Abstract

The objective of this study is to perform a multidimensional technology assessment of percutaneous transluminal coronary angioplasty (PTCA), a recently introduced method of treating patients with coronary artery disease (CAD). Patients with chronic (more than 6 weeks) stable angina who are found at cardiac catheterization to have a greater than or equal to 75% stenosis of one or more coronary arteries will be eligible for this study. All patients will be classified by their attending angiographer according to their anatomic suitability for PTCA and for coronary bypass surgery (CABG). In addition, PTCA patients will be classified according to the therapy they would have received had PTCA not been available. A detailed data base consisting of demographic, clinical, catheterization, functional status, employment status and health resource consumption data will be collected on each patient prospectively. Each patient will also be followed for at least two years to determine outcome in terms of their clinical, functional and employment status and health resource consumption. Analyses will be performed to compare health outcomes and health care costs for PTCA patients and patients with equivalent severity of illness treated either medically or with CABG. Health outcomes to be examined include freedom from cardiac events (death, nonfatal myocardial infarction), functional capacity (measured by a new index developed and validated at Duke) and employment status. These data will be analyzed to determined the marginal costs and marginal benefits of PTCA as compared with medical therapy and coronary bypass surgery. Patient characteristics associated with high and low cost-effectiveness of PTCA will be identified to assist medical decision-making concerning individual patients. These data will also be analyzed to assess the overall impact of PTCA on health costs and outcomes under current patterns of utilization, as well as under alternative utilization patterns of interest to policy makers. Thus, results of this study should provide clinicians with methods for predicting the most cost- effective therapeutic choice for an individual CAD patient and provide health care policy makers with valid, sensitive tools for making resource allocation decisions.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
Agency for Healthcare Research and Quality (AHRQ)
Type
Research Demonstration and Dissemination Projects (R18)
Project #
1R18HS005635-01
Application #
3442538
Study Section
(HCT)
Project Start
1987-02-01
Project End
1992-01-31
Budget Start
1987-02-01
Budget End
1988-01-31
Support Year
1
Fiscal Year
1987
Total Cost
Indirect Cost

  Institution

Name
Duke University
Department
Type
Schools of Medicine
DUNS #
071723621
City
Durham
State
NC
Country
United States
Zip Code
27705

  Publications

Peterson, E D; DeLong, E R; Jollis, J G et al. (1998) The effects of New York's bypass surgery provider profiling on access to care and patient outcomes in the elderly. J Am Coll Cardiol 32:993-9
Peterson, E D; Shaw, L K; DeLong, E R et al. (1997) Racial variation in the use of coronary-revascularization procedures. Are the differences real? Do they matter? N Engl J Med 336:480-6
Barbagelata, A; Granger, C B; Topol, E J et al. (1995) Frequency, significance, and cost of recurrent ischemia after thrombolytic therapy for acute myocardial infarction. TAMI Study Group. Am J Cardiol 76:1007-13
Mark, D B; Hlatky, M A; Califf, R M et al. (1995) Cost effectiveness of thrombolytic therapy with tissue plasminogen activator as compared with streptokinase for acute myocardial infarction. N Engl J Med 332:1418-24
Mark, D B; Naylor, C D; Hlatky, M A et al. (1994) Use of medical resources and quality of life after acute myocardial infarction in Canada and the United States. N Engl J Med 331:1130-5
Mark, D B; Shaw, L K; DeLong, E R et al. (1994) Absence of sex bias in the referral of patients for cardiac catheterization. N Engl J Med 330:1101-6
Jollis, J G; Peterson, E D; DeLong, E R et al. (1994) The relation between the volume of coronary angioplasty procedures at hospitals treating Medicare beneficiaries and short-term mortality. N Engl J Med 331:1625-9
Mark, D B (1994) Costs of interventional cardiac procedures. J Interv Cardiol 7:369-78
Peterson, E D; Jollis, J G; Bebchuk, J D et al. (1994) Changes in mortality after myocardial revascularization in the elderly. The national Medicare experience. Ann Intern Med 121:919-27
Jollis, J G; Ancukiewicz, M; DeLong, E R et al. (1993) Discordance of databases designed for claims payment versus clinical information systems. Implications for outcomes research. Ann Intern Med 119:844-50

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