5 results on '"G., Hamilton"'
Search Results
2. Long-term outcomes following percutaneous coronary intervention to an unprotected left main coronary artery in cardiogenic shock.
- Author
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Yeoh J, Andrianopoulos N, Reid CM, Yudi MB, Hamilton G, Freeman M, Noaman S, Oqueli E, Picardo S, Brennan A, Chan W, Stub D, Duffy S, Farouque O, Ajani A, and Clark DJ
- Subjects
- Australia epidemiology, Coronary Vessels, Humans, Shock, Cardiogenic diagnosis, Shock, Cardiogenic therapy, Stroke Volume, Treatment Outcome, Ventricular Function, Left, Coronary Artery Disease, Myocardial Infarction, Percutaneous Coronary Intervention adverse effects
- Abstract
Background: In cardiogenic shock with severe left main coronary artery stenosis (LM), limited information exists on short and longer-term outcomes. We sought to determine the outcomes of unprotected LM PCI in cardiogenic shock., Methods: Excluding patients with previous CABG, consecutive patients undergoing PCI in cardiogenic shock from the Melbourne Intervention Group registry between 2005 and 2013 were analysed. Those post LM PCI were compared to those post non-LM PCI. Patient and procedural data were collected with 30-day and 12-month follow-up. Australian National Death Index linkage was performed for long-term mortality analysis., Results: After excluding previous CABG, 18,069 procedures were performed during 1st January 2005 to 30th November 2013, 601 procedures in the setting of cardiogenic shock. Of these, 45 were performed to an isolated LM and 556 to a non-LM. Those with LM PCI were older and more likely to have a baseline left ventricular ejection fraction (LVEF) of <45%. The in-hospital, 30-day, 12-month and long-term mortality to 9 years in cardiogenic shock after LM PCI was 64.4%, 66.7%, 73.3% and 80.0% compared to 36.5%, 36.9%, 40.5% and 46.0%, after non-LM PCI (p < 0.001). On multivariate analysis, LM PCI was a significant independent predictor of long-term mortality (HR1.59, 95%CI 1.00-2.53, p = 0.048). Landmark analysis of survivors to discharge found the long-term mortality of LM PCI approaches 60% compared to 27% for those with non-LM PCI (p = 0.003)., Conclusion: Long-term outcomes after PCI to LM in cardiogenic shock are poor, with much of the excess in mortality occurring early. However, reasonable long-term survival was found beyond the initial high-risk period., (Copyright © 2020. Published by Elsevier B.V.)
- Published
- 2020
- Full Text
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3. Prevalence of pre-existing dysglycaemia among inpatients with acute coronary syndrome and associations with outcomes.
- Author
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Mahendran DC, Hamilton G, Weiss J, Churilov L, Lew J, Khoo K, Lam Q, Robbins R, Hart GK, Johnson D, Hare DL, Farouque O, Zajac JD, and Ekinci EI
- Subjects
- Aged, Aged, 80 and over, Australia epidemiology, Female, Humans, Male, Middle Aged, Prevalence, Prognosis, Prospective Studies, Acute Coronary Syndrome epidemiology, Diabetes Mellitus physiopathology, Hospitalization statistics & numerical data, Inpatients statistics & numerical data, Prediabetic State physiopathology
- Abstract
Aims: We aimed to confirm the hypothesis that dysglycaemia including in the pre-diabetes range affects a majority of patients admitted with acute coronary syndrome (ACS) and is associated with worse outcomes., Methods: In this prospective observational cohort study, consecutive inpatients aged ≥ 54 years with ACS were uniformly tested and categorised into diabetes (prior diagnosis/ HbA1c ≥ 6.5%, ≥48 mmol/mol), pre-diabetes (HbA1c 5.7-6.4%, 39-47 mmol/mol) and no diabetes (HbA1c ≤ 5.6%, ≤38 mmol/mol) groups., Results: Over two years, 847 consecutive inpatients presented with ACS. 313 (37%) inpatients had diabetes, 312 (37%) had pre-diabetes and 222 (25%) had no diabetes. Diabetes, compared with no diabetes, was associated with higher odds of acute pulmonary oedema (APO, odds ratio, OR 2.60, p < 0.01), longer length of stay (LOS, incidence rate ratio, IRR 1.18, p = 0.02) and, 12-month ACS recurrence (OR 1.86, p = 0.046) after adjustment, while no significant associations were identified for pre-diabetes. Analysed as a continuous variable, every 1% (11 mmol/mol) increase in HbA1c was associated with increased odds of APO (OR 1.28, P = 0.002) and a longer LOS (IRR 1.05, P = 0.03)., Conclusions: The high prevalence of dysglycaemia and association with poorer clinical outcomes justifies routine HbA1c testing to identify individuals who may benefit from cardioprotective anti-hyperglycaemic agents and, lifestyle modification to prevent progression of pre-diabetes., (Copyright © 2019 Elsevier B.V. All rights reserved.)
- Published
- 2019
- Full Text
- View/download PDF
4. One-Year Outcomes of Patients With Established Coronary Artery Disease Presenting With Acute Coronary Syndromes.
- Author
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Murphy A, Hamilton G, Andrianopoulos N, Yudi MB, Farouque O, Duffy SJ, Lefkovits J, Brennan A, Reid CM, Ajani AE, and Clark DJ
- Subjects
- Acute Coronary Syndrome epidemiology, Acute Coronary Syndrome etiology, Aged, Australia epidemiology, Coronary Artery Disease complications, Coronary Artery Disease epidemiology, Electrocardiography, Female, Follow-Up Studies, Hospital Mortality trends, Humans, Incidence, Male, Middle Aged, Retrospective Studies, Risk Factors, Survival Rate trends, Time Factors, Acute Coronary Syndrome surgery, Coronary Artery Disease surgery, Percutaneous Coronary Intervention methods, Registries
- Abstract
The risk of major adverse cardiovascular events (MACE) remains high in patients with established coronary artery disease (CAD). The aim of this study was to assess the prognostic significance of established CAD in patients who present with acute coronary syndromes (ACS) using a large established multicenter registry. Consecutive patients from the Melbourne Interventional Group registry who presented with ACS and underwent percutaneous coronary intervention from 2005 to 2015 were included. Patients with a history of myocardial infarction, percutaneous coronary intervention, or coronary artery bypass graft surgery were included in the established CAD cohort. The primary end points were 12-month mortality and 12-month MACE. Of the 12,878 ACS patients included in our study, 3,542 (28%) patients had established CAD. Over the 10-year study period, the proportion of patients presenting with established CAD decreased (30.7% to 25.2%; p-for-overall-trend <0.001). Non-ST elevation myocardial infarction was the most prominent presentation in the established CAD cohort (45.1%) whereas ST-elevation myocardial infarction was the most prominent in the de novo CAD cohort (51%; p< 0.001). The patients in the established CAD cohort were older, had more co-morbidities and were more likely to present with high-risk features such as atrial fibrillation, left main disease, multivessel CAD and left ventricular dysfunction (all p < 0.001). Regarding revascularization in ST-elevation myocardial infarction presentations, symptom-to-door time was shorter, whereas door-to-balloon-time was longer in those with established CAD (p < 0.001). On multivariate analysis, established CAD was an independent risk factor for 12-month MACE (odds ratio 1.40, 95% confidence intervals 1.23 to 1.58, p < 0.001), but not for 12-month mortality (odds ratio 1.08, 95% confidence intervals 0.77 to 1.52, p = 0.66). In conclusion, patients with a history of myocardial infarction or previous revascularization have a higher rate of MACE at 12 months. Despite this they do not appear to suffer from higher mortality., (Crown Copyright © 2019. Published by Elsevier Inc. All rights reserved.)
- Published
- 2019
- Full Text
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5. Expressions of shame in investigative interviews with Australian Aboriginal children.
- Author
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Hamilton G, Brubacher SP, and Powell MB
- Subjects
- Adolescent, Australia, Child, Child, Preschool, Female, Humans, Interviews as Topic, Male, Qualitative Research, Shame
- Abstract
This study inspected a sample of 70 interview transcripts with Australian Aboriginal children to gain a sense of how frequently verbal shame responses were occurring in investigative interviews regarding alleged sexual abuse. Transcripts were examined to determine how children articulated shame, how interviewers reacted to these responses, and how shame related to children's accounts. Examination of frequencies revealed that verbal shame responses occurred in just over one-quarter of the interviews. One-way analyses of variance indicated that children who expressed shame within the interview spoke the same amount as children who did not express shame, however, they required more interviewer prompts before a disclosure was made. Interviews where children expressed shame also included a greater number of interviewer reminders compared to interviews without shame responses. Results emphasize the importance of interviewer awareness of shame, and also point to the value of reassurance, patience, and persistence with non-leading narrative prompting when interviewing children who express shame during discussions of sexual abuse., (Copyright © 2015 Elsevier Ltd. All rights reserved.)
- Published
- 2016
- Full Text
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