926 results found
Ozaki Y, Katagiri Y, Onuma Y, et al., 2018, CVIT expert consensus document on primary percutaneous coronary intervention (PCI) for acute myocardial infarction (AMI) in 2018, Cardiovascular Intervention and Therapeutics, Vol: 33, Pages: 178-203, ISSN: 1868-4300
While primary percutaneous coronary intervention (PCI) has significantly contributed to improve the mortality in patientswith ST segment elevation myocardial infarction even in cardiogenic shock, primary PCI is a standard of care in most ofJapanese institutions. Whereas there are high numbers of available facilities providing primary PCI in Japan, there are noclear guidelines focusing on procedural aspect of the standardized care. Whilst updated guidelines for the managementof acute myocardial infarction were recently published by European Society of Cardiology, the following major changesare indicated; (1) radial access and drug-eluting stent over bare metal stent were recommended as Class I indication, and(2) complete revascularization before hospital discharge (either immediate or staged) is now considered as Class IIa recommendation.Although the primary PCI is consistently recommended in recent and previous guidelines, the device lagfrom Europe, the frequent usage of coronary imaging modalities in Japan, and the difference in available medical therapyor mechanical support may prevent direct application of European guidelines to Japanese population. The Task Force onPrimary Percutaneous Coronary Intervention of the Japanese Association of Cardiovascular Intervention and Therapeutics(CVIT) has now proposed the expert consensus document for the management of acute myocardial infarction focusing onprocedural aspect of primary PCI.
Chiastra C, Iannaccone F, Grundeken MJ, et al., 2016, Coronary fractional flow reserve measurements of a stenosed side branch: a computational study investigating the influence of the bifurcation angle, Biomedical Engineering Online, Vol: 15, ISSN: 1475-925X
BackgroundCoronary hemodynamics and physiology specific for bifurcation lesions was not well understood. To investigate the influence of the bifurcation angle on the intracoronary hemodynamics of side branch (SB) lesions computational fluid dynamics simulations were performed.MethodsA parametric model representing a left anterior descending—first diagonal coronary bifurcation lesion was created according to the literature. Diameters obeyed fractal branching laws. Proximal and distal main branch (DMB) stenoses were both set at 60 %. We varied the distal bifurcation angles (40°, 55°, and 70°), the flow splits to the DMB and SB (55 %:45 %, 65 %:35 %, and 75 %:25 %), and the SB stenoses (40, 60, and 80 %), resulting in 27 simulations. Fractional flow reserve, defined as the ratio between the mean distal stenosis and mean aortic pressure during maximal hyperemia, was calculated for the DMB and SB (FFRSB) for all simulations.ResultsThe largest differences in FFRSB comparing the largest and smallest bifurcation angles were 0.02 (in cases with 40 % SB stenosis, irrespective of the assumed flow split) and 0.05 (in cases with 60 % SB stenosis, flow split 55 %:45 %). When the SB stenosis was 80 %, the difference in FFRSB between the largest and smallest bifurcation angle was 0.33 (flow split 55 %:45 %). By describing the ΔPSB−QSB relationship using a quadratic curve for cases with 80 % SB stenosis, we found that the curve was steeper (i.e. higher flow resistance) when bifurcation angle increases (ΔP = 0.451*Q + 0.010*Q 2 and ΔP = 0.687*Q + 0.017*Q 2 for 40° and 70° bifurcation angle, respectively). Our analyses revealed complex hemodynamics in all cases with evident counter-rotating helical flow structures. Larger bifurcation angles resulted in more pronounced helical flow structures (i.e. higher helicity intensity), when 60 or 80 % SB stenoses were present. A good correlation (R2 = 0.80) between the SB pressure drop and helici
Oemrawsingh RM, Cheng JM, Akkerhuis KM, et al., 2016, High-sensitivity C-reactive protein predicts 10-year cardiovascular outcome after percutaneous coronary intervention, Eurointervention, Vol: 12, Pages: 345-351, ISSN: 1969-6213
AIMS: This study aimed to evaluate the prognostic value of high-sensitivity C-reactive protein (hsCRP) during 10-year follow-up after percutaneous coronary intervention (PCI). METHODS AND RESULTS: Between April and October 2002, hsCRP was measured in 468 all-comer patients who underwent PCI with sirolimus-eluting stent implantation for stable coronary artery disease or acute coronary syndrome. The primary endpoint was the composite of all-cause mortality or myocardial infarction at 10-year follow-up. Kaplan-Meier event curves displayed ongoing divergence of the hsCRP groups (hsCRP <1 mg/L: 14.7% vs. 1-3 mg/L: 31.1% vs. >3 mg/L: 43.1%). After adjustment for established cardiovascular risk factors and clinical presentation in a Cox regression model, higher CRP levels were associated with a higher incidence of the composite endpoint (>3 mg/L vs. <1 mg/L: HR 2.87, 95% CI: 1.69-4.87, p<0.001; 1-3 mg/L vs. <1 mg/L: HR 2.30, 95% CI: 1.31-4.03, p=0.004). Although adding hsCRP to a prediction model containing conventional cardiovascular risk factors did not significantly improve discriminatory power (area under the receiver operating characteristic curve 0.71 to 0.73, p=0.56), hsCRP was able to improve risk classification (net reclassification index=0.40, p=<0.001). CONCLUSIONS: In patients undergoing PCI, higher CRP levels at the time of the procedure are predictive for 10-year mortality and myocardial infarction. High-sensitivity CRP may be a useful biomarker to improve further risk assessment in patients undergoing PCI.
Sotomi Y, Tateishi H, Suwannasom P, et al., 2016, Quantitative assessment of the stent/scaffold strut embedment analysis by optical coherence tomography, International Journal of Cardiovascular Imaging, Vol: 32, Pages: 871-883, ISSN: 1875-8312
The degree of stent/scaffold embedment could be a surrogate parameter of the vessel wall-stent/scaffold interaction and could have biological implications in the vascular response. We have developed a new specific software for the quantitative evaluation of embedment of struts by optical coherence tomography (OCT). In the present study, we described the algorithm of the embedment analysis and its reproducibility. The degree of embedment was evaluated as the ratio of the embedded part versus the whole strut height and subdivided into quartiles. The agreement and the inter- and intra-observer reproducibility were evaluated using the kappa and the interclass correlation coefficient (ICC). A total of 4 pullbacks of OCT images in 4 randomly selected coronary lesions with 3.0 × 18 mm devices [2 lesions with Absorb BVS and 2 lesions with XIENCE (both from Abbott Vascular, Santa Clara, CA, USA)] from Absorb Japan trial were evaluated by two investigators with QCU-CMS software version 4.69 (Leiden University Medical Center, Leiden, The Netherlands). Finally, 1481 polymeric struts in 174 cross-sections and 1415 metallic struts in 161 cross-sections were analyzed. Inter- and intra-observer reproducibility of quantitative measurements of embedment ratio and categorical assessment of embedment in Absorb BVS and XIENCE had excellent agreement with ICC ranging from 0.958 to 0.999 and kappa ranging from 0.850 to 0.980. The newly developed embedment software showed excellent reproducibility. Computer-assisted embedment analysis could be a feasible tool to assess the strut penetration into the vessel wall that could be a surrogate of acute injury caused by implantation of devices.
Tenekecioglu E, Farooq V, Bourantas CV, et al., 2016, Bioresorbable scaffolds: a new paradigm in percutaneous coronary intervention, BMC Cardiovascular Disorders, Vol: 16, ISSN: 1471-2261
Simsek C, Karanasos A, Magro M, et al., 2016, Long-term invasive follow-up of the everolimus-eluting bioresorbable vascular scaffold: five-year results of multiple invasive imaging modalities, Eurointervention, Vol: 11, Pages: 996-1003, ISSN: 1969-6213
AIMS: Invasive imaging modalities have shown restoration of vasomotion, prevention of restenosis and, most importantly, increase in lumen area between six months and two years after first-generation everolimus-eluting bioresorbable vascular scaffold (Absorb BVS) implantation. Our aim was to assess whether these positive findings were sustained in the long term. METHODS AND RESULTS: Patients included in the ABSORB cohort A from the Thoraxcenter Rotterdam cohort underwent coronary catheterisation including angiography, intravascular ultrasound (IVUS), virtual histology, optical coherence tomography (OCT) and vasomotion testing at five years. Eight out of 16 patients underwent catheterisation and scaffold assessment with multiple imaging modalities. A trend towards an increase in minimum luminal diameter was observed between two and five years by angiography (1.95±0.37 mm vs. 2.14±0.38 mm; p=0.09). IVUS data showed an increase in mean lumen area at five years (6.96±1.13 mm2) compared to six months (6.17±0.74 mm2; p=0.06) and two years (6.56±1.16 mm2; p=0.12), primarily due to a persistent reduction in plaque area size between six months and five years (9.17±1.86 mm2 vs. 7.57±1.63 mm2; p=0.03). The necrotic core area was reduced at five years compared to post-procedural results. In OCT, an increase in mean and minimal luminal area was observed. Moreover, no scaffold struts could be identified and a smooth endoluminal lining was observed. The scaffolded coronary segment did not show signs of endothelial dysfunction with acetylcholine testing. CONCLUSIONS: At five years, the Absorb BVS is no longer discernible by any invasive imaging method and endothelial function is restored. Late luminal enlargement persists up to five years of follow-up without adaptive vessel remodelling.
Brener SJ, Maehara A, Mintz GS, et al., 2015, Effect of Prior Aspirin Treatment on Patients With Acute Coronary Syndromes: Insights From the PROSPECT Study, JOURNAL OF INVASIVE CARDIOLOGY, Vol: 27, Pages: 536-541, ISSN: 1042-3931
Campos CM, Stanetic BM, Farooq V, et al., 2015, Risk stratification in 3-vessel coronary artery disease: Applying the SYNTAX Score II in the Heart Team Discussion of the SYNTAX II trial, CATHETERIZATION AND CARDIOVASCULAR INTERVENTIONS, Vol: 86, Pages: E229-E238, ISSN: 1522-1946
Chieffo A, Van Mieghem NM, Tchetche D, et al., 2015, Impact of Mixed Aortic Valve Stenosis on VARC-2 Outcomes and Postprocedural Aortic Regurgitation in Patients Undergoing Transcatheter Aortic Valve Implantation: Results From the International Multicentric Study PRAGMATIC (Pooled Rotterdam-Milan-Toulouse in Collaboration), CATHETERIZATION AND CARDIOVASCULAR INTERVENTIONS, Vol: 86, Pages: 875-885, ISSN: 1522-1946
Bourantas CV, Serruys PW, Nakatani S, et al., 2015, Bioresorbable vascular scaffold treatment induces the formation of neointimal cap that seals the underlying plaque without compromising the luminal dimensions: a concept based on serial optical coherence tomography data, EUROINTERVENTION, Vol: 11, Pages: 746-756, ISSN: 1774-024X
van Klaveren D, Vergouwe Y, Farooq V, et al., 2015, Estimates of absolute treatment benefit for individual patients required careful modeling of statistical interactions, JOURNAL OF CLINICAL EPIDEMIOLOGY, Vol: 68, Pages: 1366-1374, ISSN: 0895-4356
Byrne RA, Serruys PW, Baumbach A, et al., 2015, Report of a European Society of Cardiology-European Association of Percutaneous Cardiovascular Interventions task force on the evaluation of coronary stents in Europe: executive summary, EUROPEAN HEART JOURNAL, Vol: 36, Pages: 2608-2620, ISSN: 0195-668X
Campos CM, Fedewa RJ, Garcia-Garcia HM, et al., 2015, Ex vivo validation of 45 MHz intravascular ultrasound backscatter tissue characterization, EUROPEAN HEART JOURNAL-CARDIOVASCULAR IMAGING, Vol: 16, Pages: 1112-1119, ISSN: 2047-2404
Kelbaek H, Holmvang L, Richardt G, et al., 2015, Clinical results with the Resolute zotarolimus-eluting stent in total coronary occlusions, EUROINTERVENTION, Vol: 11, Pages: 650-657, ISSN: 1774-024X
Genereux P, Campos CM, Yadav M, et al., 2015, Reasonable incomplete revascularisation after percutaneous coronary intervention: the SYNTAX Revascularisation Index, EUROINTERVENTION, Vol: 11, Pages: 634-642, ISSN: 1774-024X
Moeckel M, Muller R, Searle J, et al., 2015, Usefulness of Beta2-Microglobulin as a Predictor of All-Cause and Nonculprit Lesion-Related Cardiovascular Events in Acute Coronary Syndromes (from the PROSPECT Study), AMERICAN JOURNAL OF CARDIOLOGY, Vol: 116, Pages: 1034-1040, ISSN: 0002-9149
Giustino G, Baber U, Stefanini GG, et al., 2015, Impact of Clinical Presentation (Stable Angina Pectoris vs Unstable Angina Pectoris or Non-ST-Elevation Myocardial Infarction vs ST-Elevation Myocardial Infarction) on Long-Term Outcomes in Women Undergoing Percutaneous Coronary Intervention With Drug-Eluting Stents, AMERICAN JOURNAL OF CARDIOLOGY, Vol: 116, Pages: 845-852, ISSN: 0002-9149
Onuma Y, Kimura T, Raeber L, et al., 2015, Differences in coronary risk factors, procedural characteristics, mortality and stent thrombosis between two all-comers percutaneous coronary intervention registries from Europe and Japan: a patient-level data analysis of the Bern-Rotterdam and j-Cypher registries, EUROINTERVENTION, Vol: 11, Pages: 533-540, ISSN: 1774-024X
Muramatsu T, Grundeken MJ, Ishibashi Y, et al., 2015, Comparison between two- and three-dimensional quantitative coronary angiography bifurcation analyses for the assessment of bifurcation lesions: A subanalysis of the TRYTON pivotal IDE coronary bifurcation trial, CATHETERIZATION AND CARDIOVASCULAR INTERVENTIONS, Vol: 86, Pages: E140-E149, ISSN: 1522-1946
Chevalier B, Wijns W, Silber S, et al., 2015, Five-year clinical outcome of the Nobori drug-eluting coronary stent system in the treatment of patients with coronary ariery disease: final results of the NOBORI 1 trial, EUROINTERVENTION, Vol: 11, Pages: 549-554, ISSN: 1774-024X
Parasca CA, Head SJ, Mohr FW, et al., 2015, The impact of a second arterial graft on 5-year outcomes after coronary artery bypass grafting in the Synergy Between Percutaneous Coronary Intervention With TAXUS and Cardiac Surgery Trial and Registry, JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY, Vol: 150, Pages: 597-+, ISSN: 0022-5223
Michail M, Torii R, Crake T, et al., 2015, Local Hemodynamics An Innocent Bystander or a Critical Factor Regulating Neoatherosclerotic Evolution?, JACC-CARDIOVASCULAR INTERVENTIONS, Vol: 8, Pages: E149-E150, ISSN: 1936-8798
Albuquerque FN, Bortnick A, Iqbal J, et al., 2015, Dual antiplatelet therapy, drug-eluting stents and bioresorbable vascular scaffolds: Evolutionary perspectives, Catheterization and Cardiovascular Interventions, Vol: 87, Pages: 909-919, ISSN: 1522-726X
Dual antiplatelet therapy reduces the risk of myocardial infarction, stent thrombosis, and cardiovascular mortality after percutaneous coronary intervention, but the optimal duration of therapy remains unclear. Stent thrombosis, one of the most feared complications of coronary intervention, is associated with high mortality and morbidity and is related in part to technical and patient-specific factors. Advances in device technology and better understanding of the pathophysiology of stent thrombosis have reduced the frequency of this devastating complication. Bioresorbable vascular scaffolds possess a number of advantageous features and are currently undergoing active investigation. Bioresorbable vascular scaffolds have been demonstrated to restore physiologic vasomotion, allow for late lumen enlargement, and upon full resorption remove the nidus for very late polymer reactions and resolve concerns of stent malapposition and side branch jailing. Based on the results from recent large-scale randomized trials, the optimal duration of dual antiplatelet therapy may depend on the choice of device type, as well as the individual patient risk of ischemic versus hemorrhagic complications.
Grundeken MJ, Kraak RP, De Winter RJ, et al., 2015, How to define bifurcation lesion complexity and how to successfully perform percutaneous treatment, MINERVA CARDIOANGIOLOGICA, Vol: 63, Pages: 253-274, ISSN: 0026-4725
Stanetic BM, Iqbal J, Onuma Y, et al., 2015, Novel bioresorbable scaffolds technologies: Current status and future directions, MINERVA CARDIOANGIOLOGICA, Vol: 63, Pages: 297-315, ISSN: 0026-4725
Schultz CJ, Lauritsch G, Van Mieghem N, et al., 2015, Rotational angiography with motion compensation: first-in-man use for the 30 evaluation of transcatheter valve prostheses, EUROINTERVENTION, Vol: 11, Pages: 442-449, ISSN: 1774-024X
Papafaklis MI, Bourantas CV, Yonetsu T, et al., 2015, Anatomically correct three-dimensional coronary artery reconstruction using frequency domain optical coherence tomographic and angiographic data: head-to-head comparison with intravascular ultrasound for endothelial shear stress assessment in humans, EUROINTERVENTION, Vol: 11, Pages: 407-415, ISSN: 1774-024X
Karanasos A, Schuurbiers JCH, Garcia-Garcia H, et al., 2015, Association of wall shear stress with long-term vascular healing response following bioresorbable vascular scaffold implantation, INTERNATIONAL JOURNAL OF CARDIOLOGY, Vol: 191, Pages: 279-283, ISSN: 0167-5273
Genereux P, Campos CM, Farooq V, et al., 2015, Validation of the SYNTAX Revascularization Index to Quantify Reasonable Level of Incomplete Revascularization After Percutaneous Coronary Intervention, AMERICAN JOURNAL OF CARDIOLOGY, Vol: 116, Pages: 174-186, ISSN: 0002-9149
Serruys PW, 2015, A call for a new codified approach for experimentation in humans, EUROINTERVENTION, Vol: 11, Pages: 249-249, ISSN: 1774-024X
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