Author + information
- Received September 12, 1995
- Revision received December 20, 1995
- Accepted January 23, 1996
- Published online June 1, 1996.
- Peter N. Ruygrok, MB,ChB,FRACP∗,2,
- Peter P.T. de Jaegere, PhD,
- Ron T. van Domburg, MSc,
- Marcel J. van den Brand, PhD,
- Patrick W. Serruys, PhD,FACC and
- Pim J. de Feyter, PhD,FACC
Objectives.This study reports the 10-year outcome of 856 consecutive patients who underwent attempted coronary angioplasty at the Thoraxcenter during the years 1980 to 1985.
Background.Coronary balloon angioplasty was first performed in 1977, and this procedure was introduced into clinical practice at the Thoraxcenter in 1980. Although advances have been made, extending our knowledge of the long-term outcome in terms of survival and major cardiac events remains of interest and a valuable guide in the treatment of patients with coronary artery disease.
Methods.Details of survival, cardiac events, symptoms and medication were retrospectively obtained from the Dutch civil registry, medical records or by letter or telephone or from the patient's physician and entered into a dedicated data base. Patient survival curves were constructed, and factors influencing survival and cardiac events were identified.
Results.The procedural clinical success rate was 82%. Follow-up information was obtained in 837 patients (97.8%). Six hundred forty-one patients (77%) were alive, of whom 334 (53%) were symptom free, and 254 (40%) were taking no antianginal medication. The overall 5- and 10-year survival rates were 90% (95% confidence interval [CI] 87.6% to 92.4%) and 78% (95% CI 75.0% to 81.0%), respectively, and the respective freedom from significant cardiac events (death, myocardial infarction, coronary artery bypass surgery and repeat angioplasty) was 57% (95% CI 53.4% to 60.6%) and 36% (95% CI 32.4% to 39.6%). Factors that were found to adversely influence 10-year survival were age ≥60 years (≥60 years [67%], 50 to 59 years [82%], <50 years [88%]), multivessel disease (multivessel disease [69%], single-vessel disease [82%]), impaired left ventricular function (ejection fraction <50% [57%], ≥50% [80%]) and a history of previous myocardial infarction (previous myocardial infarction [72%], no previous infarction [83%]). These factors were also found to be independent predictors of death during the follow-up period by a multivariate stepwise logistic regression analysis. Other factors tested, with no influence on survival, were gender, procedural success and stability of angina at the time of intervention.
Conclusion.The long-term prognosis of patients after coronary angioplasty is good, particularly in those <60 years old with single-vessel disease and normal left ventricular function. The majority of patients are likely to experience a further cardiac event in the 10 years after their first angioplasty procedure.
↵∗ Present address and address for correspondence:Dr. Peter N. Ruygrok, Catheterization Rooms, Green Lane Hospital, Green Lane West, Auckland 3, New Zealand
↵2 Dr. Ruygrok is the recipient of a National Heart Foundation of New Zealand training fellowship.
☆ This study was presented in part at the 44th Annual Scientific Session of the American College of Cardiology, New Orleans, Louisiana, March 1995 and the Annual Meeting of the European Society of Cardiology, Amsterdam.
- Received September 12, 1995.
- Revision received December 20, 1995.
- Accepted January 23, 1996.