18 results on '"M. Jayarajah"'
Search Results
2. Systematic review and consensus definitions for the Standardised Endpoints in Perioperative Medicine initiative: clinical indicators
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Guy Haller, Sohail Bampoe, Tim Cook, Lee A. Fleisher, Michael P.W. Grocott, Mark Neuman, David Story, Paul S. Myles, P. Myles, M. Grocott, B. Biccard, J. Blazeby, O. Boney, M. Chan, E. Diouf, L. Fleisher, C. Kalkman, A. Kurz, R. Moonesinghe, D. Wijeysundera, T.J. Gan, P. Peyton, D. Sessler, M. Tramèr, A. Cyna, G.S. De Oliveira, C. Wu, M. Jensen, H. Kehlet, M. Botti, G. Haller, T. Cook, M. Neuman, D. Story, R. Gruen, S. Bampoe, L. Evered, D. Scott, B. Silbert, D. van Dijk, H. Grocott, R. Eckenhoff, L. Rasmussen, L. Eriksson, S. Beattie, G. Landoni, K. Leslie, S. Howell, P. Nagele, T. Richards, A. Lamy, M. Lalu, R. Pearse, M. Mythen, J. Canet, A. Moller, T. Gin, M. Schultz, P. Pelosi, M. Gabreu, E. Futier, B. Creagh-Brown, T. Abbott, A. Klein, T. Corcoran, D. Jamie Cooper, S. Dieleman, D. McIlroy, R. Bellomo, A. Shaw, J. Prowle, K. Karkouti, J. Billings, D. Mazer, M. Jayarajah, M. Murphy, J. Bartoszko, R. Sneyd, S. Morris, R. George, M. Shulman, M. Lane-Fall, U. Nilsson, N. Stevenson, J.D.J. Cooper, W. van Klei, L. Cabrini, T. Miller, N. Pace, S. Jackson, D. Buggy, T. Short, B. Riedel, V. Gottumukkala, B. Alkhaffaf, M. Johnson, Intensive Care Medicine, ACS - Diabetes & metabolism, ACS - Pulmonary hypertension & thrombosis, ACS - Microcirculation, Haller, G, Bampoe, S, Cook, T, Fleisher, La, Grocott, Mpw, Neuman, M, Story, D, Myles, P, on behalf of the StEP-COMPAC, Group, Landoni, G, and Tramer, Martin
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Outcome Assessment ,Cochrane Library ,law.invention ,quality improvement ,0302 clinical medicine ,030202 anesthesiology ,law ,Outcome Assessment, Health Care ,Health care ,patient safety ,clinical indicators ,clinical trials ,outcome measures ,perioperative medicine ,standardised endpoint ,Clinical Trials as Topic ,Humans ,Patient Safety ,Perioperative Care ,Quality of Health Care ,Reference Standards ,Reproducibility of Results ,Consensus ,Perioperative medicine ,ddc:617 ,Manchester Cancer Research Centre ,Patient Safety/standards ,Outcome Assessment, Health Care/standards ,clinical trial ,Intensive care unit ,Quality of Health Care / standards ,medicine.medical_specialty ,Health Care/standards ,Perioperative Care/standards ,Quality of Health Care/standards ,03 medical and health sciences ,Patient safety ,Anesthesiology ,medicine ,Journal Article ,clinical indicator ,outcome measure ,business.industry ,ResearchInstitutes_Networks_Beacons/mcrc ,Perioperative Care / standards ,Perioperative ,Patient Safety / standards ,Clinical trial ,Health Care ,Anesthesiology and Pain Medicine ,Emergency medicine ,Quality and Patient Safety ,Outcome Assessment, Health Care / standards ,Systematic Review ,business - Abstract
Background Clinical indicators are powerful tools to quantify the safety and quality of patient care. Their validity is often unclear and definitions extremely heterogeneous. As part of the International Standardised Endpoints in Perioperative Medicine (StEP) initiative, this study aimed to derive a set of standardised and valid clinical outcome indicators for use in perioperative clinical trials. Methods We identified clinical indicators via a systematic review of the anaesthesia and perioperative medicine literature (PubMed/OVID, EMBASE, and Cochrane Library). We performed a three-stage Delphi consensus-gaining process that involved 54 clinician–researchers worldwide. Indicators were first shortlisted and the most suitable definitions for evaluation of quality and safety interventions determined. Indicators were then assessed for validity, reliability, feasibility, and clarity. Results We identified 167 clinical outcome indicators. Participation in the three Delphi rounds was 100% (n=13), 68% (n=54), and 85% (n= 6), respectively. A final list of eight outcome indicators was generated: surgical site infection at 30 days, stroke within 30 days of surgery, death within 30 days of coronary artery bypass grafting, death within 30 days of surgery, admission to the intensive care unit within 14 days of surgery, readmission to hospital within 30 days of surgery, and length of hospital stay (with or without in-hospital mortality). They were rated by the majority of experts as valid, reliable, easy to use, and clearly defined. Conclusions These clinical indicators can be confidently used as endpoints in clinical trials measuring quality, safety, and improvement in perioperative care. Registration PROSPERO 2016 CRD42016042102 (http://www.crd.york.ac.uk/PROSPERO/display_record.php? ID=CRD42016042102).
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- 2019
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3. Systematic review and consensus definitions for standardised endpoints in perioperative medicine : postoperative cancer outcomes
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Monty G. Mythen, Ronald B. George, Hilary P. Grocott, Christopher L. Wu, Andy Klein, Keyvan Karkouti, M. Gabreu, Justyna Bartoszko, Tony Gin, David Mazer, Bilal Alkhaffaf, A. Kurz, Oliver Boney, Cornelis J. Kalkman, David R. McIlroy, P. Peyton, S. Dieleman, N. Stevenson, Mark D. Neuman, Stephen Morris, Rupert M Pearse, Ramani Moonesinghe, Matthew T. V. Chan, Lisbeth Evered, Donal J. Buggy, Guy Haller, R. Eckenhoff, MJ Schultz, Timothy G. Short, E. Diouf, Lars S. Rasmussen, D. Jamie Cooper, Tom E.F. Abbott, Emmanuel Futier, Nathan L. Pace, Andre Lamy, Scott Beattie, D. I. Sessler, Lars Eriksson, P. Myles, Jaume Canet, Paolo Pelosi, M. Jayarajah, David Scott, A. Cyna, Simon J. Howell, S. Jackson, Mark Johnson, Bruce M Biccard, Ben Creagh-Brown, Ann Merete Møller, Rinaldo Bellomo, Ulrica Nilsson, Toby Richards, Bernhard Riedel, Peter Nagele, W. A. van Klei, Timothy E. Miller, Mark A Shulman, Kate Leslie, G. S. De Oliveira, Mari Botti, Tim Cook, J. Billings, Tong J. Gan, Tomas Corcoran, Brendan S. Silbert, Michael P.W. Grocott, Duminda N. Wijeysundera, David A Story, Sohail Bampoe, Meghan B. Lane-Fall, M.-B. Jensen, R. Sneyd, Manoj M. Lalu, Russell L. Gruen, James Freeman, John R. Prowle, D. van Dijk, Martin R. Tramèr, Luca Cabrini, Michael P. Murphy, Giovanni Landoni, Henrik Kehlet, Lee A. Fleisher, Andrew D. Shaw, Vijaya Gottumukkala, Buggy, Dj, Freeman, J, Johnson, Mz, Leslie, K, Riedel, B, Sessler, Di, Kurz, A, Gottumukkala, V, Short, T, Pace, N, Myles, P, StEP-COMPAC, Group, Landoni, G, Intensive Care Medicine, ACS - Diabetes & metabolism, ACS - Pulmonary hypertension & thrombosis, ACS - Microcirculation, Haller, Guy Serge Antoine, and Tramer, Martin
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postoperative outcomes ,Delphi method ,surgery ,0302 clinical medicine ,Neoplasms / surgery ,030202 anesthesiology ,Neoplasms ,cancer, recurrence ,cancer, surgery ,clinical trials, endpoints ,surgery, postoperative outcomes ,Consensus ,Disease-Free Survival ,Endpoint Determination ,Humans ,Perioperative Care ,Postoperative Care ,Survival Analysis ,Treatment Outcome ,Anesthesiology and Pain Medicine ,Medicine ,Postoperative Care / standards ,Perioperative medicine ,Manchester Cancer Research Centre ,ddc:617 ,surgery, postoperative outcome ,Neoplasms/surgery ,030220 oncology & carcinogenesis ,clinical trials, endpoint ,Endpoint Determination / standards ,medicine.medical_specialty ,recurrence ,endpoints ,Perioperative Care/standards ,03 medical and health sciences ,Anesthesiology ,Endpoint Determination/standards ,cancer ,Intensive care medicine ,Survival analysis ,clinical trials ,Clinical trials, endpoints ,business.industry ,ResearchInstitutes_Networks_Beacons/mcrc ,Surgery, postoperative outcomes ,Cancer ,Perioperative Care / standards ,medicine.disease ,Clinical trial ,Clinical research ,Systematic Review ,Postoperative Care/standards ,business ,Cancer surgery - Abstract
Background: The Standardising Endpoints for Perioperative Medicine group was established to derive an appropriate set of endpoints for use in clinical trials related to anaesthesia and perioperative medicine. Anaesthetic or analgesic technique during cancer surgery with curative intent may influence the risk of recurrence or metastasis. However, given the current equipoise in the existing literature, prospective, randomised, controlled trials are necessary to test this hypothesis. As such, a cancer subgroup was formed to derive endpoints related to research in onco-anaesthesia based on a current evidence base, international consensus and expert guidance.Methods: We undertook a systematic review to identify measures of oncological outcome used in the oncological, surgical, and wider literature. A multiround Delphi consensus process that included up to 89 clinician–researchers was then used to refine a recommended list of endpoints.Results: We identified 90 studies in a literature search, which were the basis for a preliminary list of nine outcome measures and their definitions. A further two were added during the Delphi process. Response rates for Delphi rounds one, two, and three were 88% (n=9), 82% (n=73), and 100% (n=10), respectively. A final list of 10 defined endpoints was refined and developed, of which six secured approval by ≥70% of the group: cancer health related quality of life, days alive and out of hospital at 90 days, time to tumour progression, disease-free survival, cancer-specific survival, and overall survival (and 5-yr overall survival).Conclusion: Standardised endpoints in clinical outcomes studies will support benchmarking and pooling (meta-analysis) of trials. It is therefore recommended that one or more of these consensus-derived endpoints should be considered for inclusion in clinical trials evaluating a causal effect of anaesthesia–analgesia technique on oncological outcomes.
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- 2018
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4. Characterization of Iron deficiency in patients with chronic heart failure: A prospective, multicentric, observational study from India
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Sitanshu Sekhar Mohanty, Uttam Kumar Halder, Sohan Kumar Sharma, Chandra Shekhar, Dharmendra Jain, Gursaran Kaur Sidhu, Rajeev Rathi, M Jayarajah, Bhupen N Desai, Nitin Burkule, and Prasant Kumar Sahoo
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medicine.medical_specialty ,medicine.diagnostic_test ,biology ,business.industry ,Transferrin saturation ,Anemia ,Iron deficiency ,medicine.disease ,Ferritin ,Heart failure ,Internal medicine ,Serum iron ,biology.protein ,Medicine ,Outpatient clinic ,Hemoglobin ,business - Abstract
Objective: The objective of the study is to assess the characteristics of iron deficiency (ID) in Indian patients with chronic heart failure (CHF). Materials and Methods: This was a prospective observational study involving in patients visiting the outpatient department and admitted to hospitals with a clinical diagnosis of CHF falling within the New York Heart Association (NYHA) classification (I–IV). ID was diagnosed based on hemoglobin (Hb), serum ferritin levels, serum iron, total iron-binding capacity, and transferrin saturation (TSAT) percentage. Absolute ID was diagnosed as ferritin level 20%). Anemia was defined as Hb
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- 2020
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5. Tranexamic acid in coronary artery surgery: One-year results of the Aspirin and Tranexamic Acid for Coronary Artery Surgery (ATACAS) trial
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Paul S. Myles, Julian A. Smith, Jessica Kasza, Brendan Silbert, Mohandas Jayarajah, Thomas Painter, D. James Cooper, Silvana Marasco, John McNeil, Jean S. Bussières, Shay McGuinness, Kelly Byrne, Matthew T.V. Chan, Giovanni Landoni, Sophie Wallace, Andrew Forbes, Paul Myles, Julian Smith, Donald Esmore, Henry Krum, A. Tonkin, B. Buxton, S. Heritier, A. Merry, D. Liew, J. McNeil, A. Forbes, D.J. Cooper, S. Wallace, A. Meehan, P. Myles, W. Galagher, C. Farrington, A. Ditoro, L. Wutzlhofer, D. Story, P. Peyton, S. Baulch, S. Sidiropoulos, D. Potgieter, R.A. Baker, B. Pesudovs, E. O'Loughlin J Wells, P. Coutts, S. Bolsin, C. Osborne, K. Ives, J. Smith, A. Hulley, G. Christie-Taylor, T. Painter, S. Lang, H. Mackay, C. Cokis, S. March, P.G. Bannon, C. Wong, L. Turner, D. Scott, B. Silbert, S. Said, P. Corcoran, L. de Prinse, J.S. Bussières, N. Gagné, A. Lamy, L. Semelhago, M.T.V. Chan, M. Underwood, G.S.Y. Choi, B. Fung, G. Landoni, R. Lembo, F. Monaco, F. Simeone, D. Marianello, G. Alvaro, G. De Vuono, D. van Dijk, J. Dieleman, S. Numan, S. McGuinness, R. Parke, P. Raudkivi, E. Gilder, K. Byrne, J. Dunning, J. Termaat, G. Mans, M. Jayarajah, J. Alderton, D. Waugh, M.J. Platt, A. Pai, A. Sevillano, A. Lal, C. Sinclair, G. Kunst, A. Knighton, G.M. Cubas, P. Saravanan, R. Millner, V. Vasudevan, M. Patteril, E. Lopez, R. Basu, J. Lu, Myles, P, Smith, Ja, Kasza, J, Silbert, B, Jayarajah, M, Painter, T, Cooper, Dj, Marasco, S, Mcneil, J, Bussières, J, Mcguinness, S, Byrne, K, Chan, Mtv, Landoni, G, Wallace, S, Forbes, A, and ATACAS investigators and the ANZCA Clinical Trials, Network
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Male ,Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,Time Factors ,Antifibrinolytic ,medicine.drug_class ,Myocardial Infarction ,disability-free survival ,Hemorrhage ,Coronary Artery Disease ,anesthesia ,030204 cardiovascular system & hematology ,antiplatelet ,Coronary artery disease ,Disability Evaluation ,03 medical and health sciences ,0302 clinical medicine ,Double-Blind Method ,Fibrinolytic Agents ,Coronary thrombosis ,Risk Factors ,Activities of Daily Living ,medicine ,Humans ,Myocardial infarction ,Coronary Artery Bypass ,antifibrinolytic ,Stroke ,Aged ,Aspirin ,business.industry ,Coronary Thrombosis ,Middle Aged ,medicine.disease ,Antifibrinolytic Agents ,Progression-Free Survival ,Cardiac surgery ,Tranexamic Acid ,030228 respiratory system ,major adverse cardiac event ,Anesthesia ,outcome ,Female ,Surgery ,Cardiology and Cardiovascular Medicine ,business ,Tranexamic acid ,medicine.drug - 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.
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- 2019
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6. A systematic review and consensus definitions for standardised end-points in perioperative medicine : pulmonary complications
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Bilal Alkhaffaf, Christopher L. Wu, M. Gabreu, Alexander J. Fowler, Tony Gin, S. Dieleman, P. Peyton, D. Jamie Cooper, Tong J. Gan, Tomas Corcoran, Simon K. Jackson, Oliver Boney, D. van Dijk, Nathan L. Pace, G. S. De Oliveira, Martin R. Tramèr, Luca Cabrini, Michael P. Murphy, Timothy G. Short, Giovanni Landoni, Ronald B. George, Henrik Kehlet, David Mazer, Ulrica Nilsson, Cornelis J. Kalkman, Rupert M Pearse, R. Eckenhoff, Andrea Kurz, Monty G. Mythen, N. Stevenson, David R. McIlroy, Lis Evered, M.-B. Jensen, Manoj M. Lalu, Russell L. Gruen, R. Sneyd, Stephen Morris, Meghan B. Lane-Fall, Ramani Moonesinghe, D. I. Sessler, Guy Haller, Michael P.W. Grocott, Paul S. Myles, Mark D. Johnson, Ben Creagh-Brown, E. Diouf, Marcus J. Schultz, Ann Merete Møller, Lars Eriksson, Tom E.F. Abbott, Peter Nagele, Andrew A. Klein, Paolo Pelosi, A. Cyna, Lee A. Fleisher, Mark A Shulman, David A Story, Andrew D. Shaw, Sohail Bampoe, W. A. van Klei, Timothy E. Miller, Justyna Bartoszko, M. Gama de Abreu, Scott Beattie, Vijaya Gottumukkala, Brendan S. Silbert, Toby Richards, Michael P. W. Grocott, Bernhard Riedel, Mari Botti, Tim Cook, J. Billings, Lars S. Rasmussen, Andre Lamy, Keyvan Karkouti, Mark D. Neuman, John R. Prowle, Jaume Canet, Matthew T. V. Chan, David Scott, Bruce M Biccard, Donal J. Buggy, Emmanuel Futier, Simon J. Howell, Duminda N. Wijeysundera, Kate Leslie, Hilary P. Grocott, M. Jayarajah, Rinaldo Bellomo, Abbott, Tef, Fowler, Aj, Pelosi, P, Gama de Abreu, M, Møller, Am, Canet, J, Creagh-Brown, B, Mythen, M, Gin, T, Lalu, Mm, Futier, E, Grocott, Mp, Schultz, Mj, Pearse, Rm, and the StEP-COMPAC, Group, Landoni, Giovanni, and Haller, Guy Serge Antoine
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Lung Diseases ,Research design ,medicine.medical_specialty ,Consensus ,MEDLINE ,outcome assessment (healthcare)/standard ,Perioperative Care ,law.invention ,Outcome Assessment (Health Care) ,03 medical and health sciences ,Postoperative Complications ,0302 clinical medicine ,Randomized controlled trial ,perioperative care/method ,030202 anesthesiology ,law ,Anesthesiology ,Outcome Assessment, Health Care ,Positive airway pressure ,Health care ,medicine ,outcome assessment (healthcare)/standards ,perioperative care/methods ,Humans ,Randomized Controlled Trials as Topic ,Reference Standards ,Research Design ,Anesthesiology and Pain Medicine ,030212 general & internal medicine ,Intensive care medicine ,Perioperative medicine ,ddc:617 ,Manchester Cancer Research Centre ,business.industry ,ResearchInstitutes_Networks_Beacons/mcrc ,Perioperative ,business - Abstract
Background: There is a need for robust, clearly defined, patient-relevant outcome measures for use in randomised trials in perioperative medicine. Our objective was to establish standard outcome measures for postoperative pulmonary complications research.Methods: A systematic literature search was conducted using MEDLINE, Web of Science, SciELO, and the Korean Journal Database. Definitions were extracted from included manuscripts. We then conducted a three-stage Delphi consensus process to select the optimal outcome measures in terms of methodological quality and overall suitability for perioperative trials.Results: From 2358 records, the full texts of 81 manuscripts were retrieved, of which 45 met the inclusion criteria. We identified three main categories of outcome measure specific to perioperative pulmonary outcomes: (i) composite outcome measures of multiple pulmonary outcomes (27 definitions); (ii) pneumonia (12 definitions); and (iii) respiratory failure (six definitions). These were rated by the group according to suitability for routine use. The majority of definitions were given a low score, and many were imprecise, difficult to apply consistently, or both, in large patient populations. A small number of highly rated definitions were identified as appropriate for widespread use. The group then recommended four outcome measures for future use, including one new definition.Conclusions: A large number of postoperative pulmonary outcome measures have been used, but most are poorly defined. Our four recommended outcome measures include a new definition of postoperative pulmonary complications, incorporating an assessment of severity. These definitions will meet the needs of most clinical effectiveness trials of treatments to improve postoperative pulmonary outcomes.
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- 2018
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7. Prolonged outbreak of meticillin-resistant Staphylococcus aureus in a cardiac surgery unit linked to a single colonized healthcare worker
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C. Haill, Angela M. Kearns, M. Jayarajah, R. Archer, J. Frame, S. Fletcher, G. Jones, Alison Williams, and P.J. Jenks
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Microbiology (medical) ,Adult ,Male ,Methicillin-Resistant Staphylococcus aureus ,medicine.medical_specialty ,Genotype ,Health Personnel ,Mupirocin ,Multiple Loci VNTR Analysis ,Disease Outbreaks ,chemistry.chemical_compound ,Internal medicine ,Epidemiology ,medicine ,Humans ,Typing ,Intensive care medicine ,Aged, 80 and over ,Cross Infection ,Molecular Epidemiology ,Molecular epidemiology ,Transmission (medicine) ,business.industry ,Outbreak ,General Medicine ,Middle Aged ,Staphylococcal Infections ,bacterial infections and mycoses ,Molecular Typing ,Infectious Diseases ,chemistry ,England ,Female ,Cardiology Service, Hospital ,business ,Rifampicin ,medicine.drug - Abstract
Summary 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.
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- 2012
8. Impact of ketogenesis and strong ion difference on acid-base in our CICU
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T Clark, P Murphy, M Jayarajah, and B McGrath
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Fluid administration ,medicine.medical_specialty ,Surgical stress ,business.industry ,Cardiopulmonary bypass circuit ,Metabolic acidosis ,Critical Care and Intensive Care Medicine ,medicine.disease ,Bioinformatics ,Strong ion difference ,Cardiac surgery ,Internal medicine ,Poster Presentation ,Ketogenesis ,Cardiology ,Medicine ,medicine.symptom ,business ,Acidosis - Abstract
Persistence of a mild metabolic acidosis or base deficit was occasionally observed in our otherwise well patients post cardiac surgery, sometimes delaying discharge. We hypothesised that this metabolic abnormality may be due to either ketogenesis caused by a combination of starvation and the surgical stress response, or strong ion imbalances following fluid administration. The administration of large volumes of chloride-rich fluids (as may occur during cardiac surgery to prime the cardiopulmonary bypass circuit or resuscitate the patient) is known to induce hyperchloraemic metabolic acidosis [1]. Using simplifications of the original Fencl-Stewart's equations, it is possible to partition the base deficit into its constituent parts, subsequently determining the relative contribution of chloride, albumin and unmeasured anions to acidosis [2,3]. Ketone production may contribute significantly to the unmeasured anion component.
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- 2012
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9. Patent Ductus Arteriosus
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M Jayarajah and M Satpathy
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business.industry ,Medicine ,business - Published
- 2008
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10. Chapter-14 Patent Ductus Arteriosus
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M Jayarajah
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medicine.medical_specialty ,medicine.anatomical_structure ,business.industry ,Ductus arteriosus ,Internal medicine ,medicine ,Cardiology ,business - Published
- 2007
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11. Bradycardia associated with insertion and inflation of tissue expanders under the scalp
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M. Jayarajah and G. A. Francis
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Adult ,Male ,Bradycardia ,Inflation ,medicine.medical_specialty ,media_common.quotation_subject ,Tissue Expansion ,medicine ,Humans ,media_common ,Tissue expander ,Scalp ,integumentary system ,business.industry ,Tissue Expansion Devices ,General Medicine ,Surgery ,body regions ,Anesthesiology and Pain Medicine ,medicine.anatomical_structure ,Anesthesia ,medicine.symptom ,Complication ,business - 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.
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- 1991
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12. Aspirin in coronary artery surgery: 1-year results of the Aspirin and Tranexamic Acid for Coronary Artery Surgery trial.
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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
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- 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
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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.)
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- 2019
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13. Defining clinically important perioperative blood loss and transfusion for the Standardised Endpoints for Perioperative Medicine (StEP) collaborative: a protocol for a scoping review.
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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
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- Humans, Research Design, Review Literature 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
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14. 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
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15. 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
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16. 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
- Subjects
- 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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17. 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
- Subjects
- 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
- Published
- 2009
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18. 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
- Subjects
- 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.
- Published
- 2005
- Full Text
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