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echocardiographic doppler

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https://www.readbyqxmd.com/read/28229822/myocardial-performance-index-in-active-and-inactive-paediatric-systemic-lupus-erythematosus
#1
Anant Khositseth, Wasana Prangwatanagul, Kanchana Tangnararatchakit, Soamarat Vilaiyuk, Nantawan Su-Angka
OBJECTIVES: To evaluate cardiac structure and function in paediatric SLE patients without clinical evidence of cardiovascular disease in active and inactive diseases. METHODS: Patients aged ≤20 years who fulfilled the diagnostic criteria of active SLE underwent transthoracic echocardiography to evaluate cardiac structure and function, and were then followed up echocardiographically every 3-4 months until SLE disease was inactive. Patients with heart failure, myocarditis, pericarditis, endocarditis, coronary artery disease, or abnormal structural heart disease were excluded...
February 3, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28229480/echocardiographic-evaluation-of-right-ventricular-function-in-preterm-infants-with-bronchopulmonary-dysplasia
#2
Renata Bokiniec, Paweł Własienko, Maria Borszewska-Kornacka, Joanna Szymkiewicz-Dangel
AIM: To evaluate right ventricular function in preterm infants with and without bronchopulmonary dysplasia. METHODS: Eighty-nine preterm infants (<32 weeks) were divided into three groups: (1) no-bronchopulmonary dysplasia (n=32); (2) mild-bronchopulmonary dysplasia (n=35); (3) severe-bronchopulmonary dysplasia (n=15). Right ventricular echocardiographic parameters included the following: (1) pulsed-wave Doppler through the tricuspid valve (E/A ratio), pulmonary artery acceleration time, right ventricular ejection time, right ventricular velocity-time integral; (2) tissue Doppler measurements of myocardial velocities and atrioventricular conduction times; (3) pulsed-wave Doppler and tissue Doppler evaluation of myocardial performance index and E/E' ratio; and (4) M-mode detection of right ventricular end-diastolic wall diameter...
February 23, 2017: Echocardiography
https://www.readbyqxmd.com/read/28228313/significant-intra-valvular-pressure-loss-across-epic-supra-and-perimount-magna-supra-annular-designed-aortic-bioprostheses-in-patients-with-normal-aortic-size
#3
Jagdish C Mohan, Vishwas Mohan, Madhu Shukla, Arvind Sethi
Doppler-derived trans-prosthetic gradients are higher and the estimated effective valve area is smaller than the catheter-derived and directly measured hemodynamic values, mostly due to pressure recovery phenomenon. Pressure recovery to a varying extent is common to all prosthetic heart valves including bioprostheses. Pressure recovery-related differences are usually small except in patients with bileaflet metallic prosthesis, wherein high-pressure local jets across central orifice have been documented since long back and also in patients with narrow aortic root...
January 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28220275/open-source-vendor-independent-automated-multi-beat-tissue-doppler-echocardiography-analysis
#4
Niti M Dhutia, Massoud Zolgharni, Michael Mielewczik, Madalina Negoita, Stefania Sacchi, Karikaran Manoharan, Darrel P Francis, Graham D Cole
Current guidelines for measuring cardiac function by tissue Doppler recommend using multiple beats, but this has a time cost for human operators. We present an open-source, vendor-independent, drag-and-drop software capable of automating the measurement process. A database of ~8000 tissue Doppler beats (48 patients) from the septal and lateral annuli were analyzed by three expert echocardiographers. We developed an intensity- and gradient-based automated algorithm to measure tissue Doppler velocities. We tested its performance against manual measurements from the expert human operators...
February 20, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28216111/anatomical-regurgitant-orifice-detection-and-quantification-from-3-d-echocardiographic-images
#5
Miguel Sotaquirá, Mauro Pepi, Gloria Tamborini, Enrico G Caiani
The vena contracta and effective regurgitant orifice area (EROA) are currently used for the clinical assessment of mitral regurgitation (MR) from 2-D color Doppler imaging. In addition to being highly user dependent and having low repeatability, these methods do not represent accurately the anatomic regurgitant orifice (ARO), which affects the adequate assessment of MR patients. We propose a novel method for semi-automatic detection and quantitative assessment of the 3-D ARO shape from 3-D transesophageal echocardiographic images...
February 16, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28204860/left-ventricular-systolic-dysfunction-during-septic-shock-the-role-of-loading-conditions
#6
Florence Boissier, Keyvan Razazi, Aurélien Seemann, Alexandre Bedet, Arnaud W Thille, Nicolas de Prost, Pascal Lim, Christian Brun-Buisson, Armand Mekontso Dessap
PURPOSE: The clinical significance of septic myocardial dysfunction is controversial, a fact that may be explained by the influence of loading conditions. Many indices may be useful to characterize cardiac function during septic shock, but their feasibility and physiological coherence in the clinical setting are unknown. METHODS: Hemodynamic and echocardiographic data with tissue Doppler and speckle tracking were prospectively recorded on the first 3 days of human septic shock...
February 15, 2017: Intensive Care Medicine
https://www.readbyqxmd.com/read/28198938/left-atrial-deformation-analysis-in-patients-with-corrected-tetralogy-of-fallot-by-3d-speckle-tracking-echocardiography-from-the-magyar-path-study
#7
Kálmán Havasi, Péter Domsik, Anita Kalapos, Jackie S McGhie, Jolien W Roos-Hesselink, Tamás Forster, Attila Nemes
Background: Three-dimensional (3D) echocardiography coupled with speckle-tracking echocardiographic (STE) capability is a novel methodology which has been demontrated to be useful for the assessment of left atrial (LA) volumes and functional properties. There is increased scientific interest on myocardial deformation analysis in adult patients with corrected tetralogy of Fallot (cTOF). Objectives: To compare LA volumes, volume-based functional properties and strain parameters between cTOF patients and age- and gender-matched healthy controls...
February 13, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28197645/subclinical-decrease-in-myocardial-function-in-asymptomatic-infants-of-diabetic-mothers-a-tissue-doppler-study
#8
Jenny E Zablah, Dorota Gruber, Guillaume Stoffels, Estefania G Cabezas, Denise A Hayes
Infants of diabetic mothers (IDMs) with hypertrophic cardiomyopathy are recognized to have impaired myocardial performance, but less is known about ventricular function in IDMs without hypertrophy. We hypothesized that in asymptomatic newborns with normal two-dimensional echocardiographic evaluations, pulsed wave tissue Doppler imaging (TDI) would suggest a subclinical decrease in the cardiac function of IDMs compared to infants of non-diabetics (nIDMs). This is a retrospective cohort study of asymptomatic neonates ≥36 weeks gestation, at 0-7 days of life, with normal standard echocardiograms...
February 14, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28197282/fragmented-qrs-as-a-marker-of-electrical-dyssynchrony-to-predict-inter-ventricular-conduction-defect-by-subsequent-echocardiographic-assessment-in-symptomatic-patients-of-non-ischemic-dilated-cardiomyopathy
#9
Santosh Kumar Sinha, Kush Bhagat, Mohammad Asif, Karandeep Singh, Mohit Sachan, Vikas Mishra, Nasar Afdaali, Mukesh Jitendra Jha, Ashutosh Kumar, Shravan Singh, Rupesh Sinha, Dibbendhu Khanra, Ramesh Thakur, Chandra Mohan Varma, Vinay Krishna, Umeshwar Pandey
BACKGROUND: Left ventricular (LV) dyssynchrony frequently occurs in patients with heart failure (HF). QRS ≥ 120 ms is a surrogate marker of electrical dyssynchrony, which occurs in only 30% of HF patients. In contrary, in those with normal QRS (nQRS) duration, LV dyssynchrony has been reported in 20-50%. This study was carried out to investigate the role of fragmented QRS (fQRS) on the surface electrocardiography (ECG) as a marker of electrical dyssynchrony to predict the presence of significant intraventricular dyssynchrony (IVD) by subsequent echocardiographic assessment...
August 2016: Cardiology Research
https://www.readbyqxmd.com/read/28191526/decreased-regional-left-ventricular-myocardial-strain-in-type-1-diabetic-children-a-first-sign-of-diabetic-cardiomyopathy
#10
Amir Hodzic, Virginie Ribault, Pascale Maragnes, Paul Milliez, Eric Saloux, Fabien Labombarda
BACKGROUND AND OBJECTIVES: Type 1 diabetes is a major cardiovascular risk factor associated with an excess of mortality in young adults due to premature cardiovascular events, which includes heart failure. The relation between type 1 diabetes and cardiac structure and function in children was poorly documented. Our study investigates (1) whether type 1 diabetic children have echocardiographic signs of subclinical cardiac dysfunction assessed by tissue Doppler strain and (2) whether state of metabolic control and diabetes duration have any influence on the cardiac event...
June 1, 2016: Journal of Translational Internal Medicine
https://www.readbyqxmd.com/read/28183438/cardiac-imaging-for-assessing-low-gradient-severe-aortic-stenosis
#11
REVIEW
Marie-Annick Clavel, Ian G Burwash, Philippe Pibarot
Up to 40% of patients with aortic stenosis (AS) harbor discordant Doppler-echocardiographic findings, the most common of which is the presence of a small aortic valve area (≤1.0 cm(2)) suggesting severe AS, but a low gradient (<40 mm Hg) suggesting nonsevere AS. The purpose of this paper is to present the role of multimodality imaging in the diagnostic and therapeutic management of this challenging entity referred to as low-gradient AS. Doppler-echocardiography is critical to determine the subtype of low-gradient AS: that is, classical low-flow, paradoxical low-flow, or normal-flow...
February 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28180202/applicability-and-technical-aspects-of-two-dimensional-ultrasonography-for-assessment-of-fetal-heart-function
#12
REVIEW
Nathalie Jeanne Bravo-Valenzuela, Alberto Borges Peixoto, Luciano Marcondes Nardozza, Alex Sandro Souza, Edward Araujo Júnior
In recent years, fetal echocardiography has been used for the screening and diagnosis of anatomical heart defects and for the detailed study of fetal cardiac function. This method is characterized by its easy implementation and good reproducibility, allowing the diagnosis of myocardial dysfunction even in its subclinical phase. The functional assessment of the fetal heart should be routinely performed in fetuses with congenital heart disease and those without anatomical malformation. Several extra-cardiac conditions may alter fetal cardiac function, by increased placental resistance, volume overload or hyperdynamic circulation, compression, or maternal systemic disease with involvement of the fetal myocardium...
January 31, 2017: Medical Ultrasonography
https://www.readbyqxmd.com/read/28162963/assessment-of-the-atrial-electromechanical-properties-of-patients-with-human-immunodeficiency-virus
#13
Ahmet G Ertem, Çağrı Yayla, Burak Açar, Sefa Ünal, Mehmet A Erdol, Meliha Ç Sonmezer, Esra Kaya Kiliç, Çiğdem Ataman Hatipoglu, Serkan Gokaslan, Habibe Kafes, Mehmet K Akboga, Pelin Aladag, Koray Demirtas, Sinan Aydogdu
The relationship between atrial fibrillation and human immunodeficiency virus (HIV) infection was evaluated. Electro-echocardiographic methods can be used to predict the development of atrial fibrillation (AF). In this study, we aimed to investigate the atrial electromechanical delay (AEMD) parameters of HIV (+) patients. Forty-two HIV (+) patients and 40 HIV (-) healthy volunteers were prospectively enrolled in this study. The electromechanical properties of the subjects' atria were evaluated with tissue Doppler imaging...
February 2, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28140649/effects-of-a-combination-of-acepromazine-maleate-and-butorphanol-tartrate-on-conventional-and-two-dimensional-speckle-tracking-echocardiography-in-healthy-dogs
#14
Giorgia Santarelli, Jesús Talavera López, Josefa Fernández Del Palacio
OBJECTIVE To determine effects of a combination of acepromazine maleate and butorphanol tartrate on conventional echocardiographic variables and on strain values obtained by use of 2-D speckle tracking echocardiography (STE) in healthy dogs. ANIMALS 18 healthy medium- and large-size adult dogs. PROCEDURES Transthoracic echocardiographic examination (2-D, M-mode, color flow, spectral Doppler, and tissue Doppler ultrasonography) and high-definition oscillometric blood pressure measurement were performed before and after dogs were sedated by IM administration of a combination of acepromazine (0...
February 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28132404/right-ventricular-function-during-acute-exacerbation-of-severe-equine-asthma
#15
A Decloedt, H Borowicz, M Slowikowska, K Chiers, G van Loon, A Niedzwiedz
BACKGROUND: Pulmonary hypertension has been described in horses with severe equine asthma but its effect on the right ventricle has not been fully elucidated. OBJECTIVES: To evaluate right ventricular structure and function after a one-week period of pulmonary hypertension secondary to acute exacerbation of severe equine asthma. STUDY DESIGN: Prospective study. METHODS: A clinical episode of severe equine asthma was induced experimentally in six susceptible horses...
January 28, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28130861/an-assessment-of-left-atrial-function-in-patients-with-hypertrophic-obstructive-cardiomyopathy-before-and-1%C3%A2-year-after-septal-ablation-by-two-dimensional-speckle-tracking-echocardiography
#16
Hui Fang, Hailin Tang, Peng Li, Li Xiong, Gongpai Hu, Li Li, Yonghong Yu, Bowen Zhao
OBJECTIVE: The objective of this study was to assess left atrial (LA) function with two-dimensional speckle tracking echocardiography (2DSTE) in addition to standard echocardiographic assessments in patients with hypertrophic obstructive cardiomyopathy (HOCM) before and 1 year after septal ablation (SA). METHODS: The study included 31 patients with HOCM, who underwent SA. Each patient with HOCM underwent a complete two-dimensional transthoracic echocardiography before and 1 year after the SA...
January 28, 2017: Echocardiography
https://www.readbyqxmd.com/read/28127033/advanced-imaging-in-valvular-heart-disease
#17
REVIEW
Jeroen J Bax, Victoria Delgado
Although echocardiography remains the mainstay imaging technique for the evaluation of patients with valvular heart disease (VHD), innovations in noninvasive imaging in the past few years have provided new insights into the pathophysiology and quantification of VHD, early detection of left ventricular (LV) dysfunction, and advanced prognostic assessment. The severity grading of valve dysfunction has been refined with the use of Doppler echocardiography, cardiac magnetic resonance (CMR), and CT imaging. LV ejection fraction remains an important criterion when deciding whether patients should be referred for surgery...
January 27, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28126497/acute-effects-of-multisite-biventricular-pacing-on-dyssynchrony-and-hemodynamics-in-canines-with-heart-failure
#18
Qiong Qiu, Li Yang, Jing-Ting Mai, Ying Yang, Yong Xie, Yang-Xin Chen, Jing-Feng Wang
BACKGROUND: Multisite biventricular pacing(MSP) has been proposed as an alternative strategy to improve the efficiency of conventional biventricular pacing(BVP), but its utility remains unclear. This study sought to investigate whether MSP induced better synchrony and hemodynamic effects in canines with heart failure. METHODS AND RESULTS: After 3 weeks' rapid right ventricular pacing(RVP), 7 canines were sutured with 4 left ventricular(LV) leads on anterior, lateral, posterior and apical wall, and followed by MSP and BVP...
January 23, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28123309/improvement-of-impaired-diastolic-left-ventricular-function-after-diet-induced-weight-reduction-in-severe-obesity
#19
Sevda Karimian, Juergen Stein, Boris Bauer, Claudius Teupe
BACKGROUND/OBJECTIVES: Obesity is independently associated with left ventricular (LV) diastolic dysfunction and altered cardiac morphology. Morbidity and mortality in patients with diastolic dysfunction are similar to values observed in patients with systolic heart failure. We hypothesized that dysfunctional cardiac responses in people with obesity are reversible after weight loss. Thus, we studied the effect of dietary weight reduction on LV diastolic function as well as on cardiac structure using transthoracic echocardiography and tissue Doppler imaging (TDI)...
2017: Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy
https://www.readbyqxmd.com/read/28109936/precision-phenotyping-in-heart-failure-and-pattern-clustering-of-ultrasound-data-for-the-assessment-of-diastolic-dysfunction
#20
Alaa Mabrouk Salem Omar, Sukrit Narula, Mohamed Ahmed Abdel Rahman, Gianni Pedrizzetti, Hala Raslan, Osama Rifaie, Jagat Narula, Partho P Sengupta
OBJECTIVES: The aim of this study was to investigate whether cluster analysis of left atrial and left ventricular (LV) mechanical deformation parameters provide sufficient information for Doppler-independent assessment of LV diastolic function. BACKGROUND: Medical imaging produces substantial phenotyping data, and superior computational analyses could allow automated classification of repetitive patterns into patient groups with similar behavior. METHODS: The authors performed a cluster analysis and developed a model of LV diastolic function from an initial exploratory cohort of 130 patients that was subsequently tested in a prospective cohort of 44 patients undergoing cardiac catheterization...
January 11, 2017: JACC. Cardiovascular Imaging
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