Merril L Knudtson

Summary

Country: Canada

Publications

  1. pmc Women with coronary artery disease report worse health-related quality of life outcomes compared to men
    Colleen M Norris
    Faculty of Nursing, 4 112G Clinical Sciences Building, University of Alberta, Edmonton, Alberta, T6G 2G3 Canada
    Health Qual Life Outcomes 2:21. 2004
  2. pmc An administrative data merging solution for dealing with missing data in a clinical registry: adaptation from ICD-9 to ICD-10
    Danielle A Southern
    Department of Community Health Sciences, University of Calgary, Calgary, AB, Canada
    BMC Med Res Methodol 8:1. 2008
  3. pmc Treating the right patient at the right time: access to specialist consultation and non-invasive testing
    Merril L Knudtson
    Libin Cardiovascular Institute of Alberta
    Can J Cardiol 22:819-24. 2006
  4. ncbi request reprint Chelation therapy for ischemic heart disease: a randomized controlled trial
    Merril L Knudtson
    Foothills Medical Center, 1403 29th St NW, Calgary, Alberta, Canada T2N 2T9
    JAMA 287:481-6. 2002
  5. doi request reprint Contrast-induced acute kidney injury and risk of adverse clinical outcomes after coronary angiography: a systematic review and meta-analysis
    Matthew T James
    Department of Medicine, University of Calgary, Calgary, Alberta, Canada
    Circ Cardiovasc Interv 6:37-43. 2013
  6. pmc Renal outcomes associated with invasive versus conservative management of acute coronary syndrome: propensity matched cohort study
    Matthew T James
    Department of Medicine, University of Calgary, Foothills Medical Centre, 1403 29th St NW, Calgary, Alberta, T2N 2T9, Canada
    BMJ 347:f4151. 2013
  7. doi request reprint Trends in wait times for cardiac revascularization
    Danielle A Southern
    Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
    Can J Cardiol 27:262.e21-7. 2011
  8. doi request reprint Temporal associations of early patient transfers and mortality with the implementation of a regional myocardial infarction care model
    Alka B Patel
    Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
    Can J Cardiol 27:731-8. 2011
  9. doi request reprint Outcomes associated with bilateral internal thoracic artery grafting: the importance of age
    Teresa M Kieser
    Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
    Ann Thorac Surg 92:1269-75; discussion 1275-6. 2011
  10. pmc Long-term outcomes of patients receiving drug-eluting stents
    Andrew C Philpott
    Department of Medicine, University of Calgary, Calgary, Alberta
    CMAJ 180:167-74. 2009

Collaborators

Detail Information

Publications32

  1. pmc Women with coronary artery disease report worse health-related quality of life outcomes compared to men
    Colleen M Norris
    Faculty of Nursing, 4 112G Clinical Sciences Building, University of Alberta, Edmonton, Alberta, T6G 2G3 Canada
    Health Qual Life Outcomes 2:21. 2004
    ..The purpose of this study was to compare HRQOL outcomes of men and women in Alberta, at one-year following initial catheterization, after adjustment for known demographic, co-morbid, and disease severity predictors of outcome...
  2. pmc An administrative data merging solution for dealing with missing data in a clinical registry: adaptation from ICD-9 to ICD-10
    Danielle A Southern
    Department of Community Health Sciences, University of Calgary, Calgary, AB, Canada
    BMC Med Res Methodol 8:1. 2008
    ..Here, we describe the process of translating our data merging solution to ICD-10, and then validating its performance...
  3. pmc Treating the right patient at the right time: access to specialist consultation and non-invasive testing
    Merril L Knudtson
    Libin Cardiovascular Institute of Alberta
    Can J Cardiol 22:819-24. 2006
    ....
  4. ncbi request reprint Chelation therapy for ischemic heart disease: a randomized controlled trial
    Merril L Knudtson
    Foothills Medical Center, 1403 29th St NW, Calgary, Alberta, Canada T2N 2T9
    JAMA 287:481-6. 2002
    ..Chelation therapy using EDTA is an unproven but widely used alternative therapy for ischemic heart disease...
  5. doi request reprint Contrast-induced acute kidney injury and risk of adverse clinical outcomes after coronary angiography: a systematic review and meta-analysis
    Matthew T James
    Department of Medicine, University of Calgary, Calgary, Alberta, Canada
    Circ Cardiovasc Interv 6:37-43. 2013
    ..We performed a systematic review and meta-analysis to characterize the associations between CI-AKI and subsequent clinical outcomes...
  6. pmc Renal outcomes associated with invasive versus conservative management of acute coronary syndrome: propensity matched cohort study
    Matthew T James
    Department of Medicine, University of Calgary, Foothills Medical Centre, 1403 29th St NW, Calgary, Alberta, T2N 2T9, Canada
    BMJ 347:f4151. 2013
    ....
  7. doi request reprint Trends in wait times for cardiac revascularization
    Danielle A Southern
    Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
    Can J Cardiol 27:262.e21-7. 2011
    ..The objective of this study was to investigate wait times for both percutaneous coronary intervention (PCI) and coronary artery bypass graft (CABG) surgery...
  8. doi request reprint Temporal associations of early patient transfers and mortality with the implementation of a regional myocardial infarction care model
    Alka B Patel
    Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
    Can J Cardiol 27:731-8. 2011
    ..Calgary is a Canadian city that implemented this type of model in 2004...
  9. doi request reprint Outcomes associated with bilateral internal thoracic artery grafting: the importance of age
    Teresa M Kieser
    Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada
    Ann Thorac Surg 92:1269-75; discussion 1275-6. 2011
    ..We sought to determine if such an age cutoff point exists...
  10. pmc Long-term outcomes of patients receiving drug-eluting stents
    Andrew C Philpott
    Department of Medicine, University of Calgary, Calgary, Alberta
    CMAJ 180:167-74. 2009
    ..We sought to establish the long-term safety of drug-eluting stents compared with bare-metal stents in a usual care setting...
  11. ncbi request reprint Kaplan-Meier methods yielded misleading results in competing risk scenarios
    Danielle A Southern
    Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
    J Clin Epidemiol 59:1110-4. 2006
    ..We compared K-M methods applying various censoring approaches with the lesser-known "cumulative incidence competing risks" (CICR) method in an analysis of competing events...
  12. ncbi request reprint Coronary dominance and prognosis of patients with acute coronary syndrome
    Alexander Goldberg
    Department of Medicine, University of Calgary, Calgary, Alberta, Canada
    Am Heart J 154:1116-22. 2007
    ..It is unknown if coronary dominance has an impact on prognosis of these patients. We hypothesized that the prognosis of patients with ACS with left dominance (LD) would be worse than that of patients with right or mixed dominance...
  13. ncbi request reprint Development and validation of a surname list to define Chinese ethnicity
    Hude Quan
    Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
    Med Care 44:328-33. 2006
    ..Surnames have the potential to accurately identify ancestral origins as they are passed on from generation to generation. In this study, we developed and validated a Chinese surname list to define Chinese ethnicity...
  14. pmc Risk-taking attitudes and their association with process and outcomes of cardiac care: a cohort study
    Kathryn M King
    Centre for Health and Policy Studies, Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
    BMC Cardiovasc Disord 9:36. 2009
    ..We examined the association between risk-taking attitudes and cardiac patients' clinical and demographic characteristics, the likelihood of undergoing invasive cardiac procedures and survival...
  15. doi request reprint Acute kidney injury following coronary angiography is associated with a long-term decline in kidney function
    Matthew T James
    Department of Medicine, University of Calgary, Calgary, Alberta, Canada
    Kidney Int 78:803-9. 2010
    ..8 ml/min following moderate to severe acute kidney injury. Thus, acute kidney injury following coronary angiography is associated with a sustained loss and a larger rate of future decline in kidney function...
  16. pmc Alcohol and Drug Use Disorders among Patients with Myocardial Infarction: Associations with Disparities in Care and Mortality
    Cynthia A Beck
    Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada Department of Psychiatry, University of Calgary, Calgary, Alberta, Canada Faculty of Medicine, University of Calgary, Calgary, Alberta, Canada
    PLoS ONE 8:e66551. 2013
    ..Because alcohol and drug use disorders (SUDs) can influence quality of care, we compared patients with and without SUDs on frequency of catheterization, revascularization, and in-hospital mortality after acute myocardial infarction (AMI)...
  17. ncbi request reprint Refined characterization of the association between kidney function and mortality in patients undergoing cardiac catheterization
    Brenda R Hemmelgarn
    Department of Medicine, University of Calgary, Calgary, Alberta, Canada
    Eur Heart J 27:1191-7. 2006
    ....
  18. doi request reprint Incidence of heart failure and mortality after acute coronary syndromes
    Padma Kaul
    Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
    Am Heart J 165:379-85.e2. 2013
    ..We examined the 1-year incidence of HF and its association with mortality among patients surviving their first acute coronary syndrome (ACS) hospitalization...
  19. ncbi request reprint External validation of a percutaneous coronary intervention mortality prediction model in patients with acute coronary syndromes
    Jaroslav Hubacek
    Department of Medicine, University of Calgary, Calgary, Alberta, Canada
    Am Heart J 151:308-15. 2006
    ..Our purpose was to externally validate the performance of the MM in 2 separate cohorts of patients with acute coronary syndrome (ACS) undergoing PCI in Canada...
  20. ncbi request reprint Effect of chelation therapy on endothelial function in patients with coronary artery disease: PATCH substudy
    Todd J Anderson
    Faculty of Medicine, University of Calgary and Calgary Health Region, 1403 29th Street NW, Calgary, Alberta T2N 2T9, Canada
    J Am Coll Cardiol 41:420-5. 2003
    ..The purpose of this study was to evaluate the effect of chelation therapy with ethylenediamine tetraacetic acid (EDTA) on endothelium-dependent vasomotor responses in patients with documented coronary artery disease (CAD)...
  21. ncbi request reprint Ordinal regression model and the linear regression model were superior to the logistic regression models
    Colleen M Norris
    Faculty of Nursing, University of Alberta, Edmonton, Alberta, Canada
    J Clin Epidemiol 59:448-56. 2006
    ..HRQOL data were collected at 1 year following catheterization using the Seattle Angina Questionnaire (SAQ), a disease-specific quality of life and symptom rating scale...
  22. ncbi request reprint Survival after coronary revascularization in the elderly
    Michelle M Graham
    Department of Medicine, University of Alberta, Canada
    Circulation 105:2378-84. 2002
    ..We studied survival by prescribed treatment (CABG, PCI, or medical therapy) for patients in 3 age categories: <70 years, 70 to 79 years, and > or =80 years of age...
  23. pmc Rising to the challenge: transforming the treatment of ST-segment elevation myocardial infarction
    William A Ghali
    Department of Medicine, University of Calgary, Calgary, Alta
    CMAJ 169:35-7. 2003
  24. ncbi request reprint Sex differences in the prognostic importance of diabetes in patients with ischemic heart disease undergoing coronary angiography
    Michelle M Graham
    Division of Cardiology, University of Alberta Hospital, Edmonton, Alberta, Canada
    Diabetes Care 26:3142-7. 2003
    ..We evaluated the prognosis associated with diabetes, in analyses stratified by sex, to determine whether similar differences are seen in a large unselected cohort of patients...
  25. ncbi request reprint Geographical location of residence and uniformity of access to cardiac revascularization services after catheterization
    Judy E Seidel
    Faculty of Medicine Community Health Sciences, University of Calgary, Calgary, Canada
    Can J Cardiol 20:517-23. 2004
    ..The centralization of health care services has numerous potential benefits but April compromise access for individuals living in remote areas...
  26. ncbi request reprint Health-related quality of life outcomes of patients with coronary artery disease treated with cardiac surgery, percutaneous coronary intervention or medical management
    Colleen M Norris
    Faculty of Nursing, University of Alberta, Edmonton, Canada
    Can J Cardiol 20:1259-66. 2004
    ....
  27. ncbi request reprint Referral rate and outcomes of cardiac rehabilitation after cardiac catheterization in a large Canadian city
    Colleen M Norris
    4 112G Clinical Sciences Building, University of Alberta, Edmonton, Alberta, T6G 2G3, Canada
    J Cardiopulm Rehabil 24:392-400. 2004
    ..The purpose of this study was to identify the proportion of patients referred to CR in a large Canadian city, and to determine their statistically adjusted survival rates relative to patients not referred to CR...
  28. ncbi request reprint Cross-provincial use of cardiac services: the importance of data-sharing for clinical registries and outcomes research
    Karin H Humphries
    St Paul s Hospital, Vancouver, Canada
    Can J Cardiol 21:267-72. 2005
    ....
  29. ncbi request reprint Moving beyond the cost per quality-adjusted life year: modelling the budgetary impact and clinical outcomes associated with the use of sirolimus-eluting stents
    Fiona M Shrive
    Department of Community Health Sciences, University of Calgary, Canada
    Can J Cardiol 21:783-7. 2005
    ..Several issues that decision-makers and providers may wish to consider when making such funding decisions are discussed...
  30. ncbi request reprint Individual-level and neighborhood-level income measures: agreement and association with outcomes in a cardiac disease cohort
    Danielle A Southern
    Department of Community Health Sciences, Alberta, Canada
    Med Care 43:1116-22. 2005
    ..Census-based measures of income often are used as proxies for individual-level income. Yet, the validity of such area-based measures relative to 'true' individual-level income has not been fully characterized...
  31. pmc Treating the right patient at the right time: Access to cardiac catheterization, percutaneous coronary intervention and cardiac surgery
    Michelle M Graham
    Division of Cardiology, Department of Medicine, University of Alberta, University of Alberta Hospital, Edmonton, Alberta, Canada
    Can J Cardiol 22:679-83. 2006
    ..There is an ongoing need to continually reassess current risk stratification methods to limit adverse events in patients on waiting lists and assist clinicians in triaging patients for invasive therapies...
  32. ncbi request reprint Quality of life after coronary revascularization in the elderly
    Michelle M Graham
    Division of Cardiology, Department of Medicine, University of Alberta Hospital, 8, 440 112 Street, Edmonton, Alberta, Canada T6G 2R7
    Eur Heart J 27:1690-8. 2006
    ..To describe health status outcomes at 4 years for a cohort of elderly patients with cardiac disease...