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Cardiac ultrasound

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https://www.readbyqxmd.com/read/28728780/detecting-regional-stiffness-changes-in-aortic-aneurysmal-geometries-using-pressure-normalized-strain
#1
Doran S Mix, Ling Yang, Camille C Johnson, Nathan Couper, Ben Zarras, Isaac Arabadjis, Lauren E Trakimas, Michael C Stoner, Steven W Day, Michael S Richards
Transabdominal ultrasound elasticity imaging could improve the assessment of rupture risk for abdominal aortic aneurysms by providing information on the mechanical properties and stress or strain states of vessel walls. We implemented a non-rigid image registration method to visualize the pressure-normalized strain within vascular tissues and adapted it to measure total strain over an entire cardiac cycle. We validated the algorithm's performance with both simulated ultrasound images with known principal strains and anatomically accurate heterogeneous polyvinyl alcohol cryogel vessel phantoms...
July 17, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28725332/thyrotoxic-valvulopathy-case-report-and-review-of-the-literature
#2
Keniel Pierre, Sushee Gadde, Bassam Omar, G Mustafa Awan, Christopher Malozzi
We report a 42-year-old female who was admitted for abdominal pain, and also endorsed dyspnea, fatigue and chronic palpitations. Past medical history included asthma, patent ductus arteriosus repaired in childhood and ill-defined thyroid disease. Physical examination revealed blood pressure of 136/88 mm Hg and heart rate of 149 beats per minute. Cardiovascular exam revealed an irregularly irregular rhythm, and pulmonary exam revealed mild expiratory wheezing. Abdomen was tender. Electrocardiogram revealed atrial fibrillation with rapid ventricular response which responded to intravenous diltiazem...
June 2017: Cardiology Research
https://www.readbyqxmd.com/read/28724473/imagessecondary-cardiac-cancer-mimicking-inferior-st-elevation-myocardial-infarction-diagnosed-using-point-of-care-ultrasound-in-the-emergency-department
#3
Taft Micks, Patricia Kousaie, Aaron Guinn
No abstract text is available yet for this article.
July 20, 2017: CJEM
https://www.readbyqxmd.com/read/28724126/comparative-outcomes-after-percutaneous-coronary-intervention-among-black-and-white-patients-treated-at-us-veterans-affairs-hospitals
#4
Taisei Kobayashi, Thomas J Glorioso, Ehrin J Armstrong, Thomas M Maddox, Mary E Plomondon, Gary K Grunwald, Steven M Bradley, Thomas T Tsai, Stephen W Waldo, Sunil V Rao, Subhash Banerjee, Brahmajee K Nallamothu, Deepak L Bhatt, A Garvey Rene, Robert L Wilensky, Peter W Groeneveld, Jay Giri
Importance: Current comparative outcomes among black and white patients treated with percutaneous coronary intervention (PCI) in the Veterans Affairs (VA) health system are not known. Objective: To compare outcomes between black and white patients undergoing PCI in the VA health system. Design, Setting, and Participants: This study compared black and white patients who underwent PCI between October 1, 2007, and September 30, 2013, at 63 VA hospitals using data recorded in the VA Clinical Assessment, Reporting, and Tracking System for Cardiac Catheterization Laboratories (CART-CL) program...
July 19, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28723764/increased-nuchal-translucency-in-fetuses-with-a-normal-karyotype-diagnosis-and-management-an-observational-study
#5
Demetra Socolov, Razvan Socolov, Vlad Eusebiu Gorduza, Tudor Butureanu, Ruxandra Stanculescu, Alexandru Carauleanu, Ioana Pavaleanu
The use of nuchal translucency (NT) in 1992 by Nicolaides et al was a major breakthrough in screening for chromosomal aneuploidies at the end of the first trimester. However, pathological conditions other than chromosomal aneuploidies are also associated with increased NT, which can also be detected in normal fetuses. This study sought to evaluate the causes of this ultrasound sign in a group of patients from Iasi, Romania.During the decade-long study period, there were 71 certified cases involving increased NT; the patients in these cases underwent diagnostic amniocentesis and karyotyping...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28721492/peristaltic-like-motion-of-the-human-fetal-right-ventricle-and-its-effects-on-fluid-dynamics-and-energy-dynamics
#6
Hadi Wiputra, Guat Ling Lim, Khong Chun Chua, R Nivetha, Sanah Merchant Soomar, Arijit Biwas, Citra Nurfarah Zaini Mattar, Hwa Liang Leo, Choon Hwai Yap
In both adult human and canine, the cardiac right ventricle (RV) is known to exhibit a peristaltic-like motion, where RV sinus (inflow region) contracts first and the infundibulum (outflow region) later, in a wave-like contraction motion. The delay in contraction between the sinus and infundibulum averaged at 15% of the cardiac cycle and was estimated to produce an intra-ventricular pressure difference of 15 mmHg. However, whether such a contractile motion occurs in human fetuses as well, its effects on hemodynamics remains unknown, and are the subject of the current study...
July 18, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28718042/contrast-enhanced-ultrasound-for-focal-liver-lesions-how-accurate-is-it
#7
Richard G Barr
With the recent FDA approval for characterization of focal liver lesions (FLL) in both pediatric and adult patients using Lumason (sulfur hexafluoride microbubbles), increased use of ultrasound contrast for routine clinical use is expected. This agent has been available for many years in Europe and Asia, and a large body of literature is available regarding the sensitivity and specificity of this agent. In addition, a few studies have directly compared CEUS to CECT and CEMRI for the characterization of focal liver lesions...
July 17, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28715070/evaluation-of-the-relationship-between-renal-resistive-index-and-extensivity-and-complexity-of-coronary-artery-disease-in-patients-with-acute-coronary-syndrome
#8
Alaa Quisi, Ibrahim Halil Kurt, Durmuş Yıldıray Şahin, Onur Kaypaklı, Gökhan Söker, Ömer Kaya, Samir Allahverdiyev, Ömer Genç, Gökhan Alıcı, Mevlüt Koç
BACKGROUND: Despite the advances in cardiovascular medicine, acute coronary syndrome (ACS) is still a major cause of morbidity and mortality worldwide. Synergy between PCI ™ with TAXUS and Cardiac Surgery (SYNTAX) score is used to determine the extensivity and complexity of coronary artery disease (CAD). Renal resistive index (RRI), a renal Doppler ultrasound parameter, is used to detect renal hemodynamics. Although some risk factors for CAD, including hypertension and diabetes mellitus were demonstrated to have an association with RRI, direct relationship between the presence...
July 17, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28712813/factors-affecting-operative-time-and-outcome-of-carotid-endarterectomy-in-the-vascular-quality-initiative
#9
Jennifer L Perri, Brian W Nolan, Philip P Goodney, Randall R DeMartino, Benjamin S Brooke, Shipra Arya, Mark F Conrad, Jack L Cronenwett
OBJECTIVE: Prior studies have suggested a relationship between operative (Op) time and outcome after major vascular procedures. This study analyzed factors associated with Op time and outcome after carotid endarterectomy (CEA) in the Vascular Quality Initiative (VQI) registry. METHODS: Elective, primary CEAs without high anatomic risk or concomitant procedures from 2012 to 2015 in the VQI were analyzed (N = 26,327, performed by 1188 surgeons from 249 centers). Multivariable analysis was used to identify patient, procedure, and surgeon factors associated with Op time and major adverse events (MAEs), categorized as either technical (ipsilateral stroke, cranial nerve injury, reoperation) or cardiac (myocardial infarction, congestive heart failure, dysrhythmia requiring treatment, surgical site infection, and death)...
July 13, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28712584/the-advantage-of-early-plication-in-children-diagnosed-with-diaphragm-paresis
#10
Alejandro A Floh, Intikhab Zafurallah, Cathy MacDonald, Osami Honjo, Chun-Po S Fan, Peter C Laussen
BACKGROUND: In this single-center study, we sought to determine the frequency of phrenic nerve injury leading to diaphragm paresis (DP) in children following open cardiac surgery over the last 10 years, and to identify possible variables that predict the need for plication and associated clinical outcomes. METHODS: Patients diagnosed with DP were identified from departmental databases and a review of clinical diaphragm ultrasound images. A cohort was analyzed for predictors of diaphragm plication and associations with clinical outcomes...
June 15, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28710605/current-clinical-applications-of-coronary-optical-coherence-tomography
#11
REVIEW
Teruyoshi Kume, Shiro Uemura
Optical coherence tomography (OCT) is an intra-coronary diagnostic technique that provides detailed imagings of blood vessels in the current cardiac catheterization laboratory. The higher resolution of OCT often provides superior delineation of each structure compared with intravascular ultrasound (IVUS), and it can reliably visualize the microstructure of normal and diseased arteries. The capabilities of OCT are well suited for the identification of calcified plaque and neointima formation after stent implantation...
July 14, 2017: Cardiovascular Intervention and Therapeutics
https://www.readbyqxmd.com/read/28709156/gastrointestinal-impedance-spectroscopy-to-detect-hypoperfusion-during-hemorrhage
#12
Andreas Bloch, Andreas Kohler, Horst Posthaus, David Berger, Laura Santos, Stephan Jakob, Jukka Takala, Matthias Haenggi
BACKGROUND: Changes in tissue impedance (Ω) have been proposed as early signs of impaired tissue perfusion. We hypothesized that hemorrhage may induce early changes in alimentary tract tissue impedance and that these can be detected by impedance spectroscopy. We evaluated impedance spectroscopy in an acute hemorrhage model in pigs. METHODS: Twenty anesthetized pigs were randomized to stepwise hemorrhage to mean arterial blood pressure (MAP) targets of 60 mm Hg, 50 mm Hg, 45 mm Hg, and 40 mm Hg, followed by retransfusion in two steps, or control (n = 10 each)...
August 2017: Shock
https://www.readbyqxmd.com/read/28708548/predicting-locations-of-high-risk-plaques-in-coronary-arteries-in-patients-receiving-statin-therapy
#13
Ling Zhang, Andreas Wahle, Zhi Chen, John J Lopez, Tomas Kovarnik, Milan Sonka
Features of high-risk coronary artery plaques prone to major adverse cardiac events (MACE) were identified by intravascular ultrasound (IVUS) virtual histology (VH). These plaque features are: Thin-cap fibroatheroma (TCFA), plaque burden PB≥70%, or minimal luminal area MLA≤4mm². Identification of arterial locations likely to later develop such high-risk plaques may help prevent MACE. We report a machine learning method for prediction of future high-risk coronary plaque locations and types in patients under statin therapy...
July 11, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28708034/ultrasound-guided-percutaneous-common-carotid-artery-access-in-piglets-for-intracoronary-stem-cell-infusion
#14
Jason H Anderson, Nathaniel W Taggart, Sarah L Edgerton, Susana Cantero Peral, Kimberly A Holst, Frank Cetta
In pigs, the deep location of the common carotid artery and overlying sternomastoideus muscle in the neck has led to the recommendation for a surgical cutdown for common carotid access, as opposed to minimally invasive techniques for vascular access. We sought to determine if direct percutaneous common carotid artery access in piglets is attainable. Seventeen piglets were anesthetized and intubated. Under two-dimensional and color flow Doppler ultrasound guidance, a 21 gauge needle was utilized to access the right common carotid artery...
January 1, 2017: Laboratory Animals
https://www.readbyqxmd.com/read/28699175/long-term-health-outcomes-of-adults-with-mccune-albright-syndrome
#15
S C Wong, M Zacharin
CONTEXT: McCune Albright Syndrome (MAS) is associated with numerous health problems. Comprehensive long term health problems of adults with MAS are less well defined in the literature. OBJECTIVE: Our objective is to report comprehensive health outcomes of adults with MAS (> 18 years). DESIGN: Retrospective case note review of 16 adults with MAS managed by one clinician. Results expressed as median (range) RESULTS: The study included 16 adults (7 males) with MAS...
July 12, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28697490/the-influence-of-blood-pressure-on-fetal-aortic-distensibility-an-animal-validation-study
#16
Christoph Wohlmuth, Kenneth J Moise, Ramesha Papanna, Ciprian Gheorghe, Anthony Johnson, Yisel Morales, Helena M Gardiner
BACKGROUND/AIMS: Aortic distension waveforms describe the change in diameter or cross-sectional area over the cardiac cycle. We aimed to validate the association of aortic fractional area change (AFAC) with blood pressure (BP) in a fetal lamb model. METHODS: Four pregnant ewes underwent open fetal surgery under general anesthesia at 107-120 gestational days. A 4-Fr catheter was introduced into the fetal femoral artery and vein, or the carotid artery and jugular vein...
July 12, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28689675/hypothesis-of-improved-visualization-of-microstructures-in-the-interventricular-septum-with-ultrasound-and-adaptive-beamforming
#17
Ole Marius Hoel Rindal, Svend Aakhus, Sverre Holm, Andreas Austeng
In this work, in vivo ultrasound cardiac images created with Capon's minimum variance adaptive beamformer are compared with images acquired with the conventional delay-and-sum beamformer. Specifically, we provide three views of a human heart imaged through the parasternal short-axis, the parasternal long-axis and the apical four-chamber views. The minimum variance beamformer produced images with improved lateral resolution, resulting in better resolved speckle structure and improved edges, especially on close investigation of the interventricular septum...
July 6, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28686155/paediatric-venous-thromboembolism-a-report-from-the-italian-registry-of-thrombosis-in-children-riti
#18
Paola Giordano, Massimo Grassi, Paola Saracco, Angelo C Molinari, Chiara Gentilomo, Agnese Suppiej, Giuseppe Indolfi, Donatella Lasagni, Matteo Luciani, Fiammetta Piersigilli, Maria C Putti, Lidia L Rota, Stefano Sartori, Paolo Simioni
BACKGROUND: The Italian Registry of Thrombosis in Children (RITI) was established by a multidisciplinary team with the aims of improving knowledge about neonatal and paediatric thrombotic events in Italy and providing a preliminary source of data for the future development of specific clinical trials and diagnostic-therapeutic protocols. MATERIALS AND METHODS: We analysed the subset of RITI data concerning paediatric systemic venous thromboembolic events that occurred between January 2007 and June 2013...
June 30, 2017: Blood Transfusion, Trasfusione del Sangue
https://www.readbyqxmd.com/read/28685414/cervical-chondrocutaneous-branchial-remnants
#19
Daniel T Ginat, Daniel N Johnson, Andrea Shogan, Nicole A Cipriani
Cervical chondrocutaneous branchial remnants are rare congenital choristomas. These lesions contain a cartilage core surrounded by skin with adnexal structures and subcutaneous fat. Correspondingly, on ultrasound there is a tubular hypoechoic core surrounded by hyperechoic, while on CT there is central intermediate attenuation surrounded by fat attenuation tissues. These features are exemplified in this sine qua non radiology-pathology correlation article. Management includes complete surgical resection and evaluating for potential associated anomalies, such as other branchial apparatus anomalies, as well as cardiac anomalies...
July 6, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28683505/comparison-of-b-mode-with-b-flow-sonography-for-the%C3%A2-evaluation-of-femoral-arteries-in-infants
#20
Michael Groth, Elena Dammann, Florian Arndt, Marielle Ernst, Jochen Herrmann
Purpose To evaluate femoral arteries (FAs) in infants in the context of catheter angiography with B-mode (BMS) and B-flow sonography (BFS) and to compare both methods for vessel delineation and reliability of vessel diameter measurements. Methods 21 consecutive infants who underwent ultrasound for the evaluation of FAs before or after cardiac catheterization were retrospectively included in this study. The diameter of the FAs and the maximum length of the vessel section displayed on a single ultrasound plane were recorded by two radiologists for BMS and BFS...
July 6, 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
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