Search results for "Atrial"

showing 10 items of 564 documents

A stochastic approach for automatic registration and fusion of left atrial electroanatomic maps with 3D CT anatomical images.

2007

The integration of electroanatomic maps with highly resolved computed tomography cardiac images plays an important role in the successful planning of the ablation procedure of arrhythmias. In this paper, we present and validate a fully-automated strategy for the registration and fusion of sparse, atrial endocardial electroanatomic maps (CARTO maps) with detailed left atrial (LA) anatomical reconstructions segmented from a pre-procedural MDCT scan. Registration is accomplished by a parameterized geometric transformation of the CARTO points and by a stochastic search of the best parameter set which minimizes the misalignment between transformed CARTO points and the LA surface. The subsequent …

MaleRadiology Nuclear Medicine and ImagingPhysics and Astronomy (miscellaneous)Computer sciencemedicine.medical_treatmentBiomedical EngineeringComputed tomographySensitivity and SpecificityPattern Recognition AutomatedImaging Three-DimensionalLeft atrialArtificial IntelligenceAtrial FibrillationmedicineHumansComputer visionStochastic Processesmedicine.diagnostic_testRadiological and Ultrasound Technologybusiness.industryGeometric transformationBody Surface Potential MappingReproducibility of ResultsAblationCatheterSubtraction TechniqueFemaleArtificial intelligencebusinessTomography X-Ray ComputedAlgorithmsPhysics in medicine and biology
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Incidence of thromboembolic complications in patients with atrial fibrillation or mechanical heart valves with a subtherapeutic international normali…

2012

Subtherapeutic international normalized ratio (INR) is frequently encountered in clinical practice, and patients with high-risk atrial fibrillation (AF) and with mechanical heart valve (MHV) with inadequate anticoagulation may be exposed to an increased risk of thromboembolic events (TE). However, there are no prospective data evaluating this risk. Consecutive patients with a history of stable anticoagulation, but with a subtherapeutic INR, were prospectively included. Data on use and dose of low-molecular weight heparin (LMWH) bridging therapy were collected. The incidence of objectively confirmed TE and of major bleeding events within 90 days after the index INR was assessed. Five hundred…

MaleRiskmedicine.medical_specialtyPopulationvenous thromboembolismHemorrhageComorbidityThrombophiliaFollow-Up StudiePostoperative ComplicationsInternal medicineThromboembolismAtrial FibrillationmedicineHumansThrombophiliaProspective StudiesInternational Normalized RatioeducationProspective cohort studyAgedAged 80 and overHeart Valve Prosthesis Implantationeducation.field_of_studybusiness.industryIncidence (epidemiology)IncidenceMedicine (all)WarfarinAnticoagulantAnticoagulantsAtrial fibrillationHematologyHeparin Low-Molecular-WeightMiddle Agedmedicine.diseaseConfidence intervalSurgeryProspective StudieHeart Valve ProsthesiHeart Valve ProsthesisFemalePostoperative ComplicationWarfarinbusinessCohort studymedicine.drugFollow-Up StudiesHuman
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Natriuretic peptide system expression in murine and human submandibular salivary glands: a study of the spatial localisation of ANB, BNP, CNP and the…

2019

AbstractThe natriuretic peptide (NP) system comprises of three ligands, the Atrial Natriuretic Peptide (ANP), Brain Natriuretic peptide (BNP) and C-type Natriuretic peptide (CNP), and three natriuretic peptide receptors, NPRA, NPRB and NPRC. Here we present a comprehensive study of the natriuretic peptide system in healthy murine and human submandibular salivary glands (SMGs). We show CNP is the dominant NP in mouse and human SMG and is expressed together with NP receptors in ducts, autonomic nerves and the microvasculature of the gland, suggesting CNP autocrine signalling may take place in some of these glandular structures. These data suggest the NP system may control salivary gland funct…

MaleSettore BIO/17 - Istologia0301 basic medicinemedicine.medical_specialtyHistologyReceptors PeptidePhysiologymedicine.drug_classAtrial natriuretic peptide ANPNatriuretic peptide receptor B NPRBMice03 medical and health sciences0302 clinical medicineAtrial natriuretic peptideInternal medicineNatriuretic Peptide BrainmedicineNatriuretic peptideAnimalsHumansAutonomic nervous systemB-type natriuretic peptide BNPNatriuretic peptide receptor C NPRCAutocrine signallingReceptorSalivary glandSubmandibular glandSalivary glandC-type natriuretic peptide CNPChemistryNatriuretic Peptide C-TypeCell BiologyGeneral MedicineNatriuretic peptide receptor A NPRABrain natriuretic peptideSubmandibular glandNeoplasm Proteins030104 developmental biologymedicine.anatomical_structureEndocrinologyOral squamous cell carcinoma030220 oncology & carcinogenesisCarcinoma Squamous CellFemaleMouth NeoplasmsAtrial Natriuretic FactorHomeostasisJournal of Molecular Histology
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Major adverse cardiovascular events in non-valvular atrial fibrillation with chronic obstructive pulmonary disease: the ARAPACIS study

2018

Chronic obstructive pulmonary disease (COPD) increases the risk of mortality in non-valvular atrial fibrillation (NVAF) patients. Data on the relationship of COPD to major cardiovascular events (MACE) in AF have not been defined. The aim of the study is to assess the predictive value of COPD on incident MACE in NVAF patients over a 3-year follow-up. In the Atrial Fibrillation Registry for Ankle-Brachial Index Prevalence Assessment-Collaborative Italian Study (ARAPACIS) cohort, we evaluate the impact of COPD on the following clinical endpoints: MACE (including vascular death, fatal/non-fatal MI and stroke/TIA), cardiovascular (CV) death and all-cause mortality. Among 2027 NVAF patients, pati…

MaleSettore MED/09 - Medicina Interna030204 cardiovascular system & hematologyPulmonary Disease Chronic Obstructive0302 clinical medicineRisk FactorsMajor cardiovascular eventCause of DeathRisk of mortalityPrevalenceMedicine030212 general & internal medicineProspective StudiesRegistriesProspective cohort studyStrokeCause of deathCOPDChronic obstructive pulmonary diseaseIncidenceHazard ratioAtrial fibrillation; Cardiovascular mortality; Chronic obstructive pulmonary disease; Major cardiovascular events; Aged; Atrial Fibrillation; Cardiovascular Diseases; Cause of Death; Endpoint Determination; Female; Follow-Up Studies; Humans; Incidence; Italy; Male; Predictive Value of Tests; Prevalence; Prospective Studies; Pulmonary Disease Chronic Obstructive; Registries; Risk Factors; Internal Medicine; Emergency MedicineAtrial fibrillationAtrial fibrillation Cardiovascular mortality Chronic obstructive pulmonary disease Major cardiovascular eventsItalyCardiovascular DiseasesCardiologyEmergency MedicineFemaleSettore SECS-S/01 - Statisticamedicine.medical_specialtyChronic ObstructiveCardiovascular mortalityEndpoint DeterminationAtrial fibrillation; Cardiovascular mortality; Chronic obstructive pulmonary disease; Major cardiovascular events; Aged; Atrial Fibrillation; Cardiovascular Diseases; Cause of Death; Endpoint Determination; Female; Follow-Up Studies; Humans; Incidence; Italy; Male; Predictive Value of Tests; Prevalence; Prospective Studies; Pulmonary Disease Chronic Obstructive; Registries; Risk FactorsSocio-culturalePulmonary Disease03 medical and health sciencesPredictive Value of TestsInternal medicineInternal MedicineHumanscardiovascular diseasesAtrial fibrillation; Cardiovascular mortality; Chronic obstructive pulmonary disease; Major cardiovascular eventsAgedbusiness.industryMajor cardiovascular eventsmedicine.diseaseAtrial fibrillationAtrial fibrillation; Cardiovascular mortality; Chronic obstructive pulmonary disease; Major cardiovascular events; Internal Medicine; Emergency MedicinebusinessMaceFollow-Up Studies
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Brain and kidney, victims of atrial microembolism in elderly hospitalized patients? Data from the REPOSI study

2015

Abstract Background It is well known that atrial fibrillation (AF) and chronic kidney disease (CKD) are associated with a higher risk of stroke, and new evidence links AF to cognitive impairment, independently from an overt stroke (CI). Our aim was to investigate, assuming an underlying role of atrial microembolism, the impact of CI and CKD in elderly hospitalized patients with AF. Methods We retrospectively analyzed the data collected on elderly patients in 66 Italian hospitals, in the frame of the REPOSI project. We analyzed the clinical characteristics of patients with AF and different degrees of CI. Multivariate logistic analysis was used to explore the relationship between variables an…

MaleSettore MED/09 - Medicina InternaREPOSI studyKidneyDisability EvaluationRetrospective StudieRisk Factorshospitalized patientAtrial Fibrillation80 and overOdds RatioLS4_4Renal InsufficiencyChronicMultivariate AnalysiStrokeAged 80 and overMedicine (all)BrainAtrial fibrillationStrokeFemaleatrial microembolismHumanGlomerular Filtration Ratemedicine.medical_specialtySocio-culturaleRenal functionelderlyCognition DisorderInternal medicineThromboembolismmedicineInternal MedicineHumansRenal insufficiency chronicHeart AtriaIntensive care medicineAged; Anticoagulants; Atrial fibrillation; Dementia; Renal insufficiency chronic; Stroke; Aged; Aged 80 and over; Anticoagulants; Atrial Fibrillation; Brain; Cognition Disorders; Dementia; Disability Evaluation; Female; Glomerular Filtration Rate; Heart Atria; Humans; Kidney; Male; Multivariate Analysis; Odds Ratio; Renal Insufficiency Chronic; Retrospective Studies; Risk Factors; Stroke; ThromboembolismAgedRetrospective Studiesbusiness.industryRisk FactorSettore MED/09 - MEDICINA INTERNAAnticoagulantAnticoagulantsRetrospective cohort studyOdds ratiomedicine.diseaseAtrial fibrillationBlood pressureHeart failureMultivariate AnalysisAged Anticoagulants Atrial fibrillation Dementia Renal insufficiency chronic Stroke.Aged; Anticoagulants; Atrial fibrillation; Dementia; Renal insufficiency chronic; Strokeatrial microembolism; elderly; hospitalized patients; REPOSI study;DementiabusinessCognition DisordersKidney diseaseAged; Anticoagulants; Atrial fibrillation; Dementia; Renal insufficiency chronic; Stroke; Aged; Aged 80 and over; Anticoagulants; Atrial Fibrillation; Brain; Cognition Disorders; Dementia; Disability Evaluation; Female; Glomerular Filtration Rate; Heart Atria; Humans; Kidney; Male; Multivariate Analysis; Odds Ratio; Renal Insufficiency Chronic; Retrospective Studies; Risk Factors; Stroke; Thromboembolism; Internal Medicine; Medicine (all)
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Validation of an atrial fibrillation risk algorithm in whites and African Americans.

2010

Background We sought to validate a recently published risk algorithm for incident atrial fibrillation (AF) in independent cohorts and other racial groups. Methods We evaluated the performance of a Framingham Heart Study (FHS)-derived risk algorithm modified for 5-year incidence of AF in the FHS (n = 4764 participants) and 2 geographically and racially diverse cohorts in the age range 45 to 95 years: AGES (the Age, Gene/Environment Susceptibility-Reykjavik Study) (n = 4238) and CHS (the Cardiovascular Health Study) (n = 5410, of whom 874 [16.2%] were African Americans). The risk algorithm included age, sex, body mass index, systolic blood pressure, electrocardiographic PR interval, hypertens…

MaleSystoleBlack PeopleBlood PressureKaplan-Meier EstimateArticleWhite PeopleBody Mass IndexCohort StudiesElectrocardiographyFramingham Heart StudySex FactorsRisk FactorsAtrial FibrillationInternal MedicineMedicineHumansRisk factorAgedProportional Hazards ModelsAged 80 and overHeart FailureFramingham Risk Scorebusiness.industryIncidenceAge FactorsMiddle AgedConfidence intervalUnited StatesEuropeRelative riskCohortHypertensionFemalebusinessBody mass indexAlgorithmAlgorithmsCohort studyFollow-Up StudiesArchives of internal medicine
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Prevalence and Risk Factors Associated with Use of QT-Prolonging Drugs in Hospitalized Older People

2016

Aims: The objective of this study was to evaluate the prevalence of the prescription of QT-prolonging drugs at hospital admission and discharge and the risk factors associated with their use in older people (aged 65 years and older). Methods: Data were obtained from the REPOSI (REgistro POliterapie SIMI [Società Italiana di Medicina Interna]) registry, which enrolled 4035 patients in 2008 (n = 1332), 2010 (n = 1380), and 2012 (n = 1323). Multivariable logistic regression was performed to determine the risk factors independently associated with QT-prolonging drug use. QT-prolonging drugs were classified by the risk of Torsades de Pointes (TdP) (definite, possible, or conditional) acc…

MaleTORSADES-DE-POINTES INTERVAL PROLONGATION PATIENT CIPROFLOXACIN COHORT DEATH MULTIMORBIDITY AMIODARONE MORTALITY AIFA.Amiodarone030204 cardiovascular system & hematologyCIPROFLOXACINLogistic regressionAmiodaroneElectrocardiography0302 clinical medicineRisk FactorsTorsades de PointesAtrial Fibrillation80 and overPrevalencePharmacology (medical)030212 general & internal medicineAged; Aged 80 and over; Amiodarone; Atrial Fibrillation; Electrocardiography; Female; Humans; Long QT Syndrome; Male; Middle Aged; Patient Discharge; Prevalence; Risk Factors; Torsades de Pointes; Hospitalizationmedia_commonAged 80 and overTorsades de PointeAged; Aged 80 and over; Amiodarone; Atrial Fibrillation; Electrocardiography; Female; Humans; Long QT Syndrome; Male; Middle Aged; Patient Discharge; Prevalence; Risk Factors; Torsades de Pointes; Hospitalization; Pharmacology (medical); Geriatrics and Gerontology; Medicine (all)Medicine (all)DEATHMiddle AgedPatient DischargeHospitalizationLong QT SyndromeCohortHospitalized Older PeopleFemalemedicine.drugHumanDrugmedicine.medical_specialtymedia_common.quotation_subjectMULTIMORBIDITYTorsades de pointesPATIENT03 medical and health sciencesPharmacotherapyInternal medicineINTERVAL PROLONGATIONmedicineHumansTORSADES-DE-POINTESCOHORTMedical prescriptionAIFAAgedbusiness.industryMORTALITYRisk FactorSettore MED/09 - MEDICINA INTERNAOdds ratiomedicine.diseaseQT-Prolonging DrugAged; Aged 80 and over; Amiodarone; Atrial Fibrillation; Electrocardiography; Female; Humans; Long QT Syndrome; Male; Middle Aged; Patient Discharge; Prevalence; Risk Factors; Torsades de Pointes; Hospitalization; Geriatrics and Gerontology; Pharmacology (medical)Physical therapyGeriatrics and Gerontologybusiness
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Relevance of supraventricular runs detected after cerebral ischemia

2017

Objective:Prolonged ECG monitoring after stroke frequently reveals short paroxysmal atrial fibrillation (pAF) and supraventricular (SV) runs. The minimal duration of atrial fibrillation (AF) required to induce cardioembolism, the relevance of SV runs, and whether short pAF results from cerebral damage itself are currently being debated. We aimed to study the relevance of SV runs and short pAF detected by prolonged Holter ECG after cerebral ischemia during long-term follow-up.Methods:Analysis is from the prospective Find-AF trial (ISRCTN46104198). We included patients with acute cerebral ischemia. Those without AF on admission received 7-day Holter ECG monitoring. We differentiated patients …

MaleTachycardia Ectopic AtrialTachycardiamedicine.medical_specialtyTime FactorsIschemiaKaplan-Meier Estimate030204 cardiovascular system & hematologySeverity of Illness IndexBrain IschemiaElectrocardiography03 medical and health sciences0302 clinical medicineInternal medicineAtrial FibrillationSeverity of illnessmedicineHumansProspective Studiescardiovascular diseasesProspective cohort studyStrokeAgedAged 80 and overmedicine.diagnostic_testbusiness.industryAtrial fibrillationMiddle Agedmedicine.diseaseAmbulatoryElectrocardiography AmbulatoryCardiologyFemaleNeurology (clinical)medicine.symptombusinessElectrocardiography030217 neurology & neurosurgeryFollow-Up StudiesNeurology
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Prognostic Role of Subsequent Atrial Tachycardias Occurring During Ablation of Persistent Atrial Fibrillation

2013

Background— The role of subsequent atrial tachycardias (AT) in the context of persistent atrial fibrillation (AF) remains undetermined. This study evaluated the prognostic role of subsequent ATs for arrhythmia recurrences after catheter ablation of persistent AF. Methods and Results— A total of 110 patients with persistent AF (63±9 years; 22 women; 61 long-lasting persistent AF) underwent pulmonary vein isolation followed by electrogram-guided ablation. After AF terminated to AT, patients were separated by the randomization protocol to receive either direct cardioversion (group A) or further ablation of subsequent ATs to sinus rhythm (group B). After a mean follow-up of 20.1±13.3 months af…

MaleTachycardia Ectopic Atrialmedicine.medical_specialtyRandomizationmedicine.medical_treatmentElectric CountershockContext (language use)Catheter ablationKaplan-Meier EstimateCardioversionlaw.inventionRandomized controlled triallawPhysiology (medical)Internal medicineAtrial FibrillationmedicineHumansSinus rhythmProspective StudiesAgedbusiness.industryAtrial fibrillationMiddle AgedPrognosisAblationmedicine.diseaseSurgeryCatheter AblationCardiologyFemaleCardiology and Cardiovascular MedicinebusinessCirculation: Arrhythmia and Electrophysiology
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Frequency of cardiac arrhythmias in older adults: Findings from the Subclinical Atrial Fibrillation and Risk of Ischemic Stroke (SAFARIS) study

2021

BACKGROUND: Prolonged monitoring of cardiac rhythm has been used to screen for subclinical atrial fibrillation (AF); little is known about other arrhythmias in the general population, especially in the elderly, who are at higher risk of arrhythmias. METHODS: We evaluated the frequency of arrhythmias in the tri-ethnic (white, Black, Hispanic), community-based Subclinical Atrial Fibrillation and Risk of Ischemic Stroke (SAFARIS) study using a patch-based recorder for up to 14 days in 527 participants free of AF, congestive heart failure (CHF) or history of stroke. Differences according to gender, age, ethnicity and presence of hypertension, diabetes and pertinent ECG and echocardiographic var…

MaleTachycardiaBradycardiamedicine.medical_specialty030204 cardiovascular system & hematologyVentricular tachycardiaArticleBrain IschemiaElectrocardiography03 medical and health sciences0302 clinical medicineInternal medicineAtrial FibrillationTachycardia SupraventricularmedicineHumanscardiovascular diseases030212 general & internal medicineStrokeAgedIschemic StrokeAged 80 and overmedicine.diagnostic_testbusiness.industryAtrial fibrillationmedicine.diseaseStrokeHeart failurecardiovascular systemCardiologyFemaleSupraventricular tachycardiamedicine.symptomCardiology and Cardiovascular MedicinebusinessElectrocardiographyInternational Journal of Cardiology
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