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transthoracic ultrasound

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https://www.readbyqxmd.com/read/28898454/reverberation-and-multiple-shadow-artifacts-recorded-from-patients-with-intra-pericardial-centrifugal-continuous-flow-left-ventricular-assist-devices
#1
Tolga Sinan Güvenç, Yalçın Velibey, Özge Güzelburç, Göksel Çinier, Rengin Çetin Güvenç, Özlem Yıldırımtürk
Artifacts are by-products of ultrasound imaging that may cause confusion or misdiagnosis if not interpreted correctly. There are, however, several disorders where a specific pattern of artifacts can aid in diagnosis, especially when the object in question cannot be visualized directly. In this manuscript, we report two patients with reverberation and shadow artifacts originating from the housing and the propeller of a continuous-flow intra-pericardial left ventricular assist device. Visualization of the artifacts required modified transthoracic views, so these artifacts should not pose a diagnostic challenge during a routine echocardiographic evaluation...
September 12, 2017: Echocardiography
https://www.readbyqxmd.com/read/28879657/an-exploratory-investigation-of-echocardiographic-parameters-and-the-effects-of-posture-on-cardiac-structure-and-function-in-the-livingstone-s-fruit-bat-pteropus-livingstonii
#2
Aimee L Drane, Robert Shave, Andrew Routh, Alberto Barbon
There is growing evidence that dilated cardiomyopathy may be a major cause of death in captive Livingstone's fruit bats (Pteropus livingstonii). Therefore, the primary aim of this prospective, exploratory study was to examine whether a systematic cardiac ultrasound protocol is feasible in this critically endangered species and to report basic measures of cardiac structure and function from a cohort of apparently healthy bats. A secondary aim was to test the effect posture (dorsal recumbency vs. roosting) has upon cardiac function in this species...
September 6, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28877098/a-3-dimensional-printed-ultrasound-probe-visuospatial-trainer
#3
Ryan T McKenna, Jesse C Dove, Robert A Ratzlaff, Jose L Diaz-Gomez, Daniel J Cox, Leslie V Simon
Training adult learners to use ultrasound in clinical practice relies on the ability of the learner to apply visuospatial concepts to the anatomy of the human body. We describe a visuospatial trainer that replicates the housing of an ultrasound transducer, through which a linear laser projects light in the same plane and orientation as the ultrasonic sound waves. We use this trainer in combination with a porcine heart dissection laboratory to teach bedside cardiac ultrasound and transthoracic echocardiography (TTE)...
September 4, 2017: Ultrasound Quarterly
https://www.readbyqxmd.com/read/28868072/usefulness-of-coronary-flow-reserve-measured-by-transthoracic-coronary-doppler-ultrasound-in-the-elderly
#4
Danijela Trifunovic, Edina Cenko, Concetta Torromeo, Beatrice Ricci, Michele Schiariti, Marija Zdravkovic, Zorana Vasiljevic, Olivia Manfrini
No abstract text is available yet for this article.
July 2017: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/28864319/evaluation-of-imaging-strategy-to-optimize-and-improve-outcome-of-transcatheter-aortic-valvular-implantation
#5
Charlotte Casset, Adrien Jankowski, Bernard Bertrand, Carole Saunier, Nicolas Piliero, Mathieu Rodiere, Gilbert Ferretti, Jean-Louis Quesada, Alexis Broisat, Laurent Riou, Daniel Fagret, Catherine Ghezzi, Gérald Vanzetto, Gilles Barone-Rochette
Cardiac computed tomography (CT) provides additional information with ultrasound in the transcatheter heart valve (THV) size selection. However, the influence of these incremental data on outcomes has not been evaluated in a randomized study. A single-center prospective, randomized, and open study was performed. Patients referred for transfemoral transcatheter aortic valve implantation with a balloon-expandable endoprothesis were included. THV size selection was performed using either transthoracic and transesophageal echocardiography data (control group) or ultrasound and CT results (CT group)...
July 31, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28845003/-diagnosis-of-right-ventricular-outflow-tract-and-intraoperative-lesion-in-patients-with-right-coronary-artery-sinus-rupture-by-transthoracic-echocardiography
#6
Xiongfei Liang, Yifeng Yang, Wei Lin
To investigate the role of thoracic echocardiography in diagnosis and differential diagnosis of the right ventricular outflow tract into the right aorta with right ventricular aneurysm rupture. 
 Methods: A total of 19 patients with sinus rupture caused by ventricular septal defect in the right ventricular outflow road were reviewed. These patients were diagnosed as aortic right coronary sinus by preoperative transthoracic echocardiography from February 2010 to September 2016 in Xiangya Second Hospital and Xiangya Medical College Affiliated Haikou Hospital...
July 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28840019/bronchoscopy-with-endobronchial-ultrasound-guided-transbronchial-needle-aspiration-vs-transthoracic-needle-aspiration-in-lung-cancer-diagnosis-and-staging
#7
Mark L Munoz, Noah Lechtzin, Qing Kay Li, KoPen Wang, Lonny B Yarmus, Hans J Lee, David J Feller-Kopman
BACKGROUND: In evaluating patients with suspected lung cancer, it is important to not only obtain a tissue diagnosis, but also to obtain enough tissue for both histologic and molecular analysis in order to appropriately stage the patient with a safe and efficient strategy. The diagnostic approach may often be dependent on local resources and practice patterns rather than current guidelines. We Describe lung cancer staging at two large academic medical centers to identify the impact different procedural approaches have on patient outcomes...
July 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28834894/value-of-radial-probe-endobronchial-ultrasound-guided-transbronchial-biopsy-and-computer-tomography-guided-transthoracic-needle-aspiration-in-the-diagnosis-of-peripheral-pulmonary-lesions
#8
Qiudi Zhang, Sujuan Zhang, Xiong Xu, Qianqian Xu, Jun Zhou
Computer tomography-guided transthoracic needle aspiration (CT-TTNA) is a minimally invasive technique for sampling peripheral lung lesions. Radial endobronchial ultrasound-guided transbronchial biopsy (rEBUS-TBB) is an alternative. The present study analyzed and compared rEBUS-TBB and CT-TTNA in the diagnosis of peripheral pulmonary lesions (PPL).Clinical data of 513 patients with PPL who underwent an rEBUS-TBB or CT-TTNA examination were analyzed retrospectively. The positive diagnostic rate, complication rate, and influencing factors of the 2 methods were compared...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28834223/liver-and-systemic-hemodynamics-in-cirrhotic-children-impact-on-the-surgical-management-in-pediatric-living-donor-liver-transplantation
#9
Catherine de Magnée, Francis Veyckemans, Thierry Pirotte, Renaud Menten, Dana Dumitriu, Philippe Clapuyt, Karlien Carbonez, Catherine Barrea, Thierry Sluysmans, Christine Sempoux, Isabelle Leclercq, Francis Zech, Xavier Stephenne, Raymond Reding
BACKGROUND AND AIMS: Cirrhosis in adults is associated with modifications of systemic and liver hemodynamics, whereas little is known about the pediatric population. The aim of this work was to investigate whether alterations of hepatic and systemic hemodynamics were correlated with cirrhosis severity in children. The impact of hemodynamic findings on surgical management in pediatric living donor liver transplantation was evaluated. METHODS: Liver and systemic hemodynamics were studied prospectively in 52 children (median age= 1 year; 33 biliary atresia)...
August 17, 2017: Liver Transplantation
https://www.readbyqxmd.com/read/28810550/2d-sti-combined-with-gated-99-tc-m-mibi-mpi-for-the-diagnosis-of-myocardial-ischemia-in-hypercholesterolemia-patients
#10
Yi Song, Rui-Fang Zhang, Yu Liu
This study aimed to investigate the reliability of ultrasound two-dimensional speckle tracking imaging (2D-STI) for the evaluation of myocardial ischemia in familial hypercholesterolemia (FH) patients. We recruited 28 patients clinically diagnosed with homozygous familial hypercholesterolemia (HoFH) and subjected them to 2D-STI, gated transthoracic Doppler echocardiography (TTDE), and (99)Tc(m)-methoxyisobutylisonitrile myocardial perfusion imaging ((99)Tc(m)-MIBI MPI). The sensitivity, specificity and diagnostic accordance rate of TTDE and 2D-STI for myocardial ischemia in HoFH patients were compared with the (99)Tc(m)-MIBI scores...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28808496/role-of-pleural-transthoracic-ultrasound-guidance
#11
Maria Giulia Tinti, Elisabettamaria Frongillo, Marco Sperandeo
No abstract text is available yet for this article.
July 2017: Annals of Thoracic Medicine
https://www.readbyqxmd.com/read/28777479/an-interposed-pad-in-open-chest-echocardiographic-porcine-scans-for-mimicking-ultrasound-signal-attenuation-in-a-human-chest
#12
Randall R Kinnick, Minako Katayama, Marek Belohlavek
Opening a chest in an experimental echocardiographic animal study eliminates ultrasound signal attenuation by the chest wall. We developed a scanning technique that involves the use of an attenuative pad created from a mixture of urethane and titanium dioxide. The pad was interposed within transmission gel between the transducer face and cardiac surface in open-chest scans in a porcine model. Comparative measurements of left ventricular echogenicity without and with the pad demonstrate that the pad reproducibly causes ultrasound signal attenuation that closely mimics chest attenuation in clinical transthoracic echocardiographic studies...
August 4, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28765490/incidental-finding-of-persistent-left-superior-vena-cava-after-bubble-study-verification-of-central-venous-catheter
#13
Miguel Agustin Pardinas Gutierrez, Luis A Escobar, Vanessa Blumer, Jorge Luis Cabrera
We report a case of a patient with septic shock who underwent central venous catheter placement in the left internal jugular vein, and a bedside ultrasound 'bubble study' revealed venous cannulation. A chest X-ray postprocedure revealed concern for arterial system catheterisation. However, the possibility of a persistent left superior vena cava was discussed and confirmed with a formal transthoracic echocardiogram and CT. This case demonstrates the importance of ultrasound-guided visualisation of anatomical structures in real time during central venous catheterisation...
July 31, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28752731/cardiac-imaging-in-patients-with-dyspnea
#14
Pierfranco Dellavesa, Federico Nardi
Acute dyspnea is a frequent cause of access to the Discharge Department (DEA); Differentiation between cardiogenic and respiratory causes does not always seem simple and certain, causing a delay in initiating targeted therapies and prolonging the Patient's stay in the emergency department. The basic elements for the diagnosis remain the history and the objective examination, supplemented by the execution of an electrocardiogram, a determination of blood parameters and the execution of a chest X-ray. The limits of radiological semeiotics, related to a low sensitivity to high specificity, promote other methods available to the physician of First Aid...
July 27, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/28752137/echocardiographic-epicardial-fat-thickness-measurement-a-new-screening-test-for-subclinic-atherosclerosis-in-patients-with-inflammatory-bowel-diseases
#15
Kamil Ozdil, Zuhal Caliskan, Nursen Keles, Oguzhan Ozturk, Ahmet Selami Tekin, Resul Kahraman, Levent Doganay, Kenan Demircioglu, Yusuf Yilmaz, Mustafa Caliskan
OBJECTIVE: Inflammatory bowel diseases (IBD) consist of a number of chronic inflammatory diseases. Inflammatory process is known to be involved in all stages of atherosclerosis. Early atherosclerosis is reflected by increased levels of carotid artery intima media thickness (c-IMT) and high-sensitivity C-reactive protein (hs-CRP). Epicardial fat thickness (EFT) strongly influences both the formation and progression of atherosclerosis. Recent studies have demonstrated a relationship between c-IMT and hs-CRP levels and the risk of atherosclerosis in patients with IBD...
2017: Northern Clinics of Istanbul
https://www.readbyqxmd.com/read/28742031/patient-specific-left-ventricular-flow-simulations-from-transthoracic-echocardiography-robustness-evaluation-and-validation-against-ultrasound-doppler-and-magnetic-resonance-imaging
#16
David Larsson, Jeannette H Spuhler, Sven Petersson, Tim Nordenfur, Massimiliano Colarieti-Tosti, Johan Hoffman, Reidar Winter, Matilda Larsson
The combination of medical imaging with computational fluid dynamics (CFD) has enabled the study of 3D blood flow on a patient-specific level. However, with models based on gated high-resolution data, the study of transient flows, and any model implementation into routine cardiac care, is challenging. The present paper presents a novel pathway for patient-specific CFD modelling of the left ventricle (LV), using 4D transthoracic echocardiography (TTE) as input modality. To evaluate the clinical usability, two sub-studies were performed...
July 21, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28740394/a-case-of-iatrogenic-pneumothorax-in-which-chest-tube-placement-could-be-avoided-by-intraoperative-evaluation-with-transthoracic-ultrasonography
#17
Izumi Sato, Hirotsugu Kanda, Megumi Kanao-Kanda, Atsushi Kurosawa, Takayuki Kunisawa
We report a case of iatrogenic pneumothorax in which chest tube placement was avoided by continuous intraoperative evaluation with transthoracic ultrasonography. A 53-year-old man had undergone a subsegmentectomy. While attempting to place a central venous catheter in the right internal jugular vein after the induction of anesthesia, we identified gas absorption during the puncture and suspected a pneumothorax. Chest X-ray revealed an ~5-mm collapse of the right lung apex. Tension pneumothorax was a concern during surgery because of the long-term positive pressure ventilation, but we decided to start the operation without preventative chest tube placement...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28725332/thyrotoxic-valvulopathy-case-report-and-review-of-the-literature
#18
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/28656711/left-atrial-compression-with-acute-heart-failure-caused-by-esophageal-bolus
#19
Stefano Maffè, Anna Maria Paino, Paola Paffoni, Luca Bergamasco, Pierfranco Dellavesa, Franco Zenone, Lorenzo Cucchi, Lara Baduena, Nicolò Franchetti Pardo, Umberto Parravicini
We report a case of left atrial extrinsic compression caused by an esophageal food bolus in a patient presenting with acute heart failure. Transthoracic echocardiography along with contrast-enhanced CT showed evidence of esophageal dilation producing left atrial compression. Esophageal endoscopy and fragmentation of the bolus, allowing the accumulated food to descend into the stomach, produced a rapid improvement of hemodynamic and clinical status. © 2017 Wiley Periodicals, Inc. J Clin Ultrasound, 2017.
June 27, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28625308/the-role-of-ultrasonography-in-obstetric-anesthesia
#20
REVIEW
Allison Lee, John P R Loughrey
Ultrasonography is increasingly being viewed as an everyday tool in obstetric anesthesia. For the administration of spinal or epidural anesthesia, it reduces needle redirection attempts in patients with difficult anatomy. In the less frequent scenario of a collapsed patient, it helps with assessment in the form of transthoracic echocardiography. Abdominal blocks require ultrasound guidance for safe and anatomically correct placement. Accurate assessment of gastric volume status with ultrasound would be a useful everyday skill if it is adopted into mainstream practice...
March 2017: Best Practice & Research. Clinical Anaesthesiology
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