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Showing 1 to 14 of 14 for “"Doppler echocardiography"”.
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Determinants of left ventricular mass as measured by Doppler echocardiography in pre-adolescents
… in left ventricular mass as measured by Doppler echocardiography in children. Fourteen boys (10.3 ± 0.3 years of age) and 1 1 girls (10.5 ± 0.4 years of age) participated in the study. Height and weight were measured, and relative body fat was determined from the measurement of skinfold …
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Η ΣΥΜΒΟΛΗ ΤΟΥ ΥΠΕΡΗΧΟΓΡΑΦΗΜΑΤΟΣ ΔΥΟ-ΔΙΑΣΤΑΣΕΩΝ ΚΑΙ DOPPLER ΣΤΗ ΔΙΑΓΝΩΣΗ ΚΑΙ ΚΑΘΟΔΗΓΗΣΗ ΤΗΣ ΚΟΛΠΙΚΗΣ ΔΙΑΦΡΑΓΜΑΤΟΣΤΟΜΙΑΣ ΜΕ ΜΠΑΛΟΝΙ ΣΕ ΝΕΟΓΝΑ ΜΕ ΑΠΛΗ ΜΕΤΑΘΕΣΗ ΤΩΝ ΜΕΓΑΛΩΝ ΑΡΤΗΡΙΩΝ
TWO-DIMENSIONAL AND DOPPLER ECHOCARDIOGRAPHY WAS USED AS THE SOLE IMAGING DEVICE FOR THE DIAGNOSTIC EVALUATION AND PERFORMANCE OF BALLOON ATRIAL SEPTOSTOMY IN20 NEONATES, AGED FROM 1 TO 4 DAYS, WITH SIMPLE TRANSPOSITION OF THE GREAT ARTERIES. IN 15 NEONATES, BALLOON ATRIAL SEPTOSTOMY WAS PERFORMED …
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Papildomas adenozino vaidmuo mažinant infarkto dydį ir išsaugant kairiojo skilvelio funkciją pacientams, sergantiems ūminiu miokardo infarktu /
… emission computer tomography, transthoracic Doppler echocardiography, dobutamine stress echocardiography) it was estimated, that adenosine preserves myocardial contractility and coronary flow reserve during the acute phase of myocardial infarction, reduces the final infarct size, improves the …
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Left Ventricular Long Axis Dynamics in Pathological and Physiological Left Ventricular Hypertrophy
… such oscillations may be measured using tissue Doppler echocardiography (TDE). During systole the annulus descends and during early diastole (E<sub>TDE</sub>) and atrial systole (A<sub>TDE</sub>) it ascends. This thesis examined whether changes in the velocity of the annulus in each of these …
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Responding to resynchronization : improving the impact of biventricular pacing in the management of chronic heart failure
… 3 investigates the role of pulsed-wave tissue Doppler echocardiography as a means of assessing myocardial dyssynchrony in a prospective group of patients referred for CRT. It is shown that the degree of dyssynchrony will differ depending on the model employed to determine it. Chapter 4 explores …
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Accuracy of Noninvasively Determined Pulmonary Artery Pressure in Dogs With Myxomatous Mitral Valve Disease
… arterial pressure is routinely estimated by Doppler echocardiography applying the simplified Bernoulli equation to the velocity of tricuspid regurgitation (sPAP_D). The accuracy of this estimation is unknown in dogs with MMVD, but experimental studies suggest that the method is imperfect. In …
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Use of fluorescent micropsheres to measure coronary flow reserve in rat animal model
… reserve (2.2) was measured in 6 rats using Doppler echocardiography. The consistency of these results suggests that the procedures developed for fluorescent microspheres lead to repeatable and reliable measurement of coronary blood flow in rats.
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Adenylyl Cyclase Type 9: Regulation and Cardiac Function
… a significant bradycardia and alterations in Doppler echocardiography indicative of grade 1 diastolic dysfunction with preserved ejection fraction. Identification of novel AC9 binding partners, including the small heat shock protein 20 (Hsp20) and Popeye domain containing (Popdc) proteins may …
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Advanced Echocardiographic Imaging In Dogs With Myxomatous Mitral Valve Disease
… use real time three-dimensional transthoracic echocardiography (RT-3DTTE), and an offline software for MV analysis to evaluate canine MV. We described that the technique was feasible and repeatable, we evaluated the morphology of the MV in healthy dogs, and we provided reference values for MV …
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Impact of Glycemic Therapy on Myocardial Sympathetic Neuronal Integrity and Left Ventricular Function in Insulin Resistant Diabetic Rats: Serial Evaluation by 11C-meta-Hydroxyephedrine Positron Emission Tomography
… was evaluated longitudinally by [11C]HED PET. Echocardiography measures of systolic and diastolic function were completed at serial timepoints. Plasma NE levels were evaluated serially and expression of NET and β-adrenoceptors were tested at the terminal endpoints. Diabetic rats exhibited a …
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The Effect of Preload Reduction on Parameters to Evaluate Left Ventricular Diastolic Function
BACKGROUND AND OBJECTIVES: The pulsed wave Doppler echocardiography in the mitral inflow is known to be affected by several factors, such as the loading condition. The mitral annulus velocity and early diastolic flow propagation velocity(Vp) are known to be relatively load independent. Recently, …
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Characteristics of cardiovascular dysfunction and pulminory hypertension in patients with sickle cell disease
… is controversial; clinical studies using echocardiography have suggested<br/>PHT to be highly prevalent and a major determinant of outcome. The<br/>contribution of cardiac and endothelial dysfunction to SCD also remains poorly<br/>understood.<br/>Aims<br/>(1) To characterise cardiac …
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The Development of a Patient-Specific, Open Source Computational Fluid Dynamics Tool to Comprehensively and Innovatively Study Coarctation of the Aorta in a Limited Resource Clinical Context
… order to do so, a protocol for the collection of doppler echocardiography (echo) and CTA data is proposed. The method for processing the echo data and manually segmenting the CTA data is presented and evaluated. The open source, OpenFOAM code is used to simulate a patient-specific CoA case as well …
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New methods for quantifying the synchrony of contraction and relaxation in the heart
… The first method improved upon existing tissue-Doppler based echocardiographic diagnosis of dyssynchrony by utilizing a cross-correlation (XC) function to quantify dyssynchrony during post-processing as opposed to the quantitatively simplistic time-to-peak analysis that is currently utilized. …