Search results for "transcatheter heart valve"

showing 2 items of 2 documents

Anatomical and procedural features associated with aortic root rupture during balloon-expandable transcatheter aortic valve replacement

2013

Background— Aortic root rupture is a major concern with balloon-expandable transcatheter aortic valve replacement (TAVR). We sought to identify predictors of aortic root rupture during balloon-expandable TAVR by using multidetector computed tomography. Methods and Results— Thirty-one consecutive patients who experienced left ventricular outflow tract (LVOT)/annular/aortic contained/noncontained rupture during TAVR were collected from 16 centers. A caliper-matched sample of 31 consecutive patients without annular rupture, who underwent pre-TAVR multidetector computed tomography served as a control group. Multidetector computed tomography assessment included short- and long-axis diameters an…

Malemedicine.medical_specialtyCardiac CatheterizationTranscatheter aorticAortic rootmedicine.medical_treatmentAortic Rupturemultidetector computed tomographySettore MED/11 - Malattie dell'Apparato CardiovascolareCohort StudiesValve replacementPredictive Value of TestsRisk FactorsPhysiology (medical)Internal medicineMultidetector computed tomographymedicine80 and overVentricular outflow tractHumanscardiovascular diseasesannular calcification; annular rupture; multidetector computed tomography; transcatheter heart valves; Aged; Aged 80 and over; Angioplasty Balloon; Aortic Rupture; Aortic Valve; Aortic Valve Stenosis; Calcinosis; Cohort Studies; Female; Heart Valve Prosthesis Implantation; Humans; Logistic Models; Male; Predictive Value of Tests; Risk Factors; Tomography X-Ray Computed; Cardiac CatheterizationTomographyAgedAged 80 and overHeart Valve Prosthesis Implantationbusiness.industrySinotubular JunctionAngioplastyCalcinosisAortic Valve Stenosismedicine.diseaseX-Ray ComputedBalloon expandable stentLogistic Modelstranscatheter heart valvesAortic ValveCardiologycardiovascular systemannular ruptureFemaleRadiologyCardiology and Cardiovascular MedicinebusinessTomography X-Ray ComputedAngioplasty BalloonBalloonCalcificationannular calcification
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3D Printing and Computational Modeling for the Evaluation of LVOT obstruction in Transcatheter Mitral Valve Replacement

2022

Transcatheter mitral valve replacement (TMVR) is an emerging alternative treatment for those patients not qualified for surgery. However, TMVR can determine an obstruction of the left ventricular outflow tract (namely, neo-LVOT) induced by the transcatheter heart valve (THV) displacing the native mitral valve leaflet towards the myocardial wall. This condition can lead to haemodynamic impairment and ultimately patient death. We sought to predict the neo-LVOT obstruction by first developing patient-specific simulations of the THV deployment and then comparing predictions with post-TMVR diagnostic images and 3D printed human models. Using pre-TMVR computed-tomography (CT) imaging, patient-spe…

transcatheter heart valvefinite-element simulation3D priting
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