FOLLOW-UP PATENCY OF SIDE BRANCHES COVERED BY INTRACORONARY PALMAZ-SCHATZ STENT

Citation
M. Pan et al., FOLLOW-UP PATENCY OF SIDE BRANCHES COVERED BY INTRACORONARY PALMAZ-SCHATZ STENT, The American heart journal, 129(3), 1995, pp. 436-440
Citations number
12
Categorie Soggetti
Cardiac & Cardiovascular System
Journal title
ISSN journal
00028703
Volume
129
Issue
3
Year of publication
1995
Pages
436 - 440
Database
ISI
SICI code
0002-8703(1995)129:3<436:FPOSBC>2.0.ZU;2-X
Abstract
To assess the risk of late side branch occlusion after Palmaz-Schatz s tent deployment, we analyzed the angiographic evolution of 62 patients treated by successful stent implantation who had a total of 85 side b ranches starting from the stented segment. Side branches were consider ed minor (n = 39) when the diameter was <1 mm and intermediate (n = 46 ) when the vessel had greater than or equal to 1 mm diameter. One angi ographic follow-up study was available in all patients at 8 +/- 5 mont hs. Eight minor branches presented some degree of stenosis at origin b efore stent deployment (4 totally occluded). After stent deployment, 3 2 (82%) of 39 remained unchanged and 3 became occluded. Late progressi on at origin occurred in 4 of 34 (3 occluded). Before stent deployment , 48% of the intermediate branches had some compromise degree at their starting point (1 totally occluded). Eight of 45 intermediate branche s became occluded after stent implantation. Late progression at origin happened in 5 of 32 branches (2 occluded). Some degree of follow-up s tenosis regression at the origin was observed in 22 (26%) of 85 arteri es. Neither clinical nor angiographic factors could be identified as p redictors of late side branch occlusion or stenosis progression at its origin. Later occlusion or progression at origin of a side branch cov ered by a Palmaz-Schatz stent seems to be an uncommon occurrence (7% a nd 12% respectively) that cannot be predicted by angiographic or clini cal factors. On the contrary, regression at follow-up of a side branch -origin stenosis can also come about.