Research Topics
| Karin H HumphriesSummaryAffiliation: University of British Columbia Country: Canada Publications
| Collaborators
|
Detail Information
Publications
Limitations to antiarrhythmic drug use in patients with atrial fibrillationKarin H Humphries
Department of Medicine, University of British Columbia and Centre for Health Evaluation and Outcomes Sciences, Vancouver, BC
CMAJ 171:741-5. 2004....
Sex differences in mortality after transcatheter aortic valve replacement for severe aortic stenosisKarin H Humphries
Division of Cardiology, University of British Columbia, Vancouver, British Columbia, Canada
J Am Coll Cardiol 60:882-6. 2012..The aim of this study was to examine sex differences in outcome after transcatheter aortic valve replacement (TAVR) with real-world data from 2 large centers in Canada...
An administrative data merging solution for dealing with missing data in a clinical registry: adaptation from ICD-9 to ICD-10Danielle 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...
Identifying priorities in methodological research using ICD-9-CM and ICD-10 administrative data: report from an international consortiumCarolyn De Coster
Department of Community Health Sciences, University of Calgary, Calgary, Canada
BMC Health Serv Res 6:77. 2006..This paper presents a list of high-priority methodological areas for researchers using health administrative data...
Cross-provincial use of cardiac services: the importance of data-sharing for clinical registries and outcomes researchKarin H Humphries
St Paul s Hospital, Vancouver, Canada
Can J Cardiol 21:267-72. 2005....
Significant improvement in short-term mortality in women undergoing coronary artery bypass surgery (1991 to 2004)Karin H Humphries
Division of Cardiology, University of British Columbia, Vancouver, British Columbia, Canada
J Am Coll Cardiol 49:1552-8. 2007..This study sought to evaluate gender differences and trends in 30-day mortality after coronary artery bypass surgery (CABG)...
Statin use and recurrence of atrial fibrillation after successful cardioversionKarin H Humphries
Centre for Health Evaluation and Outcomes Sciences, St Paul s Hospital, Vancouver, British Columbia, Canada
Am Heart J 154:908-13. 2007..The role of statins in patients with existing AF is poorly understood. We examined the effect of statins on recurrence of AF in patients after successful cardioversion...
Population rates of hospitalization for atrial fibrillation/flutter in CanadaKarin H Humphries
University of British Columbia, Vancouver, Canada
Can J Cardiol 20:869-76. 2004..AF significantly increases the risk of stroke, and anticoagulation has been shown to reduce this risk. However, Canadian data on the prevalence of AF and the use of warfarin in these patients are lacking...
Angina with "normal" coronary arteries: sex differences in outcomesKarin H Humphries
Division of Cardiology, University of British Columbia, Vancouver, British Columbia, Canada
Am Heart J 155:375-81. 2008..The sex specificity of this finding is unclear. We therefore undertook an evaluation of sex differences in rehospitalization for acute coronary syndrome (ACS) or chest pain in patients with "angiographically normal" coronaries...
Transcatheter aortic valve replacement: outcomes of patients with moderate or severe mitral regurgitationStefan Toggweiler
St Paul s Hospital, University of British Columbia, Vancouver, British Columbia, Canada
J Am Coll Cardiol 59:2068-74. 2012..The aim of this study was to evaluate the impact of mitral regurgitation (MR) on outcomes after transcatheter aortic valve replacement (TAVR) and the impact of TAVR on MR...
Revascularization use and survival outcomes after cardiac catheterization in British Columbia and AlbertaChristopher R Thompson
Division of Cardiology, Department of Medicine, St Paul s Hospital, and the University of British Columbia, Room 2350 1081 Burrard Street, Vancouver, BC V6Z 1Y6, Canada
Can J Cardiol 20:1417-23. 2004..Alberta and British Columbia have comprehensive cardiac databases that provide detailed demographic, clinical and procedural data, including coronary anatomy, on all patients undergoing cardiac catheterization...
Progression to chronic atrial fibrillation after the initial diagnosis of paroxysmal atrial fibrillation: results from the Canadian Registry of Atrial FibrillationCharles R Kerr
Department of Medicine, University of British Columbia, Vancouver, BC, Canada
Am Heart J 149:489-96. 2005..After its initial diagnosis, atrial fibrillation (AF) may progress from paroxysmal to chronic AF (CAF). The rate of progression and risk factors for progression are not clearly defined...
Prognostic differences between atrial fibrillation and atrial flutterPaul Lelorier
Division of Cardiology, University of Western Ontario, London, Ontario, Canada
Am J Cardiol 93:647-9. 2004..We also evaluated warfarin use over time and compared left atrial dimensions in patients with atrial flutter with those with atrial fibrillation...
Outcomes after percutaneous coronary interventions in patients with CKD: improved outcome in the stenting eraCaroline Stigant
Department of Health Care and Epidemiology, St Paul's Hospital, University of British Columbia, Vancouver, BC, Canada
Am J Kidney Dis 45:1002-9. 2005..CONCLUSION: Patients with CKD undergoing PCI in the stenting era show improved outcomes. Additional studies are needed to determine optimal revascularization strategies in patients with CKD...
Elevation in cardiovascular disease risk in South Asians is mediated by differences in visceral adipose tissueScott A Lear
Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, British Columbia, Canada
Obesity (Silver Spring) 20:1293-300. 2012..Higher levels of risk factors for CVD in South Asians are predominantly because of the unique phenotype of South Asians having greater VAT than Europeans even at the same BMI...
Impact of coronary artery disease on outcomes after transcatheter aortic valve implantationJean Bernard Masson
St Paul s Hospital, University of British Columbia, Vancouver, British Columbia, Canada
Catheter Cardiovasc Interv 76:165-73. 2010..Implications of CAD and preprocedural revascularization in the setting of transcatheter aortic valve implantation (TAVI) are not known...
Antiarrhythmic use from 1991 to 2007: insights from the Canadian Registry of Atrial Fibrillation (CARAF I and II)Jason G Andrade
St Paul s Hospital and University of British Columbia, Vancouver, British Columbia, Canada
Heart Rhythm 7:1171-7. 2010..The pharmacologic management of atrial fibrillation (AF), the most common sustained cardiac arrhythmia, has been traditionally dichotomized into control of ventricular rate or re-establishment and maintenance of sinus rhythm...
N-acetylcysteine reduces urinary albumin excretion following contrast administration: evidence of biological effectAdeera Levin
Division of Nephrology, Room 6010, Providence Health Care Saint Paul s Hospital, University of British Columbia, 1081 Burrard Street, Vancouver V6Z 1Y6, BC, Canada
Nephrol Dial Transplant 22:2520-4. 2007....
Prophylactic intravenous magnesium sulphate in addition to oral {beta}-blockade does not prevent atrial arrhythmias after coronary artery or valvular heart surgery: a randomized, controlled trialRichard C Cook
University of British Columbia, Vancouver, Canada
Circulation 120:S163-9. 2009....
Visceral adipose tissue accumulation differs according to ethnic background: results of the Multicultural Community Health Assessment Trial (M-CHAT)Scott A Lear
School of Kinesiology, Simon Fraser University, Vancouver, BC, Canada
Am J Clin Nutr 86:353-9. 2007..Previous studies have not adequately investigated differences in discrete regions of abdominal adiposity across ethnic groups...
The use of BMI and waist circumference as surrogates of body fat differs by ethnicityScott A Lear
Simon Fraser University, School of Kinesiology, 515 West Hastings Street, Vancouver, BC, Canada V6B 5K3
Obesity (Silver Spring) 15:2817-24. 2007..To compare the prediction of percentage body fat using BMI and visceral adipose tissue (VAT) using waist circumference (WC) in individuals of Chinese, European, and South Asian origin...
Population rates of invasive cardiac procedures in British Columbia, 1995 to 2001Gordon E Pate
Interventional Cardiology Research, St Paul's Hospital, Vancouver, British Columbia, Canada
Can J Cardiol 20:712-6. 2004..The PCI rate is rising compared with the CABG rate, likely reflecting changes in patient selection and improved PCI technology, as well as a limited ability of the system to provide surgical procedures...
Percutaneous coronary intervention and 30-day mortality: the British Columbia PCI risk scoreJaap N Hamburger
Division of Cardiology, University of British Columbia, Vancouver, British Columbia, Canada
Catheter Cardiovasc Interv 74:377-85. 2009..To construct a calculator to assess the risk of 30-day mortality following PCI...
Early clinical outcomes after transapical aortic valve implantation: a propensity-matched comparison with conventional aortic valve replacementJennifer Higgins
Division of Cardiovascular Surgery, University of British Columbia, Vancouver, British Columbia, Canada
J Thorac Cardiovasc Surg 142:e47-52. 2011..The objective of this study is to use propensity scoring to compare early clinical outcomes after transapical aortic valve implantation and conventional aortic valve replacement...
Atrioventricular block after transcatheter balloon expandable aortic valve implantationAjay Sinhal
Heart Centre, St Paul s Hospital, University of British Columbia, Vancouver, British Columbia, Canada
JACC Cardiovasc Interv 1:305-9. 2008..Transcatheter aortic valve replacement (AVR) is a promising approach to aortic valve disease. The implications of this new therapy are not entirely known. We describe the potential for the development of new atrioventricular (AV) block...
True versus reported waiting times for valvular aortic stenosis surgeryBrad I Munt
Department of Medicine, University of British Columbia, St Paul s Hospital, Vancouver
Can J Cardiol 22:497-502. 2006....
A proposed clinical model for efficient utilization of invasive coronary angiographyCarolyn M Taylor
University of British Columbia, Vancouver, British Columbia, Canada
Am J Cardiol 106:457-62. 2010..The patient population identified by this tool may represent a population best suited to a noninvasive diagnostic strategy...
Abbreviated infusion of eptifibatide after successful coronary intervention The BRIEF-PCI (Brief Infusion of Eptifibatide Following Percutaneous Coronary Intervention) randomized trialAnthony Y Fung
Vancouver General Hospital, British Columbia, Canada
J Am Coll Cardiol 53:837-45. 2009..The purpose of this study was to assess whether the early discontinuation of eptifibatide infusion in nonemergent percutaneous coronary intervention (PCI) is associated with a higher frequency of periprocedural ischemic myonecrosis...
Immigration presents a potential increased risk for atherosclerosisScott A Lear
Simon Fraser University, British Columbia, Canada
Atherosclerosis 205:584-9. 2009..The purpose of this study was to determine the independent association of time since immigration with sub-clinical atherosclerosis in immigrants of Chinese, European and South Asian origin...
Refined characterization of the association between kidney function and mortality in patients undergoing cardiac catheterizationBrenda R Hemmelgarn
Department of Medicine, University of Calgary, Calgary, Alberta, Canada
Eur Heart J 27:1191-7. 2006..73 m(2). These findings provide considerable refinement in our understanding of eGFR as a powerful prognostic marker in patients with CVD undergoing cardiac catheterization...
N-acetylcysteine for prevention of radiographic contrast material-induced nephropathy: is the intravenous route best?Stephen J Shalansky
Pharmacy Department, St Paul s Hospital, and Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, British Columbia, Canada
Pharmacotherapy 25:1095-103. 2005....
Visceral adipose tissue, a potential risk factor for carotid atherosclerosis: results of the Multicultural Community Health Assessment Trial (M-CHAT)Scott A Lear
School of Kinesiology, Simon Fraser University, Vancouver, BC, Canada
Stroke 38:2422-9. 2007..We hypothesized that VAT is an independent risk factor for atherosclerosis...
Gender differences in symptoms of myocardial ischaemiaMartha H Mackay
School of Nursing, University of British Columbia, St Paul s Hospital, B342, 1081 Burrard St, Vancouver, British Columbia, Canada V6Z 1Y6
Eur Heart J 32:3107-14. 2011..Using percutaneous coronary intervention (PCI) balloon inflation as a model of myocardial ischaemia, we explored sex differences in reported symptoms of ischaemia...
Lipoprotein(a) is an independent risk factor for cardiovascular disease in heterozygous familial hypercholesterolemiaDaniel T Holmes
St Paul s Hospital Lipid Clinic and the University of British Columbia Department of Pathology and Laboratory Medicine, Vancouver, Canada
Clin Chem 51:2067-73. 2005..We sought to examine the utility of this lipoprotein as a predictor of CVD outcomes in the HFH population at our lipid clinic...
Cost comparison of ablation versus antiarrhythmic drugs as first-line therapy for atrial fibrillation: an economic evaluation of the RAAFT pilot studyYaariv Khaykin
Division of Cardiology, Southlake Regional Health Center, Newmarket, Ontario, Canada
J Cardiovasc Electrophysiol 20:7-12. 2009..The objective of this study was to perform an economic evaluation of RFA versus antiarrhythmic drug therapy (AAD) as first-line treatment of symptomatic paroxysmal AF...
Appropriateness of current thresholds for obesity-related measures among Aboriginal peopleScott A Lear
School of Kinesiology, Simon Fraser University, Burnaby, BC
CMAJ 177:1499-505. 2007..We compared the risk of cardiovascular disease among Canadian Aboriginal and European populations using the current thresholds for body mass index and waist circumference...
A randomized controlled trial of intravenous N-acetylcysteine for the prevention of contrast-induced nephropathy after cardiac catheterization: lack of effectJohn G Webb
Division of Cardiology, Pharmacy Department, St Paul s Hospital, University of British Columbia, Vancouver, British Columbia, Canada
Am Heart J 148:422-9. 2004..The objective of this study was to evaluate, in a blinded, randomized, placebo-controlled fashion, whether intravenous NAC reduced CIN in the setting of cardiac catheterization in patients with preexisting renal insufficiency...
New-onset sustained ventricular tachycardia and fibrillation early after cardiac operationsJohn A Yeung-Lai-Wah
Division of Cardiology and Cardiovascular Surgery, St Paul's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
Ann Thorac Surg 77:2083-8. 2004....
Outcome of mitral valve repair or replacement: a comparison by propensity score analysisRobert R Moss
Division of Cardiology, St. Paul's Hospital, Vancouver, BC, Canada
Circulation 108:II90-7. 2003..CONCLUSIONS: We used propensity score methods to reduce selection bias in a population-based cohort of patients undergoing MV repair/replacement. Repair was associated with better survival, but a trend to increased re-operation...
Thromboembolic events in patients on extracorporeal membrane oxygenation without anticoagulationYoan Lamarche
From the St Paul s Hospital, Providence Health Care, University of British Columbia, Vancouver, BC Canada
Ann Surg 5:424-9. 2010..However, bleeding complications are common. We report our experience of VA-ECMO without systemic anticoagulation...
Study design of the Multicultural Community Health Assessment Trial (M-CHAT): a comparison of body fat distribution in four distinct populationsScott A Lear
School of Kinesiology, Simon Fraser University, Vancouver, British Columbia
Ethn Dis 16:96-100. 2006..The purpose of the study is to compare the relationship between visceral adipose tissue (VAT) and total body fat in men and women of Aboriginal, Chinese, and South Asian origin with a similar group of men and women of European origin...
Risks and benefits of hormone replacement therapy: the evidence speaksKarin H Humphries
Division of Cardiology, Department of Medicine, St. Paul's Hospital, University of British Columbia and Centre for Health Evaluation and Outcome Sciences, Vancouver, BC
CMAJ 168:1001-10. 2003..In this article we review the current evidence of the risks and benefits of HRT...
Use of valve surgery in CanadaAnsar Hassan
Division of Cardiac Surgery, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
Can J Cardiol 20:149-54. 2004..Variation in rates of valve surgery exists across provinces. These results provide a starting point from which to track future trends in use and outcomes for these major procedures...
The association among renal insufficiency, pharmacotherapy, and outcomes in 6,427 patients with heart failure and coronary artery diseaseJustin Ezekowitz
Division of Cardiology, University of Alberta, Edmonton, Alberta, Canada T6G 2R7
J Am Coll Cardiol 44:1587-92. 2004..Patients with renal insufficiency are less likely to be prescribed efficacious therapies, but have better outcomes if they receive these medications...
The association of left atrial size and occurrence of atrial fibrillation: a prospective cohort study from the Canadian Registry of Atrial FibrillationRatika Parkash
University of Ottawa, Ottawa, Ontario, Canada
Am Heart J 148:649-54. 2004..Patients with no or paroxysmal recurrence had no change in LA dimension over a 4-year period. These findings have implications in tailoring modes of therapy in patients with AF...
A comprehensive view of sex-specific issues related to cardiovascular diseaseLouise Pilote
Division of Internal Medicine, The McGill University Health Centre Research Institute, McGill University, Montreal, Que
CMAJ 176:S1-44. 2007..However, the interaction between sex-and gender-related factors and CVD outcomes in women remains largely unknown...
Comparison of provincial prescription drug plans and the impact on patients' annual drug expendituresVirginie Demers
Division of General Internal Medicine, McGill University Health Centre, Montreal, Que
CMAJ 178:405-9. 2008..Provincial governments independently establish reimbursement plans. We sought to describe variations in publicly funded provincial drug plans across Canada and to examine the impact of this variation on patients' annual expenditures...
