[Risk of side branch occlusion after coronary Palmaz-Schatz stenting].
The immediate and long-term patency of lesion-associated side branches after Palmaz-Schatz stent implantation was assessed by coronary angiography in 78 patients (83 lesions) at baseline, before and immediately after Palmaz-Schatz stent placement, and at 6 months. The patency of side branches was then analyzed. Of 83 lesions stented, 48 stent placements spanned 53 side branches with a diameter > or = 0.5 mm. Ten (19%) side branches were occluded before and 14 (26%) after stenting, and 4 (8%) at 6 months. Side branch ostial stenosis (> or = 50%) was present in 17 side branches; 5 (29%) with ostial stenosis became occluded before and 12 (71%) after stenting. Four of nine (44%) side branches arising from stenosis became occluded after predilatation and five (56%) after stenting. These findings demonstrate that both ostial stenosis and the location of side branches are associated with side branch occlusion.
Hayashi
S
S
Kanagawa Cardiovascular and Respiratory Center, Yokohama.
Tohyama
S
S
Shindo
T
T
Fukui
K
K
Shiba
K
K
Nakao
M
M
Nakagawa
M
M
Harada
K
K
Ishii
M
M
D000328:Adult; D000368:Aged; D017023:Coronary Angiography; D003327:Coronary Disease / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D003331:Coronary Vessels / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012306:Risk; D015607:Stents / Q000009:adverse effects; D016896:Treatment Outcome; D014654:Vascular Patency