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European Heart Journal 1998 19(7):1027-1033; doi:10.1053/euhj.1998.0870
Copyright © 1998 by the European Society of Cardiology.
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Angiographic progression in patients with angina pectoris and normal or near normal coronary angiograms who are restudied due to unstable symptoms

I.D Cox, R.A Schwartzman, F Atienza, S.J Brown and J.C Kaskif1

Coronary Artery Disease Research Group, Department of Cardiological Sciences, St. George’s Hospital Medical School, London, U.K.

accepted January 12, 1998

Background

Syndrome X patients commonly remain symptomatic during follow-up and may be readmitted with unstable anginal symptoms. Angiographic disease progression must be considered as a possible mechanism for instability, particularly where multiple coronary risk factors are present and an interval of several years has elapsed since previous angiography.

Methods and Results

We reviewed data from 139 consecutive patients with chest pain and normal or near normal coronary angiograms (101 patients with completely normal angiograms and 38 patients with minimal lumenal irregularities). During a 5-year period, 24 patients (19 women, median age 56 years) underwent repeat angiography due to primary unstable angina (median interval between angiograms 58 months (range 8–130 months)). This group included three patients with minimal lumenal irregularities and four patients with left bundle branch block. Only two patients had progression to significant angiographic stenosis (>30% diameter reduction); both were male patients with minimal irregularities at baseline angiography, left bundle branch block and multiple coronary risk factors. However, overall only two of 18 (11%) patients with one or more conventional coronary risk factors had angiographic progression.

Conclusion

Unstable symptoms in patients with chest pain and previously normal or near normal coronary arteriograms are rarely due to angiographic disease progression. However, the presence of minimal lumenal irregularities at baseline angiography and LBBB may identify a sub-group at increased risk.

Key Words: Angiographic progression • chest pain with normal coronaries • unstable angina

f1 Correspondence: Dr J. C. Kaski, Coronary Artery Disease Research Group, Department of Cardiological Sciences, St. George’s Hospital Medical School, Cranmer Terrace, Tooting, London SW17 0RE, U.K.


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