Search results for " implantation."

showing 10 items of 677 documents

Long-Term Results After Repair of Type A Acute Aortic Dissection According to False Lumen Patency

2009

Background Late survival and freedom from retreatment on the descending aorta was evaluated after ascending aortic repair for type A acute aortic dissection (TAAAD). Methods Between March 1992 and January 2006, 189 TAAAD patients (mean age, 52 ± 11; range, 17 to 83 years) were included; of these, 58 had a patent false lumen, and 49 had Marfan syndrome. The descending aorta was evaluated postoperatively with computed tomography (CT). Late outcomes were assessed by Cox regression analysis and actuarial survival and freedom from retreatment by the Kaplan-Meier method. Mean follow-up was 88 ± 44 months. Results There were 38 (20%) late deaths. At 10 years, survival was 89.8% ± 2.1% for patients…

MaleMarfan syndromeTime FactorsThoracicAortic aneurysm80 and overHospital MortalityTomographyAged 80 and overAortic dissectionMiddle AgedhumanitiesAcute Disease; Adolescent; Aged; Aged 80 and over; Aneurysm Dissecting; Aortic Aneurysm Thoracic; Blood Vessel Prosthesis Implantation; Female; Follow-Up Studies; Hospital Mortality; Humans; Italy; Male; Middle Aged; Retrospective Studies; Survival Rate; Time Factors; Tomography X-Ray Computed; Treatment Outcome; Young AdultAortic AneurysmX-Ray ComputedSurvival RateTreatment OutcomeItalyCardiothoracic surgeryDescending aortaAcute DiseaseCirculatory systemCardiologyFemaleCardiology and Cardiovascular MedicinePulmonary and Respiratory Medicinemedicine.medical_specialtyAdolescentBlood Vessel Prosthesis ImplantationYoung AdultAneurysmmedicine.arteryInternal medicinemedicineHumansAgedRetrospective StudiesAortaAortic Aneurysm Thoracicbusiness.industrynutritional and metabolic diseasesSettore MED/23 - Chirurgia Cardiacamedicine.diseaseAneurysmSurgeryAortic DissectionSurgeryTomography X-Ray ComputedbusinessDissectingFollow-Up StudiesThe Annals of Thoracic Surgery
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Surface characterization and in vivo evaluation of laser sintered and machined implants followed by resorbable-blasting media process: A study in she…

2015

Background This study aimed to compare the histomorphometric and histological bone response to laser-sintered implants followed by resorbable-blasting media (RBM) process relative to standard machined/RBM surface treated implants. Material and Methods Six male sheep (n=6) received 2 Ti-6Al-4V implants (1 per surface) in each side of the mandible for 6 weeks in vivo. The histomorphometric parameters bone-implant contact (BIC) and bone area fraction occupancy (BAFO) were evaluated. Results Optical interferometry revealed higher Sa and Sq values for the laser-sintered/RBM surface in relation to standard/RBM implants. No significant differences in BIC were observed between the two groups (p>0.2…

MaleMaterials scienceSurface PropertiesDentistryOdontología02 engineering and technologyBone ResponseOsseointegrationlaw.invention03 medical and health sciences0302 clinical medicinelawIn vivoOsseointegrationAnimalsGeneral DentistryDental ImplantsSheepbusiness.industryLasersResearchDental Implantation Endosseous030206 dentistryBone area021001 nanoscience & nanotechnologyBiocompatible materialLaser:CIENCIAS MÉDICAS [UNESCO]Ciencias de la saludSelective laser sinteringOtorhinolaryngologyUNESCO::CIENCIAS MÉDICASSurgeryOral Surgery0210 nano-technologybusinessRock blastingMedicina oral, patologia oral y cirugia bucal
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A novel trephine design for sinus lift lateral approach. Case report

2010

Various techniques are described in the literature, either by crestal or lateral approach. Sinus augmentation has a high percentage of success, but presents a number of intraoperative and postoperative complications. The most frequent complication is the Schneiderian membrane perforation with a percentage of perforations between 11% and 56% according to authors. The aim of this study is to describe another membrane approach technique for the sinus lateral wall osteotomy that minimizes the risk of Schneiderian membrane perforation. We present a case of a 50 year old patient attended the University Dental Clinic (UDC) of International University of Catalonia for implant and crown treatment du…

MaleMaxillary sinusbusiness.industrymedicine.medical_treatmentPerforation (oil well)Sinus liftDentistryMaxillary SinusMiddle Aged:CIENCIAS MÉDICAS [UNESCO]OsteotomyOsteotomyDental Implantationmedicine.anatomical_structureOtorhinolaryngologyTrephineUNESCO::CIENCIAS MÉDICASMaxillary first molarHumansMedicineSurgeryImplantbusinessGeneral DentistrySinus (anatomy)Medicina Oral Patología Oral y Cirugia Bucal
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A Comparison of 2 Mitral Annuloplasty Rings for Severe Ischemic Mitral Regurgitation: Clinical and Echocardiographic Outcomes.

2016

Controversies regarding the choice of annuloplasty rings for treatment of ischemic mitral regurgitation still exist. Aim of the study is to compare early performance of 2 different rings in terms of rest and exercise echocardiographic parameters (transmitral gradient, systolic pulmonary artery pressure, and mitral valve area), clinical outcomes, and recurrence of mitral regurgitation. From January 2008 till December 2013, prospectively collected data of patients who underwent coronary artery bypass grafting and undersizing mitral valve annuloplasty for severe chronic ischemic mitral regurgitation at our Institution were reviewed. A total of 93 patients were identified; among them 44 had sem…

MaleMitral Valve AnnuloplastyTime FactorsMyocardial IschemiaHemodynamics030204 cardiovascular system & hematologySeverity of Illness IndexVentricular Function Left0302 clinical medicinePostoperative ComplicationsRecurrenceMitral valve annuloplastyMitral valve030212 general & internal medicineHospital MortalityHeart Valve Prosthesis ImplantationExercise ToleranceIschemic mitral regurgitationMitral Valve InsufficiencyGeneral MedicineMiddle Agedmedicine.anatomical_structureTreatment OutcomeItalyHeart Valve ProsthesisCardiologyMitral ValveFemaleCardiology and Cardiovascular MedicineArteryEchocardiography StressPulmonary and Respiratory Medicinemedicine.medical_specialtyProsthesis Design03 medical and health sciencesInternal medicinemedicine.arterymedicineHumansMitral AnnuloplastyAgedRetrospective StudiesMitral regurgitationbusiness.industryRecovery of FunctionSurgeryPulmonary arteryChronic DiseaseExercise TestSurgerybusinessSeminars in thoracic and cardiovascular surgery
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Patient-Specific Rehearsal Feasibility Before Endovascular Repair of Ruptured Abdominal Aortic Aneurysm.

2019

Purpose: To evaluate the feasibility of a patient-specific rehearsal (PsR) before emergency endovascular aneurysm repairs (eEVAR) and its influence on the operation. Materials and Methods: From February 2016 to October 2016, 10 consecutive patients (mean age 75 +/- 7.4 years; 9 men) presenting with a ruptured abdominal aortic aneurysm (rAAA) suitable for standard EVAR were enrolled in the study. A 3-dimensional (3D) model of the abdominal aorta was generated on a virtual reality simulator based on the patient's computed tomography (CT) images. Following the patient-specific simulation setup, PsR was conducted during patient admission or in parallel with the preoperative eEVAR workup. Measur…

MaleModels AnatomicPatient-Specific Modelingmedicine.medical_specialtyTime Factorsmedicine.medical_treatmentAortic RuptureOperative TimeProsthesis DesignSettore MED/22 - Chirurgia VascolareEndovascular aneurysm repairendovascular aneurysm repairBlood Vessel Prosthesis Implantationabdominal aortic aneurysmAneurysmPostoperative ComplicationsRisk Factorsmedicine.arterymedicineHumansRadiology Nuclear Medicine and imagingpatient-specific rehearsalAgedAged 80 and overruptured aneurysmRuptured abdominal aortic aneurysmbusiness.industryAbdominal aortaEndovascular ProceduresModels CardiovascularPerioperativesimulationmedicine.diseaseAbdominal aortic aneurysmConfidence intervalBlood Vessel ProsthesisTreatment OutcomeSurgery Computer-AssistedPrinting Three-DimensionalFeasibility StudiesSurgeryFemaleStentsRadiologyCardiology and Cardiovascular MedicineComplicationbusinessAortic Aneurysm AbdominalJournal of endovascular therapy : an official journal of the International Society of Endovascular Specialists
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Simulation study of transcatheter heart valve implantation in patients with stenotic bicuspid aortic valve

2019

Bicuspid aortic valve (BAV) anatomy has routinely been considered an exclusion in the setting of transcatheter aortic valve implantation (TAVI) because of the large dimension of the aortic annulus having a more calcified, bulky, and irregular shape. The study aims to develop a patient-specific computational framework to virtually simulate TAVI in stenotic BAV patients using the Edwards SAPIEN 3 valve (S3) and its improved version SAPIEN 3 Ultra and quantify stent frame deformity as well as the severity of paravalvular leakage (PVL). Specifically, the aortic root anatomy of n.9 BAV patients who underwent TAVI was reconstructed from pre-operative CT imaging. Crimping and deployment of S3 fram…

MaleModels Anatomicmedicine.medical_treatment02 engineering and technology030218 nuclear medicine & medical imaging0302 clinical medicineBicuspid aortic valveBicuspid Aortic Valve DiseaseImage Processing Computer-AssistedCardiac skeletonPrecision MedicineAged 80 and overCardiac cycleSettore ING-IND/34 - Bioingegneria IndustrialeComputer Science Applicationsmedicine.anatomical_structureSurgery Computer-Assistedcardiovascular systemCardiologyFemalemedicine.symptommedicine.medical_specialtyBicuspid aortic valve0206 medical engineeringFinite Element AnalysisBiomedical EngineeringDiastoleTranscatheter Aortic Valve Replacement03 medical and health sciencesFluid-solid interactionInternal medicinePreoperative CaremedicineDeformityHumansIn patientHeart valveAgedRetrospective StudiesTranscatheter aortic valve implantationbusiness.industryStentComputational BiologyFinite-element analysiAortic Valve Stenosismedicine.disease020601 biomedical engineeringbusinessTomography X-Ray ComputedEchocardiography Transesophageal
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Neomyogenesis in 3D Dynamic Responsive Prosthesis for Inguinal Hernia Repair

2018

Despite undisputed improvements, prosthetics hernia repair continues to be affected by unacceptable rates of complications. Postoperative adverse events such as discomfort and chronic pain represent a subject of increasing concern among the surgical community. Poor quality biologic response, stiff scar plates, and mesh shrinkage, a typical effect of conventional static meshes and plugs, are all indicated as the main reasons for many of the complications related to inguinal hernia repair. Even the conventional concept of treatment based upon a supposed reinforcement of the groin consequent to the fibrotic incorporation of meshes, would appear to be inadequate in the light of the latest scien…

MaleMuscle CellsInguinal herniaBiomedical EngineeringTissue scaffoldMuscle CellMedicine (miscellaneous)Hernia InguinalBioengineeringMiddle AgedMuscle DevelopmentBiomaterialFollow-Up StudieProsthesis ImplantationProstheseTissue regenerationHumansMuscular tissueHerniorrhaphyFollow-Up StudiesAgedHuman
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Inhaled Prostacyclin, Nitric Oxide, and Nitroprusside in Pulmonary Hypertension After Mitral Valve Replacement

2005

Abstract Objective: Pulmonary hypertension increases morbidity and mortality in patients undergoing heart surgery. Mitral valve stenosis is frequently associated with an increase in pulmonary vascular resistance (PVR). Cardiopulmonary bypass exacerbates pulmonary hypertension in patients undergoing cardiac surgery. The aim of this study was to compare the hemodynamic effects of inhaled prostacyclin and nitric oxide and the administration of i.v. nitroprusside during cardiac surgery with a clinical, pharmacodynamic dose-response, prospective, randomized, and double-blind study (Group A: inhaled prostacyclin; Group B: inhaled nitric oxide; Group C: nitroprusside). Materials and Methods: Fifty…

MaleNitroprussidePulmonary and Respiratory Medicinemedicine.medical_specialtyCardiac outputHypertension Pulmonarymedicine.medical_treatmentProstacyclinNitric OxideNitric oxidechemistry.chemical_compoundMitral valve stenosisDouble-Blind MethodInternal medicineAdministration InhalationmedicineHumansMitral Valve StenosisAntihypertensive AgentsEndothelium-Dependent Relaxing FactorsHeart Valve Prosthesis ImplantationCardiopulmonary Bypassbusiness.industryMitral valve replacementMiddle Agedmedicine.diseaseEpoprostenolPulmonary hypertensionCardiac surgerymedicine.anatomical_structurechemistryAnesthesiacardiovascular systemCardiologyVascular resistanceMitral ValveFemaleSurgeryCardiology and Cardiovascular Medicinebusinessmedicine.drugJournal of Cardiac Surgery
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Impact of early (<7 days) pacemaker implantation after cardiac surgery on long‐term pacemaker dependency

2021

We aimed to investigate pacemaker dependency after at least 1 year in patients with early (7 days) implantation, compared to those who received a pacemaker ≥7 days after cardiac surgery. Secondary endpoints were length of hospital stay and in-hospital complications.Retrospective analysis of 108 consecutive patients who received a pacemaker after cardiac surgery between 06/2012 and 06/2018. Characteristics and outcomes were compared between patients with early (7 days) and late (≥7 days) implantation. Patients were followed up with evaluation of pacemaker dependency between April and June 2019. We identified predictors of dependency by logistic regression.In total, 63.9% were men, average ag…

MalePacemaker Artificialmedicine.medical_specialty030204 cardiovascular system & hematologyPacemaker implantationlaw.invention03 medical and health sciencesPostoperative Complications0302 clinical medicineRandomized controlled trialRisk FactorslawInternal medicinemedicineHumansIn patient030212 general & internal medicineCardiac Surgical ProceduresAgedRetrospective Studiesbusiness.industryGeneral MedicineLength of StayPacemaker dependencyCardiac surgeryCardiologyFemaleFrancePermanent pacemakerCardiology and Cardiovascular MedicinebusinessPacing and Clinical Electrophysiology
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Palatal positioned implants in severely atrophic maxillae versus conventional implants to support fixed full-arch prostheses: Controlled retrospectiv…

2014

Background: To evaluate soft tissue conditions and bone loss around palatal positioned implants supporting fixed full-arch prostheses to rehabilitate edentulous maxillae with horizontal atrophy and compare them with conventional well-centered implants placed in non-atrophic maxillae after a minimum follow-up of 5 years. Material and M ethods: A clinical retrospective study was performed of patients that were rehabilitated with full-arch fixed implant-supported maxillary prostheses and had a minimum follow-up of 5 years after implant loading. Patients were divided into 2 groups: patients with class IV maxilla according to Cawood and Howell and treated with palatal positioned implants (test) …

MalePalate HardTime Factorsmedicine.medical_treatmentDentistryOdontologíaProsthesisSeverity of Illness IndexMucositismedicineAlveolar ridgeMaxillaHumansGeneral DentistryRetrospective StudiesOrthodonticsDental Implantsbusiness.industryResearchDental Implantation EndosseousSoft tissueRetrospective cohort studyBuccal administrationMiddle Agedmedicine.disease:CIENCIAS MÉDICAS [UNESCO]Ciencias de la saludstomatognathic diseasesOtorhinolaryngologyMaxillaUNESCO::CIENCIAS MÉDICASSurgeryFemaleImplantAtrophyOral SurgerybusinessFollow-Up StudiesMedicina oral, patologia oral y cirugia bucal
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