10 results on '"M. Jayarajah"'
Search Results
2. Aspirin in coronary artery surgery: 1-year results of the Aspirin and Tranexamic Acid for Coronary Artery Surgery trial.
- Author
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Myles PS, Smith JA, Kasza J, Silbert B, Jayarajah M, Painter T, Cooper DJ, Marasco S, McNeil J, Bussières JS, McGuinness S, Chan MTV, Wallace S, and Forbes A
- Subjects
- Aged, Antifibrinolytic Agents adverse effects, Aspirin adverse effects, Coronary Artery Disease diagnostic imaging, Coronary Artery Disease mortality, Coronary Thrombosis etiology, Coronary Thrombosis mortality, Coronary Thrombosis prevention & control, Disability Evaluation, Double-Blind Method, Female, Fibrinolytic Agents adverse effects, Hemorrhage chemically induced, Hemorrhage mortality, Hemorrhage prevention & control, Humans, Male, Middle Aged, Myocardial Infarction etiology, Myocardial Infarction mortality, Myocardial Infarction prevention & control, Progression-Free Survival, Risk Factors, Time Factors, Tranexamic Acid adverse effects, Antifibrinolytic Agents administration & dosage, Aspirin administration & dosage, Coronary Artery Bypass adverse effects, Coronary Artery Bypass mortality, Coronary Artery Disease surgery, Fibrinolytic Agents administration & dosage, Tranexamic Acid administration & dosage
- Abstract
Background: Aspirin may reduce the risk of vascular graft thrombosis after cardiovascular surgery. We previously reported the 30-day results of a trial evaluating aspirin use before coronary artery surgery. Here we report the 1-year outcomes evaluating late thrombotic events and disability-free survival., Methods: Using a factorial design, we randomly assigned patients undergoing coronary artery surgery to receive aspirin or placebo and tranexamic acid or placebo. The results of the aspirin comparison are reported here. The primary 1-year outcome was death or severe disability, the latter defined as living with a modified Katz activities of daily living score < 8. Secondary outcomes included a composite of myocardial infarction, stroke and death from any cause through to 1 year after surgery., Results: Patients were randomly assigned to aspirin (1059 patients) or placebo (1068 patients). The rate of death or severe disability was 4.1% in the aspirin group and 3.5% in the placebo group (relative risk, 1.17; 95% confidence interval, 0.76-1.81; P = .48). There was no significant difference in the rates of myocardial infarction (P = .11), stroke (P = .086), or death (P = .24), or a composite of these cardiovascular end points (P = .68). With the exception of those with a low European System for Cardiac Operative Risk Evaluation score (P = .03), there were no interaction effects on these outcomes with tranexamic acid (all tests of interaction P > .10)., Conclusions: In patients undergoing coronary artery surgery, preoperative aspirin did not reduce death or severe disability, or thrombotic events through to 1 year after surgery., (Copyright © 2018 The American Association for Thoracic Surgery. Published by Elsevier Inc. All rights reserved.)
- Published
- 2019
- Full Text
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3. Tranexamic acid in coronary artery surgery: One-year results of the Aspirin and Tranexamic Acid for Coronary Artery Surgery (ATACAS) trial.
- Author
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Myles PS, Smith JA, Kasza J, Silbert B, Jayarajah M, Painter T, Cooper DJ, Marasco S, McNeil J, Bussières JS, McGuinness S, Byrne K, Chan MTV, Landoni G, Wallace S, and Forbes A
- Subjects
- Activities of Daily Living, Aged, Antifibrinolytic Agents adverse effects, Aspirin adverse effects, Coronary Artery Disease diagnostic imaging, Coronary Artery Disease mortality, Coronary Thrombosis etiology, Coronary Thrombosis mortality, Coronary Thrombosis prevention & control, Disability Evaluation, Double-Blind Method, Female, Fibrinolytic Agents adverse effects, Hemorrhage chemically induced, Hemorrhage mortality, Hemorrhage prevention & control, Humans, Male, Middle Aged, Myocardial Infarction etiology, Myocardial Infarction mortality, Myocardial Infarction prevention & control, Progression-Free Survival, Risk Factors, Time Factors, Tranexamic Acid adverse effects, Antifibrinolytic Agents administration & dosage, Aspirin administration & dosage, Coronary Artery Bypass adverse effects, Coronary Artery Bypass mortality, Coronary Artery Disease surgery, Fibrinolytic Agents administration & dosage, Tranexamic Acid administration & dosage
- Abstract
Background: Tranexamic acid reduces blood loss and transfusion requirements in cardiac surgery but may increase the risk of coronary graft thrombosis. We previously reported the 30-day results of a trial evaluating tranexamic acid for coronary artery surgery. Here we report the 1-year clinical outcomes., Methods: Using a factorial design, we randomly assigned patients undergoing coronary artery surgery to receive aspirin or placebo and tranexamic acid or placebo. The results of the tranexamic acid comparison are reported here. The primary 1-year outcome was death or severe disability, the latter defined as living with a modified Katz activities of daily living score of less than 8. Secondary outcomes included a composite of myocardial infarction, stroke, and death from any cause through to 1 year after surgery., Results: The rate of death or disability at 1 year was 3.8% in the tranexamic acid group and 4.4% in the placebo group (relative risk, 0.85; 95% confidence interval, 0.64-1.13; P = .27), and this did not significantly differ according to aspirin exposure at the time of surgery (interaction P = .073). The composite rate of myocardial infarction, stroke, and death up to 1 year after surgery was 14.3% in the tranexamic acid group and 16.4% in the placebo group (relative risk, 0.87; 95% CI, 0.76-1.00; P = .053)., Conclusions: In this trial of patients having coronary artery surgery, tranexamic acid did not affect death or severe disability through to 1 year after surgery. Further work should be done to explore possible beneficial effects on late cardiovascular events., (Copyright © 2018 The American Association for Thoracic Surgery. Published by Elsevier Inc. All rights reserved.)
- Published
- 2019
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4. Defining clinically important perioperative blood loss and transfusion for the Standardised Endpoints for Perioperative Medicine (StEP) collaborative: a protocol for a scoping review.
- Author
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Bartoszko J, Vorobeichik L, Jayarajah M, Karkouti K, Klein AA, Lamy A, Mazer CD, Murphy M, Richards T, Englesakis M, Myles PS, and Wijeysundera DN
- Subjects
- Humans, Research Design, Scoping Reviews As Topic, Blood Loss, Surgical, Blood Transfusion standards, Perioperative Period standards, Reference Standards
- Abstract
Introduction: 'Standardised Endpoints for Perioperative Medicine' (StEP) is an international collaboration undertaking development of consensus-based consistent definitions for endpoints in perioperative clinical trials. Inconsistency in endpoint definitions can make interpretation of trial results more difficult, especially if conflicting evidence is present. Furthermore, this inconsistency impedes evidence synthesis and meta-analyses. The goals of StEP are to harmonise definitions for clinically meaningful endpoints and specify standards for endpoint reporting in clinical trials. To help inform this endeavour, we aim to conduct a scoping review to systematically characterise the definitions of clinically important endpoints in the existing published literature on perioperative blood loss and transfusion., Methods and Analysis: The scoping review will be conducted using the widely adopted framework developed by Arksey and O'Malley, with modifications from Levac. We refined our methods with guidance from research librarians as well as researchers and clinicians with content expertise. The electronic literature search will involve several databases including Medline, PubMed-not-Medline and Embase. Our review has three objectives, namely to (1) identify definitions of significant blood loss and transfusion used in previously published large perioperative randomised trials; (2) identify previously developed consensus-based definitions for significant blood loss and transfusion in perioperative medicine and related fields; and (3) describe the association between different magnitudes of blood loss and transfusion with postoperative outcomes. The multistage review process for each question will involve two reviewers screening abstracts, reading full-text articles and performing data extraction. The abstracted data will be organised and subsequently analysed in an iterative process., Ethics and Dissemination: This scoping review of the previously published literature does not require research ethics approval. The results will be used to inform a consensus-based process to develop definitions of clinically important perioperative blood loss and transfusion. The results of the scoping review will be published in a peer-reviewed scientific journal., Competing Interests: Competing interests: AAK has received support for research and/or honoraria from Pharmacosmos, Vifor Pharma, CSL Behring, Brightwake Ltd and Fisher Paykel. TR has received support for research and/or honoraria from Pharmocosmos, Vifor Pharma, Acelity and Libresse/Bodyform. TR is a director of the Iron Clinic Ltd (London, UK), director of Veincare London Ltd (London, UK) and Vascular Surgery lead for 18 Week Support Ltd (London, UK). The remaining authors have no competing interests or conflicts to declare., (© Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.)
- Published
- 2017
- Full Text
- View/download PDF
5. Tranexamic Acid in Patients Undergoing Coronary-Artery Surgery.
- Author
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Myles PS, Smith JA, Forbes A, Silbert B, Jayarajah M, Painter T, Cooper DJ, Marasco S, McNeil J, Bussières JS, McGuinness S, Byrne K, Chan MT, Landoni G, and Wallace S
- Subjects
- Aged, Aged, 80 and over, Antifibrinolytic Agents adverse effects, Aspirin therapeutic use, Blood Transfusion statistics & numerical data, Coronary Artery Disease mortality, Coronary Artery Disease surgery, Double-Blind Method, Female, Heart Valves surgery, Hemorrhage chemically induced, Humans, Male, Middle Aged, Platelet Aggregation Inhibitors therapeutic use, Postoperative Complications chemically induced, Reoperation statistics & numerical data, Seizures chemically induced, Thrombosis chemically induced, Tranexamic Acid adverse effects, Antifibrinolytic Agents therapeutic use, Coronary Artery Bypass, Hemorrhage prevention & control, Intraoperative Complications prevention & control, Tranexamic Acid therapeutic use
- Abstract
Background: Tranexamic acid reduces the risk of bleeding among patients undergoing cardiac surgery, but it is unclear whether this leads to improved outcomes. Furthermore, there are concerns that tranexamic acid may have prothrombotic and proconvulsant effects., Methods: In a trial with a 2-by-2 factorial design, we randomly assigned patients who were scheduled to undergo coronary-artery surgery and were at risk for perioperative complications to receive aspirin or placebo and tranexamic acid or placebo. The results of the tranexamic acid comparison are reported here. The primary outcome was a composite of death and thrombotic complications (nonfatal myocardial infarction, stroke, pulmonary embolism, renal failure, or bowel infarction) within 30 days after surgery., Results: Of the 4662 patients who were enrolled and provided consent, 4631 underwent surgery and had available outcomes data; 2311 were assigned to the tranexamic acid group and 2320 to the placebo group. A primary outcome event occurred in 386 patients (16.7%) in the tranexamic acid group and in 420 patients (18.1%) in the placebo group (relative risk, 0.92; 95% confidence interval, 0.81 to 1.05; P=0.22). The total number of units of blood products that were transfused during hospitalization was 4331 in the tranexamic acid group and 7994 in the placebo group (P<0.001). Major hemorrhage or cardiac tamponade leading to reoperation occurred in 1.4% of the patients in the tranexamic acid group and in 2.8% of the patients in the placebo group (P=0.001), and seizures occurred in 0.7% and 0.1%, respectively (P=0.002 by Fisher's exact test)., Conclusions: Among patients undergoing coronary-artery surgery, tranexamic acid was associated with a lower risk of bleeding than was placebo, without a higher risk of death or thrombotic complications within 30 days after surgery. Tranexamic acid was associated with a higher risk of postoperative seizures. (Funded by the Australian National Health and Medical Research Council and others; ATACAS Australia New Zealand Clinical Trials Registry number, ACTRN12605000557639 .).
- Published
- 2017
- Full Text
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6. Stopping vs. Continuing Aspirin before Coronary Artery Surgery.
- Author
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Myles PS, Smith JA, Forbes A, Silbert B, Jayarajah M, Painter T, Cooper DJ, Marasco S, McNeil J, Bussières JS, and Wallace S
- Subjects
- Aged, Aspirin adverse effects, Blood Transfusion, Double-Blind Method, Female, Humans, Length of Stay, Male, Middle Aged, Platelet Aggregation Inhibitors adverse effects, Aspirin administration & dosage, Coronary Artery Bypass mortality, Platelet Aggregation Inhibitors administration & dosage, Postoperative Complications mortality, Postoperative Hemorrhage chemically induced, Preoperative Care, Thrombosis prevention & control
- Abstract
Background: Most patients with coronary artery disease receive aspirin for primary or secondary prevention of myocardial infarction, stroke, and death. Aspirin poses a risk of bleeding in patients undergoing surgery, but it is unclear whether aspirin should be stopped before coronary artery surgery., Methods: We used a 2-by-2 factorial trial design to randomly assign patients who were scheduled to undergo coronary artery surgery and were at risk for perioperative complications to receive aspirin or placebo and tranexamic acid or placebo. The results of the aspirin trial are reported here. Patients were randomly assigned to receive 100 mg of aspirin or matched placebo preoperatively. The primary outcome was a composite of death and thrombotic complications (nonfatal myocardial infarction, stroke, pulmonary embolism, renal failure, or bowel infarction) within 30 days after surgery., Results: Among 5784 eligible patients, 2100 were enrolled; 1047 were randomly assigned to receive aspirin and 1053 to receive placebo. A primary outcome event occurred in 202 patients in the aspirin group (19.3%) and in 215 patients in the placebo group (20.4%) (relative risk, 0.94; 95% confidence interval, 0.80 to 1.12; P=0.55). Major hemorrhage leading to reoperation occurred in 1.8% of patients in the aspirin group and in 2.1% of patients in the placebo group (P=0.75), and cardiac tamponade occurred at rates of 1.1% and 0.4%, respectively (P=0.08)., Conclusions: Among patients undergoing coronary artery surgery, the administration of preoperative aspirin resulted in neither a lower risk of death or thrombotic complications nor a higher risk of bleeding than that with placebo. (Funded by the Australian National Health and Medical Research Council and others; Australia New Zealand Clinical Trials Registry number, ACTRN12605000557639.).
- Published
- 2016
- Full Text
- View/download PDF
7. Prolonged outbreak of meticillin-resistant Staphylococcus aureus in a cardiac surgery unit linked to a single colonized healthcare worker.
- Author
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Haill C, Fletcher S, Archer R, Jones G, Jayarajah M, Frame J, Williams A, Kearns AM, and Jenks PJ
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- Adult, Aged, 80 and over, Cardiology Service, Hospital, Cross Infection microbiology, Cross Infection transmission, England epidemiology, Female, Genotype, Humans, Male, Methicillin-Resistant Staphylococcus aureus classification, Methicillin-Resistant Staphylococcus aureus genetics, Middle Aged, Molecular Epidemiology, Molecular Typing, Staphylococcal Infections microbiology, Staphylococcal Infections transmission, Cross Infection epidemiology, Disease Outbreaks, Health Personnel, Methicillin-Resistant Staphylococcus aureus isolation & purification, Staphylococcal Infections epidemiology
- Abstract
Background: In low- as well as in high-prevalence settings, healthcare workers (HCWs) may be a substantial, under-recognized, reservoir of meticillin-resistant Staphylococcus aureus (MRSA) and an important potential source of transmission to patients., Aim: To report an outbreak of MRSA in a cardiac surgery unit in England over a 10-month period., Methods: Cases were defined as patients and staff on the cardiac surgery unit from whom the outbreak strain was newly isolated between 20 May 2011 and 16 March 2012. Representative isolates from all cases were characterized by spa-typing, pulsed-field gel electrophoresis and multi-locus variable-number tandem-repeat analysis (MLVA)., Findings: Four patients appeared to acquire MRSA during their inpatient stay on the cardiac surgery unit. All four patients and one HCW were found to be carrying an identical epidemic (E)MRSA-15 strain (spa t032, pulsotype A, MLVA profile 16-6-3-1-1-17-1-4). No other members of staff were found to be colonized with MRSA. The colonized HCW was thought to be the source of the outbreak and was decolonized using a combination of nasal mupirocin, chlorhexidine body wash and oral rifampicin and doxycycline., Conclusions: This report highlights recent changes in the epidemiology of MRSA in England and suggests an important role for colonized HCWs in the transmission of MRSA to patients. Screening HCWs may provide an increasingly valuable strategy in managing linked hospital acquisitions and well-defined outbreaks where initial investigation does not reveal a source., (Copyright © 2012 The Healthcare Infection Society. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2013
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8. An audit to assess the impact of new directives about the use of aprotinin on re-exploration rates and blood product usage after adult cardiac surgery.
- Author
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Khan SA, Jayarajah M, and Ahlijah B
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- Adult, Blood Component Transfusion trends, Cardiac Surgical Procedures trends, Humans, Medical Audit trends, Postoperative Hemorrhage drug therapy, Postoperative Hemorrhage etiology, Postoperative Hemorrhage prevention & control, Practice Guidelines as Topic, Reoperation trends, Aprotinin administration & dosage, Blood Component Transfusion statistics & numerical data, Cardiac Surgical Procedures adverse effects, Medical Audit methods, Reoperation statistics & numerical data
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- 2009
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9. Severe coronary artery disease with coarctation of the aorta: role of off-pump coronary artery bypass grafting.
- Author
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Balakrishnan KR, Thanikachalam S, Murthy JS, Saldanha R, and Jayarajah M
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- Angina Pectoris etiology, Aortic Coarctation complications, Blood Vessel Prosthesis Implantation, Coronary Disease complications, Female, Humans, Hypertension complications, Male, Middle Aged, Thoracotomy methods, Treatment Outcome, Ventricular Dysfunction, Left etiology, Ventricular Dysfunction, Left surgery, Aortic Coarctation surgery, Coronary Artery Bypass, Off-Pump methods, Coronary Disease surgery
- Abstract
Severe coronary artery disease with coarctation of the aorta is an unusual and challenging clinical problem. We encountered three adults with severe coronary artery disease and tight coarctation of the aorta. Since angina was the dominant symptom in all, off-pump coronary artery bypass grafting (OPCABG) was done as a first stage. All survived the operation. After a gap of 3 weeks, coarctation repair has been done in 1 patient. We believe that OPCABG offers some unique advantages in this difficult situation.
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- 2005
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10. Bradycardia associated with insertion and inflation of tissue expanders under the scalp.
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Francis GA and Jayarajah M
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- Adult, Humans, Male, Tissue Expansion Devices, Bradycardia etiology, Scalp surgery, Tissue Expansion adverse effects
- Abstract
A case of bradycardia during the insertion and inflation of tissue expanders under the scalp on two separate occasions is described. The possible mechanisms of this complication are discussed.
- Published
- 1991
- Full Text
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