable selection (EMVS) with a deterministic annealing variant as the platform for our method, due to its proven flexibility and efficiency. We propose a variance adjustment of the priors for the coefficients of qualitative covariates, which controls false-positive rates, and a flexible parameterization for interaction terms, which accommodates user-specified heredity constraints. This method can handle all pairwise interaction terms as well as a subset of specific interactions. Using simulation, we show that this method selects associated covariates better than the grouped LASSO and the LASSO with heredity constraints in various exploratory research scenarios encountered in epidemiological studies. We apply our method to identify genetic and non-genetic risk factors associated with smoking experimentation in a cohort of Mexican-heritage adolescents.
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Mak CM, Lam C, Siu W, Law C, Chan W, Lee HC, Chong Y, Chen SR, Ching C, Wong C, Lee M, Chow K, Lee K, Chan W, Chan K, Lee SY, Chan YW. OPathPaed service model for expanded newborn screening in Hong Kong SAR, China. Br J Biomed Sci 2018; 70:84-8. [DOI: 10.1080/09674845.2013.11978266] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
AbstractSurgical fluid replacement is a critical issue in medicine as the fluid volume excess or deficit can both complicate the patient’s condition. Currently, the administration of fluid volume is carried out primarily based on the experience and expertise of the anaesthetist as there is no analytical method available to estimate the patient’s fluid level. The development of a decision support system (DSS) to assist the anaesthetist in estimating the required fluid infusion rate for a particular patient has been the focus of this research paper. The DSS is developed based on Fuzzy Logic Control (FLC) technique which is ideal for developing input/output models in an unstructured and/or complex environment. The fuzzy rules used in the DSS are derived automatically from the clinical data produced in surgical operations. The DSS employs a Multi Rule Base (MRB) learning scheme to adapt its model according to the significant variation in the physiological parameters of a patient. The performance of the developed algorithms is validated through experimental work using clinical data. The results obtained so far are encouraging.
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Chan W, Wang Z, Bird S, Yu C, Ridley L, Ho-Shon K, Magnussen J, Naoum C. Clinical Audit of Contemporary Radiation Doses in a University Hospital Coronary Computed Tomography Angiography Practice. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Dashwood A, Laher S, Menon N, Thomson B, Prabhu A, Tesar P, Ziegenfuss M, Smith I, Javorsky G, Platts D, McKenzie S, Chan W, Bancroft J, Maddicks-Law J, Wong Y. Validation of EUROMACS-RHF (European Registry for Patients with Mechanical Circulatory Support Right-Sided Heart Failure) Score in Predicting Early Right Heart Failure Following Left Ventricular Assist Device Insertion in an Australian Single-Centre Cohort. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Vale C, Chan W. The Effect of Pristinamycin on Mycophenolate Levels in Heart Transplant Recipients. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lo B, Prosberg MV, Gluud LL, Chan W, Leong RW, van der List E, van der Have M, Sarter H, Gower-Rousseau C, Peyrin-Biroulet L, Vind I, Burisch J. Systematic review and meta-analysis: assessment of factors affecting disability in inflammatory bowel disease and the reliability of the inflammatory bowel disease disability index. Aliment Pharmacol Ther 2018; 47:6-15. [PMID: 28994131 DOI: 10.1111/apt.14373] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 07/31/2017] [Accepted: 09/20/2017] [Indexed: 12/15/2022]
Abstract
BACKGROUND The Inflammatory Bowel Disease Disability Index (IBD-DI) has recently been developed for patients with Crohn's disease (CD) and ulcerative colitis (UC). AIM To assess the severity of disability and associated factors using the IBD-DI, and review the validity of the IBD-DI as a tool. METHOD Systematic review of cross-sectional studies. Patients included had UC or CD and were classified as active, in remission, or needing surgery, biological and/or steroid treatment. We included studies assessing disability using the IBD-DI and that were captured by electronic and manual searches (January 2017). The possibility of bias was evaluated with the Newcastle-Ottawa Scale. RESULTS Nine studies were included with 3167 patients. Comparatively, patients with active disease had higher disability rates than those in remission (SMD [CI95] = 1.49[1.11, 1.88], I2 = 94%, P<.01), while patients on biological treatment had lower disability rates than those receiving corticosteroid treatment (SMD [CI95] = -0.22[-0.36, -0.08], I2 = 0%, P<.01). Disease activity and unemployment were found to be associated factors. The IBD-DI scored "good" for internal consistency, "fair" to "excellent" for intra-rater reliability and "excellent" for inter-rater reliability. Construct validity was "moderately strong" to "very strong" and structural validity was found to be mainly unidimensional. The IBD-DI had excellent responsiveness, while its interpretability was only useful on a group level. CONCLUSIONS This systematic review and meta-analysis found a significant association between disease activity, treatment received and disability; although significant heterogeneity was found. The IBD-DI is reliable and valid, but further studies are needed to measure its interpretability.
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Biswas S, Andrianopoulos N, Noaman S, Duffy S, Lefkovits J, Brennan A, Ajani A, Clark D, Freeman M, Oqueli E, Reid C, Stub D, Chan W. Impact of Extreme Obesity on Outcomes Following Percutaneous Coronary Intervention: Insights From a Large Multi-Centre Registry. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Burgess S, Bing R, Zhao J, Papapostolou S, Chan W, Juergens C, Ong A, Kurup R, Ng M, Kritharides L, Lo S, Yong A. A Rapidly Applicable Simplified SYNTAX Score Retains High Sensitivity and Specificity in Complex Coronary Artery Disease: A Multicentre Study. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Al-mukhtar O, Noaman S, Cheng Y, Seman M, Mulligan A, Cox N, Chan W. Pollen Count Association With Coronary Artery Disease in Patients Undergoing Percutaneous Coronary Intervention in Melbourne. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Dashwood A, Laher S, Wang C, Prabhu A, Tesar P, Ziegenfuss M, Wong Y, Javorsky G, Smith I, Platts D, Chan W, McKenzie S, Bancroft J, Maddicks-Law J, Thomson B. Single-Centre Experience of Durable Bi-Ventricular Support with HeartWare Continuous Flow, Centrifugal Ventricular Assist Devices (HeartWare BiVADs). Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Fernando H, Noaman S, Snell G, Dart A, Shaw J, Chan W. Incidence and Predictors of Coronary Artery Disease in Patients Evaluated for Lung Transplantation. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lwin M, Challa A, Maxwell R, Radford D, Hayward E, Chan W. Intermittent Levosimendan to Maintain Quality of Life in an Ambulatory Patient with End-Stage Heart Failure with Complex Congenital Heart Disease. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lau K, Bancroft J, McKenzie S, Javorsky G, Chan W, Wong Y, Thomson B, Prabhu A, Fraser J, Platts D. Explant of Heartware Biventricular Assist Devices Following Myocardial Recovery After Peripartum Cardiomyopathy. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Chan W, Maxwell R, Malpas T, Radford D. The Prevalence of Obesity in an Australian Cohort of Adult Patients With Congenital Heart Disease. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Mitrev N, Vande Casteele N, Seow CH, Andrews JM, Connor SJ, Moore GT, Barclay M, Begun J, Bryant R, Chan W, Corte C, Ghaly S, Lemberg DA, Kariyawasam V, Lewindon P, Martin J, Mountifield R, Radford-Smith G, Slobodian P, Sparrow M, Toong C, van Langenberg D, Ward MG, Leong RW. Review article: consensus statements on therapeutic drug monitoring of anti-tumour necrosis factor therapy in inflammatory bowel diseases. Aliment Pharmacol Ther 2017; 46:1037-1053. [PMID: 29027257 DOI: 10.1111/apt.14368] [Citation(s) in RCA: 201] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 08/06/2017] [Accepted: 09/19/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND Therapeutic drug monitoring (TDM) in inflammatory bowel disease (IBD) patients receiving anti-tumour necrosis factor (TNF) agents can help optimise outcomes. Consensus statements based on current evidence will help the development of treatment guidelines. AIM To develop evidence-based consensus statements for TDM-guided anti-TNF therapy in IBD. METHODS A committee of 25 Australian and international experts was assembled. The initial draft statements were produced following a systematic literature search. A modified Delphi technique was used with 3 iterations. Statements were modified according to anonymous voting and feedback at each iteration. Statements with 80% agreement without or with minor reservation were accepted. RESULTS 22/24 statements met criteria for consensus. For anti-TNF agents, TDM should be performed upon treatment failure, following successful induction, when contemplating a drug holiday and periodically in clinical remission only when results would change management. To achieve clinical remission in luminal IBD, infliximab and adalimumab trough concentrations in the range of 3-8 and 5-12 μg/mL, respectively, were deemed appropriate. The range may differ for different disease phenotypes or treatment endpoints-such as fistulising disease or to achieve mucosal healing. In treatment failure, TDM may identify mechanisms to guide subsequent decision-making. In stable clinical response, TDM-guided dosing may avoid future relapse. Data indicate drug-tolerant anti-drug antibody assays do not offer an advantage over drug-sensitive assays. Further data are required prior to recommending TDM for non-anti-TNF biological agents. CONCLUSION Consensus statements support the role of TDM in optimising anti-TNF agents to treat IBD, especially in situations of treatment failure.
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Noaman S, Vogrin S, Goh C, Cheng Y, Brennan A, Andrianopoulos N, Dinh D, Lefkovits J, Reid C, Walton A, Stub D, Cox N, Chan W. P5583Comparison of short-term clinical outcomes of proximal versus non-proximal culprit lesion in patients treated with primary percutaneous coronary intervention for ST-elevation myocardial infarction. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Biswas S, Duffy S, Lefkovits J, Andrianopoulos N, Brennan A, Walton A, Shaw J, Chan W, Ajani A, Clark D, Freeman M, Hiew C, Oqueli Flores E, Reid C, Stub D. P5606Evolving trends in procedural characteristics and clinical outcomes in patients undergoing percutaneous coronary intervention for ST-elevation myocardial infarction. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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