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Exercise echocardiography

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https://www.readbyqxmd.com/read/29150800/beat-to-beat-estimation-of-stroke-volume-using-impedance-cardiography-and-artificial-neural-network
#1
S M M Naidu, Prem C Pandey, Uttam R Bagal, Suhas P Hardas
Impedance cardiography is a low-cost noninvasive technique, based on monitoring of the thoracic impedance, for estimation of stroke volume (SV). Impedance cardiogram (ICG) is the negative of the first derivative of the impedance signal. A technique for beat-to-beat SV estimation using impedance cardiography and artificial neural network (ANN) is proposed. A three-layer feed-forward ANN with error back-propagation algorithm is optimized by examining the effects of number of neurons in the hidden layer, activation function, training algorithm, and set of input parameters...
November 18, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29146296/anomalous-origin-of-coronary-arteries-from-the-wrong-sinus-in-athletes-diagnosis-and-management-strategies
#2
Vincenzo Palmieri, Salvatore Gervasi, Massimiliano Bianco, Roberta Cogliani, Barbara Poscolieri, Francesco Cuccaro, Riccardo Marano, Mario Mazzari, Cristina Basso, Paolo Zeppilli
AIMS: Although anomalous origin of left (AOLCA) and right coronary artery (AORCA) from the wrong sinus may cause sudden death (SD) in athletes, early diagnosis and management of these anomalies are still challenging. We analysed clinical/instrumental profiles of athletes identified with AOLCA/AORCA focusing our attention on diagnosis, management and follow-up. METHODS AND RESULTS: We report 23 athletes (17 males, mean age 27±17yrs.), 6 with AOLCA and 17 with AORCA...
November 8, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29143104/left-ventricular-end-diastolic-dimension-and-septal-e-are-predictors-of-cardiac-index-at-rest-while-tricuspid-annular-plane-systolic-excursion-is-a-predictor-of-peak-oxygen-uptake-in-patients-with-pulmonary-hypertension
#3
Yoshihisa Nakano, Naoki Okumura, Shiro Adachi, Shigetake Shimokata, Fumitaka Tajima, Yoshihiro Kamimura, Toyoaki Murohara, Takahisa Kondo
Little is known regarding a correlation of hemodynamics at rest or exercise capacity with echocardiographic parameters in patients with pulmonary hypertension (PH). To clarify these potential correlations, we performed transthoracic echocardiography, right heart catheterization, and cardiopulmonary exercise testing in 53 patients with pulmonary arterial hypertension (PAH) and chronic thromboembolic pulmonary hypertension (CTEPH). Left ventricular end-diastolic dimension (LVDd), early diastolic velocity of the septal mitral annulus (septal e'), tricuspid regurgitation peak gradient (TRPG), and tricuspid annular plane systolic excursion (TAPSE) were significantly correlated with cardiac index (LVDd; r = 0...
November 15, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/29142012/a-transcatheter-interatrial-shunt-device-for-the-treatment-of-heart-failure-with-preserved-ejection-fraction-reduce-lap-hf-i-a-phase-2-randomized-sham-controlled-trial
#4
Ted Feldman, Laura Mauri, Rami Kahwash, Sheldon Litwin, Mark J Ricciardi, Pim van der Harst, Martin Penicka, Peter S Fail, David M Kaye, Mark C Petrie, Anupam Basuray, Scott L Hummel, Rhondalyn Forde-McLean, Christopher D Nielsen, Scott Lilly, Joseph M Massaro, Daniel Burkhoff, Sanjiv J Shah
Background -In non-randomized, open-label studies, a transcatheter interatrial shunt device (IASD, Corvia Medical) was associated with lower pulmonary capillary wedge pressure (PCWP), less symptoms, and greater quality of life and exercise capacity in patients with heart failure (HF) and mid-range or preserved ejection fraction (EF ≥ 40%). We conducted the first randomized, sham-controlled trial to evaluate the IASD in HF with EF ≥ 40%. Methods -REDUCE LAP-HF I was a phase 2, randomized, parallel-group, blinded multicenter trial in patients with New York Heart Association (NYHA) class III or ambulatory class IV HF, EF ≥ 40%, exercise PCWP ≥ 25 mmHg, and PCWP-right atrial pressure gradient ≥ 5 mmHg...
November 15, 2017: Circulation
https://www.readbyqxmd.com/read/29128863/persistent-long-term-structural-functional-and-metabolic-changes-after-stress-induced-takotsubo-cardiomyopathy
#5
Caroline Scally, Amelia Rudd, Alice Mezincescu, Heather Wilson, Janaki Srinivasan, Graham Horgan, Paul Broadhurst, David E Newby, Anke Henning, Dana K Dawson
BACKGROUND : Takotsubo cardiomyopathy is an increasingly recognized acute heart failure syndrome precipitated by intense emotional stress. Although there is an apparent rapid and spontaneous recovery of left ventricular ejection fraction, the long-term clinical and functional consequences of takotsubo cardiomyopathy are ill-defined. METHODS : In an observational case-control study, we recruited 37 patients with prior (>12-month) takotsubo cardiomyopathy, and 37 age-, sex-, and comorbidity-matched control subjects...
November 11, 2017: Circulation
https://www.readbyqxmd.com/read/29128571/exercise-testing-in-mitral-regurgitation
#6
REVIEW
Raluca Dulgheru, Stella Marchetta, Tadafumi Sugimoto, Yun Yun Go, Alexandra Girbea, Oury Cécile, Patrizio Lancellotti
Mitral regurgitation (MR) is the second most common valvular heart disease referred for corrective surgery. Diagnostic and management dilemmas are not uncommon when dealing with MR patients. Exercise testing plays an important role in sorting out some of these clinical challenges. In primary asymptomatic MR, exercise testing allows symptom assessment, confident link of symptoms to valve disease severity, safe deferral of surgery for the next 1-year in patients with preserved exercise capacity, insights into the mechanism of exercise-induced dyspnea and helps in individual risk stratification...
November 8, 2017: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/29127877/breast-arterial-calcification-on-screening-mammography-can-predict-significant-coronary-artery-disease-in-women
#7
Brendan S Kelly, Emer ScanlON, Helen Heneghan, Ciaran E Redmond, Gerard M Healy, Enda Mc Dermott, Eric J Heffernan, Ruth Prichard, Sorcha Mc Nally
INTRODUCTION: Breast Arterial Calcification (BAC) on digital mammography has been associated with an increased risk of Coronary Artery Disease (CAD). We aimed to investigate the association of BAC with findings on Coronary Computed Tomography Angiography (CCTA) within a cohort of women from the national breast screening program. METHODS: Symptomatic women (chest pain) aged between 50 and 65 who underwent a CCTA and who also had a screening mammography between 2014 and 2015 were recorded...
November 3, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/29122139/role-of-exercise-testing-in-hypertrophic%C3%A2-cardiomyopathy
#8
REVIEW
Ethan J Rowin, Barry J Maron, Iacopo Olivotto, Martin S Maron
Over the last 25 years, patients with hypertrophic cardiomyopathy (HCM) have been studied with a variety of methods employing physiological exercise that have made major contributions to disease management and are performed without increased risk. Previously under-utilized in HCM, exercise (stress) echocardiography has become incorporated into the standard clinical assessment and diagnostic armamentarium of HCM using upright or supine symptom-limited treadmill or bicycle modalities. In patients without outflow gradients at rest, exercise echocardiography is the most appropriate method for provoking obstruction, with the capability of predicting future development of progressive heart failure symptoms, and differentiating patients with provocable obstruction from those without obstruction, with major implications for dictating treatment options, that is, surgical myectomy (alternatively, alcohol septal ablation) versus heart transplant...
November 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29111120/abnormal-coronary-flow-velocity-reserve-and-decreased-myocardial-contractile-reserve-are-main-factors-in-relation-to-physical-exercise-capacity-in-cardiac-amyloidosis
#9
Tor Skibsted Clemmensen, Hans Eiskjær, Henning Mølgaard, Anders Hostrup Larsen, Jens Soerensen, Niels Frost Andersen, Lars Poulsen Tolbod, Hendrik J Harms, Steen Hvitfeldt Poulsen
BACKGROUND: The aim of the present study was to evaluate the clinical importance of echocardiographic coronary flow velocity reserve (CFVR), resting and exercise left ventricular global longitudinal strain (LVGLS), and myocardial work efficiency (MWE) in patients with cardiac amyloidosis (CA). METHODS: The study population comprised 69 subjects: group A, 27 patients with CA confirmed by endomyocardial biopsy (CA positive); group B, 42 healthy control subjects. The amyloid phenotype in group A was as follows: patients with wild-type transthyretin-related amyloidosis (n = 10), carriers of the Danish familial transthyretin amyloidosis mutation with cardiac involvement (n = 5), and patients with amyloid light chain amyloidosis with cardiac involvement (n = 12)...
October 27, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/29110304/beta-blockers-for-preventing-aortic-dissection-in-marfan-syndrome
#10
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/29103656/percutaneous-coronary-intervention-in-stable-angina-orbita-a-double-blind-randomised-controlled-trial
#11
Rasha Al-Lamee, David Thompson, Hakim-Moulay Dehbi, Sayan Sen, Kare Tang, John Davies, Thomas Keeble, Michael Mielewczik, Raffi Kaprielian, Iqbal S Malik, Sukhjinder S Nijjer, Ricardo Petraco, Christopher Cook, Yousif Ahmad, James Howard, Christopher Baker, Andrew Sharp, Robert Gerber, Suneel Talwar, Ravi Assomull, Jamil Mayet, Roland Wensel, David Collier, Matthew Shun-Shin, Simon A Thom, Justin E Davies, Darrel P Francis
BACKGROUND: Symptomatic relief is the primary goal of percutaneous coronary intervention (PCI) in stable angina and is commonly observed clinically. However, there is no evidence from blinded, placebo-controlled randomised trials to show its efficacy. METHODS: ORBITA is a blinded, multicentre randomised trial of PCI versus a placebo procedure for angina relief that was done at five study sites in the UK. We enrolled patients with severe (≥70%) single-vessel stenoses...
November 1, 2017: Lancet
https://www.readbyqxmd.com/read/29095979/rest-and-exercise-haemodynamics-in-patients-with-one-of-two-stented-bioprostheses-and-in-healthy-controls-with-small-aortic-annuli
#12
Sina Stock, Inga Lohmann, Thorsten Hanke, Ulrich Stierle, Doreen Richardt, Stanislav Tsvelodub, Hans-Hinrich Sievers
OBJECTIVES: Because bioprosthetic aortic valve replacement remains one of the most frequent cardiac surgical procedures, it is necessary to study patient haemodynamics in more detail. Until now, a few studies assessed haemodynamics during exercise, but none with special regard to small aortic annuli. We compared patients who had the differently designed bioprostheses, Trifecta and Perimount Magna Ease (PME), size ≤ 23 mm, and a healthy control group during rest and exercise. METHODS: We determined the mean transvalvular gradient, the effective orifice area (EOA) and the EOA index during rest and exercise using transthoracic echocardiography in 35 patients with the Trifecta (mean age 71...
October 31, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29093153/limited-exercise-capacity-in-patients-with-systemic-sclerosis-identifying-contributing-factors-with-cardiopulmonary-exercise-testing
#13
Nihal Martis, Viviane Queyrel-Moranne, David Launay, Rémi Neviere, Jean-Gabriel Fuzibet, Charles-Hugo Marquette, Sylvie Leroy
OBJECTIVE: Exercise limitation in patients with systemic sclerosis (SSc) is often multifactorial and related to complications such as interstitial lung disease (ILD), pulmonary vasculopathy (PV), left ventricular dysfunction (LVD), and/or peripheral/muscular limitation (PML). We hypothesized that cardiopulmonary exercise testing (CPET) could not only suggest and rank competing etiologies, but also highlight peripheral impairment. METHODS: Clinical, resting pulmonary function testing, and CPET data from patients with SSc referred for exercise limitation between October 2009 and November 2015 were retrospectively analyzed in this bi-center study...
November 1, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/29089819/2017-multimodality-appropriate-use-criteria-for-noninvasive-cardiac-imaging-expert-consensus-of-the-asian-society-of-cardiovascular-imaging
#14
REVIEW
Kyongmin Sarah Beck, Jeong A Kim, Yeon Hyeon Choe, Sim Kui Hian, John Hoe, Yoo Jin Hong, Sung Mok Kim, Tae Hoon Kim, Young Jin Kim, Yun Hyeon Kim, Sachio Kuribayashi, Jongmin Lee, Lilian Leong, Tae-Hwan Lim, Bin Lu, Jae Hyung Park, Hajime Sakuma, Dong Hyun Yang, Tan Swee Yaw, Yung-Liang Wan, Zhaoqi Zhang, Shihua Zhao, Hwan Seok Yong
In 2010, the Asian Society of Cardiovascular Imaging (ASCI) provided recommendations for cardiac CT and MRI, and this document reflects an update of the 2010 ASCI appropriate use criteria (AUC). In 2016, the ASCI formed a new working group for revision of AUC for noninvasive cardiac imaging. A major change that we made in this document is the rating of various noninvasive tests (exercise electrocardiogram, echocardiography, positron emission tomography, single-photon emission computed tomography, radionuclide imaging, cardiac magnetic resonance, and cardiac computed tomography/angiography), compared side by side for their applications in various clinical scenarios...
November 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29079632/an-abnormal-structure-of-the-left-ventricle
#15
Yu Kang, Zheng Li, Ben He
CLINICAL INTRODUCTION: A 36-year-old man was referred for evaluation of an abnormal left ventricular (LV) structure found incidentally on transthoracic echocardiography (TTE) (figure 1). He had no symptoms except for mild palpitations. There was no significant medical history. Physical examination was unremarkable. ECG showed regular sinus rhythm with ST changes in lead II, III, avF and V6 (see online supplementary file 1). Cardiac magnetic resonance (CMR) (figure 1C) was performed. Treadmill exercise test did not demonstrate any electrocardiographic ischaemic changes...
October 27, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29072176/premature-coronary-artery-disease-due-to-homozygous-familial-hypercholesterolemia-in-a-12-year-old-girl
#16
Filiz Ekici, Salih Özçobanoğlu, Fırat Kardelen
BACKGROUND: Homozygous familial hypercholesterolemia (HoFH) is a rare inherited metabolic disease, caused by low-density lipoprotein receptor abnormality. Patients with HoFH have an increased risk for cardiovascular complication (CVC) that usually occurs in the first decade of life. We report a twelve years-old girl with unpredicted presentation for coronary artery disease (CAD) and she was found to have HoFH. CASE REPORT: A 12 years old girl was admitted to our unit with syncope...
October 26, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/29069369/high-resolution-three-dimensional-late-gadolinium-enhanced-cardiac-magnetic-resonance-imaging-to-identify-the-underlying-substrate-of-ventricular-arrhythmia
#17
Alexia Hennig, Marjorie Salel, Frederic Sacher, Claudia Camaioni, Soumaya Sridi, Arnaud Denis, Michel Montaudon, François Laurent, Pierre Jais, Hubert Cochet
Aims: Cardiac magnetic resonance (CMR) is recommended as a second-line method to diagnose ventricular arrhythmia (VA) substrate. We assessed the diagnostic yield of CMR including high-resolution late gadolinium-enhanced (LGE) imaging. Methods and results: Consecutive patients with sustained ventricular tachycardia (VT), non-sustained VT (NSVT), or ventricular fibrillation/aborted sudden death (VF/SCD) underwent a non-CMR diagnostic workup according to current guidelines, and CMR including LGE imaging with both a conventional breath-held and a free-breathing method enabling higher spatial resolution (HR-LGE)...
October 23, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29068603/differences-in-echocardiography-blood-pressure-stroke-volume-maximal-power-and-profile-of-genes-related-to-cardiac-hypertrophy-in-elite-road-cyclists
#18
Grażyna Janikowska, Aleksandra Żebrowska, Aleksandra Kochańska-Dziurowicz, Urszula Mazurek
BACKGROUND: Regular and moderate exercise is beneficial for improving the efficiency of the heart, but high-intensity physical activity may result in cardiac changes. OBJECTIVES: This study focuses on the identification of the differences in echocardiography and blood variables before exercise, as well as the genes associated with cardiac hypertrophy at rest and in response to graded exercise test. MATERIAL AND METHODS: The study group was made up of 28 road cyclists...
September 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29067771/arterial-stiffness-sex-and-age-difference-on-hypertensive-response-to-supine-bicycle-exercise
#19
Hyemoon Chung, Jong-Youn Kim, Byoung Kwon Lee, Pil-Ki Min, Young Won Yoon, Bum-Kee Hong, Se-Joong Rim, Hyuck Moon Kwon, Eui-Young Choi
Contributors to a hypertensive response to exercise (HTR) according to sex and age have not been fully evaluated. The authors analyzed a database of supine bicycle exercise stress echocardiography findings. HTR was defined as peak systolic blood pressure ≥210 mmHg for men and ≥190 mmHg for women during exercise. A total of 797 patients (306 [38%] women) were analyzed, with a mean age of 64 ± 10 years. Female sex, hypertension; higher left ventricular ejection fraction, effective arterial elastance, and pulse wave velocity; and lower total arterial compliance were significantly related to HTR...
October 25, 2017: Journal of Clinical Hypertension
https://www.readbyqxmd.com/read/29059640/assessment-of-release-factors-of-b-type-natriuretic-peptide-during-the-exercise-test-in-patients-with-diabetes-and-after-myocardial-infarction-with-preserved-left-ventricular-systolic-function
#20
Alicja Magdalena Stępień-Wałek, Jacek Owczarek, Beata Wożakowska-Kapłon
INTRODUCTION: The increased concentration of B-type natriuretic peptide (BNP) is an expression of overload of the heart, regardless of the cause. Exercise test is a helpful method of assessing the exercise tolerance and myocardial ischemia. THE AIM: The aim of the study is to determine the factors that cause the release of BNP during the exercise test. MATERIAL AND METHODS: The study included 99 patients with diabetes and after myocardial infarction with preserved left ventricular ejection fraction (EF≥40%)...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
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