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https://www.readbyqxmd.com/read/27921402/developing-a-rat-model-of-dilated-cardiomyopathy-with-improved-survival
#1
Li-Juan Shen, Shu Lu, Yong-Hua Zhou, Lan Li, Qing-Min Xing, Yong-Liang Xu
To compare the continuous infusion and intermittent bolus injection administration protocols of doxorubicin (Dox) under the same cumulative dose (12 mg/kg), and establish a rat dilated cardiomyopathy model with improved survival, a total of 150 Sprague-Dawley (SD) rats were divided into three groups: a control group, administered with normal saline; a Dox 1 group, administration twice a week at 1 mg/kg; a Dox 2, administration once a week at 2 mg/kg. Mortality rates in the Dox 1 and Dox 2 groups were 22% and 48%, respectively (P<0...
2016: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/27921239/cardiac-involvement-in-rheumatoid-arthritis-mimicking-sarcoidosis-on-fdg-pet-ct-and-mr-imaging
#2
Daniel Juneau, Joao R Inacio, Girish Dwivedi, Carole Dennie
No abstract text is available yet for this article.
December 5, 2016: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/27920974/a-case-report-of-malignant-obesity-hypoventilation-syndrome-a-weighty-problem-in-our-icus
#3
Michael Tatusov, Joshua J Joseph, Brian M Cuneo
INTRODUCTION: The obesity epidemic is reflected by increasing numbers of morbidly obese patients being admitted to intensive care units (ICUs). These are complicated patients whose care involves many diagnostic and treatment challenges. We are presenting a fatal case of super obesity, hypoventilation, and multi-organ failure known as malignant obesity hypoventilation syndrome (MOHS). CASE PRESENTATION: 35 year old African American gentleman with a body mass index (BMI) of 115 kg/m(2) presented to the hospital with respiratory distress...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/27920857/aortic-air-embolus-following-pulmonary-tumor-radiofrequency-ablation
#4
Roger Stimpson, Suhag Patel, Rohan Shah, Junjian Huang, Sumit Chhadia, Vivek Yedavalli, Mark Saker
Aortic air embolism following a computed tomography (CT) guided percutaneous transthoracic procedure is a rare occurrence, but one that can have dire consequences. We present a case of a 48-year old female diagnosed with aortic air embolism during percutaneous radiofrequency ablation of a pulmonary mass. A large amount of intra-aortic air can be seen on the CT images just before the patient suffered acute cardiac arrest. Although this is a rare occurrence, recognition and management of this complication is important for physicians who perform any percutaneous transthoracic procedures...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27920843/multimodality-imaging-of-a-cardiac-paraganglioma
#5
Alexandre Semionov, Karl Sayegh
Paragangliomas are rare neuroendocrine tumors arising from the ganglia of the sympathetic or parasympathetic nervous system. Less than 160 cases of intrapericardial or intracardiac paragangliomas have been reported in the English language peer-reviewed medical literature. Here, we report a case of intrapericardial paraganglioma, which illustrates some typical multimodality imaging features of this rare entity.
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27919861/multiparametric-mri-in-differentiating-pulmonary-artery-sarcoma-and-pulmonary-thromboembolism-a-preliminary-experience
#6
Min Liu, Chunhai Luo, Ying Wang, Xiaojuan Guo, Zhanhong Ma, Yuanhua Yang, Tianjing Zhang
PURPOSE: We aimed to define multiparametric magnetic resonance imaging (MRI) findings to differentiate between pulmonary artery sarcoma (PAS) and pulmonary thromboembolism (PTE). METHODS: Eleven patients with suspected PTE were prospectively included to undergo pulmonary MRI before surgery or biopsy. MRI protocol included an unenhanced sequence, diffusion-weighted imaging (DWI, b=800 s/mm2) and a dynamic contrast-enhanced sequence. Morphologic characteristics including distribution, filling defect, and intensity were observed on T1-, T2-, and fat-suppressed T2-weighted imaging, DWI, and contrast-enhanced MRI...
December 6, 2016: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/27919270/delayed-hyperbaric-oxygen-therapy-for-air-emboli-after-open-heart-surgery-case-report-and-review-of-a-success-story
#7
Eva Niyibizi, Guillaume Elyes Kembi, Claude Lae, Rodrigue Pignel, Tornike Sologashvili
BACKGROUND: The current case describes a rare diagnosis of iatrogenic air emboli after elective cardiopulmonary bypass that was successfully treated with delayed hyperbaric oxygen therapy, with good clinical evolution in spite of rare complications. CASE PRESENTATION: A 35 years old male was admitted to the intensive care unit (ICU) for post-operative management after being placed on cardiopulmonary bypass (CPB) for an elective ventricular septal defect closure and aortic valvuloplasty...
December 5, 2016: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/27918725/prevention-and-monitoring-of-cardiac-dysfunction-in-survivors-of-adult-cancers-american-society-of-clinical-oncology-clinical-practice-guideline
#8
Saro H Armenian, Christina Lacchetti, Ana Barac, Joseph Carver, Louis S Constine, Neelima Denduluri, Susan Dent, Pamela S Douglas, Jean-Bernard Durand, Michael Ewer, Carol Fabian, Melissa Hudson, Mariell Jessup, Lee W Jones, Bonnie Ky, Erica L Mayer, Javid Moslehi, Kevin Oeffinger, Katharine Ray, Kathryn Ruddy, Daniel Lenihan
Purpose Cardiac dysfunction is a serious adverse effect of certain cancer-directed therapies that can interfere with the efficacy of treatment, decrease quality of life, or impact the actual survival of the patient with cancer. The purpose of this effort was to develop recommendations for prevention and monitoring of cardiac dysfunction in survivors of adult-onset cancers. Methods Recommendations were developed by an expert panel with multidisciplinary representation using a systematic review (1996 to 2016) of meta-analyses, randomized clinical trials, observational studies, and clinical experience...
December 5, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/27918096/back-cover-story-eur-j-immunol-12-16
#9
(no author information available yet)
Our back cover features an H&E stained biopsy section from a patient with eosinophilic myocarditis. Countless heart-infiltrating eosinophils with bright pink granules and bi-lobed nuclei are visible between large, striated cardiomyocytes. In addition, T cells and macrophages are infiltrating the heart. This image relates to the article by Diny et al. (pp. 2749-2760), in which the authors analyze the pathway required for eosinophil trafficking to the heart by examining heart biopsies from myocarditis patients and a murine myocarditis model...
December 2016: European Journal of Immunology
https://www.readbyqxmd.com/read/27916663/monitoring-cardiac-and-respiratory-physiology-during-fmri
#10
Daniel Bulte, Karolina Wartolowska
This article will consider how physiological monitoring can be used both as an intrinsic part of an experiment, or for removing unwanted physiological signals from the FMRI time series. As functional MRI is used for a wide variety of applications beyond the identification of regions involved in a task, different sources of noise in the time series become important. The use of arterial spin labelling sequences, either in isolation or combined with BOLD imaging, means that temporal noise must be dealt with differently...
December 1, 2016: NeuroImage
https://www.readbyqxmd.com/read/27916237/transesophageal-speckle-tracking-echocardiography-improves-right-ventricular-systolic-function-assessment-in-the-perioperative-setting
#11
Nicholas W Markin, Mohammed Chamsi-Pasha, Jiangtao Luo, Walker R Thomas, Tara R Brakke, Thomas R Porter, Sasha K Shillcutt
BACKGROUND: Perioperative evaluation of right ventricular (RV) systolic function is important to follow intraoperative changes, but it is often not possible to assess with transthoracic echocardiographic (TTE) imaging, because of surgical field constraints. Echocardiographic RV quantification is most commonly performed using tricuspid annular plane systolic excursion (TAPSE), but it is not clear whether this method works with transesophageal echocardiographic (TEE) imaging. This study was performed to evaluate the relationship between TTE and TEE TAPSE distances measured with M-mode imaging and in comparison with speckle-tracking TTE and TEE measurements...
December 1, 2016: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/27916212/shock-index-as-a-predictor-of-myocardial-injury-in-st-segment-elevation-myocardial-infarction
#12
Jin Kyung Hwang, Woo Jin Jang, Young Bin Song, Joao A C Lima, Eliseo Guallar, Yeon Hyeon Choe, Soonuk Choi, Eun Kyoung Kim, Joo-Yong Hahn, Seung-Hyuk Choi, Sang-Chol Lee, Hyeon-Cheol Gwon
BACKGROUND: Little is known about the association between shock index and myocardial injury in patients with ST-segment elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI). METHODS: We analyzed cardiac magnetic resonance imaging from 306 consecutive patients treated with primary PCI for STEMI. The patients were divided into the following 2 groups: initial shock index >0.7 (n = 88) and ≤0.7 (n = 218). Shock index was calculated as the ratio of heart rate to systolic blood pressure based on the first recorded vital signs upon arrival...
December 2016: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/27914791/aberrant-developmental-titin-splicing-and-dysregulated-sarcomere-length-in-thymosin-%C3%AE-4-knockout-mice
#13
Nicola Smart, Johannes Riegler, Cameron W Turtle, Craig A Lygate, Debra J McAndrew, Katja Gehmlich, Karina N Dubé, Anthony N Price, Vivek Muthurangu, Andrew M Taylor, Mark F Lythgoe, Charles Redwood, Paul R Riley
Sarcomere assembly is a highly orchestrated and dynamic process which adapts, during perinatal development, to accommodate growth of the heart. Sarcomeric components, including titin, undergo an isoform transition to adjust ventricular filling. Many sarcomeric genes have been implicated in congenital cardiomyopathies, such that understanding developmental sarcomere transitions will inform the aetiology and treatment. We sought to determine whether Thymosin β4 (Tβ4), a peptide that regulates the availability of actin monomers for polymerization in non-muscle cells, plays a role in sarcomere assembly during cardiac morphogenesis and influences adult cardiac function...
November 30, 2016: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/27914502/rationale-and-design-of-the-progression-of-atherosclerotic-plaque-determined-by-computed-tomographic-angiography-imaging-paradigm-registry-a-comprehensive-exploration-of-plaque-progression-and-its-impact-on-clinical-outcomes-from-a-multicenter-serial-coronary
#14
Sang-Eun Lee, Hyuk-Jae Chang, Asim Rizvi, Martin Hadamitzky, Yong-Jin Kim, Edoardo Conte, Daniele Andreini, Gianluca Pontone, Valentina Volpato, Matthew J Budoff, Ilan Gottlieb, Byoung Kwon Lee, Eun Ju Chun, Filippo Cademartiri, Erica Maffei, Hugo Marques, Jonathon A Leipsic, Sanghoon Shin, Jung Hyun Choi, Namsik Chung, James K Min
BACKGROUND: The natural history of coronary artery disease (CAD) in patients with low-to-intermediate risk is not well characterized. Although earlier invasive serial studies have documented the progression of atherosclerotic burden, most were focused on high-risk patients only. The PARADIGM registry is a large, prospective, multinational dynamic observational registry of patients undergoing serial coronary computed tomographic angiography (CCTA). The primary aim of PARADIGM is to characterize the natural history of CAD in relation to clinical and laboratory data...
December 2016: American Heart Journal
https://www.readbyqxmd.com/read/27913400/incidence-risk-factors-and-outcome-of-life-threatening-ventricular-arrhythmias-in-giant-cell-myocarditis
#15
Kaj Ekström, Jukka Lehtonen, Riina Kandolin, Anne Räisänen-Sokolowski, Kaisa Salmenkivi, Markku Kupari
BACKGROUND: Ventricular tachyarrhythmias are characteristic of giant cell myocarditis, but their true incidence, predictors, and outcome are unknown. METHODS AND RESULTS: Our work involved 51 patients with giant cell myocarditis (35 women) aged 52±12 years. Their medical records were reviewed for history, results of laboratory and imaging studies, and occurrence of serious cardiac events, including life-threatening ventricular tachyarrhythmias. Sudden cardiac death (fatal or aborted) was the primary end point of our analyses, whereas the composite of sudden cardiac death and ventricular tachycardia requiring treatment constituted the secondary end point...
December 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/27913338/intracardiac-vortex-dynamics-by-high-frame-rate-doppler-vortography-i-in-vivo-i-comparison-with-vector-flow-mapping-and-4-d-flow-mri
#16
Julia Faurie, Mathilde Baudet, Kondo Claude Assi, Dominique Auger, Guillaume Gilbert, Francois Tournoux, Damien Garcia
Recent studies have suggested that intracardiac vortex flow imaging could be of clinical interest to early diagnose the diastolic heart function. Doppler vortography has been intro-duced as a simple color Doppler method to detect and quantify intraventricular vortices. This method is able to locate a vortex core based on the recognition of an antisymmetric pattern in the Doppler velocity field. Because the heart is a fast-moving organ, high frame rates are needed to decipher the whole blood vortex dynamics during diastole...
November 29, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27913009/quantitative-changes-in-late-gadolinium-enhancement-at-cardiac-magnetic-resonance-in-the-early-phase-of-acute-myocarditis
#17
Enrico Ammirati, Francesco Moroni, Paola Sormani, Angelica Peritore, Angela Milazzo, Giuseppina Quattrocchi, Manlio Cipriani, Fabrizio Oliva, Cristina Giannattasio, Maria Frigerio, Alberto Roghi, Paolo G Camici, Patrizia Pedrotti
BACKGROUND: The presence of late gadolinium enhancement (LGE) at cardiac magnetic resonance (CMR) has diagnostic and prognostic value in patients with acute myocarditis (AM). Aim of our study was to quantify the changes in LGE extension (LGE%) early after AM and evaluate its relations with biventricular function and morphology. METHODS: We investigated 76 consecutive patients with AM (acute onset of chest pain/heart failure/ventricular arrhythmias not explained by other causes, and raised troponin) that met CMR criteria based on myocardial oedema at T2-weighted images and LGE on post-contrast images at median time of 6days from onset of symptoms...
November 23, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27912983/hypertrophic-obstructive-cardiomyopathy
#18
REVIEW
Josef Veselka, Nandan S Anavekar, Philippe Charron
Hypertrophic obstructive cardiomyopathy is an inherited myocardial disease defined by cardiac hypertrophy (wall thickness ≥15 mm) that is not explained by abnormal loading conditions, and left ventricular obstruction greater than or equal to 30 mm Hg. Typical symptoms include dyspnoea, chest pain, palpitations, and syncope. The diagnosis is usually suspected on clinical examination and confirmed by imaging. Some patients are at increased risk of sudden cardiac death, heart failure, and atrial fibrillation...
November 29, 2016: Lancet
https://www.readbyqxmd.com/read/27912890/persistence-of-123-i-mibg-prognostic-capability-in-relation-to-medical-therapy-in-heart-failure-from-the-admire-hf-trial
#19
Ileana L Piña, Peter Carson, JoAnn Lindenfeld, W Tad Archambault, Arnold F Jacobson
(123)I-mIBG imaging has been evaluated to assess sympathetic function and prognosis in heart failure (HF). However, the effect of combined HF medical therapies on (123)I-mIBG uptake and its prognostic significance has not been previously examined. This analysis examined the relation between the intensity of guideline-directed HF medical therapy and global (123)I-mIBG cardiac uptake in the AdreView Myocardial Imaging for Risk Evaluation in Heart Failure (ADMIRE-HF) database. A second objective was to investigate whether this guideline-based therapy, measured by total medication doses, had the expected effect on outcome, that is, that patients with higher (123)I-mIBG cardiac uptake and more intensive medical therapy had the fewest outcome events...
October 31, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27910780/naringenin-ameliorates-doxorubicin-toxicity-and-hypoxic-condition-in-dalton-s-lymphoma-ascites-tumor-mouse-model-evidence-from-electron-paramagnetic-resonance-imaging
#20
Venkatesan Kathiresan, Swathika Subburaman, Arun Venkatesh Krishna, Mathivanan Natarajan, Gandhidasan Rathinasamy, Kumaresan Ganesan, Murugesan Ramachandran
Doxorubicin (DOX) is a well-known cytotoxic agent used extensively as a chemotherapeutic drug to eradicate a wide variety of human cancers. Reactive oxygen species (ROS)-mediated oxidative stress during DOX treatment can induce cardiac, renal, and hepatic toxicities, which can constrain its use as a potential cytotoxic agent. The present work investigates the antioxidant potential of naringenin (NAR) against DOXinduced toxicities of a Dalton's lymphoma ascites (DLA) tumor-bearing mouse model. Mice were randomized into four groups: a negative control, positive control, DOX (2...
2016: Journal of Environmental Pathology, Toxicology and Oncology
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