2006
DOI: 10.1136/hrt.2006.107052
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Stent expansion: a combination of delivery balloon underexpansion and acute stent recoil reduces predicted stent diameter irrespective of reference vessel size

Abstract: Background: There is a strong inverse relationship between final vessel diameter and subsequent risk of treatment failure after coronary stent deployment. The aim of this study was to investigate the magnitude by which stent delivery balloon underexpansion and stent elastic recoil contributed to suboptimal final vessel geometry. Methods: A prospective angiographic study recruiting 499 lesions (385 patients) undergoing coronary stent implantation was performed. Quantitative coronary angiography (QCA) was used t… Show more

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Cited by 43 publications
(44 citation statements)
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“…Interestingly, the 29 mm valve exhibited a higher degree of absolute recoil than the 23 mm prosthesis, but the relative recoil was similar among valve sizes. This is in accordance with coronary stent studies, where the relative recoil was not influenced by the reference vessel and stent diameters 16 . r=0.14 p=0.21 …”
Section: Frequency and Degree Of Recoilsupporting
confidence: 77%
See 1 more Smart Citation
“…Interestingly, the 29 mm valve exhibited a higher degree of absolute recoil than the 23 mm prosthesis, but the relative recoil was similar among valve sizes. This is in accordance with coronary stent studies, where the relative recoil was not influenced by the reference vessel and stent diameters 16 . r=0.14 p=0.21 …”
Section: Frequency and Degree Of Recoilsupporting
confidence: 77%
“…These data could have implications for selecting the Taking this a step further, the present study was the first to assess the dynamic performance of a balloon-expandable valve during the implantation process, showing that some decrease in stent dimensions occurs almost systematically after balloon deflation and contributes to the failure to achieve predicted final stent dimensions. In previous coronary studies, the percentage of stent recoil was about 6% (ranging from 3 to 18%) as measured by quantitative coronary angiography 2,[16][17][18] , which is close to the degree of recoil observed in the present study. Importantly, the degree of acute relative recoil was comparable across the three levels of the valve stent frame, highlighting the fact that the elastic behaviour is homogenous in the entire prosthesis.…”
Section: Frequency and Degree Of Recoilsupporting
confidence: 69%
“…The extension of the disease increases the possibility of sites of incomplete stent expansion, increasing the risk for restenosis and re-intervention. Final minimal lumen diameter and residual stenosis are influenced by many factors that might provoke inadequate stent expansion (21): vessel resistance, stent dimensions, delivery pressure inflations, stent recoil, and use of noncompliant balloons. Small final minimal lumen diameters and high residual stenosis percentage might contribute to restenosis and consequent TLR.…”
Section: Discussionmentioning
confidence: 99%
“…The balloon expansion drives the stent expansion leading to plastic deformation providing a permanently expanded state. Clearly, a certain level of elastic recoil occurs on deflation and removal of the balloon (Aziz et al, 2007).…”
Section: Introductionmentioning
confidence: 99%