Publications by authors named "Juan M Nogales-Asensio"

Background: Severe aortic stenosis (AS) coexists with coronary artery disease (CAD) in approximately 50% of patients. The preferred treatment is combined surgical aortic valve replacement (SAVR) and coronary artery bypass grafting (CABG). However, transcatheter aortic valve replacement (TAVR) along with percutaneous coronary intervention (PCI) has emerged as a viable alternative.

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We examined the effect of minimal lumen segmentation uncertainty on Fractional Flow Reserve obtained from Coronary Computed Tomography Angiography . A total of 14 patient-specific coronary models with different stenosis locations and degrees of severity were enrolled in this study. The optimal segmented coronary lumens were disturbed using intra and inter-operator variations on the segmentation threshold.

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Background: Both balloon-expandable (BE) and self-expandable (SE) valves for transcatheter aortic valve implantation (TAVI) are broadly used in clinical practice. However, adequately powered randomized controlled trials comparing these two valve designs are lacking.

Methods: The CENTER-study included 12,381 patients undergoing transfemoral TAVI.

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An 85-year-old patient with permanent atrial fibrillation with a DDD pacemaker, and with indication for left atrial appendage occlusion (LAAO). Sent for LAAO due to recurrent gastrointestinal bleedings even on apixaban and with a CHA 2 DS 2 VASc and HAS-BLED scores of 4 and 3 respectively.

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Introduction And Objective: Major bleeding events in patients undergoing left atrial appendage closure (LAAC) range from 2.2 to 10.3 per 100 patient-years in different series.

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Introduction: Infective endocarditis (IE) after transcatheter aortic valve implantation (TAVI) is an emerging complication. There are incomplete and disparate data on its incidence. We present the experience of a single-centre of incidence, mortality and associated factors of IE after TAVI.

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Introduction And Objectives: Many patients with nonvalvular atrial fibrillation are still left without protection due to a contraindication for anticoagulants. This study aimed to establish the occurrence of stroke and major bleeding events in patients with nonvalvular atrial fibrillation and left atrial appendage closure with long-term follow-up and to explore the factors associated with higher long-term mortality.

Methods: Analysis of a multicenter single cohort prospectively recruited from 2009 to 2015.

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Objectives: To compare the safety and efficacy of the new cobalt-chromium bioactive stent Titan Optimax (Hexacath, France) with its predecessor, Titan-2 .

Background: The TIOMAX registry includes 784 patients who underwent percutaneous coronary intervention with these stents in 21 Spanish hospitals.

Methods: Analysis of all patients in the registry without exclusion criteria, candidates for revascularization (March-2013/July-2014).

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We present a case of a 52 year old female who suffered from a sudden syncope. A coronariography was performed and spontaneous coronary dissection was diagnosed in the posterior descending artery after an optical coherence tomography (OCT) was performed. A conservative management was decided.

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Transcatheter aortic valve replacement (TAVR) is an increasingly common procedure for the treatment of aortic stenosis in elderly patients with comorbidities that prevent the use of standard surgery. It has been shown that implantation without aortic regurgitation is related to lower mortality. Mild paravalvular regurgitation is inevitable in some cases due to calcification of the aortic annulus and its usually somewhat elliptical shape.

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Background: The adequate device size selection for left atrial appendage closure is crucial to ensuring adequate implantation and for avoiding the need for multiple attempts that increase the risk of complications. Our aim was to evaluate the information obtained using different imaging techniques to select the size of the closure device in a clinical environment.

Methods: Thirty-seven patients who consecutively underwent implantation of Amplatzer cardiac plug (ACP) devices were studied.

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Introduction And Objectives: Up to 25% of patients who undergo a percutaneous coronary intervention show some limitation in the use of drug-eluting stents. The aim of this study was to evaluate if titanium-nitride-oxide-coated stents could be a good alternative to everolimus-eluting stents in diabetic patients.

Methods: A total of 173 diabetic patients with lesions at moderate risk of restenosis (exclusion criteria: diameter < 2.

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Aims: Paclitaxel drug-eluting balloons (pDEB) could be an attractive option to minimise side branch (SB) restenosis in bifurcated coronary lesions. We compared angiographic and clinical outcomes with pDEB plus bare metal stent (BMS) versus drug-eluting stents (DES) in de novo bifurcated lesions.

Methods And Results: This multicentre randomised trial included 108 patients.

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Background And Objective: The Tako-tsubo syndrome (TS) is a reversible acute cardiomyopathy simulating an infarction. We analyzed 60 patients admitted with TS in our center.

Patients And Method: A percentage of 73.

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We present two cases of right coronary artery occlusion in which MGuard® stent implantation failed for different causes, leading to a retrieval procedure adapted to the situation. Complete retrieval was possible in both cases. These cases illustrate the need for careful selection of the lesions that are going to be treated with this type of stent, for which pre-dilatation is recommended in severe lesions located just after an acute vessel angle, the evaluation of proximal angulation and calcification, as well as strategies for complete retrieval in case of implantation failure.

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Background: Certain anatomical characteristics of the left atrial appendage (LAA) are associated with complexity in the implantation of occluder devices.

Objective: The aim was to define characteristics measurable by three-dimensional imaging that would predict complexities both in the implantation procedure and the selection of the appropriate device size.

Methods: An anatomical study was performed of 50 postmortem hearts, of which 15 had a history of atrial fibrillation, and of 30 consecutive patients undergoing LAA occlusion with the Amplatzer cardiac plug (ACP).

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Introduction And Objectives: Left atrial appendage closure can be an attractive option for patients with nonvalvular atrial fibrillation and a contraindication to oral anticoagulants, provided that satisfactory results can be achieved during implantation and follow-up.

Methods: Thirty-five consecutive patients, not eligible for randomized trials with oral anticoagulants, had an Amplatzer occlusion device implanted under general anesthesia. After the first 5 patients, 3-dimensional imaging was incorporated.

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