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https://www.readbyqxmd.com/read/28110433/a-comprehensive-analysis-of-cardiac-valve-plane-displacement-in-healthy-adults-age-stratified-normal-values-by-cardiac-magnetic-resonance
#1
Marco M Ochs, Thomas Fritz, Florian André, Johannes Riffel, Derliz Mereles, Matthias Müller-Hennessen, Evangelos Giannitsis, Hugo A Katus, Matthias G Friedrich, Sebastian J Buss
Cardiac valve plane displacement (CVPD) reflects longitudinal LV function. The purpose of the present study was to determine regional heterogeneity of CVPD in healthy adults to provide normal values by cardiac magnetic resonance (CMR). We measured the anterior aortic plane systolic excursion (AAPSE); the anterior, anterolateral, inferolateral, inferior, and inferoseptal mitral annular plane systolic excursion (MAPSE); and the lateral tricuspid annulus plane systolic excursion (TAPSE). Systolic excursion was measured as the distance from peak end-diastolic to peak end-sysstolic annular position (peak-to-peak) in cine images acquired in 2-, 3- and 4-chamber views...
January 21, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28107368/multi-channel-optical-coherence-elastography-using-relative-and-absolute-shear-wave-time-of-flight
#2
Eli Elyas, Alex Grimwood, Janine T Erler, Simon P Robinson, Thomas R Cox, Daniel Woods, Peter Clowes, Ramona De Luca, Franco Marinozzi, Jérémie Fromageau, Jeffrey C Bamber
Elastography, the imaging of elastic properties of soft tissues, is well developed for macroscopic clinical imaging of soft tissues and can provide useful information about various pathological processes which is complementary to that provided by the original modality. Scaling down of this technique should ply the field of cellular biology with valuable information with regard to elastic properties of cells and their environment. This paper evaluates the potential to develop such a tool by modifying a commercial optical coherence tomography (OCT) device to measure the speed of shear waves propagating in a three-dimensional (3D) medium...
2017: PloS One
https://www.readbyqxmd.com/read/28090255/clinical-utility-of-echocardiography-for-the-diagnosis-and-prognosis-in-children-with-bronchopulmonary-dsyplasia
#3
Young Earl Choi, Hwa Jin Cho, Eun Song Song, In Seok Jeong, Namsik Yoon, Young Youn Choi, Jae Sook Ma, Young Kuk Cho
BACKGROUND: Bronchopulmonary dysplasia (BPD) may result in chronic pulmonary artery hypertension and right ventricular (RV) dysfunction. Various echocardiographic assessments of RV dysfunction have been used to determine whether echocardiographic measurements of premature infants with BPD could provide sensitive measures of RV function that correlates with BPD severity. METHODS: Twenty-eight control subjects without BPD (non BPD group), 28 patients with mild BPD, 11 patients with moderate BPD, and six patients with severe BPD underwent echocardiograms with standard measurement such as ejection fraction by M-mode, tricuspid regurgitation pressure gradient, myocardial performance index (MPI) derived from pulse Doppler, and tissue Doppler imaging (TDI) measurements...
December 2016: Journal of Cardiovascular Ultrasound
https://www.readbyqxmd.com/read/28075037/gauging-the-response-to-cardiac-resynchronization-therapy-the-important-interplay-between-predictor-variables-and-definition-of-a-favorable-outcome
#4
Milan Petrovic, Marija Petrovic, Goran Milasinovic, Bosiljka Vujisic Tesic, Danijela Trifunovic, Olga Petrovic, Ivana Nedeljkovic, Ivana Petrovic, Marko Banovic, Marija Boricic-Kostic, Jelena Petrovic, Ross Arena, Dejana Popovic
AIMS: Selection of patients who are viable candidates for cardiac resynchronization therapy (CRT), prediction of the response to CRT as well as an optimal definition of a favorable response, all require further exploration. The purpose of this study was to evaluate the interplay between the prediction of the response to CRT and the definition of a favorable outcome. METHODS: Seventy patients who received CRT were included. All patients met current guideline criteria for CRT...
January 11, 2017: Echocardiography
https://www.readbyqxmd.com/read/28074426/use-of-colour-doppler-and-m-mode-ultrasonography-to-confirm-the-location-of-an-epidural-catheter-a-retrospective-case-series
#5
Hesham Elsharkawy, Abraham Sonny, Srinivasa Raghavan Govindarajan, Vincent Chan
PURPOSE: Epidural anesthesia and analgesia has a reported failure rate ranging from 13% to 32%. We describe a technique using colour Doppler and M-mode ultrasonography to determine the position of the epidural catheter after placement in adults. METHODS: This retrospective review included 37 adult patients who received postoperative epidural analgesia and underwent technically difficult epidural catheter placement. The demographic characteristics, type of surgery, use of ultrasonography, method of insertion, intervertebral level, and success of epidural localization using colour Doppler were noted for each patient...
January 10, 2017: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/28073429/relation-of-the-myocardial-contraction-fraction-as-calculated-from-m-mode-echocardiography-with-incident-heart-failure-atherosclerotic-cardiovascular-disease-and-mortality-results-from-the-cardiovascular-health-study
#6
Mathew S Maurer, William J H Koh, Traci M Bartz, Sirish Vullaganti, Eddy Barasch, Julius M Gardin, John S Gottdiener, Bruce M Psaty, Jorge R Kizer
We evaluated the association between 2-dimensional (2D) echocardiography (echo)-determined myocardial contraction fraction (MCF) and adverse cardiovascular outcomes including incident heart failure (HF), atherosclerotic cardiovascular disease (ASCVD), and mortality. The MCF, the ratio of left ventricular (LV) stroke volume (SV) to myocardial volume (MV), is a volumetric measure of myocardial shortening that can distinguish pathologic from physiological hypertrophy. Using 2D echo-guided M-mode data from the Cardiovascular Health Study, we calculated MCF in subjects with LV ejection fraction (EF) ≥55% and used Cox models to evaluate its association with incident HF, ASCVD, and all-cause mortality after adjusting for clinical and echo parameters...
December 18, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/28072930/left-ventricular-outflow-tract-obstruction-be-prepared
#7
J S Evans, S J Huang, A S McLean, M Nalos
The current trend to treat hypotension in critically ill patients is to place a greater emphasis on inotropic support and less on fluid resuscitation in order to limit the potential harm from fluid overload. This combination may trigger left ventricular outflow tract obstruction (LVOTO) in susceptible patients. Although LVOTO is classically described in patients with hypertrophic cardiomyopathy it has been reported in other conditions including septic shock, apical ballooning syndrome, myocardial infarction, respiratory failure, and post valvular surgery...
January 2017: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/28072551/assessment-of-subclinical-left-ventricular-changes-in-essential-hypertensive-patients-with-hyperuricemia-a-three-dimensional-speckle-tracking-echocardiography-study
#8
Xiaoyan Fang, Cuizhen Pan, Yongle Chen, Minmin Sun, Zhuojun Zhang, Lindi Jiang, Xiaolin Wang, Xianhong Shu
OBJECTIVE: To evaluate the effect of hyperuricemia (HU) on subclinical changes of left ventricle (LV) function and structure in patients with hypertension (HT) using three-dimensional speckle-tracking echocardiography (3DSTE) and to explore the relationships between serum uric acid (SUA) levels and three-dimensional speckle tracking echocardiography (3DSTE) parameters in hypertensive and nonhypertensive patients with HU. METHODS: Four age- and sex-matched groups were studied: I: healthy controls, HT- HU- (n = 40); II: HT- HU+ (n = 40); III: HT+ HU- (n = 40); IV: HT+ HU+ (n = 44)...
2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28060288/drosophila-preparation-and-longitudinal-imaging-of-heart-function-in-vivo-using-optical-coherence-microscopy-ocm
#9
Jing Men, Jason Jerwick, Penghe Wu, Mingming Chen, Aneesh Alex, Yutao Ma, Rudolph E Tanzi, Airong Li, Chao Zhou
Longitudinal study of the heartbeat in small animals contributes to understanding structural and functional changes during heart development. Optical coherence microscopy (OCM) has been demonstrated to be capable of imaging small animal hearts with high spatial resolution and ultrahigh imaging speed. The high image contrast and noninvasive properties make OCM ideal for performing longitudinal studies without requiring tissue dissections or staining. Drosophila has been widely used as a model organism in cardiac developmental studies due to its high number of orthologous human disease genes, its similarity of molecular mechanisms and genetic pathways with vertebrates, its short life cycle, and its low culture cost...
December 12, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28042785/anterior-aortic-plane-systolic-excursion-a-novel-indicator-of-transplant-free-survival-in-systemic-light-chain-amyloidosis
#10
Marco M Ochs, Johannes Riffel, Arnt V Kristen, Ute Hegenbart, Stefan Schönland, Stefan E Hardt, Hugo A Katus, Derliz Mereles, Sebastian J Buss
BACKGROUND: Anterior aortic plane systolic excursion (AAPSE) was evaluated in the present pilot study as a novel echocardiographic indicator of transplant-free survival in patients with systemic light-chain amyloidosis. METHODS: Eighty-nine patients with light-chain amyloidosis were included in the post-hoc analysis. A subgroup of 54 patients with biopsy-proven cardiac amyloid infiltration were compared with 41 healthy individuals to evaluate the discriminative ability of echocardiographic findings...
December 2016: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28038721/assessment-of-inferior-vena-cava-diameter-by-echocardiography-in-normal-indian-population-a-prospective-observational-study
#11
Shivanand Patil, Santosh Jadhav, Natraj Shetty, Jayashree Kharge, Beeresha Puttegowda, Rangraj Ramalingam, Manjunath Nanjappa Cholenahally
BACKGROUND: The assessment of the IVC diameter is self explanatory for evaluation of the individuals' volume status. Studies regarding IVC diameter estimation in normal individuals are scarce. AIM: The present study aimed to define normal criteria of size and dynamics of the inferior vena cava (IVC) by M-mode echocardiography in normal individuals. METHODS: This was a prospective, single-center, observational study carried out at Sri Jayadeva Institute of Cardiovascular Sciences and Research between December 2011 and April 2014...
December 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/28025374/effect-of-local-anesthetic-concentration-0-2-vs-0-1-ropivacaine-on-pulmonary-function-and-analgesia-after-ultrasound-guided-interscalene-brachial-plexus-block-a-randomized-controlled-study
#12
Andrew K Wong, Lauren Georgiades Keeney, Liting Chen, Rebekah Williams, Jiabin Liu, Nabil M Elkassabany
OBJECTIVE: This study aims to assess diaphragmatic excursion and measure pulmonary functions as measures of the degree to which the phrenic nerve is blocked after ISB with two different concentrations of ropivacaine: 0.2% and 0.1%. DESIGN: Randomized, double-blinded study. SETTING AND PATIENTS: Ambulatory surgical facility. SUBJECTS: Fifty patients undergoing shoulder arthroscopy for rotator cuff repair. METHODS: Patients were randomized to receive ultrasound-guided ISB with 20 mL of either 0...
December 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28018711/cerebral-capillary-velocimetry-based-on-temporal-oct-speckle-contrast
#13
Woo June Choi, Yuandong Li, Wan Qin, Ruikang K Wang
We propose a new optical coherence tomography (OCT) based method to measure red blood cell (RBC) velocities of single capillaries in the cortex of rodent brain. This OCT capillary velocimetry exploits quantitative laser speckle contrast analysis to estimate speckle decorrelation rate from the measured temporal OCT speckle signals, which is related to microcirculatory flow velocity. We hypothesize that OCT signal due to sub-surface capillary flow can be treated as the speckle signal in the single scattering regime and thus its time scale of speckle fluctuations can be subjected to single scattering laser speckle contrast analysis to derive characteristic decorrelation time...
December 1, 2016: Biomedical Optics Express
https://www.readbyqxmd.com/read/28011670/ventricular-interdependence-diagnosed-by-respirophasic-mid-diastolic-ventricular-wall-excursion-m-mode-redux
#14
David Ludden, Khawaja Afzal Ammar
No abstract text is available yet for this article.
December 23, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28004203/aging-effect-on-muscle-synergies-in-stepping-forth-during-a-forward-perturbation
#15
Yun Wang, Kazuhiko Watanabe, Tadayoshi Asaka
PURPOSE: We explored changes in muscle interactions during healthy aging as a window into neural control strategies of postural preparation to action/perturbation. In particular, we quantified the strength of multi-muscle synergies stabilizing the center of pressure (COP) displacement during the preparation for making a step associated with support surface translations. METHODS: Young and elderly subjects were required to make a step in response to support surface perturbations...
December 21, 2016: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/27996161/medium-term-assessment-of-cardiac-function-in-pediatric-cancer-survivors-comparison-of-different-echocardiographic-methods-cardiac-mri-and-cardiac-biomarker-testing-in-adolescent-cancer-survivors
#16
Sanket S Shah, Wendy McClellan, Joshua Q Knowlton, Jeet Mehta, Suma Goudar, Angela Ferguson, Ashley Sherman, Girish Shirali, Joy Fulbright
PURPOSE: To evaluate the feasibility and correlation of 3D echocardiography (echo) and cardiac biomarkers with cardiac MRI, in surveillance of cardiac function for cancer survivors. METHODS: Subjects ≥10 years of age who have survived >2 years after completion of cancer treatment from a single center were enrolled. Cardiac MRI and 3D echo images were obtained on the same day when routine echo was obtained. On the same day, along with annual routine blood test, cardiac biomarkers N-terminal pro-B-type natriuretic peptide levels (NT-proBNP) and troponin-I levels were also measured...
December 20, 2016: Echocardiography
https://www.readbyqxmd.com/read/27995291/assessing-myocardial-function-in-infants-with-pulmonary-hypertension-the-role-of-tissue-doppler-imaging-and-tricuspid-annular-plane-systolic-excursion
#17
Chalese Richardson, Cynthia Amirtharaj, Dorota Gruber, Denise A Hayes
Transthoracic echocardiography is the most common noninvasive method of evaluating pulmonary hypertension (PH) in infants. Identification of reliable, quantitative indices of myocardial function may enhance the diagnostic value of echocardiography in this population. We hypothesized that pulsed wave tissue Doppler imaging (TDI) and tricuspid annular plane systolic excursion (TAPSE) would be reproducible measurements and would suggest decreased ventricular function, in infants with PH. This retrospective case-control study involved subjects diagnosed clinically and echocardiographically with PH at <12 months of age, matched with controls by age and gestational age (GA)...
December 19, 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/27989051/pga-polyglycolic-acid-p4hb-poly-4-hydroxybutyrate-based-bioengineered-valves-in-the-rat-aortic-circulation
#18
Agnieszka A Książek, Katharyn J Mitchell, Nikola Cesarovic, Colin C Schwarzwald, Simon P Hoerstrup, Benedikt Weber
BACKGROUND: Bioengineered living autologous valves with remodeling and growth capacity represent a promising concept for future cardiac and venous valve repair. A meticulous understanding of the mechanisms involved in recellularization and remodeling is essential for the safe and efficient clinical translation of this technology. In this context, the first investigations of bioengineered vascular grafts in immune-incompetent or transgenic rodents represented an important step. However, the in-vivo assessment of bioengineered synthetic scaffold-based (biodegradable) valve replacements in rodent models has not been achieved to date...
May 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/27956205/early-echocardiographic-predictors-of-outcomes-in-the-mouse-transverse-aortic-constriction-heart-failure-model
#19
Caryn Hampton, Raymond Rosa, Barry Campbell, Richard Kennan, Loise Gichuru, Xiaoli Ping, Xiaolan Shen, Kersten Small, Jeffrey Madwed, Joseph J Lynch
INTRODUCTION: Mouse transverse aortic constriction (TAC) is a widely-used model of pressure overload-induced heart failure. An intrinsic limitation of the model is variability in the response to pressure overload even when employing a standard severity of stenosis. Few literature studies have explicitly reported the use of entry criteria or early predictors to mitigate variability and enrich outcomes in this model. METHODS: Eleven-week-old male C57BL/6J mice underwent TAC or sham surgery...
December 9, 2016: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/27943499/prenatal-diagnosis-and-prognosis-of-accelerate-idioventricular-rhythm
#20
Jean-Claude Fouron, Ariane McNeal-Davidson, Sylvia Abadir, Anne Fournier, Jean-Luc Bigras, Christine Boutin, Myriam Brassard, Marie-Josée Raboisson, Nicolaas van Doesburg, Annie Berger, Sophie Brisebois, Roxanne Gendron
OBJECTIVES: Since postnatal identification of accelerated idioventricular rhythm (AIVR) is essentially based on specific electrocardiographic patterns, its prenatal diagnosis is challenging and its genuine incidence undetermined. Therefore the objectives of this study are: 1) To evaluate the performance of specific ultrasonographic approaches in intrauterine identification of cardiocirculatory events linked to electrocardiographic signs of AIVR, including its left or right ventricular origin, and 2) To assess the prenatal prognosis of the arrhythmia...
December 10, 2016: Ultrasound in Obstetrics & Gynecology
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