Search results for "thoracic endovascular aortic repair"

showing 6 items of 6 documents

Biomechanical implications of excessive endograft protrusion into the aortic arch after thoracic endovascular repair

2015

Endografts placed in the aorta for thoracic endovascular aortic repair (TEVAR) may determine malappositioning to the lesser curvature of the aortic wall, thus resulting in a devastating complication known as endograft collapse. This premature device failure commonly occurs in young individuals after TEVAR for traumatic aortic injuries as a result of applications outside the physical conditions for which the endograft was designed. In this study, an experimentally-calibrated fluid-structure interaction (FSI) model was developed to assess the hemodynamic and stress/strain distributions acting on the excessive protrusion extension (PE) of endografts deployed in four young patients underwent TE…

AdultMaleAortic archmedicine.medical_specialtyHemodynamicsAorta ThoracicHealth InformaticsProsthesis DesignBlood Vessel Prosthesis ImplantationYoung AdultAortic aneurysmBlood vessel prosthesismedicine.arteryInternal medicineFluid-structure interactionStentHumansMedicineThoracic aortaStent-graftHemodynamicEndovascular ProcedureAortaAortic Aneurysm Thoracicbusiness.industryEndovascular ProceduresHemodynamicsmedicine.diseaseCurvatures of the stomachBlood Vessel ProsthesisComputer Science ApplicationsSurgeryAlgorithmRadiographyDescending aortaCalibrationCardiologyEndograft collapse/infoldingStentsStress MechanicalThoracic endovascular aortic repair (TEVAR)businessAlgorithmsBird-beakHumanComputers in Biology and Medicine
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Chimney and periscope grafts to facilitate endovascular treatment of aortic transection in a patient with aberrant right subclavian artery

2014

Purpose: To report the use of parallel grafts to extend the proximal landing zone for stentgraft repair of aortic transection involving an aberrant right subclavian artery (ARSA). Case Report: A 28-year-old patient was referred for treatment of traumatic aortic transection with contained rupture at the level of an ARSA. Immediate thoracic endovascular aortic repair (TEVAR) was planned because of hemodynamic instability. To achieve rapid sealing and maintain perfusion to both subclavian arteries, a chimney stent to the left subclavian artery (LSA) and a periscope stent-graft to the ARSA were deployed successfully. After surgical repair of all fractures, the patient was discharged 1 month aft…

Adultmedicine.medical_specialtyTime FactorsAortic RuptureCardiovascular AbnormalitiesSubclavian ArteryHemodynamics610 Medicine & healthProsthesis DesignAortographySettore MED/22 - Chirurgia Vascolare2705 Cardiology and Cardiovascular MedicineBlood Vessel Prosthesis ImplantationBlood vessel prosthesisX ray computedmedicine.arterymedicineHumansThoracic aorta2741 Radiology Nuclear Medicine and ImagingRadiology Nuclear Medicine and imagingcardiovascular diseasesEndovascular treatmentAortabusiness.industryEndovascular ProceduresHemodynamicsAberrant right subclavian arteryVascular System InjuriesAneurysmBlood Vessel ProsthesisSurgery10020 Clinic for Cardiac Surgery2746 SurgeryTreatment Outcomesurgical procedures operativeRegional Blood FlowLanding zonecardiovascular systemStentsSurgeryAneurysm surgeryRadiologyDeglutition DisordersTomography X-Ray ComputedCardiology and Cardiovascular Medicinebusinessthoracic aorta aortic transection trauma thoracic endovascular aortic repair aberrant right subclavian artery left subclavian artery stent-graft parallel graft chimney graft periscope graft landing zone
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An In Vitro Phantom Study on the Role of the Bird-Beak Configuration in Endograft Infolding in the Aortic Arch.

2015

Purpose: To assess endograft infolding for excessive bird-beak configurations in the aortic arch in relation to hemodynamic variables by quantifying device displacement and rotation of oversized stent-grafts deployed in a phantom model. Methods: A patient-specific, compliant, phantom pulsatile flow model was reconstructed from a patient who presented with collapse of a Gore TAG thoracic endoprosthesis. Device infolding was measured under different flow and pressure conditions for 3 protrusion extensions (13, 19, and 24 mm) of the bird-beak configuration resulting from 2 TAG endografts with oversizing of 11% and 45%, respectively. Results: The bird-beak configuration with the greatest protr…

Aortic archModels AnatomicRadiology Nuclear Medicine and ImagingTime FactorsFlow modelPulsatile flowEndograftStent-graft oversizingAorta Thoracic030204 cardiovascular system & hematologyRotation0302 clinical medicineForeign-Body MigrationStentThoracic aortaBird-beak configurationmedicine.diagnostic_testEndovascular ProceduresGraft Occlusion VascularModels CardiovascularAnatomyIn vitro experimentProsthesis FailureBlood Vessel ProsthesiTreatment OutcomePulsatile FlowPatient-specific modelStentsCardiology and Cardiovascular MedicineHumanAortographyTime FactorThoracic endovascular aortic repairProsthesis DesignAortographyImaging phantom03 medical and health sciencesBlood Vessel Prosthesis ImplantationBlood vessel prosthesismedicine.arterymedicineHumansDisplacement (orthopedic surgery)HemodynamicEndovascular Procedurebusiness.industryHemodynamicsDisplacementStent-graft infoldingBlood Vessel ProsthesisSurgerybusinessTomography X-Ray Computed030217 neurology & neurosurgeryStent-graft collapseJournal of endovascular therapy : an official journal of the International Society of Endovascular Specialists
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Should intentional endovascular stent-graft coverage of the left subclavian artery be preceded by prophylactic revascularisation?

2011

Thoracic endovascular aortic repair (TEVAR) has emerged as a promising therapeutic alternative to conventional open aortic replacement but it requires suitable proximal and distal landing zones for stent-graft anchoring. Many aortic pathologies affect in the immediate proximity of the left subclavian artery (LSA) limiting the proximal landing zone site without proximal vessel coverage. In patients in whom the distance between the LSA and aortic lesion is too short, extension of the landing zone can be obtained by covering the LSA's origin with the endovascular stent graft (ESG). This manoeuvre has the potential for immediate and delayed neurological and vascular symptoms. Some authors, ther…

Pulmonary and Respiratory Medicinemedicine.medical_specialtymedicine.medical_treatmentSubclavian ArteryThoracic endovascular aortic repairRevascularizationBlood Vessel Prosthesis ImplantationAortic aneurysmAneurysmmedicine.arterymedicineHumansThoracic aortaleft subclavian arteryAortic Aneurysm Thoracicbusiness.industryEndovascular ProceduresStentGeneral Medicinemedicine.diseaseSurgeryAortic DissectionOstiumBypass surgeryCardiothoracic surgerycardiovascular systemStentsSurgeryCardiology and Cardiovascular Medicinebusiness
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Periscope endograft technique to revascularize the left subclavian artery during thoracic endovascular aortic repair.

2013

Purpose: To present early and midterm results of the periscope endograft (PG) technique to maintain left subclavian artery (LSA) blood flow in thoracic endovascular aortic repairs (TEVAR) involving zone 3. Methods: From April 2010 to January 2013, 14 consecutive high-risk patients (11 men; mean age 7068 years, range 56–87) underwent TEVAR with the PG technique for 10 thoracic aortic aneurysms (TAA), 2 traumatic aortic ruptures, and 2 aortic dissections without a suitable landing zone (.2 cm distal to the LSA). Five procedures were performed emergently for rupture (3 TAAs and the 2 trauma cases). Two patients had a periscope deployed in an aberrant right subclavian artery. The periscope endo…

thoracic aorta thoracic aortic aneurysm dissection arch aneurysm thoracic endovascular aortic repair stent-graft left subclavian artery periscope graft deployment technique proximal landing zoneSettore MED/22 - Chirurgia Vascolare
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Pęknięty tętniak aorty zstępującej - duże wyzwanie dla niedużego ośrodka chirurgii naczyniowej

2018

Pacjentka, lat 76, została skierowana do Uniwersyteckiego Szpitala Klinicznego w Opolu z powodu podejrzenia rozwarstwienia aorty wstępującej i tamponady osierdzia. Przy przyjęciu chora w stanie ogólnym skrajnie ciężkim, z objawami głębokiego wstrząsu, niestabilna hemodynamicznie oraz wentylowana mechanicznie. W wykonanym doraźnie badaniu angio-TK stwierdzono rozwarstwienie aorty zstępującej z pękniętym tętniakiem w jej środkowym i dolnym odcinku oraz duży krwiak lewej jamy opłucnowej. Ze względu na znaczną szerokość aorty zstępującej, nawet w jej początkowym odcinku oraz aorty brzusznej powyżej pnia trzewnego do zaopatrzenia tętniaka potrzebne są dwa elementy stentgraftów o średnicy 46 mm. …

thoracic endovascular aortic repairtętniak aorty piersiowejaortic rupturethoracic aortic aneurysmaortic stent-graftstentgraft aortalnyhypovolemic shockwstrząs krwotocznyChirurgia Polska
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