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https://www.readbyqxmd.com/read/29222864/effects-of-cardiac-resynchronization-therapy-after-inferior-myocardial-infarction-on-secondary-mitral-regurgitation-and-mitral-valve-geometry
#1
Christos G Mihos, Evin Yucel, Romain Capoulade, Mary P Orencole, Gaurav A Upadhyay, Orlando Santana, Jagmeet P Singh, Michael H Picard
BACKGROUND: The effects of cardiac resynchronization therapy (CRT) on secondary mitral regurgitation (MR), and mitral valve (MV) and left ventricular (LV) geometry, in patients with prior inferior myocardial infarction is not clearly defined. We assessed these outcomes utilizing 2-dimensional echocardiography, and analyzed echocardiographic geometric variables that may correlate with follow-up MR severity. METHODS: Between 2009 and 2012, 229 CRT were implanted. Twenty-two had prior inferior myocardial infarction, ≥ mild MR at baseline, and serial echocardiography...
December 9, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29217489/fixed-volume-particle-trace-emission-for-the-analysis-of-left-atrial-blood-flow-using-4d-flow-mri
#2
Stephen Gaeta, Petter Dyverfeldt, Jonatan Eriksson, Carl-Johan Carlhäll, Tino Ebbers, Ann F Bolger
4D Flow MRI has been used to quantify normal and deranged left ventricular blood flow characteristics on the basis of functionally distinct flow components. However, the application of this technique to the atria is challenging due to the presence of continuous inflow. This continuous inflow necessitates plane-based emission of particle traces from the inlet veins, leading to particles that represents different amounts of blood, and related quantification errors. The purpose of this study was to develop a novel fixed-volume approach for particle tracing and employ this method to develop quantitative analysis of 4D blood flow characteristics in the left atrium...
December 4, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29215469/multimodality-coronary-imaging-to-predict-periprocedural-myocardial-necrosis-after-an-elective-percutaneous-coronary-intervention
#3
Masahiro Hoshino, Taishi Yonetsu, Tadashi Murai, Yoshihisa Kanaji, Eisuke Usui, Masao Yamaguchi, Masahiro Hada, Rikuta Hamaya, Yoshinori Kanno, Tetsumin Lee, Tsunekazu Kakuta
BACKGROUND: Although multiple imaging modalities have been tested to predict periprocedural myocardial necrosis (PMN), the superior predictive efficacy of these imaging findings has not been established fully. We sought to evaluate which findings of the coronary imaging tools would best provide predictive efficacy of PMN among optical coherence tomography (OCT), intravascular ultrasound (IVUS), and coronary computed tomography (CCT) angiography. PATIENTS AND METHODS: A total of 130 patients with stable angina pectoris who underwent OCT, IVUS, and CCT examinations for a single de-novo preprocedural lesion were investigated...
December 5, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/29214319/electrocardiographic-findings-in-national-basketball-association-athletes
#4
Marc P Waase, R Kannan Mutharasan, William Whang, Marco R DiTullio, John P DiFiori, Lisa Callahan, Jimmie Mancell, Dermot Phelan, Allan Schwartz, Shunichi Homma, David J Engel
Importance: While it is known that long-term intensive athletic training is associated with cardiac structural changes that can be reflected on surface electrocardiograms (ECGs), there is a paucity of sport-specific ECG data. This study seeks to clarify the applicability of existing athlete ECG interpretation criteria to elite basketball players, an athlete group shown to develop significant athletic cardiac remodeling. Objective: To generate normative ECG data for National Basketball Association (NBA) athletes and to assess the accuracy of athlete ECG interpretation criteria in this population...
December 6, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/29209541/a-rare-manifestation-of-asymptomatic-ebstein-s-anomaly-with-tricuspid-valve-endocarditis
#5
Carmel Moazez, Vicken Zeitjian, Christian Breburda, Ranjini Roy
Ebstein's anomaly is a rare congenital heart disease that presents with apical displacement of the septal and posterior leaflets of the tricuspid valve. It has a wide spectrum of clinical presentations and has been shown to manifest itself any time from birth to adulthood. Our patient is a 43-year-old male with a history of intravenous heroin abuse who presented to the emergency department with worsening shortness of breath and lower extremity edema. He denied any prior cardiac history. A transthoracic echo showed normal left ventricular function, but a large 2...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/29208632/right-ventricular-exercise-contractile-reserve-and-outcomes-after-early-surgery-for-primary-mitral-regurgitation
#6
Emilie Vitel, Elena Galli, Christophe Leclercq, Maxime Fournet, Christian Bosseau, Hervé Corbineau, Guillame Bouzille, Erwan Donal
OBJECTIVE: To assess if the lack of development of right ventricular (RV) contractile reserve during exercise echocardiography (ex-echo) might be a predictor of postoperative major adverse cardiovascular events (MACEs) in patients with primary mitral regurgitation (pMR) undergoing early surgery. METHODS: Comprehensive resting and ex-echo were performed in 142 asymptomatic patients (58±21 years, 68% men, New York Heart Association functional class ≤2) with isolated severe pMR and preserved left ventricular (LV) function (LV ejection >60%, LV end-systolic diameter <45 mm) undergoing mitral valve replacement (n=20) or repair...
December 5, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29206942/understanding-decision-making-in-cardiac-imaging-determinants-of-appropriate-use
#7
Ricardo Fonseca, Kim Jose, Thomas H Marwick
Aims: Appropriate Use Criteria (AUC) for echocardiography were developed in 2007 to facilitate decision-making, reduce variability in test utilization, and encourage rational use of imaging. However, there is little evidence that the AUC have favourably influenced ordering behaviour. This study explores the factors that contribute to clinicians requesting echocardiograms with a focus on appropriate use. Methods and results: Semi-structured face-to-face interviews with cardiologists and non-cardiologists who had requested echocardiograms were conducted at an Australian tertiary hospital...
November 30, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29197612/pre-operative-cardiac-stress-testing-in-the-southern-california-vascular-outcomes-improvement-collaborative
#8
Kaelan Chan, Ahmed M Abou-Zamzam, Karen Woo
OBJECTIVE: The objective of this study is to examine the use of pre-operative cardiac stress testing (PCST) in the Southern California Vascular Outcomes Improvement Collaborative (So Cal VOICe). METHODS: A retrospective review was performed of data in all modules of the So Cal VOICe from September 2012 through May 2016. PCST was defined as stress echocardiogram or nuclear stress test. A new post-operative myocardial infarction (MI) was defined as troponin elevation and/or electrocardiogram/imaging changes with or without ischemic symptoms...
November 29, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29197472/frequency-of-inverted-electrocardiographic-t-waves-cerebral-t-waves-in-patients-with-acute-strokes-and-their-relation-to-left-ventricular-wall-motion-abnormalities
#9
Jeremy Stone, Victor Mor-Avi, Agnieszka Ardelt, Roberto M Lang
Transient, symmetric, and deep inverted electrocardiogram (ECG) T waves in the setting of stroke, commonly referred to as cerebral T waves, are rare, and the underlying mechanism is unclear. Our study aimed to test the hypothesis that cerebral T waves are associated with transient cardiac dysfunction. This retrospective study included 800 patients admitted with the primary diagnosis of hemorrhagic or ischemic stroke. ECGs were examined for cerebral T waves, defined as T-wave inversion of ≥5 mm depth in ≥4 contiguous precordial leads...
November 14, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29195751/development-and-validation-of-a-phase-filtered-moving-ensemble-correlation-for-echocardiographic-particle-image-velocimetry
#10
Brett A Meyers, Craig J Goergen, Pavlos P Vlachos
A new processing method for echocardiographic particle image velocimetry (EchoPIV) using moving ensemble (ME) correlation with dynamic phase correlation filtering was developed to improve velocity measurement accuracy for routine clinical evaluation of cardiac function. The proposed method was tested using computationally generated echocardiogram images. Error analysis indicated that ME EchoPIV yields a twofold improvement in bias and random error over the current standard correlation method (βPairwise = -0...
November 28, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29194738/cardiac-mr-elastography-using-reduced-fov-single-shot-spin-echo-epi
#11
Yi Sui, Shivaram Poigai Arunachalam, Arvin Arani, Joshua D Trzasko, Phillip M Young, James F Glockner, Kevin J Glaser, David S Lake, Kiaran P McGee, Armando Manduca, Phillip J Rossman, Richard L Ehman, Philip A Araoz
PURPOSE: To implement a reduced field of view (rFOV) technique for cardiac MR elastography (MRE) and to demonstrate the improvement in image quality of both magnitude images and post-processed MRE stiffness maps compared to the conventional full field of view (full-FOV) acquisition. METHODS: With Institutional Review Board approval, 17 healthy volunteers underwent both full-FOV and rFOV cardiac MRE scans using 140-Hz vibrations. Two cardiac radiologists blindly compared the magnitude images and stiffness maps and graded the images based on several image quality attributes using a 5-point ordinal scale...
December 1, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29194288/area-at-risk-can-be-assessed-by-iodine-123-meta-iodobenzylguanidine-single-photon-emission-computed-tomography-after-myocardial-infarction-a-prospective-study
#12
Christophe Hedon, Fabien Huet, Fayçal Ben Bouallegue, Hélène Vernhet, Jean-Christophe Macia, Thien-Tri Cung, Florence Leclercq, Stéphane Cade, Frédéric Cransac, Benoit Lattuca, D'Arcy Vandenberghe, Aurélie Bourdon, Meriem Benkiran, Fabien Vauchot, Richard Gervasoni, Emmanuel D'estanque, Denis Mariano-Goulart, François Roubille
BACKGROUND: Myocardial salvage is an important surrogate endpoint to estimate the impact of treatments in patients with ST-segment elevation myocardial infarction (STEMI). AIM: The aim of this study was to evaluate the correlation between cardiac sympathetic denervation area assessed by single-photon emission computed tomography (SPECT) using iodine-123-meta-iodobenzylguanidine (I-MIBG) and myocardial area at risk (AAR) assessed by cardiac magnetic resonance (CMR) (gold standard)...
November 29, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29191613/abnormal-biventricular-performance-in-asymptomatic-adolescents-late-after-repaired-tetralogy-of-fallot-combined-two-dimensional-speckle-tracking-and-three-dimensional-echocardiography-study
#13
Ken-Pen Weng, Yu-Chi Hung, Shih-Hui Huang, Huang-Wei Wu, Kuang-Jen Chien, Chu-Chuan Lin, Hsu-Hsia Peng, Ming-Ting Wu
BACKGROUND: The aim of this prospective study was to assess biventricular performance in asymptomatic adolescents with repaired tetralogy of Fallot (TOF) using 2D speckle tracking and real time 3D echocardiography simultaneously. METHODS: We studied 31 patients with repaired TOF (M/F: 22/9, age: 16.1 ± 6.1 yrs) who had history of cardiac surgery with mean follow-up duration of 12.8 years, and 32 age- and sex-matched normal individuals (M/F: 23/9, age: 16.6 ± 5...
November 27, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/29190860/-hemodynamic-regime-of-asymptomatic-heart-disease-patients-studied-by-echocardiogram
#14
José Rafael Cuauhtémoc Acoltzin-Vidal
BACKGROUND: Viewing heart failure as a clinical syndrome delays treatment and impairs prognosis, which leads to the question: Is it possible to make an early diagnosis based on echocardiography studies? METHODS: It was carried out a review of medical records of asymptomatic heart disease patients, with no treatment, who were studied by echocardiogram in order to measure cardiac output (CO) and total peripheral vascular resistance (TPVR), for which mean blood pressure was calculated...
November 2017: Revista Médica del Instituto Mexicano del Seguro Social
https://www.readbyqxmd.com/read/29190694/contrast-enhanced-magnetic-resonance-imaging-for-the-detection-of-ruptured-coronary-plaques-in-patients-with-acute-myocardial-infarction
#15
Christian H P Jansen, Divaka Perera, Andrea J Wiethoff, Alkystis Phinikaridou, Reza M Razavi, Aldo Rinaldi, Mike S Marber, Gerald F Greil, Eike Nagel, David Maintz, Simon Redwood, Rene M Botnar, Marcus R Makowski
PURPOSE: X-ray coronary angiography (XCA) is the current gold standard for the assessment of lumen encroaching coronary stenosis but XCA does not allow for early detection of rupture-prone vulnerable plaques, which are thought to be the precursor lesions of most acute myocardial infarctions (AMI) and sudden death. The aim of this study was to investigate the potential of delayed contrast-enhanced magnetic resonance coronary vessel wall imaging (CE-MRCVI) for the detection of culprit lesions in the coronary arteries...
2017: PloS One
https://www.readbyqxmd.com/read/29188318/myocardial-strain-using-cardiac-mr-feature-tracking-and-speckle-tracking-echocardiography-in-duchenne-muscular-dystrophy-patients
#16
Bryan Siegel, Laura Olivieri, Heather Gordish-Dressman, Christopher F Spurney
Duchenne muscular dystrophy (DMD) is an inherited X-linked disorder with an incidence of 1 in 3500 male births, and cardiomyopathy is becoming the leading cause of death. While Cardiac MRI (CMR) and late gadolinium enhancement (LGE) are important tools in recognizing myocardial involvement, myocardial strain imaging may demonstrate early changes and allow patients to avoid gadolinium contrast. We performed CMR feature tracking (FT) and echo-based speckle tracking (STE) strain measures on DMD patients and age/sex matched controls who had received a CMR with contrast and transthoracic echocardiogram...
November 29, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/29184434/manifestation-of-non-st-elevation-myocardial-infarction-due-to-hyperthyroidism-in-an-anomalous-right-coronary-artery
#17
Vicken Zeitjian, Carmel Moazez, Mehrdad Saririan, David L August, Ranjini Roy
Introduction: Anomalous origin of the right coronary artery (RCA) from the left coronary cusp of the aorta is a moderately rare but potentially life-threatening incident. Myocardial infarction (MI) and sudden cardiac death have been described with this anomaly, especially in those who engage in excessive exercise. However, this case study shows this incidence in association with hyperthyroidism. Case description: A previously healthy 51-year-old female with history of hypothyroidism presented with acute onset chest pain for 1 day...
2017: International Journal of General Medicine
https://www.readbyqxmd.com/read/29181795/comparison-of-3d-echocardiogram-derived-3d-printed-valve-models-to-molded-models-for-simulated-repair-of-pediatric-atrioventricular-valves
#18
Adam B Scanlan, Alex V Nguyen, Anna Ilina, Andras Lasso, Linnea Cripe, Anusha Jegatheeswaran, Elizabeth Silvestro, Francis X McGowan, Christopher E Mascio, Stephanie Fuller, Thomas L Spray, Meryl S Cohen, Gabor Fichtinger, Matthew A Jolley
Mastering the technical skills required to perform pediatric cardiac valve surgery is challenging in part due to limited opportunity for practice. Transformation of 3D echocardiographic (echo) images of congenitally abnormal heart valves to realistic physical models could allow patient-specific simulation of surgical valve repair. We compared materials, processes, and costs for 3D printing and molding of patient-specific models for visualization and surgical simulation of congenitally abnormal heart valves...
November 27, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/29180164/th-17-cytokines-are-associated-with-severity-of-trypanosoma-cruzi-chronic-infection-in-pediatric-patients-from-endemic-areas-of-mexico
#19
Mariana De Alba-Alvarado, Paz María Salazar-Schettino, Luis Jiménez-Álvarez, Margarita Cabrera-Bravo, Cecilia García-Sancho, Edgar Zenteno, Clara Vazquez-Antona, Alfredo Cruz-Lagunas, Joaquín Zúñiga, Martha Irene Bucio-Torres
In Chagas disease the clinical, acute and chronic manifestations are the result of the interaction between the parasite and the host factors. The balance between inflammatory and anti-inflammatory immune responses is essential for the increase or resolution of the manifestations in individuals infected with T. cruzi. To identify if children with chronic Chagas disease and heart injury is related with non-regulated Th1, Th2 and Th17 responses. We included 31 children with T. cruzi confirmed chronic infection from endemic areas of Mexico...
November 24, 2017: Acta Tropica
https://www.readbyqxmd.com/read/29180025/delay-from-diagnosis-to-surgery-in-transferred-type-a-aortic-dissection
#20
William Froehlich, Jip L Tolenaar, Kevin M Harris, Craig Strauss, Thoralf M Sundt, Thomas T Tsai, Mark D Peterson, Arturo Evangelista, Daniel G Montgomery, Eva Kline-Rogers, Christoph A Nienaber, James B Froehlich, Eric M Isselbacher, Kim A Eagle, Santi Trimarchi
OBJECTIVES: To analyze factors associated with delays to surgical management of Type A acute aortic dissection patients enrolled in the International Registry of Acute Aortic Dissection. METHODS: We evaluated 1880 surgically-managed Type A acute aortic dissection patients enrolled between 1996 and 2012 with data for times of diagnosis and surgery, accounting for demographic, clinical and diagnostic variables associated with surgical delay. RESULTS: The majority of patients were transferred (75...
November 24, 2017: American Journal of Medicine
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