[Quantitative coronary angiography: progression and regression of coronary stenoses--an intervention study with fenofibrate].

: In order to examine the effect of fenofibrate on coronary narrowings, within the framework of a prospective intervention study, we treated a total of 44 hypercholesterolemic patients (who were in our clinic to undergo PTCA) with diet and fenofibrate (200-400 mg/day) over a period of 3 years. After a mean interval of 21 months, control angiographies were performed in nearly identical projections for 21 patients on clinical grounds. The minor and medium-grade narrowings of the reangiographed patients at the beginning and at the end of the intervention interval were measured by means of digital image processing and automatic contour detection. The measuring parameters were percent diameter reduction (% DR) and percent plaque area (%PA). With regard to their angiographic progression, the 21 reangiographed patients of the intervention group were compared to a comparison group consisting likewise of 21 patients of similar age and sex distribution and persistently high lipid and lipoprotein levels. During the intervention period, the reangiographed patients of the intervention group showed the following changes of the lipid and lipoprotein levels in contrast to the outset values: cholesterol -19 +/- 8%, LDL -20 +/- 14%, HDL +19 +/- 44%, triglycerides -30 +/- 31%.(ABSTRACT TRUNCATED AT 250 WORDS)