RT Journal Article
SR Electronic
T1 Serial six year quantitative angiographic follow up in asymptomatic patients following successful coronary angioplasty
JF Heart
JO Heart
FD BMJ Publishing Group Ltd and British Cardiovascular Society
SP 1179
OP 1182
DO 10.1136/hrt.2003.022772
VO 90
IS 10
A1 Takeda, Y
A1 Kobayashi, T
A1 Awata, N
A1 Sato, S
A1 Reiber, J H C
A1 Nakagawa, T
A1 Tsuchikane, E
A1 Katoh, O
A1 Kirino, M
A1 Kobayashi, T
A1 Yachiku, K
A1 Shibata, N
YR 2004
UL http://heart.bmj.com/content/90/10/1179.abstract
AB Objective: To evaluate long term (six years) lumen changes after balloon angioplasty by using quantitative coronary angiography. Methods: Complete serial quantitative coronary angiography (before and after angioplasty and at six months, three years, and six years) was performed in 100 patients with successful angioplasty and without subsequent repeated revascularisation. In all, 198 dilated segments were compared with 395 non-dilated segments that were obtained from non-target arteries of study patients. Results: From six months to three years after angioplasty, minimum lumen diameter (MLD) increased significantly by 0.13 (0.28) (mean (SD)) mm in dilated segments and decreased significantly by 0.04 (0.27) mm in non-dilated segments. From three years to six years, MLD remained stable in dilated segments but decreased further (by 0.04 (0.28) mm) in non-dilated segments. Consequently, the ΔMLD between six months and six years was larger in dilated segments than in non-dilated segments (0.12 (0.32) v −0.08 (0.34); p < 0.001). Further, ΔMLD from six months to six years correlated positively with the percentage diameter stenosis (DS) at six months in each group (dilated segments r  =  0.47, p < 0.0001; non-dilated segments r  =  0.49, p < 0.0001). Multivariate analysis showed that the only independent predictor of ΔMLD over six years for each group was the DS at six months. Conclusions: Lesion regression occurs within the first three years after angioplasty and reaches a plateau thereafter. Moreover, the stenosis severity at six months predicts the magnitude of late regression after angioplasty.