Search results for " chimney"

showing 10 items of 17 documents

The “chimney forest” of the deep Montenegrin margin, south-eastern Adriatic Sea

2015

A spectacular field of columnar carbonates has been discovered on the Montenegrin margin in the southern Adriatic Sea at a depth of about 450 m. The site exposes many columnar carbonates protruding from the substrate or abated on the bottom. Such carbonates attain maximum visible lengths of ca. 60 cm with diameters up to 20 cm; display an annular growth, and are either hollow or plugged by indurated sediment. Petrographic and geochemical analyses document the pervasive presence of dolomite, and delta C-13 values as low as -30%(0) VPDB. These 'chimneys' are therefore interpreted as former conduits related to hydrocarbon expulsion in this sector of the Adriatic basin. However, available data …

Adriatic SeaSessile fauna010504 meteorology & atmospheric sciencesHydrocarbonStratigraphyDolomite010502 geochemistry & geophysicsOceanography01 natural scienceslaw.inventionSedimentary depositional environmentchemistry.chemical_compoundPaleontologylawChimney14. Life underwaterGlacial periodRadiocarbon datingCarbonate chimneys[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environmentLithificationComputingMilieux_MISCELLANEOUS0105 earth and related environmental sciences[SDU.OCEAN]Sciences of the Universe [physics]/Ocean AtmosphereSedimentGeology15. Life on landGeophysicschemistryROVCoralsCarbonateEconomic GeologyGeology
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Multiple periscope and chimney grafts to treat ruptured thoracoabdominal and pararenal aortic aneurysms

2011

Purpose: To report midterm outcomes after urgent endovascular repair of ruptured pararenal or thoracoabdominal aortic aneurysms using multiple periscope and chimney grafts to preserve renovisceral branch perfusion and facilitate aneurysm exclusion. Methods: Nine consecutive men (mean age 72614 years, range 40–88) presenting with ruptured thoracoabdominal (n56), pararenal (n52), or infrarenal (n51) aortic aneurysm underwent urgent endovascular repair with at least 1 periscope graft delivered via a transfemoral access; chimney grafts were installed from an axillary access. In all, 17 periscope and 7 chimney grafts were used to reperfuse 11 renal and 13 visceral arteries in the 9 patients. The…

AdultMalemedicine.medical_specialtyTime Factorsmedicine.medical_treatmentAortic RuptureLess invasive610 Medicine & healthRuptured Aortic AneurysmProsthesis DesignEndovascular aneurysm repairSettore MED/22 - Chirurgia VascolareAortography2705 Cardiology and Cardiovascular Medicinelaw.inventionBlood Vessel Prosthesis ImplantationlawmedicineHumans2741 Radiology Nuclear Medicine and ImagingRadiology Nuclear Medicine and imagingChimneyAgedRetrospective Studiesendodebranching renovisceral arteries chimney graft periscope graft stentgraft endograft ruptured aortic aneurysm ruptured thoracoabdominal aortic aneurysm ruptured pararenal aortic aneurysm ruptured AAA endovascular aneurysm repairAged 80 and overAortic Aneurysm Thoracicbusiness.industry10042 Clinic for Diagnostic and Interventional RadiologyEndovascular ProceduresChimney graftBlood flowMiddle AgedSurgeryBlood Vessel Prosthesis10020 Clinic for Cardiac Surgery2746 SurgeryTreatment Outcomecardiovascular systemSurgeryFemaleStentsRadiologyPeriscopeCardiology and Cardiovascular MedicinebusinessTomography X-Ray ComputedAortic Aneurysm Abdominal
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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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Identification of optimal device combinations for the chimney endovascular aneurysm repair technique within the PERICLES registry

2018

Abstract Objective The ideal stent combination for chimney endovascular aneurysm repair remains undetermined. Therefore, we sought to identify optimal aortic and chimney stent combinations that are associated with the best outcomes by analyzing the worldwide collected experience in the PERformance of chImney technique for the treatment of Complex aortic pathoLogiES (PERICLES) registry. Methods The PERICLES registry was reviewed for patients with pararenal aortic disease electively treated from 2008 to 2014. Eleven different aortic devices were identified with three distinct subgroups: group A (n = 224), nitinol/polyester; group B (n = 105), stainless steel/polyester; and group C (n = 69), n…

MaleRegistrieTime FactorsEndoleakmedicine.medical_treatmentComorbidity030204 cardiovascular system & hematology030230 surgeryEndovascular aneurysm repairSettore MED/22 - Chirurgia VascolareAortic aneurysm0302 clinical medicineRisk FactorsRetrospective StudieOcclusionOdds RatioStentRegistriesMultivariate AnalysiPolytetrafluoroethyleneAged 80 and overEndovascular ProceduresHazard ratioGraft Occlusion VascularEuropeBlood Vessel ProsthesiTreatment OutcomeCardiothoracic surgeryStentsFemaleCardiology and Cardiovascular MedicineSTENT GRAFT; CHIMENY GRAFT; CHIMNEY TECHINQUEHumanUnited Statemedicine.medical_specialtyHospitals Low-VolumeTime FactorPolyestersPolyesterProsthesis DesignDisease-Free Survival03 medical and health sciencesBlood Vessel Prosthesis ImplantationBlood vessel prosthesisAlloysmedicineHumansProportional Hazards ModelsRetrospective StudiesAgedEndovascular ProcedureAortic Aneurysm Thoracicbusiness.industryRisk FactorStentOdds ratiomedicine.diseaseStainless SteelUnited StatesBlood Vessel ProsthesisSurgeryMultivariate AnalysisAlloyProportional Hazards ModelSurgerybusinessHospitals High-VolumeAortic Aneurysm Abdominal
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Mid-term Results of Chimney and Periscope Grafts in Supra-aortic Branches in High Risk Patients

2017

Purpose Report mid-term outcomes of thoracic endovascular aneurysm repair (TEVAR) with chimney and periscope grafts (CPG) in supra-aortic branches (SAB). Methods Retrospective analysis, from October 2009 to May 2014, of patients with aneurysms requiring TEVAR with zone 0/1/2 proximal landing in association with at least one CPG in the SAB. All patients were considered at high risk for conventional surgery. Peri-operative mortality and morbidity, retrograde type A dissection, maximum aortic transverse diameter (TD) and its post-operative evolution, endoleak, survival, freedom from cardiovascular re-interventions, and CPG freedom from occlusion during the follow-up were analysed. Results Fort…

MaleTime FactorsEndoleakComputed Tomography Angiographymedicine.medical_treatmentMid term resultsKaplan-Meier Estimate030204 cardiovascular system & hematologySettore MED/22 - Chirurgia VascolareEndovascular aneurysm repairAortic aneurysmPostoperative Complications0302 clinical medicineRisk FactorsOcclusionMedicine030212 general & internal medicineAortic arch aneurysm; Chimney graft/technique; Endoleak; Endovascular aneurysm repair; Parallel graft; Periscope graft; Surgery; Cardiology and Cardiovascular MedicineAged 80 and overeducation.field_of_studyHigh risk patients10042 Clinic for Diagnostic and Interventional RadiologyEndovascular ProceduresMiddle Aged2746 SurgeryTreatment Outcomecardiovascular systemFemaleRadiologyCardiology and Cardiovascular MedicineAdultmedicine.medical_specialtyPopulation610 Medicine & healthProsthesis DesignAortographyRisk AssessmentDisease-Free Survival2705 Cardiology and Cardiovascular MedicineBlood Vessel Prosthesis ImplantationEndovascular aneurysm repair03 medical and health sciencesAneurysmmedicine.arteryHumanseducationAgedRetrospective StudiesAortaAortic Aneurysm ThoracicParallel graftAortic arch aneurysmbusiness.industryPatient SelectionChimney graft/techniquemedicine.diseaseBlood Vessel Prosthesis10020 Clinic for Cardiac SurgerySurgeryPeriscope graftSurgerybusinessEuropean Journal of Vascular and Endovascular Surgery
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Collected Transatlantic Experience From the PERICLES Registry: Use of Chimney Grafts to Treat Post-EVAR Type Ia Endoleaks Shows Good Midterm Results

2018

Purpose: The aim of this retrospective analysis was to evaluate the performance of the chimney (ch) technique in the treatment of type Ia endoleaks after standard endovascular aneurysm repair (EVAR). Methods: Between January 2008 and December 2014, 517 chEVAR procedures were performed in 13 US and European vascular centers (PERICLES registry). Thirty-nine patients (mean age 76.9±7.1 years; 33 men) were treated for persistent type Ia endoleak and had computed tomography angiography or magnetic resonance angiography follow-up at >1 month. Endurant abdominal stent-grafts were used in the 20 cases. Single chimney graft placement was performed in 18 (46%) patients and multiple in 21 (54%). O…

MaleTime Factorsabdominal aortic aneurysm; chimney graft; chimney technique; endoleak; endovascular aneurysm repair; juxtarenal aortic aneurysm; parallel graft; pararenal aortic aneurysm; periscope graft; snorkel graftmedicine.medical_treatmentJuxtarenal aortic aneurysm030204 cardiovascular system & hematologySettore MED/22 - Chirurgia VascolareEndovascular aneurysm repairendovascular aneurysm repair0302 clinical medicineRisk FactorsRetrospective analysisChimneyRegistries030212 general & internal medicineAged 80 and overEndovascular ProceduresChimney graftAbdominal aortic aneurysmEuropeTreatment Outcomesnorkel graftFemaleStentsjuxtarenal aortic aneurysmCardiology and Cardiovascular MedicineReoperationmedicine.medical_specialtyparallel graftendoleakperiscope graftProsthesis Designpararenal aortic aneurysmBlood Vessel Prosthesis Implantation03 medical and health sciencesabdominal aortic aneurysmchimney techniquemedicineHumansRadiology Nuclear Medicine and imagingAgedRetrospective Studiesbusiness.industrychimney graftmedicine.diseaseUnited StatesBlood Vessel ProsthesisSurgerySurgerybusinessAortic Aneurysm AbdominalJournal of Endovascular Therapy
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Results of chimney endovascular aneurysm repair as used in the PERICLES Registry to treat patients with suprarenal aortic pathologies

2020

Background: The prevailing evidence calls for using chimney/snorkel endovascular repair (ch-EVAR) with one or two chimney grafts. No studies up to now focus on its applicability and results for the treatment of suprarenal aortic pathologies (SRAP). Hence, we evaluated the clinical and radiologic results of ch-EVAR treatment for SRAP placing three or more chimney grafts within the PERICLES Registry. Methods: Data from 517 patients suffering complex aortic pathologies treated by ch-EVAR between 2008 and 2014 at 13 European and U.S. centers were retrospectively reviewed and analyzed. Results: Sixty-seven ch-EVAR-treated patients (12.9% of the entire PERICLES cohort) presented SRAP (83.5% elect…

MaleTime Factorsmedicine.medical_treatmentTechnical success030204 cardiovascular system & hematologyEndovascular aneurysm repairSettore MED/22 - Chirurgia VascolarePostoperative ComplicationsRenal Artery0302 clinical medicineRisk FactorsSuperior mesenteric arteryChimneyRegistries030212 general & internal medicineSuperior mesenteric arteryAged 80 and overTriple chimney EVARIncidence (epidemiology)Endovascular ProceduresChimney graftEuropeSuprarenal aneurysmsTreatment OutcomeCohortFemaleStentsCardiology and Cardiovascular Medicinemedicine.medical_specialtyAortic DiseasesProsthesis DesignBlood Vessel Prosthesis Implantation03 medical and health sciencesAneurysmMesenteric Artery Superiormedicine.arterymedicineHumansComplex aneurysmAgedRetrospective StudiesSuprarenal aneurysmbusiness.industryComplex aneurysms; Multiple chimney EVAR; Superior mesenteric artery; Suprarenal aneurysms; Triple chimney EVARmedicine.diseaseMultiple chimney EVARUnited StatesBlood Vessel ProsthesisSurgerySurgerybusinessComplex aneurysms
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A 12-Year Experience With Chimney and Periscope Grafts for Treatment of Type I Endoleaks.

2015

Purpose: To evaluate the midterm outcomes of chimney and/or periscope grafts (CPGs) in patients presenting type I endoleak after a previous endovascular aneurysm repair (EVAR). Methods: Between June 2002 and April 2014, 24 consecutive patients (mean age 73.9±9.2 years; 23 men) presenting a type I endoleak were addressed with CPGs to extend the proximal and/or distal landing zone and to maintain side branch perfusion. Indication for treatment was a type Ia endoleak in 23 (96%) patients and a type Ib endoleak in one. Median interval from the previous EVAR to endoleak treatment with CPGs was 52.2±48.9 months (range 0.2–179). All patients had proximal/distal landing zones precluding any standa…

Malemedicine.medical_specialtyEndoleakmedicine.medical_treatmentparallel graftTarget vesselmorbidityperiscope graftEndovascular aneurysm repairpararenal aortic aneurysmSettore MED/22 - Chirurgia Vascolarelaw.inventionendovascular aneurysm repairBlood Vessel Prosthesis Implantationabdominal aortic aneurysmlawRecurrencethoracoabdominal aortic aneurysmMedicineHumansRadiology Nuclear Medicine and imagingIn patientChimneyself-expanding covered stentVascular PatencyAgedabdominal aortic aneurysm; chimney graft; endoleak; endovascular aneurysm repair; morbidity; mortality; parallel graft; pararenal aortic aneurysm; patency; periscope graft; reintervention; self-expanding covered stent; stent-graft; target vessel; thoracoabdominal aortic aneurysmreinterventionstent-graftbusiness.industryEndovascular ProceduresChimney graftchimney graftmedicine.diseasemortalityAbdominal aortic aneurysmSurgeryBlood Vessel ProsthesisSurvival RateTreatment OutcomeSurgeryFemalePeriscopeCardiology and Cardiovascular Medicinebusinesspatencytarget vesselAortic Aneurysm AbdominalJournal of endovascular therapy : an official journal of the International Society of Endovascular Specialists
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Endovascular treatment options for complex abdominal aortic aneurysms

2015

Abstract Purpose To report short-term and midterm outcomes of endovascular aneurysm repair (EVAR) of complex aneurysms requiring revascularization of visceral arteries. Materials and Methods Prospective data were collected from patients deemed unsuitable for conventional EVAR and conventional surgery who were treated with different endovascular approaches according to the clinical presentation of the aneurysm. Custom-made fenestrated endovascular aneurysm repair (CM f-EVAR) was used in the elective setting, homemade fenestrated endovascular aneurysm repair (HM f-EVAR) or HM f-EVAR combined with chimney endovascular aneurysm repair (ch-EVAR) was used in the emergent setting in patients with …

Malemedicine.medical_specialtyRadiology Nuclear Medicine and ImagingTime Factorsmedicine.medical_treatmentCustom-made fenestrated endovascular aneurysm repairProsthesis DesignRevascularizationAortographyEndovascular aneurysm repairSettore MED/22 - Chirurgia VascolareBlood Vessel Prosthesis ImplantationAortic aneurysmAneurysmBlood vessel prosthesismedicine.arterymedicineHumansRenal arterychimney endovascular aneurysm repairVascular PatencyAgedRetrospective StudiesAged 80 and overbusiness.industryhomemade fenestrated endovascular aneurysm repairEndovascular Procedureshomemade fenestrated endovascular aneurysm repair; Custom-made fenestrated endovascular aneurysm repair; chimney endovascular aneurysm repairPerioperativeMiddle Agedmedicine.diseaseBlood Vessel ProsthesisSurgeryVisceraTreatment OutcomeRegional Blood FlowFemaleStentsRadiologyTomography X-Ray ComputedbusinessCardiology and Cardiovascular MedicineBlood Flow VelocityAortic Aneurysm AbdominalAbdominal surgery
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Use of covered chimney stents for pararenal aortic pathologies is safe and feasible with excellent patency and low incidence of endoleaks.

2012

Background To present the clinical experience of consecutive series with use of balloon-expandable and self-expanding chimney endografts (balloon-expandable covered stent group [BECS] vs self-expanding covered stent group [SECS]) in the endovascular treatment of challenging aortic pathologies requiring renal and/or visceral revascularization. Methods Between January 2009 and May 2011, data for 37 high-risk patients from one center and 35 patients from another institution, with pararenal aortic pathologies treated by the chimney endovascular technique, were prospectively collected. The chimney-graft technique is based on the deployment of a covered or bare-metal stent parallel to the aortic …

Malemedicine.medical_specialtyTime FactorsEndoleakmedicine.medical_treatmentEVAR aneurysm chimney periscopesAortic Diseases610 Medicine & healthKaplan-Meier EstimateRevascularizationBalloonProsthesis DesignSettore MED/22 - Chirurgia VascolareAortographyRisk Assessment2705 Cardiology and Cardiovascular MedicineBlood Vessel Prosthesis ImplantationPredictive Value of TestsRisk FactorsAngioplastyGermanymedicineHumansVascular PatencyComputed tomography angiographyAgedRetrospective StudiesAged 80 and overmedicine.diagnostic_testbusiness.industryStentPerioperativemedicine.disease10020 Clinic for Cardiac Surgery2746 SurgerySurgeryBlood Vessel ProsthesisStenosisTreatment OutcomeCuffSurgeryFemaleStentsRadiologyCardiology and Cardiovascular MedicinebusinessTomography X-Ray ComputedAngioplasty BalloonSwitzerlandJournal of vascular surgery
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