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echocardiographic doppler

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https://www.readbyqxmd.com/read/28631766/-postural-effect-in-patients-with-patent-foramen-ovale-evaluation-of-right-to-left-shunt-with-transcranial-doppler-and-transthoracic-echocardiography-and-correlation-with-arterial-oxygen-saturation
#1
Stefano Lucreziotti, Chiara Debenedetti, Laura Massironi, Antonio Mantero, Fabiano Di Marco, Massimo Chessa, Stefano Carugo
BACKGROUND: Transcranial Doppler echocardiography and transthoracic echocardiography may detect with high accuracy right-to-left shunt (RLS) due to patent foramen ovale (PFO). However, a standardized diagnostic protocol has never been established. It has been suggested that standing or sitting positions may improve sensitivity of transcranial Doppler due to increased LRS in such positions. We aimed to test efficacy of the sitting position in addition to the supine position in the grading of RLS in patients with PFO...
June 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/28631496/echocardiographic-evaluation-of-cardiac-functions-in-newborns-of-mildly-preeclamptic-pregnant-women-within-postnatal-24-48%C3%A2-hours
#2
Kadir Mutlu, Ulas Karadas, Yilmaz Yozgat, Timur Meşe, Mustafa Demirol, Senay Coban, Cem Karadeniz, Rahmi Özdemir, Dilek Orbatu, Utku Karaarslan, Vedide Tavli
The aim of this study is to detect preeclampsia-related cardiac dysfunction within 24-48 hours of delivery in newborns born from preeclamptic mothers. Forty newborns from mildly preeclamptic mothers formed the study group and the control group was formed by 40 healthy newborns. Cardiac function for the groups were evaluated using conventional echocardiography and myocardial performance index (MPI) within the first 24-48 hours of their lifetime and the results of both groups were compared. A significant difference between the groups was observed especially in the PW Doppler MPI measurements (the left ventricle MPI 0...
June 20, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28631208/pulmonary-vein-doppler-patterns-in-infants-with-single-right-ventricle-anomalies-after-initial-staged-palliations
#3
Edward C Kirkpatrick, Jessica Steltzer, Pippa Simpson, Amy Pan, Andrea Dragulescu, Christine B Falkensammer, Sarah Gelehrter, Wyman W Lai, Jami Levine, Stephen Miller, Thomas A Miller, Jay Pruetz, Ritu Sachdeva, Deepika Thacker, Peter Frommelt
The aim of this study was to describe serial changes in echocardiographic Doppler pulmonary vein flow (PVF) patterns in infants with single right ventricle (RV) anomalies enrolled in the Single Ventricle Reconstruction trial. Measurement of PVF peak systolic (S) and diastolic (D) velocities, velocity time integrals (VTI), S/D peak velocity and VTI ratios, and frequency of atrial reversal (Ar) waves were made at three postoperative time points in 261 infants: early post-Norwood, pre-stage II surgery, and 14 months...
June 19, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28625373/high-risk-echocardiographic-features-predict-mortality-in-pulmonary-arterial-hypertension
#4
Christopher Austin, Charles Burger, Garvan Kane, Robert Safford, Joseph Blackshear, Ryan Ung, Jordan Ray, Ali Alsaad, Khadija Alassas, Brian Shapiro
AIMS: Echocardiography is the most common imaging modality for assessment of the right ventricle in patients with pulmonary arterial hypertension (PAH). Echocardiographic parameters were identified as independent risk factors for mortality in the Registry to Evaluate Early and Long-term PAH Disease Management (REVEAL) and other PAH cohorts. We sought to identify readily obtained echocardiographic features associated with PAH survival. METHODS AND RESULTS: Retrospective analysis of 175 patients with Group 1 was performed...
July 2017: American Heart Journal
https://www.readbyqxmd.com/read/28623658/echocardiographic-parameters-of-clinically-normal-geriatric-rhesus-macaques-macaca-mulatta
#5
Yu Ueda, Catherine T Gunther-Harrington, Christina L Cruzen, Jeffrey A Roberts, Joshua A Stern
The goal of this study was to generate reference intervals for echocardiographic variables in a population of clinically normalgeriatric rhesus macaques (Macaca mulatta). To do this, we studied 51 animals (age, 18-29 y; weight, 5.24-17.04 kg). Thenormal values for cardiac indices, including geometry and systolic and diastolic function, were determined by 2D, M-mode,spectral Doppler, and tissue Doppler echocardiography under ketamine hydrochloride sedation. Statistical correlations betweenthe echocardiographic parameters and age, body weight, sex, and heart rate were investigated...
June 16, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28616541/accuracy-of-quantitative-echocardiographic-measures-of-right-ventricular-function-as-compared-to-cardiovascular-magnetic-resonance
#6
Christian R Hamilton-Craig, Kathy Stedman, Ryan Maxwell, Bonita Anderson, Tony Stanton, Jonathan Chan, Akira Yamada, Gregory M Scalia, Darryl J Burstow
BACKGROUND: Many echocardiographic parameters have been proposed to evaluate right ventricular (RV) systolic function. We comprehensively assessed a wide range of quantitative echocardiographic parameters in a single cohort compared with same-day cardiovascular magnetic resonance (CMR). METHODS AND RESULTS: 92 subjects were examined prospectively: Group 1 consisted of 46 healthy controls (21 males, 33.4 ± 11.4 years), Group 2 consisted of 46 patients (20 males, 38...
September 2016: IJC Heart & Vasculature
https://www.readbyqxmd.com/read/28615148/echocardiographic-assessments-of%C3%A2-longitudinal-left-ventricular-function-in%C3%A2-healthy-english-springer-spaniels
#7
D Dickson, R Shave, M Rishniw, M Patteson
OBJECTIVES: To establish reference intervals for echocardiographic measures of longitudinal left ventricular function in adult English Springer spaniel (ESS) dogs. ANIMALS: This study involved 42 healthy adult ESS. METHODS: Animals were prospectively recruited from a general practice population in the United Kingdom. Dogs were examined twice, at least 12 months apart, to exclude dogs with progressive cardiac disease. Mitral annular plane systolic excursion, tissue Doppler imaging mitral annular velocities and two-dimensional speckle-tracking echocardiographic left ventricular longitudinal strain and strain rate were measured...
June 11, 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/28599828/a-doppler-echocardiographic-study-of-the-myocardial-inotropic-response-to-peak-semisupine-exercise-in-healthy-children-development-of-a-simplified-index-of%C3%A2-myocardial%C3%A2-reserve
#8
Anita T Cote, D Kathryn Duff, Carolina A Escudero, Astrid M De Souza, Lindsey D Williams, Raman Gill, M Terri Zadorsky, Kevin C Harris, James E Potts, George G S Sandor
BACKGROUND: Stress echocardiography has been advocated for the detection of abnormal myocardial function and unmasking diminished myocardial reserve in pediatric patients. The aim of this study was to create a simplified index of myocardial reserve, derived from the myocardial inotropic response to peak semisupine exercise in healthy children, and illustrate its applicability in a sample of pediatric oncology patients. METHODS: In this prospective analysis, children (7-18 years of age) with normal cardiac structure and function performed semisupine stress echocardiography to volitional fatigue...
June 6, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28598875/early-hemodynamic-results-in-patients-with-small-aortic-annulus-after-aortic-valve-replacement
#9
Pierre Olivier Dionne, Frédéric Poulin, Denis Bouchard, Philippe Généreux, Reda Ibrahim, Raymond Cartier, Yoan Lamarche, Philippe Demers
OBJECTIVE: Patients with a small aortic annulus (≤21 mm) have an increased risk of patient-prosthesis mismatch after valve replacement. The aim of this study was to compare the early hemodynamic performance of the balloon-expandable transaortic valve implantation Edwards system (SAPIEN) and the sutureless Perceval prostheses. METHODS: Fifty patients underwent transcatheter aortic valve implantation, and 113 patients underwent sutureless aortic valve replacement...
June 8, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/28588630/echocardiographic-assessment-of-myocardial-infarction-comparison-of-a-rat-model-in-two-strains
#10
R Esmaeili, A Sadeghpour, A Darbandi-Azar, K Majidzadeh-A, A Vajhi, M Sadeghizadeh
The purpose of this study was to induce myocardial infarction (MI) and compare the echocardiographic parameters and mortality ratio of Lewis inbred and Wistar outbred strain before and after the procedure to help choose the best one for MI studies. In this study MI was induced in 46 Lewis and 34 Wistar by occlusion of left anterior descending artery (LAD). Doppler, two-dimensional (2-D) and 2-D guided M-mode images were recorded from parasternal long-axis and parasternal short-axis and apical four-chamber views...
2017: Iranian journal of veterinary research
https://www.readbyqxmd.com/read/28579307/tricuspid-annular-plane-systolic-excursion-in-dogs-with-myxomatous-mitral-valve-disease-with-and-without-pulmonary-hypertension
#11
H Poser, M Berlanda, M Monacolli, B Contiero, A Coltro, C Guglielmini
OBJECTIVES: To evaluate tricuspid annular plane systolic excursion (TAPSE) in dogs with myxomatous mitral valve disease (MMVD) with or without pulmonary hypertension (PH) and to study the correlations with clinical and echocardiographic parameters. ANIMALS: The study population included 99 dogs with MMVD and tricuspid regurgitation. METHODS: This is a prospective clinical study. All dogs received a transthoracic echocardiographic evaluation, including 2D, M-mode, echo-Doppler, and tissue Doppler measurements...
June 1, 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/28577669/diastolic-dysfunction-revisited-a-new-feasible-and-unambiguous-echocardiographic-classification-predicts-major-cardiovascular-events
#12
Niklas Dyrby Johansen, Tor Biering-Sørensen, Jan Skov Jensen, Rasmus Mogelvang
BACKGROUND: Echocardiographic classification of DDF has been widely discussed. The aim of this study was to investigate the independent prognostic value of established echocardiographic measures in a community-based population and create a new classification of DDF. METHODS: Within the Copenhagen City Heart Study, a prospective, community-based study, 1851 participants were examined by echocardiography including Tissue Doppler Imaging (TDI) in 2001 to 2003 and followed with regard to MACE (median, 10...
June 2017: American Heart Journal
https://www.readbyqxmd.com/read/28573754/mitral-regurgitation-severity-and-left-ventricular-systolic-dimension-predict-survival-in-young-cavalier-king-charles-spaniels
#13
M J Reimann, J E Møller, J Häggström, T Martinussen, S S C Zatrazemi, L Svanholm, L B M Nielsen, H D Pedersen, L H Olsen
BACKGROUND: Development and progression of myxomatous mitral valve disease (MMVD) in dogs are difficult to predict. Identification at a young age of dogs at high risk of adverse outcome in the future is desirable. HYPOTHESIS/OBJECTIVES: To study the predictive value of selected clinical and echocardiographic characteristics associated with MMVD obtained at a young age for prediction of long-term cardiac and all-cause mortality in Cavalier King Charles Spaniels (CKCS)...
June 1, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28567705/diagnostic-value-of-doppler-echocardiography-for-identifying-hemodynamic-significant-pulmonary-valve-regurgitation-in-tetralogy-of-fallot-comparison-with-cardiac-mri
#14
Niek E G Beurskens, Thomas M Gorter, Petronella G Pieper, Elke S Hoendermis, Beatrijs Bartelds, Tjark Ebels, Rolf M F Berger, Tineke P Willems, Joost P van Melle
Quantification of pulmonary regurgitation (PR) is essential in the management of patients with repaired tetralogy of Fallot (TOF). We sought to evaluate the accuracy of first-line Doppler echocardiography in comparison with cardiac magnetic resonance imaging (MRI) to identify hemodynamic significant PR. Paired cardiac MRI and echocardiographic studies (n = 97) in patients with repaired TOF were retrospectively analyzed. Pressure half time (PHT) and pulmonary regurgitation index (PRi) were measured using continuous wave Doppler...
May 31, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28551092/speckle-tracking-echocardiography-and-tissue-doppler-imaging-reveal-beneficial-effect-of-pharmacotherapy-in-hypertensives-with-asymptomatic-left-ventricular-dysfunction
#15
Beata Uziębło-Życzkowska, Paweł Krzesiński, Grzegorz Gielerak, Andrzej Skrobowski
Global longitudinal strain (GLS), assessed by speckle tracking echocardiography, is a sensitive marker of myocardial systolic function and an independent predictor of cardiovascular outcomes. The aim of this study was to investigate the effect of hypotensive treatment on GLS and evaluate the relation between change in GLS and left ventricular (LV) diastolic function. In a group of 125 hypertensive subjects, without any symptoms of heart failure, the detailed echocardiographic assessment of LV systolic and diastolic function was performed before and after 12 months of hypotensive treatment...
May 8, 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28550178/severity-of-structural-and-functional-right-ventricular-remodeling-depends-on-training-load-in-an-experimental-model-of-endurance-exercise
#16
Maria Sanz-de la Garza, Cira Rubies, Montserrat Batlle, Bart Bijnens, Lluís Mont, Marta Sitges, Eduard Guasch
An arrhythmogenic right ventricle (RV) remodeling has been reported in response to regular training, but it remains unclear how exercise intensity affects the presence and extent of such remodeling. We aimed at assessing the relationship between RV remodeling and exercise load in a long-term endurance training model. Wistar rats were conditioned to run at moderate (MOD, 45 min, 30cm/s) or intense (INT, 60 min, 60cm/s) workloads for 16 weeks; sedentary rats (SED) served as controls. Cardiac remodeling was assessed with standard echocardiographic and tissue Doppler techniques, sensor-tip pressure catheters and pressure-volume loop analyses...
May 26, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28547004/ocular-arterial-occlusive-disorders-and-carotid-artery-disease
#17
Sohan Singh Hayreh, M Bridget Zimmerman
OBJECTIVE: To compare prevalence of carotid artery disease and its various types of lesions in different types of ocular arterial occlusive disorders. DESIGN: Cohort study. SUBJECTS: 614 consecutive patients (728 eyes) with ocular arterial occlusive disorders. METHODS: At first visit, all patients had a detailed ophthalmic and medical history, comprehensive ophthalmic evaluation, and carotid artery evaluation (by Doppler/angiography) on the side of ocular arterial occlusion, and echocardiography...
January 2017: Ophthalmology retina
https://www.readbyqxmd.com/read/28544830/assessment-of-contributors-of-aortopathy-and-subclinical-left-ventricular-dysfunction-in-normally-functioning-bicuspid-aortic-valves
#18
Kamil Tuluce, Selcen Yakar Tuluce, Ersin Cagri Simsek, Serdar Bayata, Cem Nazli
BACKGROUND: Left ventricular (LV) function and the dimensions of aortic valves from normally functioning bicuspid aortic valve (BAV) patients were compared with those of healthy control patients. A comparison between patients with antero-posterior BAV (BAV-AP) or right-left BAV (BAV-RL) was also performed, and the determinants of aortopathy and LV function were investigated. METHODS: Sixty-eight patients with aortic velocities <2 m/s and trivial or mild aortic regurgitation were included in the study...
January 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28530211/-pulse-wave-velocity-as-an-early-marker-of-diastolic-heart-failure-in-patients-with-hypertension
#19
Beata Moczulska, Monika Kubiak, Anna Bryczkowska, Ewa Malinowska
According to the WHO, hypertension is one of the major causes of death worldwide. It leads to a number of severe complications. Diastolic heart failure, that is heart failure with preserved ejection fraction (HFPEF), is especially common. New, but simple, indices for the early detection of patients who have not yet developed complications or are in their early developmental stages are still searched for. AIM: The aim of this study is to examine the correlation between pulse wave velocity (PWV) and markers of diastolic heart failure (DHF) assessed in echocardiography in patients with hypertension and no symptoms of heart failure...
April 21, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28528655/pulmonary-flow-as-an-improved-method-for-determining-cardiac-output-in-mice-after-myocardial-infarction
#20
Mathew J Platt, Jason S Huber, Keith R Brunt, Jeremy A Simpson
BACKGROUND: Echocardiography is a valuable noninvasive technique to estimate cardiac output (CO) from the left ventricle (LV) not only in clinical practice but also in small-animal experiments. CO is used to grade cardiac function and is especially important when investigating cardiac injury (e.g., myocardial infarction [MI]). Critically, MI deforms the LV, invalidating the assumptions fundamental to calculating of cardiac volumes directly from the LV. Thus, the purpose of this study was to determine if Doppler-derived blood flow through the pulmonary trunk (pulmonary flow [PF]) was an improved method over conventional LV-dependent echocardiography to accurately determine CO after MI...
June 2017: Journal of the American Society of Echocardiography
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