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https://www.readbyqxmd.com/read/28634695/assessment-of-early-diastolic-intraventricular-pressure-gradient-in-the-left-ventricle-among-patients-with-repaired-tetralogy-of-fallot
#1
Maki Kobayashi, Ken Takahashi, Mariko Yamada, Kana Yazaki, Kotoko Matsui, Noboru Tanaka, Sachie Shigemitsu, Katsumi Akimoto, Masahiko Kishiro, Keisuke Nakanishi, Shiori Kawasaki, Masaki Nii, Keiichi Itatani, Toshiaki Shimizu
Assessment of left ventricular (LV) dysfunction is vital in patients with repaired tetralogy of Fallot (rTOF). The early diastolic intraventricular pressure gradient (IVPG) in the LV plays an important role in diastolic function. IVPG is calculated as the intraventricular pressure difference divided by the LV length, which allows to account for differences in LV size and therefore calculate IVPG in children. We aimed to investigate the mechanisms of LV diastolic dysfunction by measuring mid-to-apical IVPG as an indicator of the active suction force sucking blood from the left atrium into the LV...
June 20, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28623658/echocardiographic-parameters-of-clinically-normal-geriatric-rhesus-macaques-macaca-mulatta
#2
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/28613097/dynamic-muscle-ultrasound-identifies-upper-motor-neuron-involvement-in-amyotrophic-lateral-sclerosis
#3
Yu-Ichi Noto, Neil Simon, Kazumoto Shibuya, José M Matamala, Thanuja Dharmadasa, Matthew C Kiernan
OBJECTIVE: The aim of the present study was to elucidate the pattern of change in bulbar muscles using ultrasound in patients diagnosed with amyotrophic lateral sclerosis (ALS). METHODS: Changes in the mylohyoid and geniohyoid muscle complex (mylohyoid-geniohyoid-muscle-complex) thickness were recorded while swallowing 5 ml of water using M-mode ultrasound in 30 ALS patients compared to 20 healthy controls. The ratio of mylohyoid-geniohyoid-muscle-complex thickness as determined by the maximum thickness of mylohyoid-geniohyoid-muscle-complex during swallowing divided by thickness at rest, was compared between ALS patients and controls, with the correlation between thickness ratio, echogenicity and clinical parameters assessed...
February 10, 2017: Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration
https://www.readbyqxmd.com/read/28599830/normative-left-ventricular-m-mode-echocardiographic-values-in-preterm-infants-up-to-2-kg
#4
Swati Choudhry, Amber Salter, Tyler W Cunningham, Philip T Levy, Hoang H Nguyen, Michael Wallendorf, Gautam K Singh, Mark C Johnson
BACKGROUND: There is a paucity of normative echocardiographic data in preterm infants. The objectives of this study were to (1) derive left ventricular (LV) M-mode reference values and (2) compare the performance of alternative methods of indexing LV dimensions and LV mass (LVM) in preterm infants. The authors propose that indexing LV measures to weight in preterm infants is a practical approach given the variability associated with tape-measure length measurement in infants. METHODS: In this retrospective study, LV M-mode echocardiographic measurements of end-diastolic interventricular septal thickness, end-diastolic LV posterior wall thickness, LV end-diastolic and end-systolic dimensions, LVM, and relative wall thickness were remeasured in 503 hospitalized preterm infants ≤2 kg (372 from a retrospective sample and 131 prospectively enrolled)...
June 6, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28588630/echocardiographic-assessment-of-myocardial-infarction-comparison-of-a-rat-model-in-two-strains
#5
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/28579791/color-m-mode-echocardiography-derived-propagation-velocity-of-descending-aorta-decreases-with-aging
#6
Mehmet Yaman, Uğur Arslan, Adil Bayramoğlu, Osman Bektaş, Ahmet Karataş
BACKGROUND: Arterial stiffness (AS) can be determined by some noninvasive tests such as pulse wave velocity (PWV). Atherosclerosis is also detectable by some ultrasonographic techniques such as color M-mode-derived propagation velocity measured along the origin of the descending aorta (AVP). AIM: The aim of the study was to find out a possible relationship between atherosclerosis and AVP and whether AVP can be used as a parameter of AS. MATERIALS AND METHODS: The study group was composed of 134 people from routine screening examination who were ≥40 years old, completely healthy, and without any known disease and use of any drug...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28579307/tricuspid-annular-plane-systolic-excursion-in-dogs-with-myxomatous-mitral-valve-disease-with-and-without-pulmonary-hypertension
#7
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/28576478/intracardiac-echocardiography-use-during-transcatheter-device-closure-of-a-patent-ductus-arteriosus-in-a-dog
#8
V Chetboul, C Damoiseaux, L Behr, A Morlet, N S Moise, V Gouni, M Lavennes, J-L Pouchelon, F Laborde, N Borenstein
Intracardiac echocardiography (ICE) is used in humans for percutaneous interventional procedures, such as transcatheter device closures. Intracardiac echocardiography provides high-resolution imaging of cardiac structures with two-dimensional, M-mode, Doppler, and also three-dimensional modalities. The present report describes application of ICE during transcatheter occlusion of patent ductus arteriosus using a canine ductal occluder in a dog for which transesophageal echocardiography could not provide an optimal acoustic window...
May 30, 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/28575228/right-ventricular-outflow-tract-dimensions-in-arrhythmogenic-right-ventricular-cardiomyopathy-dysplasia-a-multicentre-study-comparing-echocardiography-and-cardiovascular-magnetic-resonance
#9
Alexander Gotschy, Ardan M Saguner, Markus Niemann, Sandra Hamada, Deniz Akdis, Ji-Na Yoon, Elena V Parmon, Victoria Delgado, Jeroen J Bax, Sebastian Kozerke, Corinna Brunckhorst, Firat Duru, Felix C Tanner, Robert Manka
Aims: Right ventricular outflow tract (RVOT) dilation is one of the echocardiographic criteria in the 2010 revised Task Force Criteria (TFC) of arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D). However, studies comparing cardiac magnetic resonance (CMR) and transthoracic echocardiography (TTE) suggest a lower diagnostic accuracy of TTE due to its operator dependence and limited reproducibility. The goal of this study was to compare the 2010 TFC measures of RVOT dilation with three alternative measures for improving the echocardiographic assessment of RVOT in patients with ARVC/D...
May 26, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28571079/fetal-heart-function-by-tricuspid-annular-plane-systolic-excursion-and-ventricular-shortening-fraction-using-stic-m-mode-reference-ranges-and-validation
#10
Giselle Darahem Tedesco, Marilim de Souza Bezerra, Fernanda Silveira Bello Barros, Wellington P Martins, Luciano Marcondes Machado Nardozza, Rosiane Mattar, Antonio Fernandes Moron, Liliam Cristine Rolo, Edward Araujo Júnior
No abstract text is available yet for this article.
June 1, 2017: American Journal of Perinatology
https://www.readbyqxmd.com/read/28557070/color-and-power-doppler-sonography-for-pneumothorax-detection
#11
John R Richards, Julianne M Awrey, Sarah E Medeiros, John P McGahan
The use of B- and M-mode sonography for detection of pneumothorax has been well described and studied. It is now widely incorporated by sonographers, emergency physicians, trauma surgeons, radiologists, and critical care specialists worldwide. Lung sonography can be performed rapidly at the bedside or in the prehospital setting. It is more sensitive, specific, and accurate than plain chest radiography. The use of color and power Doppler sonography as an adjunct to B- and M-mode imaging for detection of pneumothorax has been described in a small number of studies and case reports but is much less widely known or used...
May 30, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28530480/ultrasonographic-and-histological-evaluation-of-the-effects-of-long-term-carotid-catheterization-on-cardiac-function-in-nmri-mice
#12
Anne C Teilmann, Morten B Thomsen, Elizabeth A Ihms, Nathan Pate, Jann Hau, Klas Abelson
Catheterization of laboratory mice is commonly performed in biomedical research to infuse substances and for blood sampling. One approach is to catheterize the right common carotid artery and advance the catheter until the tip is positioned in the aorta or the proximal brachiocephalic trunk. Owing to the small body size of the mouse, a catheter tends to occupy a great part of even the larger vessel lumens, and this may increase vascular resistance with potential pathophysiological impacts on the heart. The present study compared cardiac function of catheterized mice, with catheter tip placement in the brachiocephalic trunk, with sham-operated mice and non-operated control mice...
January 1, 2017: Laboratory Animals
https://www.readbyqxmd.com/read/28528655/pulmonary-flow-as-an-improved-method-for-determining-cardiac-output-in-mice-after-myocardial-infarction
#13
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
https://www.readbyqxmd.com/read/28511858/reduced-myocardial-reserve-in-young-x-linked-muscular-dystrophy-mice-diagnosed-by-two-dimensional-strain-analysis-combined-with%C3%A2-stress-echocardiography
#14
Zhenzhou Li, Ying Li, Li Zhang, Xiaoying Zhang, Rebecca Sullivan, Xiaojie Ai, Christopher Szeto, Angela Cai, Longjian Liu, Weidong Xiao, Quanshui Li, Shuping Ge, Xiongwen Chen
BACKGROUND: Early, sensitive, and reproducible evaluation of left ventricular function is imperative for the diagnosis of cardiac dysfunction in patients with Duchene muscular dystrophy. The aim of this study was to test the hypothesis that combining two-dimensional strain analysis with catecholamine stress could be a sensitive method for detecting early cardiac dysfunction. METHODS: Mdx (C57BL/10ScSn-Dmdmdx/J, a mouse model of DMD) and control (C57BL/10ScSn) mice were studied with conventional M-mode and high-frequency ultrasound-based two-dimensional speckle-tracking echocardiography using long- and short-axis images of the left ventricle at baseline and after intraperitoneal isoprenaline (ISO) administration (2 μg/g body weight)...
May 13, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28508694/online-versus-offline-spatiotemporal-image-correlation-stic-m-mode-for-the-evaluation-of-cardiac-longitudinal-annular-displacement-in-fetal-growth-restriction
#15
Jozien C Tanis, Nuruddin Mohammed, Mar Bennasar, Josep Maria Martinez, Bart Bijnens, Fatima Crispi, Eduard Gratacos
PURPOSE: Our first aim was to compare online M-mode with offline spatiotemporal image correlation (STIC) M-mode for assessing longitudinal annular displacement (LAD) in growth-restricted fetuses (FGR). Our second aim was to compare LAD measures of FGR cases with controls. MATERIALS AND METHODS: Prospective study including 40 FGR cases (defined estimated fetal weight and birth weight <10th centile) and 72 normally grown fetuses matched to cases by gestational age at scan...
May 31, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28502200/foetal-premature-atrial-contractions-during-the-second-and-third-trimester-are-not-associated-with-foetal-breathing
#16
Geoffrey H Gordon, Joelle Thomas, Barbara Trampe, J I Iruretagoyena
Foetal premature atrial contractions (PACs) are the most commonly encountered and also the most benign foetal arrhythmia. A retrospective cohort study was conducted with the objective to assess whether the presence of foetal breathing was associated with the presence of foetal PACs. A further objective was to evaluate whether this association would affect neonatal outcomes at a high volume referral centre. The diagnosis of PACs was based on the observation of a premature atrial contraction followed by a ventricular contraction on ultrasound myocardial M-mode...
May 14, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28484689/echocardiographic-evaluation-of-pericardial-effusion-and-cardiac-tamponade
#17
REVIEW
Alejandro Pérez-Casares, Sergi Cesar, Laia Brunet-Garcia, Joan Sanchez-de-Toledo
Pericardial effusion (PEff) is defined by an increase in the physiological amount of fluid within the pericardial space. It can appear following different medical conditions, mainly related to inflammation and cardiac surgery. Cardiac tamponade is a critical condition that occurs after sudden and/or excessive accumulation of fluid in the pericardial space that restricts appropriate filling of the cardiac chambers disturbing normal hemodynamics and ultimately causing hypotension and cardiac arrest. It is, therefore, a life-threatening condition that must be diagnosed as soon as possible for correct treatment and management...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28484290/cardiac-structural-and-functional-changes-evaluated-by-transthoracic-and-tissue-doppler-echocardiography-in-adult-patients-with-sickle-cell-disease
#18
Mojdeh Dabirian, Ghasem Janbabaei, Hossein Karami, Maryam Nabati, Mohsen Aarabi, Morteza Namazi, Hadi Darvishi-Khezri
One of the most common genetic blood disorders, resulting from inherited red blood cell disorders, is sickle cell disease (SCD) which is responsible for high death in adult patients with left ventricular diastolic dysfunction and pulmonary hypertension. Tissue Doppler Echocardiography (TDE) and transthoracic echocardiography (TTE) are two useful tools to assess the risk of SCD. The present study was conducted to evaluate the cardiac functions and structure using TDE and TTE among adult patients suffering from sickle cell anemia compare to normal samples...
March 2017: Acta Informatica Medica: AIM
https://www.readbyqxmd.com/read/28473968/utilization-of-intraoperative-real-time-three-dimensional-transoesophageal-echocardiography-to-objectively-assess-improvement-in-synchronization-and-regional-wall-motion-after-coronary-reperfusion
#19
Abhishek Karnwal, Clinton Z Kakazu, Sonia Shah, Bassim Omari, Charu Dutt Arora
It is well known that myocardial ischemia leads to Regional Wall Motion Abnormalities (RWMAs) and reversible depression of Left Ventricular (LV) systolic function. Transoesophageal Echocardiography (TEE) is an established tool for early diagnosis of new RWMAs. However, evaluation of RWMAs by echocardiography is largely qualitative and relies on visual assessment of wall segments. Evaluation of LV systolic function and Ejection Fraction (EF) is more reproducible and accurate with Real-Time 3D Echocardiography (RT3DE) as compared with two-dimensional and M-mode techniques...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28465969/study-of-vitamin-d-status-in-patients-with-dilated-cardiomyopathy-at-a-teaching-hospital-in-north-india
#20
S Priya, Zeba Siddiqi, Ritu Karoli, Jalees Fatima, Saumya Gupta, Ritu Mishra
BACKGROUND/INTRODUCTION: Recent studies have indicated a much broader role to Vitamin D than simply the regulation of calcium metabolism alone. Vitamin D likely confers physiologically relevant pleiotropic functions that include cardioprotective and immunomodulatory effect, and its deficiency could lead to increased risk of cardiovascular disease and heart failure. AIM: The aim of our work was to evaluate the presence of hypovitaminosis D in patients with dilated cardiomyopathy (DCMP) and to study any correlation of echocardiographic parameters with Vitamin D deficiency...
July 2016: Journal of Cardiovascular Echography
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