Abstract
The rate of progression of coronary artery stenoses (CAS) is not clear. Spontaneous regression may also occur.
Seventy-one CAS in 25 patients who were enrolled in a study of the effects of chromium on CAS were analysed. Coronary angiography was performed in multiple views and patients randomised to chromium or placebo treatment. Videodensitometric quantitative analysis was performed using a Vanguard XR70 Analyzer. After 1 year all patients were recatheterised. Corresponding frames from identical views were analysed. CAS were assessed with the observers blinded to the initial study results. No differences were found between chromium or placebo and the results have been combined. There was no overall progression of CAS as assessed by % area stenosis (p=0.65), % diameter stenosis (p=0.19), stenotic area (p=0.87), or stenotic diameter (p=0.99). However, 20% of individual lesions progressed, while 10% regressed, and 70% remained the same.
These changes must be taken into account in studies of interventions which may modify the course of coronary atherosclerosis, and if coronary by-pass surgery is to be performed with a 1 year delay after angiography.
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Balkin, J., Zion, M.M., Rosenmann, D. et al. Progression and regression of coronary artery disease in one year. Int J Cardiac Imag 9, 213–217 (1993). https://doi.org/10.1007/BF01145323
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DOI: https://doi.org/10.1007/BF01145323