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Changing use of coronary angioplasty and coronary bypass surgery in the treatment of chronic coronary artery disease.

Changes in the use of coronary artery bypass grafting (CABG) and percutaneous transluminal coronary angioplasty (PTCA) over the last several years have resulted in a new and different environment for the interventional treatment of coronary artery disease. This study explores these changes as applied to the treatment of chronic coronary artery disease. The study population comprised 14,078 patients undergoing diagnostic cardiac catheterization between 1981 and 1988. In 1981, 1,704 patients underwent a first known cardiac catheterization at Emory University Hospital or Crawford W. Long Hospital and were found to have significant coronary artery disease. Of these patients, 51.7% were treated medically, 44.0% by CABG and 4.3% with PTCA. A similar group comprised 1,719 patients in 1988. Of this group 41.2% were treated medically, 28.5% with CABG and 30.3% with PTCA. The data reveal a much more complex phenomenon than a simple increase in PTCA for the treatment of coronary disease at the expense of CABG. The CABG group aged such that the percent of the CABG population more than 65 years old increased from 26.0% of the total in 1981 to 44.9% of the total in 1988. The percent of patients with ejection fractions less than 50% in the CABG population increased from 24.5% in 1981 to 29.7% in 1988. The PTCA population had less severe disease, was younger and had better left ventricular function.(ABSTRACT TRUNCATED AT 250 WORDS)

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