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https://www.readbyqxmd.com/read/28088193/invasive-cardiac-lipoma-a-case-report-and-review-of-literature
#1
Jason D'Souza, Rajesh Shah, Aamer Abbass, Jeremy R Burt, Aditya Goud, Chanukya Dahagam
BACKGROUND: Cardiac lipomas are rare benign tumors of the heart. They are usually asymptomatic and are thus most often diagnosed on autopsies. Symptoms, when present, depend upon the location within the heart. Typical locations are the endocardium of the right atrium and the left ventricle. Diagnostic modality of choice is cardiac MRI. Treatment guidelines have not yet been established due to the very low prevalence of these tumors and are thus guided by the patient's symptomatology. CASE PRESENTATION: We describe a case of an invasive cardiac lipoma, wherein the initial symptom of the patient was shortness of breath...
January 14, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28087964/arrythmogenic-right-ventricular-dysplasia
#2
M K Anis Munirah, W K Lim, I M Sharifah Ainon
A 10-year-old well and asymptomatic female was referred for screening of acute right ventricular dilatation (ARVD) as she had an elder brother diagnosed with ARVD whom died of sudden cardiac death. Electrocardiography (ECG), transthoracic echocardiography (TTE) and cardiac magnetic resonance imaging (CMR) were performed. Results of these investigations were suggestive of ARVD. Despite being a rare cardiac disease and largely unrecognised in children and young adult population, ARVD is an important cause of ventricular arrhythmias in this group of patients and is one of the causes of sudden cardiac death (SCD) in this population...
December 2016: Medical Journal of Malaysia
https://www.readbyqxmd.com/read/28087564/right-ventricular-ejection-fraction-is-incremental-to-left-ventricular-ejection-fraction-for-the-prediction-of-future-arrhythmic-events-in-patients-with-systolic-dysfunction
#3
Yoko Mikami, Umjeet Jolly, Bobak Heydari, Mingkai Peng, Fahad Almehmadi, Mohammed Zahrani, Mahmoud Bokhari, John Stirrat, Carmen P Lydell, Andrew G Howarth, Raymond Yee, James A White
BACKGROUND: Left ventricular ejection fraction remains the primary risk stratification tool used in the selection of patients for implantable cardioverter defibrillator therapy. However, this solitary marker fails to identify a substantial portion of patients experiencing sudden cardiac arrest. In this study, we examined the incremental value of considering right ventricular ejection fraction for the prediction of future arrhythmic events in patients with systolic dysfunction using the gold standard of cardiovascular magnetic resonance...
January 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28087519/sympathetic-modulation-of-electrical-activation-in-normal-and-infarcted-myocardium-implications-for-arrhythmogenesis
#4
Olujimi A Ajijola, Robert L Lux, Anadjeet Khahera, OhJin Kwon, Eric Aliotta, Daniel Ennis, Michael C Fishbein, Jeffrey Laurence Ardell, Kalyanam Shivkumar
: Background The influence of cardiac sympathetic innervation on electrical activation in normal and chronically infarcted ventricular myocardium is not understood. Methods and Results Yorkshire pigs with normal hearts (NL, n=12) or anterior myocardial infarction (MI, n=9) underwent high-resolution mapping of the anteroapical left ventricle, at baseline, and during left and right stellate ganglion stimulation (LSGS & RSGS, respectively). Conduction velocity (CV), activation times (AT), & directionality of propagation were measured...
January 13, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28087158/echocardiographic-approach-to-cardiac-tamponade-in-critically-ill-patients
#5
REVIEW
Peter McCanny, Frances Colreavy
Cardiac tamponade should be considered in a critically ill patient in whom the cause of haemodynamic shock is unclear. When considering tamponade, transthoracic echocardiography plays an essential role and is the initial investigation of choice. Diagnostic sensitivity of transthoracic echocardiography is dependent on image quality, and in some cases a transoesophageal approach may be required to confirm the diagnosis. Knowledge of the pathophysiology and echocardiographic features of cardiac tamponade are essential for the practicing Intensivist...
December 24, 2016: Journal of Critical Care
https://www.readbyqxmd.com/read/28087126/cardiac-lymphatics-a-new-avenue-for-therapeutics
#6
REVIEW
Taina Vuorio, Annakaisa Tirronen, Seppo Ylä-Herttuala
Recent progress in lymphatic vessel biology and in novel imaging techniques has established the importance of the lymphatic vasculature as part of the cardiovascular system. The lymphatic vessel network regulates many physiological processes important for heart function such as fluid balance, transport of extravasated proteins, and trafficking of immune cells. Therefore, lymphangiogenic therapy could be beneficial in the treatment of cardiovascular diseases, for example by improving reverse cholesterol transport (RCT) from atherosclerotic lesions or by resolving edema and fibrosis after myocardial infarction...
January 10, 2017: Trends in Endocrinology and Metabolism: TEM
https://www.readbyqxmd.com/read/28081214/cold-pressor-stress-cardiac-magnetic-resonance-myocardial-flow-reserve-is-not-useful-for-detection-of-coronary-endothelial-dysfunction-in-women-with-signs-and-symptoms-of-ischemia-and-no-obstructive-cad
#7
Sofy Landes, Sherwin Dela Cruz, Janet Wei, Ahmed AlBadri, Chrisandra Shufelt, Puja Mehta, Louise E Thomson, Marcio A Diniz, Xiao Zhang, John W Petersen, R David Anderson, Carl J Pepine, Daniel S Berman, C Noel Bairey Merz
BACKGROUND: Coronary endothelial function testing using acetylcholine is not routinely available, while non-pharmacological cold pressor testing (CPT) is considered an endothelial stressor. Noninvasive cardiac magnetic resonance imaging (CMRI) myocardial perfusion reserve index (MPRI) can detect coronary microvascular dysfunction (CMD). We evaluated if CPT stress CMRI MPRI could detect invasive coronary endothelial dysfunction. METHODS: Coronary reactivity testing was performed in 189 women with symptoms and signs of ischemic but no obstructive coronary artery disease as previously described plus CPT stress...
2017: PloS One
https://www.readbyqxmd.com/read/28081128/radiation-exposure-from-diagnostic-imaging-in-a-cohort-of-pediatric-transplant-recipients
#8
Alexandra Seal, Michael Hawkes, Ravi Bhargava, Michelle Noga, Jutta Preiksaitis, Curtis Mabilangan, Joan Robinson
Recipients of solid organ transplants (SOT) have extensive diagnostic imaging (DI). The purpose of this study was to quantify this exposure. Children from northern Alberta with SOTs at Stollery Children's Hospital, Edmonton, Alberta January 1, 2006, to July 31, 2012, were included. Effective doses of radiation were estimated using published norms for DI performed post-transplant up to October 16, 2014. The 54 eligible children had 6215 DI studies (5628 plain films, 293 computerized tomography (CT) scans, 149 positron emission topography (PET) -CT scans, 47 nuclear medicine scans and 98 cardiac catheterizations)...
2017: PloS One
https://www.readbyqxmd.com/read/28080965/feeling-learning-from-and-being-aware-of-inner-states-interoceptive-dimensions-in-neurodegeneration-and-stroke
#9
Indira García-Cordero, Lucas Sedeño, Laura de la Fuente, Andrea Slachevsky, Gonzalo Forno, Francisco Klein, Patricia Lillo, Jesica Ferrari, Clara Rodriguez, Julian Bustin, Teresa Torralva, Sandra Baez, Adrian Yoris, Sol Esteves, Margherita Melloni, Paula Salamone, David Huepe, Facundo Manes, Adolfo M García, Agustín Ibañez
Interoception is a complex process encompassing multiple dimensions, such as accuracy, learning and awareness. Here, we examined whether each of those dimensions relies on specialized neural regions distributed throughout the vast interoceptive network. To this end, we obtained relevant measures of cardiac interoception in healthy subjects and patients offering contrastive lesion models of neurodegeneration and focal brain damage: behavioural variant fronto-temporal dementia (bvFTD), Alzheimer's disease (AD) and fronto-insular stroke...
November 19, 2016: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28079767/primary-gastric-choriocarcinoma-presenting-as-a-pregnancy-of-unknown-location
#10
Alyssa Larish, Amanika Kumar, Sarah Kerr, Carrie Langstraat
BACKGROUND: Pregnancy of unknown location presents a diagnostic challenge, in rare occasions leading to the diagnosis of malignancy. We describe a case of β-hCG-secreting nongestational primary gastric choriocarcinoma presenting as a pregnancy of unknown location. CASE: A 37-year-old woman, gravida 4 para 3013, presented with several days of vaginal bleeding and rising β-hCG level without ultrasound localization of pregnancy. The diagnosis of pregnancy of unknown location was made and methotrexate administered at a β-hCG level of 7,779 milli-international units/mL...
January 9, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28077904/regadenoson-in-myocardial-perfusion-study-first-institutional-experiences-in-bosnia-and-herzegovina
#11
Nermina Beslic, Renata Milardovic, Amera Sadija, Sejla Ceric, Zeljka Raic
INTRODUCTION: Myocardial perfusion imaging (MPI) is widely used in the evaluation of known and suspected coronary artery disease (CAD). Imaging of heart in stress and rest enables the comparison of myocardial uptake of radiotracer in proportion to the needs and coronary flow, which is used for detection of perfusion defects. Exercise stress and pharmacologic agents are used for the stressing purpose. Novel pharmacologic stressor regadenoson is A2A selective adenosine agonist, which selectively binds to the adenosine receptors in coronary arteries causing coronary dilatation...
December 2016: Acta Informatica Medica: AIM
https://www.readbyqxmd.com/read/28077373/determination-of-renal-function-and-injury-using-near-infrared-fluorimetry-in-experimental-cardiorenal-syndrome
#12
Mizuko Ikeda, Rumie Wakasaki, Katie J Schenning, Thomas Swide, Jeong Heon Lee, M Bernie Miller, Hak Soo Choi, Sharon Anderson, Michael P Hutchens
Cardiorenal syndrome type 1 causes acute kidney injury but is poorly understood; animal models and diagnostic aids are lacking. Robust noninvasive measurements of glomerular filtration rate are required for injury models and clinical use. Several have been described but are untested in translational models and suffer from biologic interference. We developed a mouse model of cardiorenal syndrome and tested the novel near-infrared fluorophore, ZW800-1, to assess renal and cardiac function. We performed murine cardiac arrest and cardiopulmonary resuscitation followed by transthoracic echocardiography, 2- and 24h later...
January 11, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28076337/coded-excitation-for-diverging-wave-cardiac-imaging-a-feasibility-study
#13
Feifei Zhao, Ling Tong, Qiong He, Jianwen Luo
Diverging wave (DW) based cardiac imaging has gained increasing interest in recent years given its capacity to achieve ultrahigh frame rate. However, the signal-to-noise ratio (SNR), contrast, and penetration depth of the resulting B-mode images are typically low as DWs spread energy over a large region. Coded excitation is known to be capable of increasing the SNR and penetration for ultrasound imaging. The aim of this study was therefore to test the feasibility of applying coded excitation in DW imaging to improve the corresponding SNR, contrast and penetration depth...
January 11, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28076004/fetal-cardiac-screening-sonography-methodology-women-s-imaging
#14
Aman Khurana, Ashley Burt, Graham Beck, Tracy Anton, Mishella Perez, Denis Levy, Dolores Pretorius
No abstract text is available yet for this article.
January 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28075037/gauging-the-response-to-cardiac-resynchronization-therapy-the-important-interplay-between-predictor-variables-and-definition-of-a-favorable-outcome
#15
Milan Petrovic, Marija Petrovic, Goran Milasinovic, Bosiljka Vujisic Tesic, Danijela Trifunovic, Olga Petrovic, Ivana Nedeljkovic, Ivana Petrovic, Marko Banovic, Marija Boricic-Kostic, Jelena Petrovic, Ross Arena, Dejana Popovic
AIMS: Selection of patients who are viable candidates for cardiac resynchronization therapy (CRT), prediction of the response to CRT as well as an optimal definition of a favorable response, all require further exploration. The purpose of this study was to evaluate the interplay between the prediction of the response to CRT and the definition of a favorable outcome. METHODS: Seventy patients who received CRT were included. All patients met current guideline criteria for CRT...
January 11, 2017: Echocardiography
https://www.readbyqxmd.com/read/28074492/confirmation-of-resting-state-bold-fluctuations-in-the-human-brainstem-and-spinal-cord-after-identification-and-removal-of-physiological-noise
#16
Shreyas Harita, Patrick W Stroman
PURPOSE: Resting-state functional MRI (rs-fMRI) has been used to investigate networks within the cortex, but its use in the brainstem (BS) and spinal cord (SC) has been limited. This region presents challenges for fMRI, partly because of sources of physiological noise. This study aims to quantify noise contributions to rs-fMRI, and to obtain evidence of resting-state blood oxygenation level-dependent (BOLD) fluctuations. METHODS: Resting-state-fMRI data were obtained from the BS/SC in 16 participants, at 3 Tesla, with T2 -weighted single-shot fast spin-echo imaging...
January 11, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28073992/low-productivity-of-stress-cardiac-magnetic-resonance-imaging-for-screening-of-coronary-artery-disease
#17
EDITORIAL
Marko Boban, Vladimir Pesa
No abstract text is available yet for this article.
January 10, 2017: Postgraduate Medical Journal
https://www.readbyqxmd.com/read/28073805/sheet-like-remodeling-of-the-transverse-tubular-system-in-human-heart-failure-impairs-excitation-contraction-coupling-and-functional-recovery-by-mechanical-unloading
#18
Thomas Seidel, Sutip Navankasattusas, Azmi A Ahmad, Nikolaos A Diakos, Weining D Xu, Martin Tristani-Firouzi, Michael Bonios, Iosif Taleb, Dean Y Li, Craig H Selzman, Stavros G Drakos, Frank B Sachse
BACKGROUND: -Cardiac recovery in response to mechanical unloading by left ventricular assist devices (LVADs) has been demonstrated in subgroups of chronic heart failure (HF) patients. Hallmarks of HF are depletion and disorganization of the transverse tubular system (t-system) in cardiomyocytes. Here, we investigated remodeling of the t-system in human end-stage HF and its role in cardiac recovery. METHODS: -Left ventricular biopsies were obtained from 5 donors (CTRL) and 26 chronic HF patients undergoing implantation of LVADs...
January 10, 2017: Circulation
https://www.readbyqxmd.com/read/28073803/abdominal-aortic-occlusion-caused-by-a-cardiac-myxoma-a-multi-modality-imaging-approach
#19
Marco Zuin, Alberto Sacco, Luca Pisano, Mara Olga Bernasconi, Loris Roncon
No abstract text is available yet for this article.
January 10, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28073593/integrative-cardiopulmonary-ultrasound-for-interstitial-lung-disease-assessment-correlation-between-lung-ultrasound-performance-and-cardiac-involvement
#20
Wei-Wei Zhu, Yi-Dan Li, Hong Li, Xiu-Zhang Lu, Ling-Yun Kong, Xiao-Guang Ye, Qi-Zhe Cai, Lan-Lan Sun, Wei Jiang, Li Wang
The aims of this study were to apply integrative cardiopulmonary ultrasound (thoracic ultrasound) to the evaluation of patients with interstitial lung disease (ILD) and to determine the relationship between lung ultrasound signs and echocardiographic parameters such as systolic pulmonary artery pressure (SPAP) and various right ventricular parameters. ILD patients and healthy controls underwent lung ultrasound (LUS) and echocardiographic tests. In addition to traditional echocardiographic parameters, right ventricular free wall longitudinal strain (RVLS_FW) was measured using 2-D speckle-tracking echocardiography...
January 7, 2017: Ultrasound in Medicine & Biology
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