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European Heart Journal 1989 10(Supplement G):18-21; doi:10.1093/eurheartj/10.suppl_G.18
Copyright © 1989 by the European Society of Cardiology.
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© 1989 The European Society of Cardiology

Detection of restenosis after coronary angioplasty for single-vessel disease: How reliable are exercise electrocardiography and scintigraphy in asymptomatic patients?

E. Schroeder*,, B. Marchandise*, P. De Coster{dagger}, C. Brichant{dagger}, K. Mitri*, D. Pieters* and R. Krémer*

* Divisions of Cardiology, University of Louvain Medical School, University Hospital of Mont-Godinne Yvoir, Belgium
{dagger} Nuclear Medicine, University of Louvain Medical School, University Hospital of Mont-Godinne Yvoir, Belgium

Address for correspondence: E. Schroeder. MD. University Hospital of Mont-Godinne, B-5180 Yvoir-Belgium

The diagnostic value of exercise electrocardiography and thallium myocardial scintigraphy for the detection of restenosis was assessed in 111 patients undergoing control angiography 6 months after successful coronary angioplasty. All patients were free of symptoms at the time of the study. A diameter reduction of 70% or more at the site of angioplasty was considered restenosis. The sensitivity of exercise electrocardiography is low (64%). Exercise ECG and scintigraphy are highly specific (respectively 90% and 93%). The predictive value of a positive ECG or thallium scintigraphy is poor (respectively 53% and 63%). The value of a negative scintigraphic result is slightly better than the predictive value of a negative ECG (98% vs 95%; NS). A negative exercise scintigraphy almost excludes severe restenosis. These non-invasive tests seem suitable for the detection of asymptomatic restenosis.

Key Words: Exercise ECG • exercise thallium scintigraphy • coronary angioplasty


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