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Journal articles on the topic 'Apical two chamber view'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Koopman, Laurens P., Bas Rebel, Devi Gnanam, Mirthe E. Menting, Willem A. Helbing, and Eric Boersma. "Reference values for two-dimensional myocardial strain echocardiography of the left ventricle in healthy children." Cardiology in the Young 29, no. 3 (2019): 325–37. http://dx.doi.org/10.1017/s1047951118002378.

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AbstractBackgroundMyocardial deformation by speckle tracking echocardiography provides additional information on left ventricular function. Values of myocardial deformation (strain and strain rate) depend on the type of ultrasound machine and software that is used. Normative values for QLAB (Philips) are scarce, especially for children. It is important to evaluate the influence of age and body size on myocardial deformation parameters, since anthropometrics strongly influence many standard echocardiographic parameters. The aim of this study was to provide comprehensive normal values for myocar

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Yang, Meijun, Xiaoyan Xiao, Zhi Liu, et al. "Deep RetinaNet for Dynamic Left Ventricle Detection in Multiview Echocardiography Classification." Scientific Programming 2020 (August 1, 2020): 1–6. http://dx.doi.org/10.1155/2020/7025403.

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Background. Currently, echocardiography has become an essential technology for the diagnosis of cardiovascular diseases. Accurate classification of apical two-chamber (A2C), apical three-chamber (A3C), and apical four-chamber (A4C) views and the precise detection of the left ventricle can significantly reduce the workload of clinicians and improve the reproducibility of left ventricle segmentation. In addition, left ventricle detection is significant for the three-dimensional reconstruction of the heart chambers. Method. RetinaNet is a one-stage object detection algorithm that can achieve high

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SUDARSHAN, VIDYA K., E. Y. K. NG, U. RAJENDRA ACHARYA, RU SAN TAN, SIAW MENG CHOU, and DHANJOO N. GHISTA. "INFARCTED LEFT VENTRICLE CLASSIFICATION FROM CROSS-SECTIONAL ECHOCARDIOGRAMS USING RELATIVE WAVELET ENERGY AND ENTROPY FEATURES." Journal of Mechanics in Medicine and Biology 16, no. 01 (2016): 1640009. http://dx.doi.org/10.1142/s0219519416400091.

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Parasternal and apical echocardiography images captured from different cross-sectional planes (short-axis and four chambers) convey significant information about the structure and function of infarcted Left Ventricular (LV) myocardium. Thus, features from these cross-sectional views of echocardiograms extracted using computer-aided techniques may aid in characterizing Myocardial Infarction (MI). Therefore, this paper proposes a new algorithm for automated MI characterization using features extracted from parasternal short axis and apical four chambers cross-sectional views of 160 subjects (80

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Ornstein, Hannah, and Dan Adam. "Classification of Echocardiogram View using A Convolutional Neural Network." Artificial Intelligence Research 11, no. 1 (2021): 1. http://dx.doi.org/10.5430/air.v11n1p1.

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The standard views in echocardiography capture distinct slices of the heart which can be used to assess cardiac function. Determining the view of a given echocardiogram is the first step for analysis. To automate this step, a deep network of the ResNet-18 architecture was used to classify between six standard views. The network parameters were pre-trained with the ImageNet database and prediction quality was assessed with a visualization tool known as gradient-weighted class activation mapping (Grad-CAM). The network was able to distinguish between three parasternal short axis views and three

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Kirillova, V. V. "Echocardiography features in determining left atrial dilatation in patients with hypertension." Translational Medicine 8, no. 3 (2021): 5–13. http://dx.doi.org/10.18705/2311-4495-2021-8-3-5-13.

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Background. The correct echocardiographic (Echo) determination of left atrial (LA) dilatation is a criterion for diagnosing heart failure with the preserved ejection fraction.Objective. The aim is to detect probable reasons for underestimating the LA area by Echo in hypertension patients.Design and methods. In the prospective study, the LA area was measured echocardiographically in 89 ambulatory patients (P-wave duration in standard lead II was > 0.1 mm in 57 patients and ≤ 0.1 mm in 32 patients) from the apical four- and two-chamber views with and without focusing on the LA, and from the s

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Banovic, Marko, Bosiljka Vujisic-Tesic, Vuk Kujacic, Slobodan Obradovic, Zdenko Crkvenac, and Miodrag Ostojic. "Association between aortic stenosis severity and contractile reserve measured by two-dimensional strain under low-dose dobutamine testing." Vojnosanitetski pregled 70, no. 12 (2013): 1103–8. http://dx.doi.org/10.2298/vsp110630031b.

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Background/Aim. Early detection of left ventricle (LV) systolic dysfunction could be a clue for surgical treatment in patients with significant aortic stenosis (AS). Therefore, we evaluated LV peak of global longitudinal strain (PGLS) using speckle tracking imaging at rest and during low-dose dobutamine infusion in asymptomatic patients with moderate and severe AS and preserved LV ejection fraction (EF). Methods. All the patients underwent coronary angiography and had no obstructive coronary disease (defined as having no stenosis greater than 50% in diameter). The patients were divided into tw

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Nosir, Y. F. M., W. B. Vletter, E. Boersma, et al. "The apical long-axis rather than the two-chamber view should be used in combination with the four-chamber view for accurate assessment of left ventricular volumes and function." European Heart Journal 18, no. 7 (1997): 1175–85. http://dx.doi.org/10.1093/oxfordjournals.eurheartj.a015414.

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Caivano, Domenico, Mark Rishniw, Lucia Baiona, Francesco Birettoni, Noemi Nisini, and Francesco Porciello. "Assessment of Longitudinal Left Ventricle Deformation by 2-Dimensional Speckle Tracking Echocardiography Obtained from Different Views in Cats." Veterinary Sciences 7, no. 3 (2020): 104. http://dx.doi.org/10.3390/vetsci7030104.

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Two-dimensional speckle tracking echocardiography (STE) is a novel, angle-independent imaging technique useful to assess myocardial function by strain and strain rate analysis in human and veterinary medicine. Commonly, the left apical four-chamber (LAP4Ch) view is used to assess left ventricular (LV) longitudinal deformation in dogs and cats. However, the right parasternal four-chamber (RP4Ch) view is often more easily obtained than the LAP4Ch view in cats. No studies exist comparing longitudinal strain and strain rate values using STE from different echocardiographic views in cats. Therefore

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Dwivedi, Girish, Ganadevan Mahadevan, Donie Jimenez, Michael Frenneaux, and Richard P. Steeds. "Reference values for mitral and tricuspid annular dimensions using two-dimensional echocardiography." Echo Research and Practice 1, no. 2 (2014): 43–50. http://dx.doi.org/10.1530/erp-14-0050.

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Only limited data are available from which normal ranges of mitral annular (MA) and tricuspid annular (TA) dimensions have been established. Normative data are important to assist the echocardiographer in defining the mechanism of atrioventricular valve regurgitation and to inform surgical planning. This study was conceived to establish normal MA and TA dimensions. Consecutive healthy subjects over the age of 60 were randomly recruited from the community as part of a screening project within South Birmingham. MA and TA dimensions in end-systole and end-diastole were evaluated in the parasterna

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Mantovani, Matheus M., Adriana C. Silva, Ruthnéa A. L. Muzzi, et al. "Strain and strain rate by two-dimensional speckle tracking echocardiography in a maned wolf." Pesquisa Veterinária Brasileira 32, no. 12 (2012): 1336–40. http://dx.doi.org/10.1590/s0100-736x2012001200019.

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The measurement of cardiovascular features of wild animals is important, as is the measurement in pets, for the assessment of myocardial function and the early detection of cardiac abnormalities, which could progress to heart failure. Speckle tracking echocardiography (2D STE) is a new tool that has been used in veterinary medicine, which demonstrates several advantages, such as angle independence and the possibility to provide the early diagnosis of myocardial alterations. The aim of this study was to evaluate the left myocardial function in a maned wolf by 2D STE. Thus, the longitudinal, cir

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Katz, Alan S., Donald C. Wallerson, Riccardo Pini, and Richard B. Devereux. "Visually determined long-axis and short-axis parasternal views and four chamber and two chamber apical views do not represent paired orthogonal projections." Journal of the American College of Cardiology 15, no. 2 (1990): A94. http://dx.doi.org/10.1016/0735-1097(90)92091-f.

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Nabeshima, Yosuke, Tetsuji Kitano, and Masaaki Takeuchi. "Reliability of left atrial strain reference values: A 3D echocardiographic study." PLOS ONE 16, no. 4 (2021): e0250089. http://dx.doi.org/10.1371/journal.pone.0250089.

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Background Standard apical four-chamber and two-chamber views often maximize the long-axis of the left ventricle, resulting in artifactitious foreshortening of the left atrium (LA), which may overestimate LA longitudinal reservoir strain (LALS). We compared LALS values between 2D echocardiography (2DE) and 3D echocardiography (3DE) in healthy subjects to determine whether 2DE speckle tracking analysis overestimates the reference value of LALS. Methods and results In this study, 4 types of cohorts were included: 1. 105 normal subjects (retrospectively), 2. 53 patients with cardiovascular diseas

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Gürdoğan, Muhammet, Fethi Emre Ustabaşıoğlu, Osman Kula, and Selçuk Korkmaz. "Cardiac Magnetic Resonance Imaging and Transthoracic Echocardiography: Investigation of Concordance between the Two Methods for Measurement of the Cardiac Chamber." Medicina 55, no. 6 (2019): 260. http://dx.doi.org/10.3390/medicina55060260.

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Background and objectives: Cardiac magnetic resonance (CMR) imaging is the gold standard method for the detection of ventricular volumes and myocardial edema/scar. Transthoracic echocardiography (TTE) imaging is primarily used in the evaluation of cardiac functions and chamber dimensions. This study aims to investigate whether the chamber diameter measurements are concordant with each other in the same patient group who underwent TTE and CMR. Materials and Methods: The study included 41 patients who underwent TTE and CMR imaging. Ventricular and atrial diameter measurements from TTE-derived st

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Chen, Tainsong, Tzu-Pei Chen, and Liang Miin Tsai. "Computerized Quantification Analysis of Left Ventricular Wall Motion from Echocardiograms." Ultrasonic Imaging 19, no. 2 (1997): 138–44. http://dx.doi.org/10.1177/016173469701900204.

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Two-dimensional echocardiography (2-D echo) imaging is a more attractive clinical tool than other modalities that either involve radiation exposure or are too slow to image heart motion in real-time. Computer-aided analysis of left ventricular (LV) wall motion provides quantitative parameters for diagnosis. This study presents a computerized model for quantitative analysis of left ventricular wall motion from two-dimensional echocardiography by the application of image processing algorithms, including automatic threshold estimation, contrast stretching, boundary detection and border smoothing.

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Malm, Siri, Einar Sagberg, Henrik Larsson, and Terje Skjærpe. "Choosing Apical Long-axis Instead of Two-chamber View Gives More Accurate Biplane Echocardiographic Measurements of Left Ventricular Ejection Fraction: A Comparison with Magnetic Resonance Imaging." Journal of the American Society of Echocardiography 18, no. 10 (2005): 1044–50. http://dx.doi.org/10.1016/j.echo.2005.03.002.

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Mantovani, Matheus Matioli, André Martins Gimenes, Jacqueline Ribeiro de Castro, Guilherme Teixeira Goldfeder, Maria Helena Matiko Akao Larsson, and Denise Saretta Schwartz. "Tricuspid valve dysplasia in a domestic feline: case report." Semina: Ciências Agrárias 38, no. 2 (2017): 1087. http://dx.doi.org/10.5433/1679-0359.2017v38n2p1087.

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Tricuspid valve dysplasia (TVD) is a congenital heart defect described in dogs and cats; however, in Brazil there are no reports of this condition in cats. Therefore, our goal was to report a case of TVD in a domestic cat. A four-year-old, female, domestic short hair cat that was seen at the Cardiology Service of the Veterinary Teaching Hospital, University of São Paulo, for apathy, appetite loss and dyspnea for five days. During physical examination, dyspnea with a restrictive respiratory pattern due to pleural effusion was observed. Thoracocentesis was performed and 450 mL of serosanguineous

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Katz, Alan S., Donald C. Wallerson, Riccardo Pini, and Richard B. Devereux. "Visually Determined Long- and Short-Axis Parasternal Views and Four- and Two-Chamber Apical Echocardiographie Views Do Not Consistently Represent Paired Orthogonal Projections." American Journal of Noninvasive Cardiology 7, no. 2 (1993): 65–70. http://dx.doi.org/10.1159/000470254.

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Saha, Sumon Kumar, Mahboob Ali, Mohammad Arifur Rahman, Amal Kumar Choudhury, and Salahuddin Ulubbi. "Left Ventricular Filling Pressure Assessed by Doppler Echocardiography as a Predictor of Inhospital Outcome in Patients of ST-segment Elevation Myocardial Infarction." Cardiovascular Journal 7, no. 2 (2015): 72–78. http://dx.doi.org/10.3329/cardio.v7i2.22244.

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Background: Left ventricular (LV) filling pressure is an important predictor of short and long term outcome in patients with coronary artery disease. Non invasive assessment of this pressure by Doppler echocardiography provides valuable information regarding the prognosis of patient with ST-segment elevation myocardial infarction. Elevated filling pressure is associated with increased incidence of morbidly and mortality due to ventricular remodeling, neuro-hormonal activation & increased excitability. The aim of this study was to assess LV diastolic dysfunction and left ventricular filling

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Abd Rab-Rassol Tolba, Osama, Mohamed Ramadan El-Shanshory, and Adel Abd El-Halum Hagag. "Two-Dimensional Speckle Strain for Evaluation of Left Ventricular Systolic Deformation in Children with Thalassemia Major." Blood 114, no. 22 (2009): 4520. http://dx.doi.org/10.1182/blood.v114.22.4520.4520.

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Abstract Abstract 4520 Objective In β-thalassemia major, Identifying early myocardial insult is important since significant cardiac involvement may predate a decrease in left ventricular systolic functions. The aim of this study is to clarify the value of 2 D-strain (2DS) in early detection of segmental and global left ventricular systolic dysfunction in thalassemic children. Subjects and Methods This study included two age-matched groups:Group 1 (n=30) thalassemic children and Group 2 (n=10) healthy control children. They undergo conventional echo-Doppler measures of left ventricular (LV) sys

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Dragăn, Oana Carmen, Alexandru Ștefan Fărcășanu, Radu Septimiu Câmpian, and Romulus Valeriu Flaviu Turcu. "HUMAN TOOTH AND ROOT CANAL MORPHOLOGY RECONSTRUCTION USING MAGNETIC RESONANCE IMAGING." Medicine and Pharmacy Reports 89, no. 1 (2016): 137–42. http://dx.doi.org/10.15386/cjmed-555.

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Background and aims. Visualization of the internal and external root canal morphology is very important for a successful endodontic treatment; however, it seems to be difficult considering the small size of the tooth and the complexity of the root canal system. Film-based or digital conventional radiographic techniques as well as cone beam computed tomography provide limited information on the dental pulp anatomy or have harmful effects. A new non-invasive diagnosis tool is magnetic resonance imaging, due to its ability of imaging both hard and soft tissues. The aim of this study was to demons

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Patrianakos, Alexandros P., Aggeliki A. Zacharaki, Antonios Kalogerakis, Georgios Solidakis, Fragiskos I. Parthenakis, and Panos E. Vardas. "Two-dimensional global and segmental longitudinal strain: are the results from software in different high-end ultrasound systems comparable?" Echo Research and Practice 2, no. 1 (2015): 29–39. http://dx.doi.org/10.1530/erp-14-0070.

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To compare the peak global longitudinal myocardial strain (PGLS) and peak segmental longitudinal myocardial strain (PSLS) values by speckle-tracking echocardiography (STE) obtained using two different echocardiography devices. STE is an emerging quantitative ultrasound technique that allows an accurate evaluation of global and segmental myocardial function. However, there is a lack of standardization of the acquired data among different manufacturers. Sixty-three subjects, mean age 56.2±10.4 years, underwent complete echocardiographic studies with two different devices (Philips IE33 and Genera

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Moraru, Luminita, Simona Moldovanu, Anisia-Luiza Culea-Florescu, et al. "Texture Spectrum Coupled with Entropy and Homogeneity Image Features for Myocardium Muscle Characterization." Current Bioinformatics 14, no. 4 (2019): 295–304. http://dx.doi.org/10.2174/1574893614666181220095343.

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Background: People in middle/later age often suffer from heart muscle damage due to coronary artery disease associated to myocardial infarction. In young people, the genetic forms of cardiomyopathies (heart muscle disease) are the utmost protuberant cause of myocardial disease. Objective: Accurate early detected information regarding the myocardial tissue structure is a key answer for tracking the progress of several myocardial diseases. associations while known disease-lncRNA associations are required only. Method: The present work proposes a new method for myocardium muscle texture classific

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Shi, Fei, Sheng Feng, Jing Zhu, Yanni Wu, and Jianchang Chen. "Left Ventricular Strain and Dyssynchrony in Young and Middle-Aged Peritoneal Dialysis Patients and Healthy Controls: A Case-Matched Study." Cardiorenal Medicine 8, no. 4 (2018): 271–84. http://dx.doi.org/10.1159/000490395.

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Background: This study aimed to evaluate the role of two-dimensional speckle-tracking imaging (2D-STI) and myocardial layer-specific analysis in evaluating early left ventricular (LV) myocardial function and systolic dyssynchrony in young and middle-aged uremic patients undergoing peritoneal dialysis (PD). Methods: We enrolled 31 PD patients aged ≤65 years with preserved LV ejection fraction (LVEF, ≥54%) as the PD group and 49 age-matched healthy people as the control group. Echocardiography was used to assess the left atrial diameter index (LADI, LAD/BSA), LV mass index (LVMI), LVEF, peak ear

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Tsai, Wei-Chung, Wen-Hsien Lee, Pei-Yu Wu, et al. "Ratio of Transmitral E Wave Velocity to Left Atrial Strain as a Useful Predictor of Total and Cardiovascular Mortality in Hemodialysis Patients." Journal of Clinical Medicine 9, no. 1 (2019): 85. http://dx.doi.org/10.3390/jcm9010085.

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The ratio of transmitral E-wave velocity (E) to a left ventricular diastolic parameter is reported to be well correlated with left ventricular filling pressure and is useful in the prediction of mortality. Left atrial (LA) strain has been demonstrated to be associated with left ventricular diastolic function. The aim of the study is to examine the ability of E/LA strain in predicting total and cardiovascular mortality in hemodialysis (HD) patients. In 197 routine HD patients, global LA strain during the reservoir phase was estimated by taking the average of longitudinal strain data obtained fr

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Tsugu, Toshimitsu, Adriana Postolache, Raluca Dulgheru, et al. "Echocardiographic reference ranges for normal left ventricular layer-specific strain: results from the EACVI NORRE study." European Heart Journal - Cardiovascular Imaging 21, no. 8 (2020): 896–905. http://dx.doi.org/10.1093/ehjci/jeaa050.

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Abstract Aims To obtain the normal range for 2D echocardiographic (2DE) measurements of left ventricular (LV) layer-specific strain from a large group of healthy volunteers of both genders over a wide range of ages. Methods and results A total of 287 (109 men, mean age: 46 ± 14 years) healthy subjects were enrolled at 22 collaborating institutions of the EACVI Normal Reference Ranges for Echocardiography (NORRE) study. Layer-specific strain was analysed from the apical two-, three-, and four-chamber views using 2DE software. The lowest values of layer-specific strain calculated as ±1.96 standa

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Akam-Venkata, Jyothsna, Gilda Kadiu, James Galas, Steven E. Lipshultz, and Sanjeev Aggarwal. "Left ventricle segmental function in childhood cancer survivors using speckle-tracking echocardiography." Cardiology in the Young 29, no. 12 (2019): 1494–500. http://dx.doi.org/10.1017/s1047951119002622.

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AbstractAim:Anthracycline-associated cardiotoxicity in childhood cancer survivors may relate to global or segmental left ventricular abnormalities from associated thromboembolic events and myocardial microinfarcts. We characterized left ventricular segmental changes by two-dimensional speckle-tracking echocardiography in anthracycline-treated asymptomatic childhood cancer survivors.Methods and Results:Childhood cancer survivors’ echocardiograms with normal left ventricular fractional shortening >1 year after anthracycline chemotherapy were studied. Cancer-free control children had normal ec

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Seo, Jongkwon, In Hyun Jung, Jin Hye Park, et al. "The prognostic value of 2D strain in assessment of the right ventricle in patients with dilated cardiomyopathy." European Heart Journal - Cardiovascular Imaging 20, no. 9 (2019): 1043–50. http://dx.doi.org/10.1093/ehjci/jez015.

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Abstract Aims Several studies have been reported using right ventricular (RV) strain as a method for evaluating RV function in patients with various cardiovascular diseases; however, the clinical relevance of RV strain in dilated cardiomyopathy (DCM) patients with sinus rhythm is unknown. The aim of this study was to investigate the relationship between RV strain and adverse events in DCM patients with sinus rhythm. Methods and results We enrolled 143 DCM patients with sinus rhythm who had been first diagnosed, evaluated, and followed at Sanggye Paik Hospital between March 2013 and August 2017

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Boluyt, Marvin O., Kimber Converso, Hyun Seok Hwang, Agdas Mikkor, and Mark W. Russell. "Echocardiographic assessment of age-associated changes in systolic and diastolic function of the female F344 rat heart." Journal of Applied Physiology 96, no. 2 (2004): 822–28. http://dx.doi.org/10.1152/japplphysiol.01026.2003.

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Aging is associated with hypertrophy, dilatation, and fibrosis of the left ventricle (LV) of the heart. Advances in echocardiographic assessment have made it possible to follow changes in cardiac function in a serial, noninvasive manner. The purpose was to determine whether there is echocardiographic evidence of age-associated changes in chamber dimensions and systolic and diastolic properties of the female Fischer 344 (F344) rat heart. On the basis of previous invasive studies, it was predicted that echocardiographic assessment would detect age-associated changes in indexes of systolic and di

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Vogel, Michael, Jan Skovaranek, and Konrad Bühlmeyer. "Assessment of left ventricular mass and volume by cross-sectional echocardiography in newborns and infants with tricuspid atresia prior to surgical intervention." Cardiology in the Young 3, no. 1 (1993): 34–38. http://dx.doi.org/10.1017/s1047951100010581.

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SummaryBecause left ventricular mass may be important in judging feasibility of Fontan type of palliation in tricuspid atresia, this study was undertaken to generate data on left ventricular mass, volume and mass to volume ratio in newborns and infants with tricuspid atresia, native pulmonary stenosis and concordant ventriculoarterial connections prior to any surgical palliation to obtain values for “normal” left ventricular dimensions in tricuspid atresia. The left ventricle was evaluated in the apical two and four chamber view. From these two perpendicular imaging planes, we calculated mass

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JENSEN, Jens, Lars-Åke BRODIN, Britta LIND, Sven V. ERIKSSON, Mats JENSEN-URSTAD, and Christer SYLVÉN. "Deterioration in peak systolic velocity is closely related to ischaemia during angioplasty: a vectorcardiographic and tissue Doppler imaging study." Clinical Science 100, no. 2 (2000): 137–43. http://dx.doi.org/10.1042/cs1000137.

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We tested the hypothesis that the extent of signs of ischaemia detected by vectorcardiography (VCG) during elective coronary angioplasty (percutaneous transluminal coronary angioplasty; PTCA) is related to systolic and diastolic myocardial velocities, as determined by tissue Doppler echocardiography. A total of 15 patients undergoing PTCA (12 men/three women; age 61±9 years), without prior myocardial infarction and with an ejection fraction of > 50%, were included. The balloon inflation was repeated three times, with minimum intervals of 2 min between inflations. Tissue Doppler echocardiogr

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Kaiser, Abrar, Fazilatunnessa Malik, Tuhin Haque, et al. "The Right Ventricular Diameter can Predict the Presence of Pulmonary Hypertension." Bangladesh Heart Journal 30, no. 2 (2016): 48–52. http://dx.doi.org/10.3329/bhj.v30i2.28810.

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Background: Pulmonary arterial hypertension (PAH) is a severe disease characterized by a progressive increase of pulmonary pressure and resistance leading to right heart failure. Pulmonary arterial hypertension is commonly diagnosed at a late stage of the disease and is associated with progressive clinical deterioration and premature death. The assessment of pulmonary artery pressure is important in clinical management and prognostic evaluation of patients with cardiovascular and pulmonary disease. Although PH can be detected invasively by right ventricular (RV) catheterization, accurate non-i

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Li, Jiahui, Aili Li, Jiali Wang, Yu Zhang, and Ying Zhou. "Early Left Ventricular Dysfunction Detected by Speckle Tracking in Long-Term Hemodialysis Patients with Valvular Calcification." Cardiorenal Medicine 9, no. 1 (2018): 22–30. http://dx.doi.org/10.1159/000491679.

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Purpose: Cardiac valve calcification (VC) is very common in patients on hemodialysis. However, the definite effect of VC on left ventricular (LV) geometry and function in this population is unknown, especially when LV ejection fraction (LVEF) is normal. The aim of this study was to determine the effect of VC on LV geometry and function in long-term hemodialysis patients by conventional echocardiography and two-dimensional speckle tracking echocardiography (2D-STE). Methods: A total of 47 hemodialysis patients (2–3 times weekly for 5 years or more) were enrolled in this study. Cardiac VC was de

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El-Yafawi, Rama, David Rancourt, Melkon Hacobian, Dennis Atherton, Mylan C. Cohen, and Joel A. Wirth. "Pulmonary hypertension subjects exhibit right ventricular transient exertional dilation during supine exercise stress echocardiography." Pulmonary Circulation 9, no. 2 (2019): 204589401985190. http://dx.doi.org/10.1177/2045894019851904.

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Pulmonary hypertension is a condition with high morbidity and mortality. Resting transthoracic echocardiography is a pivotal diagnostic and screening test for pulmonary hypertension. The role of exercise stress echocardiography in the diagnosis of pulmonary hypertension is not well-established. We studied right ventricular size changes during exercise using exercise stress echocardiography to assess differences between normal and pulmonary hypertension patients and evaluate test safety, feasibility, and reproducibility. Healthy control and pulmonary hypertension patients performed recumbent ex

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Hutchings, S., L. Bisset, L. Cantillon, et al. "Nurse-delivered focused echocardiography to determine intravascular volume status in a deployed maritime critical care unit." Journal of The Royal Naval Medical Service 101, no. 2 (2015): 124–28. http://dx.doi.org/10.1136/jrnms-101-124.

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AbstractFocused echocardiography is increasingly used by clinicians to guide fluid resuscitation. The UK Defence Medical Services (DMS) have adopted focused echocardiography as a tool to guide flow assessment and resuscitation in deployed critical care. We aimed to explore whether two focused echo techniques, namely Inferior Vena Cava (IVC) and Left Ventricular Outflow Tract Velocity Time integer (LVOT VTi) respiratory variability could be taught to a group of critical care nurses without previous exposure to ultrasound imaging. After a five-week program of training, validation was carried out

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Cho, D. D., and J. Chenkin. "P025: Optimizing practice for learning emergency department transthoracic echocardiography using an ultrasound simulator." CJEM 18, S1 (2016): S86—S87. http://dx.doi.org/10.1017/cem.2016.201.

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Introduction: Emergency department (ED) transthoracic echocardiography (TTE) is an important application of emergency department bedside ultrasound. Given limited curricular hours and economic constraints, training using ultrasound simulators represents an attractive alternative to using live-human models. Despite increased uptake of ultrasound simulator technology, educators lack evidence informing how best to use this technology. Three educational paradigms will be explored in this study: self-guided theory (learners are able to determine when they have had “enough practice”), desirable diff

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Vogel, Michael, Karin Schulze, and Konrad Bühlmeyer. "Assessment of interventricular septal motion by cross-sectional echocardiography in patients with isolated atrial septal defects within the oval fossa." Cardiology in the Young 2, no. 1 (1992): 30–34. http://dx.doi.org/10.1017/s104795110000055x.

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SummaryTo assess whether paradoxical (systolic anterior) motion of the interventricular septum is a true abnormality of septal contraction caused by right ventricular volume overload, we examined the regional pattern of left ventricular contraction in 20 patients with an atrial septal defect within the oval fossa using a fixed and floating reference system of analysis of wall motion. The patients, with a median age of 6.8 (3.5–13.4) years, had a Qp/Qs ratio of 3.5:1 (1.2:1–8:1). They were studied by cross-sectional echocardiography four days (3–5) before and 14.5 (3–67) days after surgical clo

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Fuentes, Juan, Joana Figueiredo, Deborah M. Power, and Adelino V. M. Canário. "Parathyroid hormone-related protein regulates intestinal calcium transport in sea bream (Sparus auratus)." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 291, no. 5 (2006): R1499—R1506. http://dx.doi.org/10.1152/ajpregu.00892.2005.

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Parathyroid hormone-related protein (PTHrP) is a factor associated with normal development and physiology of the nervous, cardiovascular, immune, reproductive, and musculoskeletal systems in higher vertebrates. It also stimulates whole body calcium uptake in sea bream ( Sparus auratus) larvae with an estimated 60% coming from intestinal uptake in seawater. The present study investigated the role of PTHrP in the intestinal calcium transport in the sea bream in vitro. Unidirectional mucosal-to-serosal and serosal-to-mucosal 45Ca fluxes were measured in vitro in duodenum, hindgut, and rectum moun

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Bianco, Francesco, Massimo Colaneri, Valentina Bucciarelli, et al. "Echocardiographic screening for the anomalous aortic origin of coronary arteries." Open Heart 8, no. 1 (2021): e001495. http://dx.doi.org/10.1136/openhrt-2020-001495.

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AimsWe sought to determine the diagnostic performance, clinical profiles and outcomes of anomalous aortic origin of coronary arteries (AAOCA) using a standardised echocardiographic approach in young adults and athletes.MethodsIn 2015–2019, we screened 5998 outpatients (age 16 years (Q1–Q3: 11, 36)), referred for routine echocardiography, using four specific echocardiographic windows: parasternal short/long axis and apical 4/5-chambers view. Coronary CT confirmed AAOCA. For the performance analysis, 300 coronary-CT scans were available; two independent and double-blinded physicians retrospectiv

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Stephens, John D. "Accuracy of apical four-chamber view as screen for congenital heart disease." American Journal of Obstetrics and Gynecology 163, no. 1 (1990): 249–50. http://dx.doi.org/10.1016/s0002-9378(11)90724-8.

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Del Castillo Gordillo, C., F. Appiani Florit, A. Begazo Gonzales, et al. "Transthoracic echocardiogram by protocol apical-subcostal in prone position during invasive mechanical ventilation." European Heart Journal. Acute Cardiovascular Care 10, Supplement_1 (2021). http://dx.doi.org/10.1093/ehjacc/zuab020.001.

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Abstract Funding Acknowledgements Type of funding sources: None. Introduction During COVID-19 pandemic reports increased of transthoracic echocardiography (TTE) in prone and invasive mechanical ventilation (IMV), mostly describing four and five chamber apical views, and inferior vena cava (IVC) by lateral IVC window (from right side of the patient). Purpose Evaluate quality of images obtained with protocol of apical-subcostal TTE in patients with IMV and prone position. Methods Prospective study, between August and December 2020, in adults who required prone position during IMV. After placing

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Kaplan, Abdullah, Raffaele Altara, Marco Manca, et al. "Distorted assessment of left atrial size by echocardiography in patients with increased aortic root diameter." Egyptian Heart Journal 73, no. 1 (2021). http://dx.doi.org/10.1186/s43044-021-00177-2.

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Abstract Background Left atrial (LA) size is frequently assessed by posterior-anterior linear measurement of LA (LAD P-A) in the parasternal long axis to expedite examination. Aging, changes in body surface area, and several cardiovascular pathologies can affect aortic root (AoR) size, thereby affecting LA anatomical shape. We hypothesized that AoR dilatation influences LAD P-A and consequently correct assessment of LA size. Results We tested our hypothesis in a study of 70 patients with AoR diameter ranging from 2.7 to 4.8 cm. LA size assessed in parasternal long axis view as LAD P-A was comp

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Karuzas, A., K. Sablauskas, L. Skrodenis, et al. "P1465Artificial intelligence in echocardiography - Steps to automatic cardiac measurements in routine practice." European Heart Journal 40, Supplement_1 (2019). http://dx.doi.org/10.1093/eurheartj/ehz748.0230.

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Abstract Introduction The growth of artificial intelligence (AI) use in echocardiography over the past years has been exponential, proposing new paths to overcome inter-operator variability and experience of the operator. Even though the applications of AI are still in their infancy within the field of echocardiography, the potential of AI implies future directions and is eager to assist for accuracy and efficiency of manual tracings. Deep learning, a subset of machine learning algorithms, is gaining popularity in echocardiography as a state of the art in visual data analysis. Purpose To evalu

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Nabeshima, Y., K. Otani, T. Kitano, and M. Takeuchi. "1030 Usefulness of novel fully automated 2D speckle tracking software for left ventricular, left atrial, and right ventricular longitudinal strain analysis." European Heart Journal - Cardiovascular Imaging 21, Supplement_1 (2020). http://dx.doi.org/10.1093/ehjci/jez319.625.

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Abstract Funding Acknowledgements Philips Medical Systems Background Continuous efforts of EACVI-ASE strain standardization task force make inter-vendor variability of left ventricular (LV) global longitudinal strain (GLS) lower. However, observer variability is still a major source of measurement inconsistency. The adoption of fully automated 2D strain software has a potential to eliminate this problem. Purpose We aimed to validate the usefulness of novel fully automated LV, left atrial (LA), and right ventricular (RV) 2D speckle tracking software packages. Methods We retrospectively selected

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Kizilca, Ozgur, Derya Ozmen, Tulay Demircan, et al. "Evaluation of left ventricular systolic functions in two-dimensional speckle-tracking echocardiography in children with chronic renal failure." Cardiology in the Young, December 14, 2020, 1–8. http://dx.doi.org/10.1017/s1047951120004205.

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Abstract Background and aim: Chronic kidney disease may lead to left ventricular dysfunction. Early detection of cardiovascular disease in children with chronic kidney disease is essential to prevent cardiovascular morbidity and mortality in early adulthood. This study aimed to document the dysfunction using methods such as two-dimensional speckle-tracking echocardiography in the early stage. Methods: A total of 34 patients diagnosed with chronic kidney disease (mean age ± standard deviation, 10.5 ± 4.1 years) and 37 sex- and age-matched (mean age 9.8 ± 4.2 years) healthy controls were studied

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Vitarelli, Antonio, Mauro Bernardi, Giuseppe Placanica, et al. "Abstract 4243: Assessment Of Physiologic And Pathologic Cardiac Hypertrophy By Two-dimensional Strain And Torsion Analysis." Circulation 118, suppl_18 (2008). http://dx.doi.org/10.1161/circ.118.suppl_18.s_852-a.

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PURPOSE . We sought to determine whether speckle tracking imaging (STI) could distinguish between subjects with athletic LVH and those with pathological LVH, such as occurs in hypertensive heart disease, hypertrophic cardiomyopathy (HCM), or aortic stenosis. METHODS . A total of 127 participants were studied, comprising competitive athletes (30), hypertensive heart disease (30), HCM (12), aortic stenosis (25), and healthy volunteers (30). Left ventricular mass index, ejection fraction, diastolic wall thickness, wall thickness ratio and diastolic and systolic wall-to-volume ratios were determin

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Previtero, M., D. Bottigliengo, A. C. Guta, et al. "47 Identification of threshold values to define right chamber enlargement consistent with severe tricuspid regurgitation." European Heart Journal - Cardiovascular Imaging 21, Supplement_1 (2020). http://dx.doi.org/10.1093/ehjci/jez319.009.

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Abstract Background Right ventricle (RV), tricuspid anulus (TA) and right atrium (RA) dilatation, are listed among the supportive signs to grade severe tricuspid regurgitation (TR) according to current EACVI and ESC guidelines. However, at present, there is no cut-off value to define RV, RA and TA dilatation associated to severe TR. Purpose Accordingly, we sought to identify the threshold values of RV, RA and TA size associated to severe TR. Methods 302 patients (59 ± 13 years, 54 % women) with functional TR underwent three- (3D) and two-dimensional (2D) echocardiography to obtain: 3D RV end d

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Hotta, V. T., N. M. S. Monge, M. L. C. Vieira, F. Fernandes, and C. Mady. "1102 Rare association of left ventricular non-compaction and hypertrophic cardiomyopathy." European Heart Journal - Cardiovascular Imaging 21, Supplement_1 (2020). http://dx.doi.org/10.1093/ehjci/jez319.651.

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Abstract Background LVNC and HCM are cardiomyopathies with distinct clinical presentation that may present common genetic mutations. Some studies suggest a common genetic basis between HCM and LVNC and the possibility of a phenotypic association of these two cardiomyopathies in the same patient. Case report A 39 year old man was referred to our hospital with syncope. His past medical history was unremarkable. His father died of sudden death, at age 49, without investigation of Left ventricular non compaction (LVNC) or Hypertrophic cardiomyopathy (HCM). Physical examination was unremarkable. El

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Takeuchi, M., K. Negishi, Y. Nabeshima, K. Otani, and Y. Otsuji. "P695 Is reference value of left atrial strain using 2D echocardiography really reliable?" European Heart Journal - Cardiovascular Imaging 21, Supplement_1 (2020). http://dx.doi.org/10.1093/ehjci/jez319.369.

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Abstract Funding Acknowledgements MT received research grant from GE Healthcare. Background Left atrial (LA) longitudinal strain (LALS) assessed by two-dimensional echocardiography (2DE) speckle tracking analysis is increasingly popular for the estimation of left ventricular diastolic dysfunction and the prediction of adverse outcome. Since standard apical 4-chamber and 2-chamber views often maximize the long-axis of the left ventricle, and the long axis of the left ventricle and that of the left atrium do not lie on the same 2D cutting plane, these views have a risk for the foreshortening of

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Nguyen, Thuy, Jonathan Wong, Christiane Abouzeid, et al. "Abstract 15055: Quantitative Echocardiography of the Left Atrium: Traditional Measurement by Manual Planimetry Can be Replaced by Automated Four-dimensional Imaging That is More Efficient and Provides Additional Information." Circulation 142, Suppl_3 (2020). http://dx.doi.org/10.1161/circ.142.suppl_3.15055.

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Background: Manual volume measurement of the left atrium (LA) using two-dimensional (2D) imaging is time consuming and mainly produces volumetric information. Hypothesis: LA chamber quantification by semi-automated four-dimensional (4D) imaging may be more efficient and produces both volume and comprehensive functional analysis. Methods: Fifty subjects from the Healthy eHeart cohort of normal echocardiograms studied at the Research Cardiac Physiology Laboratory were selected by representative LA volumes. Studies were performed on a GE Vivid E95. Plainimetry was done on LA 2D images from apical

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"Mitral Valve Abnormality Detection by fully end to end with Deep Neural Network." International Journal of Engineering and Advanced Technology 9, no. 3 (2020): 1997–2004. http://dx.doi.org/10.35940/ijeat.c5372.029320.

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The purpose of this research is to automatically identify normal and abnormal mitral leaflets in an apical four-chamber view.one of the widely spread valvular diseases is mitral valve disease in underdeveloped countries, still a burden for health sociality as well as countries. around 80 percent of valvular diseases are mitral valve disease problems. As far as World Heart Foundation Guidelines are concerned, It is totally based on mitral leaflets morphology. Due to the dependency on the sonographer's experience, it is highly subjective for argument. Measurement of thickness of leaflets, calcif

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