Search results for "Aortic sinus"

showing 3 items of 3 documents

Impact of Aortic Diameter Measurements at Three Anatomical Landmarks on Left Ventricular Output Calculation in Neonates

2021

OBJECTIVES To assess reproducibility and accuracy of left ventricular output (LVO) quantifications in neonates, when left ventricular outflow tract diameter (LVOTD) was measured at the hinges of the aortic valve (AV), at the aortic sinus (AS), and at the sinotubular junction (STJ). METHODS This was an observational study. In the first cohort of very preterm neonates, we assessed intraobserver and interobserver repeatability of LVOTD measured at the AV, AS, and STJ and of the corresponding LVO. In the second cohort of older neonates, we compared paired LVO measurements by echo and magnetic resonance imaging (MRI). RESULTS In the first cohort of 48 neonates, mean (standard deviation) weight a…

Observer VariationAortic valveReproducibilityRadiological and Ultrasound Technologymedicine.diagnostic_testbusiness.industryHeart VentriclesLimits of agreementInfant NewbornReproducibility of ResultsMagnetic resonance imagingRepeatabilitymedicine.anatomical_structureEchocardiographyAortic ValveAortic sinusHumansMedicineVentricular outflow tractRadiology Nuclear Medicine and imagingAortic diameterbusinessNuclear medicineJournal of Ultrasound in Medicine
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Extracellular matrix fiber microarchitecture is region-specific in bicuspid aortic valve-associated ascending aortopathy

2016

Abstract Objective Ascending thoracic aortic aneurysm (ATAA) in patients with bicuspid aortic valve (BAV) commonly dilate asymmetrically compared with patients with tricuspid aortic valve (TAV). This discrepancy in aneurysm geometry led us to hypothesize that microarchitectural differences underlie the observed asymmetric dilatation pattern. The purpose of this study was to characterize the microarchitectural distinctions of the extracellular matrix of the 2 phenotypes with a focus on the proportion of radially oriented elastin and collagen fibers in different circumferential aortic regions. Methods Aortic tissue rings were obtained just distal to the sinotubular junction from patients with…

collagenMaleAortic valveHeart Valve DiseasesaortopathyAorta Thoracic030204 cardiovascular system & hematologyAortic aneurysm0302 clinical medicineBicuspid aortic valveBicuspid Aortic Valve DiseaseAortic sinusThoracic aortaAortaAged 80 and overAnatomyMiddle AgedExtracellular MatrixHeart Valve Diseasemedicine.anatomical_structureAortic Valve030220 oncology & carcinogenesiscardiovascular systemCardiologyFemaleCardiology and Cardiovascular MedicineHumanAdultPulmonary and Respiratory Medicinemedicine.medical_specialtybicuspid aortic valveelastinThoracic aortic aneurysmaortic wall microarchitectureArticle03 medical and health sciencesascending aortic aneurysmInternal medicinemedicine.arterymedicineHumansBicuspidCoronary sinusAgedAortaAortic Aneurysm Thoracicbusiness.industrymedicine.diseaseElasticitySurgerybusinessThe Journal of Thoracic and Cardiovascular Surgery
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Anomalous Origin and Course of the Right Coronary Artery

2006

Coronary anomalous origin from the wrong aortic sinus has been thought to be a risk factor for ischemia because of acute takeoff from the aorta and flow between the aorta and the pulmonary artery.1–4 A 30-year-old man suddenly died within an hour of waking. His clinical history revealed no evidence of any disease, and the postmortem toxicological examination was negative. Autopsy ruled out violent or natural noncardiac causes …

medicine.medical_specialtyAortabusiness.industryIschemiaAutopsymedicine.diseasemedicine.anatomical_structureClinical historyPhysiology (medical)Internal medicineRight coronary arterymedicine.arteryAortic sinusAnesthesiacardiovascular systemmedicineCardiologyRisk factorCardiology and Cardiovascular MedicinebusinessCirculation
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