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https://www.readbyqxmd.com/read/28423986/global-longitudinal-strain-from-resting-echocardiogram-is-associated-with-long-term-adverse-cardiac-outcomes-in-patients-with-suspected-coronary-artery-disease
#1
Ajay Yadlapati, Timothy R Maher, James D Thomas, Mark Gajjar, Kofo O Ogunyankin, Jyothy J Puthumana
PURPOSE: Measuring myocardial strain using two-dimensional speckle tracking echocardiography has emerged as a new tool to identify subclinical ventricular dysfunction. Abnormal strain has been shown to have superior sensitivity compared with dobutamine stress echocardiography for viability assessment; however, there is a paucity of data regarding the prediction of long-term major adverse cardiac events. We compared the prognostic ability of both global longitudinal strain (GLS) from resting echocardiograms to regional wall motion score index (WMSI) from stress echocardiograms in their ability to predict long-term major adverse cardiac events...
March 1, 2017: Perfusion
https://www.readbyqxmd.com/read/28410346/improved-survival-in-a-long-term-rat-model-of-sepsis-is-associated-with-reduced-mitochondrial-calcium-uptake-despite-increased-energetic-demand
#2
Bernardo B Pinto, Alex Dyson, Michele Umbrello, Jane E Carré, Cristiane Ritter, Innes Clatworthy, Michael R Duchen, Mervyn Singer
OBJECTIVES: To investigate the relationship between prognosis, changes in mitochondrial calcium uptake, and bioenergetic status in the heart during sepsis. DESIGN: In vivo and ex vivo controlled experimental studies. SETTING: University research laboratory. SUBJECTS: Male adult Wistar rats. INTERVENTIONS: Sepsis was induced by intraperitoneal injection of fecal slurry. Sham-operated animals served as controls...
April 13, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28408160/physical-training-promotes-similar-effects-to-the-blockade-of-angiotensin-converting-enzyme-on-the-cardiac-morphology-and-function-in-old-female-rats-subjected-to-premature-ovarian-failure
#3
Ana Carolina S Felix, Sabrina G V Dutra, Ada C Gastaldi, Pâmela C Bonfim, Suenimeire Vieira, Hugo Celso Dutra de Souza
We investigated the effects of angiotensin-converting enzyme (ACE) inhibition and aerobic physical training on the heart of old female rats (82-wk-old) submitted to premature ovarian failure (10-wk.-old). We used different approaches: morphology and function by echocardiography, reactivity of the coronary bed and left ventricular contractibility (Langendorff Technique). Female Wistar ovariectomized (OVX) rats (n=42) were assigned to one of four groups: OVX, vehicle treated only; OVX-EM, Enalapril Maleate only (EM, 10mg·kg(-1)·d(-1)); OVX-T, aerobic trained only; and OVX-EMT, treated with Enalapril Maleate and aerobic trained...
April 10, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28396860/aortic-valve-replacement-for-moderate-aortic-stenosis-with-severe-calcification-and-left-ventricualr-dysfunction-a-case-report-and-review-of-the-literature
#4
Nikhil Narang, Roberto M Lang, Vladimir M Liarski, Valluvan Jeevanandam, Marion A Hofmann Bowman
A 55-year-old man with a history of erosive, seropositive rheumatoid arthritis (RA), and interstitial lung disease presented with shortness of breath. Echocardiography showed new-onset severe left ventricular (LV) dysfunction with an ejection fraction (EF) of 15% and moderately increased mean aortic valve gradient of 20 mmHg in a trileaflet aortic valve with severe sclero-calcific degeneration. Coronary angiography revealed no significant obstructive coronary disease. Invasive hemodynamic studies and dobutamine stress echocardiography were consistent with moderate aortic stenosis...
2017: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28395912/dobutamine-stress-echocardiography-impact-of-abnormal-blood-potassium-levels-on-cardiac-arrhythmias
#5
Jared G Bird, Robert B McCully, Patricia A Pellikka, Garvan C Kane
BACKGROUND: Guidelines suggest that an abnormal blood potassium level is a relative contraindication to performing dobutamine stress echocardiography (DSE). However, this has not been previously studied. METHODS: We reviewed a consecutive series of patients who had potassium testing within 48 hours of undergoing DSE for the evaluation of myocardial ischemia over a 10-year period (N = 13,198). Normal potassium range in our laboratory is 3.6-5.2 mmol/L. Hemolyzed samples were not included...
April 7, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28395281/the-role-of-stress-echocardiography-in-valvular-heart-disease-a-current-appraisal
#6
James L Gentry Iii, Dermot Phelan, Milind Y Desai, Brian P Griffin
Stress echocardiography is a widely available, safe, low-cost, versatile imaging modality which is becoming increasingly recognized as a valuable tool in the assessment of patients with native and prosthetic left-sided valvular heart disease. It provides a quantitative assessment to help guide clinical decision-making when discordance exists between symptoms and severity of valve disease. Exercise (treadmill or bicycle) remains the preferred stress modality, but pharmacological augmentation with dobutamine can be used if needed...
April 11, 2017: Cardiology
https://www.readbyqxmd.com/read/28393781/comparison-of-levosimendan-versus-dobutamine-in-patients-with-moderate-to-severe-left-ventricular-dysfunction-undergoing-off-pump-coronary-artery-bypass-grafting-a-randomized-prospective-study
#7
Ashok Kandasamy, Hariharan Antony Simon, P Murthy, Mahalakshmi Annadurai, Mushkath Mohamed Ali, Gayathri Ramanathan
CONTEXT: Recent upsurge in referral of patients with compromised left ventricular (LV) function for cardiac surgery has led to an increasing use inotropes to achieve improvement of tissue perfusion in the perioperative period. AIMS AND OBJECTIVES: To compare the hemodynamic effects and immediate postoperative outcomes with levosimendan and dobutamine in patients with moderate to severe LV dysfunction undergoing off-pump coronary artery bypass grafting (OPCAB). SETTINGS AND DESIGN: University teaching hospital, randomized control study...
April 2017: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/28351908/unraveling-the-significance-of-abnormal-blood-pressure-responses-during-dobutamine-stress-echocardiography
#8
EDITORIAL
Ferande Peters, Bijoy K Khandheria
No abstract text is available yet for this article.
April 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28351907/frequency-predictors-and-implications-of-abnormal-blood-pressure-responses-during-dobutamine-stress-echocardiography
#9
Sara Abram, Adelaide M Arruda-Olson, Christopher G Scott, Patricia A Pellikka, Vuyisile T Nkomo, Jae K Oh, Alberto Milan, Mohamed M Abidian, Robert B McCully
BACKGROUND: It is not known whether abnormal blood pressure (BP) responses during dobutamine stress echocardiography (DSE) are associated with abnormal test results, nor if such results indicate obstructive coronary artery disease (CAD). We sought to define the frequency of abnormal BP responses during DSE and their impact on accuracy of test results. METHODS AND RESULTS: We studied 21 949 patients who underwent DSE at Mayo Clinic, Rochester, MN, grouped by peak systolic BP achieved during the test...
April 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28345052/cardiac-myosin-binding-protein-c-ser-302-phosphorylation-regulates-cardiac-%C3%AE-adrenergic-reserve
#10
Ranganath Mamidi, Kenneth S Gresham, Jiayang Li, Julian E Stelzer
Phosphorylation of cardiac myosin binding protein-C (MyBP-C) modulates cardiac contractile function; however, the specific roles of individual serines (Ser) within the M-domain that are targets for β-adrenergic signaling are not known. Recently, we demonstrated that significant accelerations in in vivo pressure development following β-agonist infusion can occur in transgenic (TG) mouse hearts expressing phospho-ablated Ser(282) (that is, TG(S282A)) but not in hearts expressing phospho-ablation of all three serines [that is, Ser(273), Ser(282), and Ser(302) (TG(3SA))], suggesting an important modulatory role for other Ser residues...
March 2017: Science Advances
https://www.readbyqxmd.com/read/28343949/lactate-and-echocardiography-before-veno-venous-extracorporeal-membrane-oxygenation-support
#11
Chiara Lazzeri, Manuela Bonizzoli, Giovanni Cianchi, Stefano Batacchi, Paolo Terenzi, Morena Cozzolino, Pasquale Bernardo, Adriano Peris
BACKGROUND: Lactate has been recognised as a prognostic factor in several critical conditions. Veno-Venous Extracorporeal Membrane Oxygenation (VV-ECMO) is a well-established therapy in patients with Acute Respiratory Disease Syndrome (ARDS) unresponsive to conventional therapy and echocardiography pre ECMO initiation has been recently reported to help in risk stratifying these patients. METHODS: We assessed whether the detection of hyperlactataemia could be associated with the presence of left ventricle (LV) or right ventricle (RV) dysfunction in 121 consecutive patients with refractory ARDS...
March 14, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28336538/effects-of-dobutamine-on-intestinal-microvascular-blood-flow-heterogeneity-and-oxygen-extraction-during-septic-shock
#12
Gustavo Adolfo Ospina-Tascón, Alberto Federico García Marín, Gabriel J Echeverri, William Fernando Bermúdez, Humberto José Madriñán Navia, Juan David Valencia, Edgardo Quiñones, Fernando Rodríguez, Angela Marulanda, César Augusto Arango Davila, Alejandro Bruhn, Glenn Hernández, Daniel De Backer
Derangements of microvascular blood flow distribution might contribute to disturbing oxygen extraction by peripheral tissues. We evaluated the dynamic relationships between the mesenteric oxygen extraction ratio (mes-ERO2) and the heterogeneity of microvascular blood flow at the gut and sublingual mucosa, during the development and resuscitation of septic shock in a swine model of fecal peritonitis. Jejunal-villi and sublingual microcirculation were evaluated using a portable intravital-microscopy technique...
March 23, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28330445/cardiac-amyloidosis-mimicking-severe-aortic-valve-stenosis-a-case-report-demonstrating-diagnostic-pitfalls-and-role-of-dobutamine-stress-echocardiography
#13
Tim Salinger, Kai Hu, Dan Liu, Sebastian Herrmann, Kristina Lorenz, Georg Ertl, Peter Nordbeck
BACKGROUND: Aortic valve stenosis is a common finding diagnosed with high sensitivity in transthoracic echocardiography, but the examiner often finds himself confronted with uncertain results in patients with moderate pressure gradients and concomitant systolic heart failure. While patients with true-severe low-gradient aortic valve stenosis with either reduced or preserved left ventricular systolic function are primarily candidates for valve replacement, there is a relevant proportion of patients with pseudo-severe aortic valve stenosis anticipated not to benefit but actually rather deteriorate by interventional therapy or surgery...
March 22, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28325613/head-to-head-comparison-of-the-diagnostic-performance-of-coronary-computed-tomography-angiography-and-dobutamine-stress-echocardiography-in-the-evaluation-of-acute-chest-pain-with-normal-ecg-findings-and-negative-troponin-tests-a-prospective-multicenter-study
#14
Eric Durand, Fabrice Bauer, Nicolas Mansencal, Arshid Azarine, Benoit Diebold, Albert Hagege, Ludivine Perdrix, Martine Gilard, Yannick Jobic, Hélène Eltchaninoff, Mourad Bensalah, Benjamin Dubourg, Jérôme Caudron, Ralph Niarra, Gilles Chatellier, Jean-Nicolas Dacher, Elie Mousseaux
OBJECTIVE: To perform a head-to-head comparison of coronary CT angiography (CCTA) and dobutamine-stress echocardiography (DSE) in patients presenting recent chest pain when troponin and ECG are negative. METHODS: Two hundred seventeen patients with recent chest pain, normal ECG findings, and negative troponin were prospectively included in this multicenter study and were scheduled for CCTA and DSE. Invasive coronary angiography (ICA), was performed in patients when either DSE or CCTA was considered positive or when both were non-contributive or in case of recurrent chest pain during 6month follow-up...
March 2, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28325519/myocardial-contractile-reserve-predicts-left-ventricular-reverse-remodeling-and-cardiac-events-in-dilated-cardiomyopathy
#15
Ryota Morimoto, Takahiro Okumura, Akihiro Hirashiki, Hideki Ishii, Takeo Ichii, Soichiro Aoki, Kenji Furusawa, Hiroaki Hiraiwa, Toru Kondo, Naoki Watanabe, Naoaki Kano, Kenji Fukaya, Akinori Sawamura, Kyosuke Takeshita, Yasuko K Bando, Toyoaki Murohara
BACKGROUND: Catecholamine sensitivity estimated using a dobutamine stress test (DST) is recognized as a measure of the beta-adrenergic myocardial contractile reserve, which is involved with left ventricular reverse remodeling (LV-RR). We investigated whether the prognostic ability of the DST for LV-RR could predict cardiac events. METHODS: There was a total of 192 enrolled patients with dilated cardiomyopathy (DCM). DCM was defined as a LV ejection fraction (LV-EF) ≤45% and LV end-diastolic dimension (LVDd) ≥55mm...
March 18, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28321803/prognosis-of-cirrhotic-patients-admitted-to-intensive-care-unit-a-meta-analysis
#16
Delphine Weil, Eric Levesque, Marc McPhail, Rodrigo Cavallazzi, Eleni Theocharidou, Evangelos Cholongitas, Arnaud Galbois, Heng Chih Pan, Constantine J Karvellas, Bertrand Sauneuf, René Robert, Jérome Fichet, Gaël Piton, Thierry Thevenot, Gilles Capellier, Vincent Di Martino
BACKGROUND: The best predictors of short- and medium-term mortality of cirrhotic patients receiving intensive care support are unknown. METHODS: We conducted meta-analyses from 13 studies (2523 cirrhotics) after selection of original articles and response to a standardized questionnaire by the corresponding authors. End-points were in-ICU, in-hospital, and 6-month mortality in ICU survivors. A total of 301 pooled analyses, including 95 analyses restricted to 6-month mortality among ICU survivors, were conducted considering 249 variables (including reason for admission, organ replacement therapy, and composite prognostic scores)...
December 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28321497/intra-procedural-determination-of-viability-by-myocardial-deformation-imaging-a-randomized-prospective-study-in-the-cardiac-catheter-laboratory
#17
Alexander Schuh, Vadim Karayusuf, Ertunc Altiok, Sandra Hamada, Jörg Schröder, Andras Keszei, Malte Kelm, Matias de la Fuente, Michael Frick, Klaus Radermacher, Nikolaus Marx, Michael Becker
BACKGROUND: The benefit of revascularization for functional recovery depends on the presence of viable myocardial tissue. OBJECTIVE: Myocardial deformation imaging allows determination of myocardial viability. METHODS: In a first approach, we assessed the optimal cutoff value to determine preserved viability by layer-specific echocardiographic myocardial deformation imaging at rest and low-dose dobutamine (DSE) echocardiography: regional endocardial circumferential strain (eCS) <-19% at rest was as accurate as eCS at DSE...
March 20, 2017: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/28320571/incidental-intraoperative-diagnosis-of-subvalvular-mitral-stenosis-with-a-dobutamine-stress-echocardiogram
#18
Michael Essandoh, Juan Crestanello, Amar Bhatt, Manoj Iyer, Hamdy Awad, Emile G Daoud
No abstract text is available yet for this article.
December 16, 2016: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28256176/stress-cardiovascular-magnetic-resonance-imaging-current-and-future-perspectives
#19
REVIEW
Thu-Thao Le, Weiting Huang, Jennifer Ann Bryant, Stuart Alexander Cook, Calvin Woon-Loong Chin
Vasodilator and dobutamine are the main pharmacological agents used in current stress cardiovascular magnetic resonance (CMR). Exercise stress has well-established advantages and it is commonly used in other stress imaging, but the technical considerations have limited its use in stress CMR. In this review, we will describe the diagnostic performance, prognostic value, strengths and challenges of current stress CMR techniques. We will also discuss future perspectives of exercise stress CMR. Areas covered: Despite notable mechanistic differences, vasodilator and dobutamine stress CMR offer similar diagnostic and prognostic value in coronary artery disease...
March 2017: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/28247428/predictors-and-prognostic-significance-of-atrial-fibrillation-developed-during-dobutamine-stress-echocardiography-a%C3%A2-propensity-score-matched-comparison
#20
Yuba Acharya, Sahil Agrawal, Junu Bhattarai, Vlad Cotarlan, Jamshid Shirani
AIMS: Atrial fibrillation (AF) uncommonly occurs during dobutamine stress echocardiography (DSE). We aimed to characterize the predictors and long-term prognostic significance of AF during DSE. METHODS: The clinical, echocardiographic, and outcome data of patients in sinus rhythm who developed AF during DSE were reviewed and compared to a propensity score-matched group of controls. RESULTS: Atrial fibrillation developed in 73 (1% of 7026) patients (age 70±10 years, 58% men)...
March 2017: Echocardiography
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