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https://www.readbyqxmd.com/read/29250515/basics-of-functional-echocardiography-in-children-and-neonates
#1
REVIEW
Cécile Tissot, Vincent Muehlethaler, Nicole Sekarski
Functional echocardiography has become an invaluable tool in the pediatric and neonatal intensive care unit. "Point-of-care," "target," or "focus" echocardiography allows bedside cardiac ultrasound evaluation of the hemodynamic status of the patient, helps in directing treatment, thus improves patients care. In order to be able to perform functional echocardiography, it is essential to understand the principles of ultrasound, to know the echocardiographic equipment and settings necessary to acquire the images...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29243013/exercise-performance-in-pediatric-liver-transplant-recipients-and-its-related-cardiac-function
#2
Seyed Mohsen Dehghani, Mitra Moshref, Hamid Amoozgar, Seyed Ali Malek Hoseini, Saman Nikeghbalian
The aim of this study was to evaluate an exercise test in pediatric liver transplant recipients and its relation to their cardiac function. This cross-sectional study was conducted on 58 children who had successfully undergone orthotopic liver transplantation at least 6 months prior to the study, with the same age and gender-matched control group. M-mode, Doppler, tissue Doppler echocardiography and an exercise test were performed for all the participants. The VO2 values and METS in patients were less than the control (P = 0...
December 14, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/29235270/lamellar-keratoplasty-using-position-guided-surgical-needle-and-m-mode-optical-coherence-tomography
#3
Sungwon Shin, Jung Kweon Bae, Yujin Ahn, Hyeongeun Kim, Geonho Choi, Young-Sik Yoo, Choun-Ki Joo, Sucbei Moon, Woonggyu Jung
Deep anterior lamellar keratoplasty (DALK) is an emerging surgical technique for the restoration of corneal clarity and vision acuity. The big-bubble technique in DALK surgery is the most essential procedure that includes the air injection through a thin syringe needle to separate the dysfunctional region of the cornea. Even though DALK is a well-known transplant method, it is still challenged to manipulate the needle inside the cornea under the surgical microscope, which varies its surgical yield. Here, we introduce the DALK protocol based on the position-guided needle and M-mode optical coherence tomography (OCT)...
December 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29221294/using-m-mode-ultrasonography-to-assess-diaphragm-dysfunction-and-predict-the-success-of-mechanical-ventilation-weaning-in-elderly-patients
#4
Daozheng Huang, Huan Ma, Wenzhao Zhong, Xiaoting Wang, Yan Wu, Tiehe Qin, Shouhong Wang, Ning Tan
Background: Ultrasonography (US) is a non-invasive and commonly available bedside diagnostic tool. The aim of this study was to assess the utility of M-mode US on ventilator weaning outcomes in elderly patients. Methods: This was a single center, prospective, observational study in patients aged 80 years or older who were in the medical intensive care unit, had undergone mechanical ventilation for >48 hours, and met the criteria for a spontaneous breathing trial (SBT)...
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29195751/development-and-validation-of-a-phase-filtered-moving-ensemble-correlation-for-echocardiographic-particle-image-velocimetry
#5
Brett A Meyers, Craig J Goergen, Pavlos P Vlachos
A new processing method for echocardiographic particle image velocimetry (EchoPIV) using moving ensemble (ME) correlation with dynamic phase correlation filtering was developed to improve velocity measurement accuracy for routine clinical evaluation of cardiac function. The proposed method was tested using computationally generated echocardiogram images. Error analysis indicated that ME EchoPIV yields a twofold improvement in bias and random error over the current standard correlation method (βPairwise = -0...
November 28, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29178915/longitudinal-wall-fractional-shortening-an-m-mode-index-based-on-mitral-annular-plane-systolic-excursion-mapse-that-correlates-and-predicts-left-ventricular-longitudinal-strain-lvls-in-intensive-care-patients
#6
Stephen J Huang, Iris Ting, Andrea M Huang, Michel Slama, Anthony S McLean
BACKGROUND: Left ventricular longitudinal strain (LVLS) is a modern measurement for LV function. However, strain measurement is often difficult in critically ill patients. We sought to show LVLS can be estimated using M-mode-derived longitudinal wall fractional shortening (LWFS), which is less dependent on image quality and is easier to perform in critically ill patients. METHODS: Transthoracic echocardiographic records were retrospectively screened and 80 studies suitable for strain and M-mode measurements in the apical 4-chamber view were selected...
November 25, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/29155760/echocardiographic-and-histological-examination-of-cardiac-morphology-in-the-mouse
#7
Delphine Baudouy, Jean-François Michiels, Ana Vukolic, Kay-Dietrich Wagner, Nicole Wagner
An increasing number of genetically modified mouse models has become available in recent years. Moreover, the number of pharmacological studies performed in mice is high. Phenotypic characterization of these mouse models also requires the examination of cardiac function and morphology. Echocardiography and magnetic resonance imaging (MRI) are commonly used approaches to characterize cardiac function and morphology in mice. Echocardiographic and MRI equipment specialized for use in small rodents is expensive and requires a dedicated space...
October 26, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29119598/opening-closing-pattern-of-trifecta-and-freestyle-valves-versus-native-aortic-valve-are-stentless-valves-more-physiologic-than-a-stented-valve
#8
Giordano Tasca, Riccardo Vismara, Francesco Trinca, Beatrice Riva, Amando Gamba, Elisabetta Lobiati
BACKGROUND: Stentless valves have long been considered the ideal valves in terms of hemodynamics. Recently, the Trifecta valve, a stented bioprosthesis with excellent fluid dynamic characteristics, has become available. The aim of the study was to compare the opening/closing pattern of the Freestyle stentless valve and the Trifecta valve with that of the native aortic valve. METHODS: A total of 12 patients with a Freestyle and 10 with a Trifecta valve were compared to normal native aortic valves in 12 control patients...
November 9, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/29118885/mitral-annular-dynamics-and-left-ventricular-diastole
#9
Angel Lopez-Candales, Dagmar F Hernandez-Suarez, Francisco Lopez Menendez
Background: Though diastolic interrogation of the mitral annulus (MA) using tissue Doppler imaging (TDI) has been quite useful in assessing left ventricular (LV) diastolic function, the relative contribution of the previous cycle MA systolic displacement or velocity components to subsequent LV diastole has not been previously investigated. We therefore sought to determine the association between MA systolic dynamics and LV diastolic function parameters. Methods: For this retrospective study, only complete echocardiograms having good endocardial border resolution of both left atrial (LA) and LV chambers with M-mode (MAPSE) and tissue Doppler of the lateral MA (MA TDI S') as well as complete Doppler data to perform assessment of LV diastole were included in our analysis...
October 2017: Cardiology Research
https://www.readbyqxmd.com/read/29116970/assessment-of-tricuspid-annular-motion-by-speckle-tracking-in-anesthetized-patients-using-transesophageal-echocardiography
#10
Tao Shen, Michael H Picard, Lanqi Hua, Sara M Burns, Michael N Andrawes
BACKGROUND: The perioperative assessment of right ventricular (RV) function remains a challenge. Tricuspid annular plane systolic excursion (TAPSE) using M-mode is a widely used measure of RV function. However, accurate alignment of the ultrasound beam with the direction of annular movement can be difficult with transesophageal echocardiography (TEE) to measure TAPSE, precluding effective use of M-mode to measure annular excursion. Tracking of specular reflectors in the myocardium may provide an angle-independent method to assess annular motion with TEE...
November 7, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29115392/the-inhibition-of-myd88-and-trif-signaling-serve-equivalent-roles-in-attenuating-myocardial-deterioration-due-to-acute-severe-inflammation
#11
Min-Zhi Ouyang, Dan Zhou, Yun Zhu, Ming Zhang, Ling Li
Myeloid differentiation factor 88 (MyD88) and Toll or interleukin-1 receptor-domain-containing adaptor-inducing interferon-β (IFN-β) (TRIF) are two pivotal downstream adaptors of Toll-like receptors. Activation of MyD88 or TRIF signaling in cardiac immune pathology of severe inflammation negatively influences heart function. In the present study, severe septic cardiac injury was induced in C57BL/6 mice by cecum ligation and puncture (CLP). A total of 64 mice were divided randomly into the following four groups (n=16/group; 8 for observation of survival rate, 8 for heart sample analysis): Sham, CLP, anti-MyD88-CLP and anti-TRIF-CLP...
November 7, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29111423/maternal-cardiovascular-dysfunction-in-women-with-early-onset-preeclampsia-and-late-onset-preeclampsia-a-cross-sectional-study
#12
Sindhura Vaddamani, Anish Keepanasseril, Ajith Ananthakrishna Pillai, Binay Kumar
OBJECTIVES: To compare the cardiovascular changes associated with early onset (EOPE) and late onset (LOPE) subtypes of preeclampsia. METHODS: A prospective matched cross-sectional study involving 50 women each with early and late onset subtypes of preeclampsia conducted in a tertiary hospital in South India. Cardiac function and remodelling were assessed by conventional 2D, M-mode and doppler echocardiography. RESULTS: Women with EOPE had a significantly more altered left ventricular (LV) geometry, global LV diastolic dysfunction, impairment in myocardial contractility (40% vs...
October 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29111285/reference-values-of-two-dimensional-and-m-mode-echocardiographic-measurements-as-a-function-of-body-size-in-various-equine-breeds-and-in-ponies
#13
A Al-Haidar, N Moula, A Leroux, F Farnir, S Deleuze, C Sandersen, H Amory
INTRODUCTION: The aim of this study was to establish echocardiographic reference values for the equine species using allometric regression equations based on body weight (BW) and thoracic circumference (TC). ANIMALS: A total of 239 horses or ponies were studied, including 65 warmbloods, 33 Standardbreds, 41 Thoroughbreds, 32 Arabian horses, 28 draft horses, and 40 ponies aged from 1 day to 30 years, weighing from 18 to 890 kg, with no evidence of cardiac disease...
October 27, 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/29110750/aortic-elasticity-and-carotid-intima-media-thickness-in-children-with-mitral-valve-prolapse
#14
Elif Erolu, Figen Akalın, Nilüfer Çetiner, Berna Şaylan Çevik
Aim We aimed to study the dimensions, systolic and diastolic functions of the left ventricle; dimensions and elasticity of the aorta; and carotid intima-media thickness and flow-mediated dilatation of the brachial artery in mitral valve prolapse. METHODS: The study group consisted of 43 patients (mean age=13.3±3.9) and 42 healthy children (mean age=12.9±3.4). Left ventricular end-diastolic, end-systolic, left atrial diameters, interventricular septum, and left ventricular posterior wall thickness were measured...
November 7, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/29110304/beta-blockers-for-preventing-aortic-dissection-in-marfan-syndrome
#15
REVIEW
Hyun-Kyoung Koo, Kendra Ak Lawrence, Vijaya M Musini
BACKGROUND: Marfan syndrome is a hereditary disorder affecting the connective tissue and is caused by a mutation of the fibrillin-1 (FBN1) gene. It affects multiple systems of the body, most notably the cardiovascular, ocular, skeletal, dural and pulmonary systems. Aortic root dilatation is the most frequent cardiovascular manifestation and its complications, including aortic regurgitation, dissection and rupture are the main cause of morbidity and mortality. OBJECTIVES: To assess the long-term efficacy and safety of beta-blocker therapy as compared to placebo, no treatment or surveillance only in people with Marfan syndrome...
November 7, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29106902/the-use-of-m-mode-ultrasonography-to-differentiate-the-causes-of-b-lines
#16
Anup K Singh, Paul H Mayo, Seth Koenig, Aranabh Talwar, Mangala Narasimhan
BACKGROUND: The presence of B lines on lung ultrasonography is a characteristic feature of both cardiogenic pulmonary edema (CPE) and noncardiogenic alveolar interstitial syndrome (NCAIS), so their presence does not allow the clinician to differentiate between the two entities. Our study used M-mode ultrasonography of the pleura to differentiate CPE from NCAIS. METHODS: A total of 43 subjects were enrolled in the study, and based on history, physical examination, and chart review, the patients were divided into three groups: an NCAIS group, a CPE group, and a control group...
October 26, 2017: Chest
https://www.readbyqxmd.com/read/29083326/aortic-propagation-velocity-does-not-correlate-with-classical-aortic-stiffness-parameters-in-healthy-individuals
#17
Hatem Arı, Fatih Kahraman, Yasin Türker, Serdar Güler, Hasan Aydın Baş, Doğan Erdoğan
OBJECTIVE: Aortic stiffness is an important cardiovascular risk marker, which can be determined using different noninvasive techniques. Aortic propagation velocity (APV) has recently been established as a novel echocardiographic parameter of aortic stiffness. This study aimed to investigate the association between APV and the classical echocardiography-derived aortic stiffness parameters, aortic distensibility (AD) and aortic strain (AS), in a group of otherwise healthy individuals. METHODS: In total, 97 consecutive healthy subjects were recruited in this observational study...
October 30, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/29072062/morpho-functional-cardiovascular-adaptation-in-hypertensive-patients-two-dimensional-speckle-tracking-echocardiographic-study
#18
Ines P Monte, Chiara DI Benedetto, Filippo A Atanasio, Valentina Losi, Salvatore Licciardi, Corrado Tamburino
BACKGROUND: Twenty-four-hour Blood Pressure (BP) variability is an important predictor of organ damage and cardiovascular events. Although epidemiological data are widely based on evaluation of office (Clinic) BP, 24-hour Ambulatory BP monitoring (ABPM) accurately assess the severity of hypertension to predict cardiovascular events in hypertensive patients, because it more accurately reflects BP load on heart and blood vessels. Conventional transthoracic echocardiography (TTE), such as M-mode and two-dimensional (2D), and more advanced techniques, such as tissue Doppler imaging (TDI) and speckle tracking echocardiography (STE), are used to identify pathological changes of the hypertensive heart disease...
October 25, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/29061725/relationship-between-24-hour-ambulatory-central-systolic-blood-pressure-and-left-ventricular-mass-a-prospective-multicenter-study
#19
Thomas Weber, Siegfried Wassertheurer, Arno Schmidt-Trucksäss, Enrique Rodilla, Cornelia Ablasser, Piotr Jankowski, Maria Lorenza Muiesan, Cristina Giannattasio, Claudia Mang, Ian Wilkinson, Jörg Kellermair, Bernhard Hametner, Jose Maria Pascual, Robert Zweiker, Danuta Czarnecka, Anna Paini, Massimo Salvetti, Alessandro Maloberti, Carmel McEniery
We investigated the relationship between left ventricular mass and brachial office as well as brachial and central ambulatory systolic blood pressure in 7 European centers. Central systolic pressure was measured with a validated oscillometric device, using a transfer function, and mean/diastolic pressure calibration. M-mode images were obtained by echocardiography, and left ventricular mass was determined by one single reader blinded to blood pressure. We studied 289 participants (137 women) free from antihypertensive drugs (mean age: 50...
October 23, 2017: Hypertension
https://www.readbyqxmd.com/read/29029085/impairment-of-elastic-properties-of-the-aorta-in-bicuspid-aortic-valve-relationship-between-biomolecular-and-aortic-strain-patterns
#20
Luca Longobardo, Maria Ludovica Carerj, Gabriele Pizzino, Alessandra Bitto, Maurizio Cusma Piccione, Marta Zucco, Lilia Oreto, Maria Chiara Todaro, Maria Pia Calabrò, Francesco Squadrito, Gianluca Di Bella, Giuseppe Oreto, Bijoy K Khandheria, Scipione Carerj, Concetta Zito
Aims: Bicuspid aortic valve (BAV) is associated with aortic wall alterations. We aimed to detect any correlation between aortic elasticity and genetic and biomolecular patterns of elastin. Methods and results: Forty-nine BAV patients (mean age: 38 ± 17.05) were prospectively enrolled. A blood sample was drawn for analysis of a single nucleotide polymorphism of elastin gene (ELN rs2071307) responsible for misfolding of elastin, and for the amount of elastin soluble fragments (ESF) in the plasma...
September 23, 2017: European Heart Journal Cardiovascular Imaging
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