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doppler echo and tissue doppler

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https://www.readbyqxmd.com/read/29133707/impact-of-transsphenoidal-surgery-on-asymptomatic-cardiomyopathy-in-patients-with-acromegaly-a-single-blinded-study
#1
Anirudh Srinivasan, Ajay Bahl, Hemant Bhagat, Pinaki Dutta, Ashutosh Rai, Jagtar S Devgun, Rupinder Kaur, Kanchan Kumar Mukherjee
BACKGROUND: Patients with acromegaly have 2-3 times the expected mortality rates primarily due to cardiovascular risks. Echocardiographic studies showing improvement of cardiac function following transsphenoidal surgery (TSS) are limited. MATERIALS AND METHODS: All patients with acromegaly underwent preoperative echocardiography and tissue Doppler (Philips i33, 3D ECHO) for assessment of cardiac indices. In the prospective group of patients, echocardiography was repeated after 6 months of surgery...
November 2017: Neurology India
https://www.readbyqxmd.com/read/29118885/mitral-annular-dynamics-and-left-ventricular-diastole
#2
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/29096037/evaluation-of-pharmacokinetic-models-for-perfusion-imaging-with-dynamic-contrast-enhanced-magnetic-resonance-imaging-in-porcine-skeletal-muscle-using-low-molecular-weight-contrast-agents
#3
Stefan Hindel, Giorgos Papanastasiou, Peter Wust, Marc Maaß, Anika Söhner, Lutz Lüdemann
PURPOSE: Pharmacokinetic models for perfusion quantification with a low-molecular-weight contrast agent (LMCA) in skeletal muscle using dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) were evaluated. METHODS: Tissue perfusion was measured in seven regions of interest (ROIs) placed in the total hind leg supplied by the femoral artery in seven female pigs. DCE-MRI was performed using a 3D gradient echo sequence with k-space sharing. The sequence was acquired twice, first after LMCA and then after blood pool contrast agent injection...
November 2, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29072062/morpho-functional-cardiovascular-adaptation-in-hypertensive-patients-two-dimensional-speckle-tracking-echocardiographic-study
#4
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/29053201/changes-in-pulmonary-artery-systolic-pressure-and-right-ventricular-function-in-patients-with-end-stage-renal-disease-on-maintenance-dialysis
#5
Sadashiv Santosh, Cheng Chu, John Mwangi, Melin Narayan, Amy Mosman, Ravi Nayak, Marie Philipneri
BACKGROUND AND AIMS: Pulmonary hypertension is common in patients with end-stage renal disease, and portends a poor prognosis. There are little data in this population, and previous studies have not evaluated quantitative changes in hemodynamics over time while on maintenance dialysis. This study sought to estimate changes in pulmonary artery systolic pressure (PASP) and right ventricular function over time, and to predict PASP change using clinical variables routinely available at time of initial measurement, in patients on maintenance dialysis...
October 20, 2017: Nephrology
https://www.readbyqxmd.com/read/29044493/combining-echo-and-natriuretic-peptides-to-guide-heart-failure-care-in-the-outpatient-setting-a-position-paper
#6
REVIEW
Frank Lloyd Dini, Erberto Carluccio, Fabrizio Montecucco, Gian Marco Rosa, Paolo Fontanive
BACKGROUND: Chronic heart failure (HF) is a relevant and growing public health problem. Although the prognosis has recently improved, it remains a lethal disease, with a mortality that equals or exceeds that of many malignancies. Furthermore, chronic HF is costly, representing a large and growing drain on healthcare resources. METHODS: This narrative review is based on the material searched for and obtained via PubMed up to May 2017. The search terms we used were: "heart failure, echocardiography, natriuretic peptides" in combination with "treatment, biomarkers, guidelines"...
October 16, 2017: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28986271/the-subclinical-cardiomyopathy-of-friedreich-s-ataxia-in-a-pediatric-population
#7
Jonathan F Plehn, Keren Hasbani, Inez Ernst, Kenneth D Horton, Bart E Drinkard, Nicholas A Di Prospero
BACKGROUND: Identification of a subclinical cardiomyopathy in a pediatric patients with Friedreich's ataxia (FA) has not been well-described. METHODS: We performed echocardiography (echo), cardiac magnetic resonance imaging (cMRI) and neurologic assessment in a cross-sectional analysis of 48 genetically-confirmed FA subjects aged 9-17 years with moderate neurologic impairment but without a cardiovascular history. Echo and cMRI-determined left ventricular mass were indexed to height in g/m2...
October 3, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28943125/electrocardiographic-echocardiographic-and-left-atrial-strain-imaging-features-of-a-dog-with-atrial-flutter-and-third-degree-atrioventricular-block
#8
M Baron Toaldo, G Romito, M Cipone, A Diana, M Tursi
A 14-year-old American Staffordshire terrier was presented for episodes of exercise-induced syncope. At admission, atrial flutter coupled to third-degree atrioventricular block was diagnosed electrocardiographically. On the second day of hospitalization, surface electrocardiogram revealed spontaneous conversion to sinus rhythm with persistence of atrioventricular block. Complete transthoracic echocardiograms were performed after each electrocardiographic examination. The combined use of conventional echocardiography with tissue Doppler imaging-based modalities allowed to investigate the atrial electromechanical correlation and function during typical atrial flutter and after its resolution...
October 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/28935634/assessment-of-left-ventricular-function-and-peripheral-vascular-arterial-stiffness-in-patients-with-dipper-and-non-dipper-hypertension
#9
Yan Chen, Ju-Hua Liu, Zhe Zhen, Yuan Zuo, Qingshan Lin, Mingya Liu, Chunting Zhao, Min Wu, Gaozhen Cao, Run Wang, Hung-Fat Tse, Kai-Hang Yiu
A non-dipper pattern of high blood pressure is associated with increased risk of organ damage and cardiovascular disease in patients with hypertension. The aim of the study was to evaluate the left ventricular (LV) remodeling and function and arterial stiffness in a dipper/non-dipper pattern of high blood pressure in patients with hypertension. A total of 183 hypertensive patients with no history of adverse cardiovascular events were divided into two groups based on 24 hours ambulatory blood pressure monitoring (ABPM): 66 patients with a dipper pattern and 117 patients with non-dipper pattern...
September 20, 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/28899862/challenges-and-opportunity-in-the-era-of-quantitative-echocardiography
#10
EDITORIAL
Cheuk-Man Yu
The advancement of echocardiography in the past two decades is more than downsizing of the machines and improvement of image quality, but introduction of new imaging modalities leading to the ability of performing quantitative analysis. This function is greatly facilitated by the integration of echo machines with high performance computers, software programming and establishment of workstation for offline analysis. Today, echo examination is more than estimation of ejection fraction (EF) and patterns of left ventricular (LV) diastolic dysfunction...
September 12, 2017: Echo Research and Practice
https://www.readbyqxmd.com/read/28879657/an-exploratory-investigation-of-echocardiographic-parameters-and-the-effects-of-posture-on-cardiac-structure-and-function-in-the-livingstone-s-fruit-bat-pteropus-livingstonii
#11
Aimee L Drane, Robert Shave, Andrew Routh, Alberto Barbon
There is growing evidence that dilated cardiomyopathy may be a major cause of death in captive Livingstone's fruit bats (Pteropus livingstonii). Therefore, the primary aim of this prospective, exploratory study was to examine whether a systematic cardiac ultrasound protocol is feasible in this critically endangered species and to report basic measures of cardiac structure and function from a cohort of apparently healthy bats. A secondary aim was to test the effect posture (dorsal recumbency vs. roosting) has upon cardiac function in this species...
September 6, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28819006/increased-tissue-oxygenation-explains-the-attenuation-of-hyperaemia-upon-repetitive-pneumatic-compression-of-the-lower-leg
#12
Alessandro Messere, Gianluca Ceravolo, Walter Franco, Daniela Maffiodo, Carlo Ferraresi, Silvestro Roatta
Aim The rapid hyperaemia evoked by muscle compression is short-lived and was recently shown to undergo a rapid decrease even in spite of continuing mechanical stimulation. The present study aims at investigating the mechanisms underlying this attenuation which include local metabolic mechanisms, desensitization of mechano-sensitive pathways, and reduced efficacy of the muscle pump. Methods In 10 healthy subjects short sequences of mechanical compressions (n=3-6; 150 mmHg) of the lower leg were delivered at different inter-stimulus intervals (ranging from 20 to 160 s) through a customized pneumatic device...
August 17, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28764222/evaluation-of-myocardial-injury-using-standard-diagnostic-tools-and-tissue-doppler-imaging-in-blunt-trauma-chest
#13
Parshotam Lal Gautam, Neeru Luthra, Manpreet Kaur, Jaspal Singh, Gurpreet Singh Wander, Rohit Tandon, Namrata, Nikhil Gautam
INTRODUCTION: Myocardial contusion is an entity in chest trauma which is difficult to diagnose. Current practice relies more on cardiac-specific biochemical markers and standard echocardiography, but no gold standard test exists. The application of Tissue Doppler imaging is yet unexplored. AIM: The present study was designed to evaluate cardiac injury in patients with blunt trauma chest using conventional trans-thoracic echocardiography parameters and Tissue Doppler imaging...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28758059/hypertension-and-diabetes-mellitus-how-do-they-affect-the-right-ventricular-functions-individually-and-together
#14
Inas Ibrahim Eweda
CONTEXT: The right ventricle (RV) is neglected in clinical practice although the RV function is the primary determinant of prognosis and effort tolerance in many groups of patients. AIM: The effects of type two diabetes mellitus and hypertension solitary and together were studied on right ventricular systolic and diastolic function by echo-Doppler and tissue Doppler echocardiography. SETTINGS AND DESIGN: A cohort of 300 consecutive patients with echocardiographic right ventricular (RV) diastolic dysfunction as determined by Doppler echocardiography were included in this study...
July 2017: Journal of Cardiovascular Echography
https://www.readbyqxmd.com/read/28740835/severe-pulmonary-hypertension-due-to-combined-pulmonary-fibrosis-and-emphysema-another-cause-of-death-among-smokers
#15
REVIEW
André Carramenha de Góes Hirano, Eduardo Pelegrineti Targueta, Fernando Peixoto Ferraz de Campos, João Augusto Dos Santos Martines, Dafne Andrade, Silvana Maria Lovisolo, Aloisio Felipe-Silva
In 2005, the combined pulmonary fibrosis and emphysema (CPFE) was first defined as a distinct entity, which comprised centrilobular or paraseptal emphysema in the upper pulmonary lobes, and fibrosis in the lower lobes accompanied by reduced diffused capacity of the lungs for carbon monoxide (DLCO). Recently, the fibrosis associated with the connective tissue disease was also included in the diagnosis of CPFE, although the exposure to tobacco, coal, welding, agrochemical compounds, and tire manufacturing are the most frequent causative agents...
April 2017: Autopsy & case reports
https://www.readbyqxmd.com/read/28650810/expanding-acquisition-and-clutter-filter-dimensions-for-improved-perfusion-sensitivity
#16
MinWoo Kim, Craig K Abbey, Jamila Hedhli, Lawrence W Dobrucki, Michael F Insana
A method is explored for increasing the sensitivity of power-Doppler imaging without contrast enhancement. We acquire 1-10 s of echo signals and arrange it into a 3-D spatiotemporal data array. An eigenfilter developed to preserve all three dimensions of the array yields power estimates for blood flow and perfusion that are well separated from tissue clutter. This method is applied at high frequency (24-MHz pulses) to a murine model of an ischemic hindlimb. We demonstrate enhancements to tissue perfusion maps in normal and ischemic tissues...
October 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28648418/longitudinal-ventricular-systolic-dysfunction-in-patients-with-very-severe-obstructive-sleep-apnea-a-case-control-study-using-speckle-tracking-imaging
#17
Mithun Jacob Varghese, Gautam Sharma, Garima Shukla, Sandeep Seth, Sundeep Mishra, Anupama Gupta, Vinay Kumar Bahl
OBJECTIVE: Obstructive sleep apnea (OSA) is a prevalent condition that is increasingly recognized to be associated with cardiovascular disease. We aimed to investigate the subclinical systolic ventricular dysfunction of patients with OSA using novel speckle tracking echocardiographic (STE) techniques. METHODS: This study included 31 patients of polysomnography proven very severe OSA [Apnea Hypopnea Index(AHI) >40] and an equal number of matched population with no OSA as controls...
May 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28638676/utilization-of-longitudinal-ultrasound-to-quantify-joint-soft-tissue-changes-in-a-mouse-model-of-posttraumatic-osteoarthritis
#18
Hao Xu, Echoe M Bouta, Ronald W Wood, Edward M Schwarz, Yongjun Wang, Lianping Xing
To assess the utility of longitudinal ultrasound (US) to quantify volumetric changes in joint soft tissues during the progression of posttraumatic osteoarthritis (PTOA) in mice, and validate the US results with histological findings. A longitudinal cohort of 3-month-old wild-type C57BL/6 male mice received the Hulth-Telhag surgical procedure on right knee to induce PTOA, and sham surgery on their left knee as control. US scans were performed on both knees before, 2, 4, 6, and 8 weeks post-surgery. Joint space volume and Power-Doppler (PD) volume were obtained from US images via Amira software...
2017: Bone Research
https://www.readbyqxmd.com/read/28595852/three-dimensional-model-based-segmentation-in-echocardiography-using-high-temporal-tissue-and-blood-flow-information
#19
Inge H Gerrits, Maartje M Nillesen, Livia Kapusta, Johan M Thijssen, Chris L de Korte
Accurate 3-D surface segmentation is a challenging task in echocardiography because of the relatively low image quality. We introduce a new method for 3-D segmentation of the endocardium involving temporal decorrelation of echo signals originating from tissue and blood using radiofrequency (RF) signals acquired in 3-D Doppler mode. Temporal features were extracted in 3-D Doppler mode, where a sequence of RF lines is recorded for each image line. Each set of RF lines is highly correlated because of the high pulse repetition frequency...
June 5, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28579307/tricuspid-annular-plane-systolic-excursion-in-dogs-with-myxomatous-mitral-valve-disease-with-and-without-pulmonary-hypertension
#20
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 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
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