Continued expansion of the nitinol self-expanding coronary stent: Angiographic analysis and 1-year clinical follow-up

Roguin, Ariel; Grenadier, Ehud; Linn, Shai; Markiewicz, Walter; Beyar, Rafael

doi:10.1016/s0002-8703(99)70120-1

Cited by 48 publications

(29 citation statements)

References 17 publications

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“…Consequently, Wallstents put less pressure on the carotid sinus. 5,11,18,20) Based on our preliminary experience, we conclude that the rate of HD is lower after insertion of closed-cell rather than open-cell stents.…”

mentioning

confidence: 76%

Incidence of Hemodynamic Depression After Carotid Artery Stenting Using Different Self-Expandable Stent Types

Nii

Tsutsumi

Aikawa

et al. 2011

Neurol. Med. Chir.(Tokyo)

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The rates of hemodynamic depression (HD) and thromboembolism were compared in 95 carotid artery stenting (CAS) procedures performed in 87 patients with severe carotid artery stenosis using self-expandable braided Elgiloy stents (Wallstent) in 52 and slotted-tube Nitinol stents (Precise) in 43 procedures. The blood pressure, pulse rate, and neurological signs were recorded at short intervals during and after CAS. All patients underwent diffusion-weighted magnetic resonance imaging within 5 days after the procedure. The incidences of hypotension, bradycardia, and both were 17.9%, 3.2%, and 11.6%, respectively. The rate of postprocedural HD was 23.1% with Wallstent and 44.2% with Precise; the difference was significant (p ＝ 0.025). No patient manifested major cardiovascular disease after CAS. Diffusion-weighted magnetic resonance imaging revealed thromboembolism after 26.9% and 34.9% of Wallstent and Precise stent placement procedures, respectively; the difference was not significant. The type of self-expandable stent placed may affect the risk of procedural HD in patients undergoing CAS. Postprocedural HD was resolved successfully by the administration of vasopressors and by withholding antihypertensive agents.

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mentioning

confidence: 76%

Incidence of Hemodynamic Depression After Carotid Artery Stenting Using Different Self-Expandable Stent Types

Nii

Tsutsumi

Aikawa

et al. 2011

Neurol. Med. Chir.(Tokyo)

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“…Whereas balloon-expandable stents cause immediate vessel injury, self-expanding stents expand gradually for several months after implantation. In spite of the chronic expansion, some studies on self-expanding stents revealed favorable neointimal responses [8, 9]. The Radius stent is a second-generation self-expanding stent, which is made of nitinol and has a multisegmented slotted tube design.…”

Section: Discussionmentioning

confidence: 99%

Self-Expanding Coronary Stent (Radius) Implantation with Cutting Balloon Angioplasty

Lee

Choi

et al. 2005

Cardiology

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To evaluate the effect of cutting balloon (CB) angioplasty on the outcome of self-expanding coronary stent implantation, we compared the results of Radius stent implantation using two predilation strategies. Seventy de novo lesions in 70 patients (60 men) were included in the study. Stenting was performed after conventional angioplasty (n = 38, group 1) or CB angioplasty (n = 32, group 2). In-stent restenosis (ISR) rates of each group were 39 and 10% at 6-month follow-up (p = 0.02). Major adverse cardiac events occurred in 20 and 11%, respectively (p = 0.25). Multivariate analysis revealed that ISR was predicted only by lesion length ≧20 mm. In conclusion, CB angioplasty did not reduce ISR after Radius stent implantation, when other independent risk factors, such as lesion length, were taken into consideration.

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“…[21][22][23] Hong et al 23) inserted a self-expanding nitinol stent into the coronary artery in an animal experiment using pigs, and examined its pathological sections. They confirmed an increase in the stent diameter 6 months after stenting, but the neointimal reaction of the vascular lumen reached a peak 4 to 8 weeks after stenting, and, after 6 months, the stent strut had reached the outer membrane in most pigs.…”

Section: Disclosure Statementmentioning

confidence: 99%

Expansion of Stent and Lumen Diameters on Follow-up after Carotid Artery Stenting in Patients with Carotid Artery Stenosis

Fujimoto

Hashimoto

Nishiguchi

et al. 2017

JNET

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Purpose:We examined postoperative stent and lumen expansions after carotid artery stenting (CAS) in patients with carotid artery stenosis. Furthermore, we investigated factors influencing the stent and lumen expansions in a follow-up period.Subjects: 134 cases (128 patients) who underwent CAS and performed follow-up cerebral angiography 12 months after CAS were enrolled into this study. The stenosis rate based on the stent and lumen diameters on follow-up angiography as a percentage of that immediately after CAS was evaluated.Results: Both the stent and lumen diameters were significantly dilated 12 months after CAS (p <0.001). There were no significant stent-type-related differences in the stent expansion rate. In the symptomatic stenosis group, this expansion rate was significantly higher than in the asymptomatic stenosis group (p = 0.02). With respect to the presence or absence of a high signal intensity on time of flight (TOF) magnetic resonance (MR) images, the stent expansion rate was significantly higher in the high signal intensity group (p = 0.006). In patients with a plaque/sternocleidomastoid muscle signal intensity ratio of ≥1.50 on plaque images, it was significantly higher than in those with a value of <1.50 (p = 0.006).However, there were no significant differences in the lumen expansion rate among the groups. Conclusion:Both the stent and vascular lumen were dilated 12 months after CAS. Plaque fragility influenced the stent expansion rate; however, there were no significant factor-related differences in the vascular lumen expansion rate.

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Continued expansion of the nitinol self-expanding coronary stent: Angiographic analysis and 1-year clinical follow-up

Cited by 48 publications

References 17 publications

Incidence of Hemodynamic Depression After Carotid Artery Stenting Using Different Self-Expandable Stent Types

Incidence of Hemodynamic Depression After Carotid Artery Stenting Using Different Self-Expandable Stent Types

Self-Expanding Coronary Stent (Radius) Implantation with Cutting Balloon Angioplasty

Expansion of Stent and Lumen Diameters on Follow-up after Carotid Artery Stenting in Patients with Carotid Artery Stenosis

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