Karl F Welke

Summary

Affiliation: Oregon Health and Science University
Country: USA

Publications

  1. ncbi request reprint Comparison of cardiac surgery volumes and mortality rates between the Society of Thoracic Surgeons and Medicare databases from 1993 through 2001
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Ann Thorac Surg 84:1538-46. 2007
  2. doi request reprint Measurement of quality in pediatric cardiac surgery: understanding the threats to validity
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    ASAIO J 54:447-50. 2008
  3. ncbi request reprint The relationship between hospital surgical case volumes and mortality rates in pediatric cardiac surgery: a national sample, 1988-2005
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Ann Thorac Surg 86:889-96; discussion 889-96. 2008
  4. ncbi request reprint Databases for assessing the outcomes of the treatment of patients with congenital and paediatric cardiac disease--a comparison of administrative and clinical data
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Cardiol Young 18:137-44. 2008
  5. ncbi request reprint Renal complications associated with the treatment of patients with congenital cardiac disease: consensus definitions from the Multi-Societal Database Committee for Pediatric and Congenital Heart Disease
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Cardiol Young 18:222-5. 2008
  6. ncbi request reprint Population-based perspective of long-term outcomes after surgical repair of partial atrioventricular septal defect
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Ann Thorac Surg 84:624-8; discussion 628-9. 2007
  7. doi request reprint Comparison of pediatric cardiac surgical mortality rates from national administrative data to contemporary clinical standards
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Ann Thorac Surg 87:216-22; discussion 222-3. 2009
  8. ncbi request reprint Current assessment of mortality rates in congenital cardiac surgery
    Karl F Welke
    Division of Cardiothoracic Surgery, Doernbecher Children s Hospital, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Ann Thorac Surg 82:164-70; discussion 170-1. 2006
  9. ncbi request reprint Invited commentary
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, OR 97239 3098, USA
    Ann Thorac Surg 81:553-4. 2006
  10. ncbi request reprint Limitations of hospital volume as a measure of quality of care for coronary artery bypass graft surgery
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Ann Thorac Surg 80:2114-9. 2005

Detail Information

Publications36

  1. ncbi request reprint Comparison of cardiac surgery volumes and mortality rates between the Society of Thoracic Surgeons and Medicare databases from 1993 through 2001
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Ann Thorac Surg 84:1538-46. 2007
    ....
  2. doi request reprint Measurement of quality in pediatric cardiac surgery: understanding the threats to validity
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    ASAIO J 54:447-50. 2008
    ..Detailed study of the processes of care by multicenter, multidisciplinary quality improvement initiatives may augment national databases in improving outcomes...
  3. ncbi request reprint The relationship between hospital surgical case volumes and mortality rates in pediatric cardiac surgery: a national sample, 1988-2005
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Ann Thorac Surg 86:889-96; discussion 889-96. 2008
    ..We sought to quantify the relationship between hospital volume and pediatric cardiac surgical mortality...
  4. ncbi request reprint Databases for assessing the outcomes of the treatment of patients with congenital and paediatric cardiac disease--a comparison of administrative and clinical data
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Cardiol Young 18:137-44. 2008
    ....
  5. ncbi request reprint Renal complications associated with the treatment of patients with congenital cardiac disease: consensus definitions from the Multi-Societal Database Committee for Pediatric and Congenital Heart Disease
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Cardiol Young 18:222-5. 2008
    ..Clinicians caring for patients with congenital heart disease will be able to use this list for databases, quality improvement initiatives, reporting of complications, and comparing strategies for treatment...
  6. ncbi request reprint Population-based perspective of long-term outcomes after surgical repair of partial atrioventricular septal defect
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Ann Thorac Surg 84:624-8; discussion 628-9. 2007
    ..This investigation was designed to determine long-term survival, reoperation rates, and functional status after surgical repair of partial atrioventricular septal defect (PAVSD)...
  7. doi request reprint Comparison of pediatric cardiac surgical mortality rates from national administrative data to contemporary clinical standards
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Ann Thorac Surg 87:216-22; discussion 222-3. 2009
    ..We calculated pediatric cardiac surgery mortality rates from administrative data and compared them with widely quoted standards from clinical databases...
  8. ncbi request reprint Current assessment of mortality rates in congenital cardiac surgery
    Karl F Welke
    Division of Cardiothoracic Surgery, Doernbecher Children s Hospital, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Ann Thorac Surg 82:164-70; discussion 170-1. 2006
    ..Our hypotheses are that (1) mortality rates at high-quality pediatric cardiac programs are lower than published national results despite (2) a change in case mix with a shift away from low complexity operations...
  9. ncbi request reprint Invited commentary
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, OR 97239 3098, USA
    Ann Thorac Surg 81:553-4. 2006
  10. ncbi request reprint Limitations of hospital volume as a measure of quality of care for coronary artery bypass graft surgery
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Ann Thorac Surg 80:2114-9. 2005
    ..The objective of this study is to quantify the relationship between hospital volume alone and CABG mortality...
  11. doi request reprint The complex relationship between pediatric cardiac surgical case volumes and mortality rates in a national clinical database
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Ore 97239 3098, USA
    J Thorac Cardiovasc Surg 137:1133-40. 2009
    ..We sought to determine the association between pediatric cardiac surgical volume and mortality using sophisticated case-mix adjustment and a national clinical database...
  12. ncbi request reprint Mortality rate is not a valid indicator of quality differences between pediatric cardiac surgical programs
    Karl F Welke
    Division of Cardiothoracic Surgery, Department of Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Ann Thorac Surg 89:139-44; discussion 145-6. 2010
    ..Our hypothesis is that case volumes and mortality rates present in pediatric cardiac surgery are too low to allow the use of mortality to differentiate between hospitals...
  13. ncbi request reprint Advances in congenital heart surgery
    Karl F Welke
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239, USA
    Curr Opin Pediatr 17:574-8. 2005
    ..We provide an overview of the past year's literature on congenital heart surgery...
  14. doi request reprint Common ground: measuring intrainstitutional mortality among pediatric surgical procedures
    Kirk A Caddell
    School of Medicine, Oregon Health and Science University, Portland, OR, USA
    Surgery 149:7-14. 2011
    ..We sought to determine to what degree mortality rates for high-risk pediatric surgical procedures were correlated within institutions...
  15. doi request reprint Gender differences in mortality after mitral valve operation: evidence for higher mortality in perimenopausal women
    Howard K Song
    The Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239, USA
    Ann Thorac Surg 85:2040-4; discussion 2045. 2008
    ..We hypothesized that gender influences mortality after mitral valve operations and that it varies with age, especially during periods of declining ovarian function...
  16. ncbi request reprint The rush to atrial septal defect closure: is the introduction of percutaneous closure driving utilization?
    Tara Karamlou
    Department of Surgery, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    Ann Thorac Surg 86:1584-90; discussion 1590-1. 2008
    ..We sought to determine nationwide trends in the use of percutaneous compared with surgical closure and their respective outcomes over an 18-year period...
  17. ncbi request reprint Adults or big kids: what is the ideal clinical environment for management of grown-up patients with congenital heart disease?
    Tara Karamlou
    Division of Cardiothoracic Surgery, Oregon Health and Science University, 3181 SW Sam Jackson Park Rd, Mail Code L 353, Portland, OR 97239, USA
    Ann Thorac Surg 90:573-9. 2010
    ....
  18. doi request reprint Long-term results after Carpentier-Edwards pericardial aortic valve implantation, with attention to the impact of age
    Karl F Welke
    Medical Data Research Center, Providence Health and Services, Portland, Oregon 97225, USA
    Heart Surg Forum 14:E160-5. 2011
    ....
  19. doi request reprint Improved quality and cost-effectiveness of coronary artery bypass grafting in the United States from 1988 to 2005
    Howard K Song
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, OR 97239, USA
    J Thorac Cardiovasc Surg 137:65-9. 2009
    ..This study was undertaken to assess the impact of increasing patient complexity and health care cost on coronary artery bypass grafting quality and cost-effectiveness in the United States over an 18-year period...
  20. doi request reprint Geography or pathology? Regional variation in atrial septal defect closure rates and techniques
    Wendy L Walker
    School of Medicine, Oregon Health and Science University, Portland, Oregon, United States of America
    Cardiol Young 21:577-84. 2011
    ..Whether or not closure rates are uniform or vary due to differences in regional practice patterns is unknown. We sought to investigate this by comparing regional rates of closure across Florida...
  21. doi request reprint Evolution of treatment options and outcomes for hypoplastic left heart syndrome over an 18-year period
    Tara Karamlou
    Department of Surgery, L 223, Oregon Health and Science University, 3181 Sam Jackson Park Rd, Portland, OR 97239, USA
    J Thorac Cardiovasc Surg 139:119-26; discussion 126-7. 2010
    ..We aimed to describe management strategies for neonates with hypoplastic left heart syndrome over the past 18 years in the United States and to identify determinants of institutional management decisions...
  22. ncbi request reprint The influence of surgeon specialty on outcomes in general thoracic surgery: a national sample 1996 to 2005
    Paul H Schipper
    Division of Cardiothoracic Surgery, Oregon Health and Science University, Portland, Oregon 97239 3011, USA
    Ann Thorac Surg 88:1566-72; discussion 1572-3. 2009
    ..While general thoracic surgical procedures are performed by several different surgical subspecialties, debate remains as to whether surgeon specialty impacts outcomes...
  23. ncbi request reprint Mortality as an outcome parameter for pediatric heart surgery
    Karl F Welke
    Division of Cardiothoracic Surgery, Doernbecher Children s Hospital, Oregon Health and Science University, Portland, Oregon 97239 3098, USA
    ASAIO J 52:552-5. 2006
    ..We review the risk adjustment methodologies and data sources used to produce mortality statistics. In addition, the issues of data quality and defining mortality are discussed...
  24. ncbi request reprint Patient characteristics can predict improvement in functional health after elective coronary artery bypass grafting
    Karl F Welke
    Division of Cardiothoracic Surgery, University of Iowa Hospitals and Clinics, Iowa City, Iowa 52242, USA
    Ann Thorac Surg 75:1849-55; discussion 1855. 2003
    ..The purpose of this study is to determine the effect of CABG on the functional health of an elective population and to identify preoperative patient characteristics associated with improved functional health after surgery...
  25. ncbi request reprint What factors influence provider knowledge of a congestive heart failure guideline in a national health care system?
    Karl F Welke
    Division of Cardiothoracic Surgery, The University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
    Am J Med Qual 18:122-7. 2003
    ..Guideline implementation efforts that target multiple organizational levels may increase provider knowledge...
  26. doi request reprint Cardiac surgery in infants with low birth weight is associated with increased mortality: analysis of the Society of Thoracic Surgeons Congenital Heart Database
    Christopher L Curzon
    Department of Pediatrics, Division of Pediatric Cardiology, Duke University Medical Center, Durham, NC 27710, USA
    J Thorac Cardiovasc Surg 135:546-51. 2008
    ....
  27. ncbi request reprint Hospital volume and selection of valve type in older patients undergoing aortic valve replacement surgery in the United States
    Erik B Schelbert
    Division of Cardiovascular Diseases, Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City 52242, USA
    Circulation 111:2178-82. 2005
    ..Hospital volume has been linked to quality of care. The relation between hospital volume and recommended use of bioprosthetic valves in older patients undergoing aortic valve replacement (AVR) is unknown...
  28. ncbi request reprint Atrial fibrillation correction surgery: lessons from the Society of Thoracic Surgeons National Cardiac Database
    James S Gammie
    Division of Cardiac Surgery, University of Maryland Medical Center, Baltimore, Maryland 21201, USA
    Ann Thorac Surg 85:909-14. 2008
    ..We also examined the subset of patients having mitral valve surgery to determine whether concurrent surgical AF correction procedures were associated with an increased risk of morbidity or mortality...
  29. ncbi request reprint Facility-level factors influencing chronic heart failure care process performance in a national integrated health delivery system
    Usha Subramanian
    Center on Implementing Evidence Based Practice, Richard L Roudebush VA Medical Center, and Department of Medicine, Indiana University School of Medicine IUSM, Indianapolis, Indiana 46202, USA
    Med Care 45:28-45. 2007
    ..However, the organizational factors and implementation approaches that influence adherence to national guidelines are poorly understood...
  30. ncbi request reprint Accuracy of the aristotle basic complexity score for classifying the mortality and morbidity potential of congenital heart surgery operations
    Sean M O'Brien
    Duke University Medical Center, Durham, North Carolina, USA
    Ann Thorac Surg 84:2027-37; discussion 2027-37. 2007
    ..This collaborative study combined two multiinstitution databases to assess how well the ABC score predicts the actual morbidity and mortality potential of 131 congenital heart surgery procedures...
  31. ncbi request reprint Treatment variation in older black and white patients undergoing aortic valve replacement
    Erik B Schelbert
    Division of Cardiovascular Diseases, Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA, USA
    Circulation 112:2347-53. 2005
    ..However, differential use of hospitals with variable practice patterns might also contribute to variations in care...
  32. ncbi request reprint Contemporary impact of state certificate-of-need regulations for cardiac surgery: an analysis using the Society of Thoracic Surgeons' National Cardiac Surgery Database
    Verdi J DiSesa
    The Chester County Hospital, West Chester, PA 19301, USA
    Circulation 114:2122-9. 2006
    ..It is unclear whether these findings apply in a general population and after controlling for detailed clinical characteristics and region...
  33. ncbi request reprint Classifying the effectiveness of Veterans Affairs guideline implementation approaches
    Bonnie J BootsMiller
    Center for Research in the Implementation of Innovative Strategies in Practice, Iowa City Veterans Affairs Medical Center, Iowa City, IA 52246, USA
    Am J Med Qual 19:248-54. 2004
    ..However, VA hospitals should consider selective combinations of approaches to ensure the use of the most effective implementation methods...
  34. ncbi request reprint Physician process and patient outcome measures for diabetes care: relationships to organizational characteristics
    Marcia M Ward
    Department of Health Management and Policy, University of Iowa, Iowa City, Iowa 52242 1008, USA
    Med Care 42:840-50. 2004
    ..Optimal diabetes management relies on providers adhering to evidence-based practice guidelines in the processes of care delivery and patients adhering to self-management recommendations to maximize patient outcomes...
  35. ncbi request reprint Validity of the Society of Thoracic Surgeons National Adult Cardiac Surgery Database
    Karl F Welke
    Ann Thorac Surg 77:1137-9. 2004
  36. ncbi request reprint Cardiac revascularization in specialty and general hospitals
    Fred H Edwards
    N Engl J Med 352:2754-6; author reply 2754-6. 2005