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Intravascular stent

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https://www.readbyqxmd.com/read/28606023/over-expansion-of-drug-eluting-stents-in-patients-with-left-main-coronary-artery-disease-an-in%C3%A2-vivo-study
#1
Yicong Ye, Hao Qian, Ming Yang, Xueqing Zhu, Tianpeng Gan, Shuyang Zhang, Yong Zeng
Objective We aimed to determine the capacity of drug-eluting stent (DES) over-expansion in left main coronary artery disease. Methods Left main interventions with the largest available DES platforms (4.0 mm) and post-dilation performed with large non-compliant balloons (≥ 4.5 mm) were included. Maximal stent diameter (mm) and area (mm(2)) were measured using post-intervention intravascular ultrasound (IVUS). Stent diameter and area were calculated with the balloon diameter and inflation pressure. The diameter and area expansion indices were defined as follows: maximal/calculated stent diameter and maximal/calculated stent area, respectively...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28602923/successful-hybrid-neurovascular-surgery-for-a-ruptured-basilar-artery-dissecting-aneurysm-in-a-patient-with-jeopardized-collateral-circulation-associated-with-aortitis-syndrome-case-report
#2
Kazuaki Yamamoto, Takahisa Mori, Tsuyoshi Watanabe, Tomonori Iwata, Gakuji Gondo, Masahiko Tanaka, Satoshi Tanaka
BACKGROUND: Dissecting aneurysms of the basilar artery (BA) are rare lesions and the management of them has been controversial and challenging. The treatment becomes much more difficult when the patient has a disorder such as aortitis syndrome, which makes cerebral arteries occluded and tortuous. The authors describe a case of a ruptured BA dissecting aneurysm associated with aortitis syndrome, successfully treated with hybrid neurovascular surgery. CASE DESCRIPTION: A 64-year-old woman with a medical history of aortitis syndrome developed a severe headache and was diagnosed with a subarachnoid hemorrhage from a BA dissecting aneurysm...
June 8, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28600019/safety-and-efficacy-outcomes-of-second-generation-everolimus-eluting-stents-in-octogenarians-compared-to-non-octogenarians
#3
Hironori Kitabata, Takashi Kubo, Kazuya Mori, Yasunori Yamamoto, Manabu Kashiwagi, Yu Arita, Takashi Tanimoto, Takashi Akasaka
BACKGROUND: In patients ≥80 years of age, the use of second-generation cobalt-chromium everolimus-eluting stents (CoCr-EES) versus bare-metal stents has been shown to reduce myocardial infarction (MI) and target vessel revascularization (TVR) rates, without an increase in bleeding. However, safety and efficacy of CoCr-EES in octogenarians compared to younger populations are less certain. We aimed to compare the clinical outcomes between octogenarian and non-octogenarian patients undergoing percutaneous coronary intervention (PCI) with CoCr-EES...
June 1, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28592484/analysis-of-neointima-development-in-flow-diverters-using-optical-coherence-tomography-imaging
#4
Yoshikazu Matsuda, Joonho Chung, Demetrius K Lopes
BACKGROUND: Flow diverters are used for the treatment of intracranial aneurysms. Surface modification may decrease the thrombogenicity of flow diverters but the details are unknown. Optical coherence tomography (OCT) is an intravascular imaging test with high resolution which identifies neointimal growth over stents. We compared the development of neointima in a flow diverter and stents with and without surface modification in a swine model. METHODS: In this study we implanted four devices (two in each carotid artery) in four pigs...
June 7, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28581348/safety-and-efficacy-of-the-tryton-side-branch-stent%C3%A2-for-the-treatment-of-coronary-bifurcation-lesions-an-update
#5
Maik J Grundeken, Robbert J de Winter, Joanna J Wykrzykowska
Percutaneous coronary interventions (PCIs) involving coronary bifurcation lesions are associated with adverse outcomes compared with non-bifurcation lesions. The Tryton Side Branch Stent has been developed to improve clinical outcomes after bifurcation PCI. Areas covered: We will discuss observational data (clinical registries and intravascular imaging studies) and randomized data from the TRYTON trial (comparing Tryton [used in combination with a main branch drug-eluting stent (DES)] with side branch balloon angioplasty [in combination with a main branch DES; also referred to the provisional strategy])...
June 13, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28581259/clinical-implication-of-optical-coherence-tomography-based-neoatherosclerosis
#6
REVIEW
Sung Jin Hong, Seung Yul Lee, Myeong Ki Hong
Recent research has indicated neoatherosclerosis (NA), the de novo development of atherosclerosis within the neointimal region of the stented segment after coronary stent implantation, as a mechanism of late/very late stent thrombosis (VLST) and restenosis. This research is based on histologic and intravascular imaging studies. Optical coherence tomography (OCT) is an imaging tool that is superior with regard to resolution capacity, and can be used to visualize detailed information about distinct morphological characteristics of the restenotic tissue...
July 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28574042/-first-experience-with-intravascular-ultrasonographic-examination-in-diagnosis-of-post-traumatic-obstruction-of-deep-veins
#7
E V Shaĭdakov, O Ia Porembskaia, A G Grigorian, V L Bulatov, D A Rosukhovskiĭ
Intravascular ultrasonography (IVUS) is a highly effective method of diagnosis of post-thrombotic obstructions. Its possibilities by determining the degree and extension of obstructions of deep veins are superior to those of not only non-invasive methods of examination (ultrasonography, CT and MRI) but of phlebography whose results until recently were considered fundamental in diagnosis of the disease concerned. Limited possibilities of phlebography often lead to diagnostic errors when determining the degree and extension of post-thrombotic obstructions...
2017: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/28566599/simultaneous-idiopathic-dissections-of-the-coronary-and-superior-mesenteric-arteries
#8
Masato Nishi, Daisuke Sueta, Takashi Miyazaki, Kenji Sakamoto, Eiichiro Yamamoto, Yasuhiro Izumiya, Kenichi Tsujita, Sunao Kojima, Koichi Kaikita, Osamu Ikeda, Yasuyuki Yamashita, Seiji Hokimoto
A 49-year-old man complained of sudden upper abdominal pain but was not given a definitive diagnosis. The day after he was discharged, he noticed left chest pain. An in-depth electrocardiogram indicated acute myocardial infarction, and emergent coronary angiography revealed 99% stenosis of his left coronary artery. An intravascular ultrasound revealed spontaneous coronary artery dissection (SCAD), and the lesion was successfully stented. In an atherosclerosis screening, superior mesenteric artery dissection (SMAD) was confirmed, after which the lesion was successfully stented...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28555389/plaque-characteristics-and-inflammatory-markers-for-the-prediction-of-major-cardiovascular-events-in-patients-with-st-segment-elevation-myocardial-infarction
#9
Ae-Young Her, Kyoung Im Cho, Gillian Balbir Singh, Dae Seong An, Young-Hoon Jeong, Bon-Kwon Koo, Eun-Seok Shin
To investigate the clinical utility of culprit plaque characteristics and inflammatory markers for the prediction of future cardiovascular events in patients with ST-segment elevation myocardial infarction (STEMI) with successful drug-eluting stent (DES) implantation. We evaluated 172 STEMI patients with successful primary percutaneous coronary intervention (PCI) with DES using pre-PCI high-sensitivity C-reactive protein (hs-CRP), neutrophil-to-lymphocyte ratio (NLR) and pre-PCI intravascular ultrasound virtual histology (IVUS-VH) of culprit lesions...
May 29, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28539596/intravascular-ultrasound-guidance-improves-the-long-term-prognosis-in-patients-with-unprotected-left-main-coronary-artery-disease-undergoing-percutaneous-coronary-intervention
#10
Jian Tian, Changdong Guan, Wenyao Wang, Kuo Zhang, Jue Chen, Yongjian Wu, Hongbing Yan, Yanyan Zhao, Shubin Qiao, Yuejin Yang, Gary S Mintz, Bo Xu, Yida Tang
This study compared the long term outcomes in patients with unprotected left main coronary artery (LMCA) disease who underwent stenting under the guidance of intravascular ultrasound (IVUS) or conventional angiography at a large single center. The primary outcome was the composite of all-cause death and myocardial infarction (MI) at 3 years. Target vessel revascularization (TVR) at 3 years was one of the secondary outcomes. Between January 2004 and December 2011, a total of 1,899 patients who underwent IVUS-guided (n = 713, 37...
May 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28538372/detection-of-very-delayed-coronary-stent-fracture-using-a-novel-fluoroscopic-stent-visualization-technique-against-intravascular-ultrasound-a-case-series
#11
Feifei Yang, Liwei Zhang, Dangsheng Huang, Dong Shen, Yongjiang Ma, Minjun Xiong, Chunhong Zhang, Miao Tian
RATIONALE: Stent fracture has received increased concern as it may be an important risk factor for late stent failure, intravascular ultrasound (IVUS) is always recommended to confirm the diagnosis of stent fracture. StentBoost can detect stent fractures more easily due to the enhanced stent strut visibility, compared with coronary angiography (CAG). Few cases were reported to compare the advantages of StentBoost vis-à-vis IVUS in detecting stent fracture. PATIENT CONCERNS: We reported 3 cases that were confirmed the diagnosis of stent fracture by StentBoost, which were preliminarily suspected by angiography, including one case that lacked the IVUS evidence of stent fracture...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28532066/design-and-characterization-of-a-novel-nickel-free-cobalt-base-alloy-for-intravascular-stents
#12
Qiang Wang, Yibin Ren, M Babar Shahzad, Wei Zhang, Xumeng Pan, Song Zhang, Dan Zhang
Co-Cr-W-Ni alloy (L605) with high tensile strength is used in coronary stents. The thickness of individual strut of the stent is reduced which can decrease the stent restenosis rate. However, about 10% Ni element content in L605 is found to cause allergic reactions and pulmonary embolism, similar to the traditional 316L stainless steel. In this study, a novel nickel-free cobalt-base alloy Co-20Cr-12Fe-18Mn-2Mo-4W-N (wt%) was designed and fabricated in order to efficiently avoid the potential hazards of Ni element...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28521919/intravascular-ultrasound-analysis-of-intraplaque-versus-subintimal-tracking-in-percutaneous-intervention-for-coronary-chronic-total-occlusions-and-association-with-procedural-outcomes
#13
Lei Song, Akiko Maehara, Matthew T Finn, Sanjog Kalra, Jeffrey W Moses, Manish A Parikh, Ajay J Kirtane, Michael B Collins, Tamim M Nazif, Khady N Fall, Raja Hatem, Ming Liao, Tiffany Kim, Philip Green, Ziad A Ali, Candido Batres, Martin B Leon, Gary S Mintz, Dimitri Karmpaliotis
OBJECTIVES: Using intravascular ultrasound (IVUS), the authors compared outcomes by observed wire position (intraplaque vs. subintimal) achieved during successful chronic total occlusion (CTO) lesion treatment. BACKGROUND: Recent successes in CTO percutaneous coronary intervention (PCI) have used both intraluminal and subintimal wire tracking to improve procedural success. IVUS may be used to determine the course of wire tracking after crossing a CTO. METHODS: From March 2014 to March 2016, data were collected into a single-center database from 219 patients undergoing CTO PCI with concomitant IVUS imaging...
May 22, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28514894/successful-repair-of-acute-type-b-and-retrograde-type-a-aortic-dissection-with-kidney-ischemia
#14
Jeko M Madjarov, Michael G Katz, Hector Crespo-Soto, Svetozar Madzharov, Timothy Roush, Francis Robicsek
Acute dissection of thoracic aorta carries a risk of renal ischemia followed by the development of a kidney failure. The optimal surgical and nonsurgical management of these patients, timing of intervention, and the factors predicting renal recovery are not well delineated and remain controversial. We present a case of acute type B thoracic aortic dissection with left kidney ischemia. Evaluation of renal function was performed by the means of internationally accepted Risk, Injury, Failure, Loss of kidney function, End stage kidney disease and Acute Kidney Injury Network classifications for acute kidney injury, renal duplex sonography, and intravascular ultrasound that demonstrated left renal artery dissection with a flap completely compressing the true lumen...
January 1, 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28500737/clinical-outcomes-of-overlapping-versus-non-overlapping-everolimus-eluting-absorb-bioresorbable-vascular-scaffolds-an-analysis-from-the-multicentre-prospective-rai-registry-clinicaltrials-gov-identifier-nct02298413
#15
Giuseppe Tarantini, Marco Mojoli, Giulia Masiero, Bernardo Cortese, Bruno Loi, Attilio Varricchio, Gabriele Gabrielli, Alessandro Durante, Giampaolo Pasquetto, Paolo Calabrò, Roberto Gistri, Gabriele Tumminello, Leonardo Misuraca, Francesco Pisano, Alfonso Ielasi, Pietro Mazzarotto, Sebastian Coscarelli, Valerio Lucci, Luciano Moretti, Annamaria Nicolino, Alessandro Colombo, Zoran Olivari, Massimo Fineschi, Davide Piraino, Luigi Piatti, Umberto Canosi, Paola Tellaroli, Donatella Corrado, Chiara Rovera, Giuseppe Steffenino
OBJECTIVES: To compare clinical outcomes of patients treated with overlapping versus non-overlapping Absorb BVS. BACKGROUND: Limited data are available on the clinical impact of stent overlap with the Absorb BVS bioresorbable stent. METHODS: We compared outcomes of patients receiving overlapping or non-overlapping Absorb BVS in the multicenter prospective RAI Registry. RESULTS: Out of 1,505 consecutive patients treated with Absorb BVS, 1,384 were eligible for this analysis...
May 13, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28496557/in-stent-restenosis-due-to-stent-recoil-after-third-generation-drug-eluting-stent-implantation
#16
Yuta Kato, Atsushi Iwata, Masayuki Nakamura, Shin-Ichiro Miura, Keijiro Saku
A 72-year-old man with a heavily calcified coronary lesion underwent percutaneous coronary intervention (PCI) using a third-generation drug-eluting stent (DES) with thin stent struts. Two months after the PCI, in-stent restenosis due to stent recoil (SR) occurred. An intravascular ultrasound (IVUS) revealed deformed stent struts and heavily calcified coronary plaque. The SR probably occurred due to persistent vessel compression as a result of heavily calcified coronary plaque. We should consider using a DES with thick stent struts rather than a third-generation DES with thin stent struts in patients with a heavily calcified coronary lesion...
June 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28493084/combined-intracoronary-2d-3d-optical-coherence-tomography-and-intravascular-ultrasound-imaging-in-left-main-severe-stent-malapposition
#17
Enrico Cerrato, Corina Biagioni, Pilar Jimenez-Quevedo, Ivan J Nuñez-Gil, Nieves Gonzalo, Javier Escaned
No abstract text is available yet for this article.
May 10, 2017: Cardiovascular Intervention and Therapeutics
https://www.readbyqxmd.com/read/28487356/intravascular-ultrasound-guidance-is-associated-with-better-outcome-in-patients-undergoing-unprotected-left-main-coronary-artery-stenting-compared-with-angiography-guidance-alone
#18
Pontus Andell, Sofia Karlsson, Moman A Mohammad, Matthias Götberg, Stefan James, Jens Jensen, Ole Fröbert, Oskar Angerås, Johan Nilsson, Elmir Omerovic, Bo Lagerqvist, Jonas Persson, Sasha Koul, David Erlinge
BACKGROUND: Small observational studies have indicated better outcome with intravascular ultrasound (IVUS) guidance when performing unprotected left main coronary artery (LMCA) percutaneous coronary intervention (PCI), but the overall picture remains inconclusive and warrants further investigation. We studied the impact of IVUS guidance on outcome in patients undergoing unprotected LMCA PCI in a Swedish nationwide observational study. METHODS AND RESULTS: Patients who underwent unprotected LMCA PCI between 2005 and 2014 because of stable coronary artery disease or acute coronary syndrome were included from the nationwide SCAAR (Swedish Coronary Angiography and Angioplasty Registry)...
May 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28479270/reconstruction-of-an-accidentally-crushed-stent-guided-by-intravascular-ultrasound-during-a-left-main-percutaneous-coronary-intervention
#19
Mohsen Mohandes, Mauricio Torres, Sergio Rojas, Francisco Fernández, Jordi Guarinos, Cristina Moreno
We present a case of an accidentally crushed stent due to an unnoticed passage of a guidewire through a lateral stent strut with subsequent stent compression after balloon dilatation, during a planned percutaneous coronary intervention on the left main. The crushed stent segment was reconstructed with step-by-step balloon dilation, guided by intravascular ultrasound.
May 4, 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/28466410/the-distribution-of-calcified-nodule-and-plaque-rupture-in-patients-with-peripheral-artery-disease-an-intravascular-ultrasound-analysis
#20
Tetsuo Horimatsu, Kenichi Fujii, Masashi Fukunaga, Kojiro Miki, Machiko Nishimura, Yoshiro Naito, Masahiko Shibuya, Takahiro Imanaka, Kenji Kawai, Hiroto Tamaru, Akinori Sumiyoshi, Ten Saita, Tohru Masuyama, Masaharu Ishihara
In addition to plaque rupture (PR), calcified nodule (CN) may also have the potential to develop into arterial thrombus in the peripheral arteries. This study evaluated the distribution of plaque ruptures and calcified nodules in the peripheral arteries and their impact on the outcome of endovascular therapy (EVT). Consecutive 159 patients who underwent EVT with intravascular ultrasound guidance were enrolled. The position of CNs and PRs were assigned to any of common iliac artery, external iliac artery, common femoral artery, and superficial femoral artery...
May 2, 2017: Heart and Vessels
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