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Focused cardiac ultrasound

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https://www.readbyqxmd.com/read/28900519/point-of-care-ultrasound-in-cardiopulmonary-resuscitation-a-concise-review
#1
REVIEW
Pablo Blanco, Carmen Martínez Buendía
Point-of-care ultrasound (POCUS) is a widely used tool in critical care areas, allowing for the performance of accurate diagnoses and thus enhancing the decision-making process. Every major organ or system can be safely evaluated with POCUS. In that respect, the utility of POCUS in cardiac arrest is gaining interest. In this article, we will review the actual role of ultrasound in cardiac arrest and the main POCUS protocols focused to this scenario as well as discuss the potential role of POCUS in monitoring the efficacy of the chest compressions...
September 2017: Journal of Ultrasound
https://www.readbyqxmd.com/read/28887857/development-of-a-patient-specific-atrial-phantom-model-for-planning-and-training-of-inter-atrial-interventions
#2
Pedro Morais, João Manuel R S Tavares, Sandro Queirós, Fernando Veloso, Jan D'hooge, João L Vilaça
BACKGROUND: Several authors have presented cardiac phantoms to mimic the particularities of the heart, making it suitable for medical training and surgical planning. Although the initial models were mainly focused on the ventricles, personalized phantoms of the atria were recently presented. However, such models are typically rigid, the atrial wall is not realistic and they are not compatible with ultrasound, being sub-optimal for planning/training of several interventions. METHODS: In this work, we propose a strategy to construct a patient-specific atrial model...
September 8, 2017: Medical Physics
https://www.readbyqxmd.com/read/28874293/a-plea-for-an-early-ultrasound-clinical-integrated-approach-in-patients-with-acute-heart-failure-a-proactive-comment-on-the-esc-guidelines-on-heart-failure-2016
#3
G Tavazzi, A N Neskovic, A Hussain, G Volpicelli, G Via
BACKGROUND: The European Association of Cardiology (ESC) Guidelines on the diagnosis and treatment of acute heart failure (AHF) indicate prompt therapy initiation and performance of relevant investigations as paramount. Specifically, echocardiography prior to treatment is advocated only with hemodynamic instability, and the evaluation of clinical signs of peripheral perfusion and congestion is suggested as guidance for early interventions. Given the growing body of evidence on the diagnostic/monitoring capabilities of bedside ultrasound (including focused cardiac ultrasound, comprehensive echocardiography, lung ultrasound), we discuss the potential benefit of an integrated clinical/ultrasound approach at the very early stages of acute heart failure...
October 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28841555/a-vector-flow-imaging-method-for-portable-ultrasound-using-synthetic-aperture-sequential-beamforming
#4
Tommaso Di Ianni, Carlos Armando Villagomez Hoyos, Caroline Ewertsen, Thomas Kim Kjeldsen, Jesper Mosegaard, Michael Bachmann Nielsen, Jorgen Arendt Jensen
This paper presents a vector flow imaging (VFI) method for the integration of quantitative blood flow imaging in portable ultrasound systems. The method combines directional transverse oscillation (TO) and synthetic aperture sequential beamforming (SASB) to yield continuous velocity estimation in the whole imaging region. Six focused emissions are used to create a high-resolution image (HRI), and a dual-stage beamforming approach is used to lower the data throughput between the probe and the processing unit...
August 21, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28832901/focused-cardiac-ultrasound-is-feasible-in-parturients-a-prospective-observational-study
#5
D Jain, A M Grejs, R Bhavsar, U Bang, E Sloth, P Juhl-Olsen
BACKGROUND: In pregnancy, the major causes of morbidity and mortality include diseases that affect circulation profoundly and restoration of normal circulation is a key objective. Focused cardiac ultrasound provides information on the individual determinants of circulation and has a significant impact on patient management. This study aimed to determine the feasibility of focused cardiac ultrasound in term parturients. METHODS: Forty parturients underwent focused cardiac ultrasound...
October 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/28796606/directional-transverse-oscillation-vector-flow-estimation
#6
Jorgen Arendt Jensen
A method for estimating vector velocities using transverse oscillation (TO) combined with directional beamforming is presented. In directional TO (DTO), a normal focused field is emitted and the received signals are beamformed in the lateral direction transverse to the ultrasound beam to increase the amount of data for vector velocity estimation. The approach is self-calibrating as the lateral oscillation period is estimated from the directional signal through a Fourier transform to yield quantitative velocity results over a large range of depths...
August 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28666791/assessing-the-left-main-stem-in-the-cardiac-catheterization-laboratory-what-is-significant-function-imaging-or-both
#7
REVIEW
George Kassimis, Giovanni Luigi de Maria, Niket Patel, Raina Tushar, Peter Scott, Rajesh K Kharbanda, Adrian P Banning
Revascularization of significant Left Main Stem (LMS) disease improves clinical outcomes. This can be achieved through either Coronary Artery Bypass Grafting or Percutaneous coronary intervention. Defining a significant stenosis of the LMS can be challenging and debatable, as most data have been derived using angiographic assessment alone, with a threshold of 50% luminal stenosis used as a marker of functional significance. The use of adjunctive technologies like Intravascular Ultrasound and Fractional Flow Reserve has improved our ability to accurately assess the anatomical severity and physiological significance of coronary artery stenoses, much more so, than can be achieved through conventional angiography alone...
June 20, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28661107/-when-ultrasound-meets-the-internist
#8
REVIEW
David Katz, Ziv Dadon, Todd Zalut, Evan Avraham Alpert
Point-of-care ultrasound (POCUS) is an important modality with many advantages. At the Shaare Zedek Medical Centre, we developed a case-based course to teach POCUS to internal medicine residents and attendings. The topics include: "Introduction to Point-of-Care Ultrasound", "Focused Assessment with Sonography of Trauma", "Basic Cardiac, Pulmonary and Vascular Ultrasound", "Rapid Ultrasound in Shock" and "Ultrasound Guided Central Lines". The use of POCUS should aid in rapid diagnosis, decrease complications associated with bed-side procedures, and ultimately improve patient care...
June 2017: Harefuah
https://www.readbyqxmd.com/read/28651276/white-paper-interventional-mri-current-status-and-potential-for-development-considering-economic-perspectives-part-1-general-application
#9
REVIEW
Jörg Barkhausen, Thomas Kahn, Gabriele A Krombach, Christiane K Kuhl, Joachim Lotz, David Maintz, Jens Ricke, Stefan O Schönberg, Thomas J Vogl, Frank K Wacker
Background MRI is attractive for the guiding and monitoring of interventional procedures due to its high intrinsic soft tissue contrast and the possibility to measure physiologic parameters like flow and cardiac function. Method The current status of interventional MRI for the clinical routine was analyzed. Results The effort needed for the development of MR-safe monitoring systems and instruments initially resulted in the application of interventional MRI only for procedures that could not be performed by other means...
July 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28593003/focused-cardiac-ultrasound-focus-by-emergency-medicine-residents-in-patients-with-suspected-cardiovascular-diseases
#10
Davood Farsi, Skokoufeh Hajsadeghi, Mohammad Javad Hajighanbari, Mani Mofidi, Peyman Hafezimoghadam, Mahdi Rezai, Babak Mahshidfar, Samaneh Abiri, Saeed Abbasi
INTRODUCTION: Few studies have assessed the value and accuracy of focused cardiac ultrasound (FOCUS) performed by emergency physicians. The aim of the present study was to evaluate the diagnostic accuracy of FOCUS performed by emergency medicine residents compared to echocardiography performed by a cardiologist in emergency department (ED) patients suspected of cardiovascular disease. METHODS: The research involved a prospective observational cross-sectional study enrolling patients over 18-years old suspected of having cardiovascular disease who required an echocardiograph...
June 2017: Journal of Ultrasound
https://www.readbyqxmd.com/read/28584211/echocardiographic-evaluation-of-coronary-abnormalities-and-cardiac-function-in-a-murine-model-of-kawasaki-disease-using-high-frequency-ultrasound
#11
Xin-Xin Zhang, Zhong-Dong Du, Shang-Guan Wen, Xiu-Ping Sun
BACKGROUND: Murine model of coronary arterial inflammation has been widely accepted as an animal model of and used in Kawasaki disease (KD). This study sought to evaluate the developmental changes of coronary arteries and cardiac function in a murine model of KD with a high-frequency ultrasound system and to provide evidence for the preparation of the model of KD. METHODS: Lactobacillus casei cell wall extract was prepared and injected into C57BL/6 mice intraperitoneally (i...
June 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28558692/the-feasibility-and-efficacy-of-implementing-a-focused-cardiac-ultrasound-course-into-a-medical-school-curriculum
#12
Sergio L Kobal, Yotam Lior, Alon Ben-Sasson, Noah Liel-Cohen, Ori Galante, Lior Fuchs
BACKGROUND: Teaching cardiac ultrasound to medical students in a brief course is a challenge. We aimed to evaluate the feasibility of teaching large groups of medical students the acquisition and interpretation of cardiac ultrasound images using a pocket ultrasound device (PUD) in a short, specially designed course. METHODS: Thirty-one medical students in their first clinical year participated in the study. All were novices in the use of cardiac ultrasound. The training consisted of 4 hours of frontal lectures and 4 hours of hands-on training...
May 30, 2017: BMC Medical Education
https://www.readbyqxmd.com/read/28555810/reduced-right-ventricular-diameter-during-cardiac-arrest-caused-by-tension-pneumothorax-a-porcine-ultrasound-study
#13
P Caap, R Aagaard, E Sloth, B Løfgren, A Granfeldt
INTRODUCTION: Advanced life support (ALS) guidelines recommend ultrasound to identify reversible causes of cardiac arrest. Right ventricular (RV) dilatation during cardiac arrest is commonly interpreted as a sign of pulmonary embolism. The RV is thus a focus of clinical ultrasound examination. Importantly, in animal studies ventricular fibrillation and hypoxia results in RV dilatation. Tension pneumothorax (tPTX) is another reversible cause of cardiac arrest, however, the impact on RV diameter remains unknown...
August 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/28540661/diagnostic-accuracy-of-focused-cardiac-and-venous-ultrasound-examinations-in-patients-with-shock-and-suspected-pulmonary-embolism
#14
Peiman Nazerian, Giovanni Volpicelli, Chiara Gigli, Alessandro Lamorte, Stefano Grifoni, Simone Vanni
Evaluating the diagnostic performance of focused cardiac ultrasound (US) alone and combination with venous US in patients with shock and suspected pulmonary embolism (PE). Consecutive adult patients with shock and suspected PE, presenting to two Italian emergency departments, were included. Patients underwent cardiac and venous US at presentation with the aim of detecting right ventricular (RV) dilatation and proximal deep venous thrombosis (DVT). Final diagnosis of PE was based on a second level diagnostic test or autopsy...
May 24, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28537977/perioperative-use-of-focused-transthoracic-cardiac-ultrasound-a-survey-of-current-practice-and-opinion
#15
Frederick Conlin, Neil R Connelly, Michael P Eaton, Patrick J Broderick, Jennifer Friderici, Adam C Adler
BACKGROUND: The advent of portable ultrasound machines in recent years has led to greater availability of focused cardiac ultrasound (FoCUS) in the perioperative and critical care setting. To our knowledge, its use in the perioperative setting among anesthesiologists remains undefined. We sought to assess the use of FoCUS by members of the Society of Cardiovascular Anesthesiologists (SCA) in clinical practice, to identify variations in its application, to outline limits to its use, and to understand the level of training of physicians using this technology...
May 19, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28485200/assessment-of-early-treatment-response-by-rapid-cardiothoracic-ultrasound-in-acute-heart-failure-cardiac-filling-pressures-pulmonary-congestion-and-mortality
#16
Jonas Öhman, Veli-Pekka Harjola, Pasi Karjalainen, Johan Lassus
BACKGROUND: It is unclear how to optimally monitor acute heart failure (AHF) patients. We evaluated the timely interplay of cardiac filling pressures, brain natriuretic peptides (BNPs), lung ultrasound (LUS) and symptoms during AHF treatment. METHODS: We enrolled 60 patients who had been hospitalised for AHF. Patients were examined with a rapid cardiothoracic ultrasound (CaTUS) protocol, combining LUS and focused echocardiographic evaluation of cardiac filling pressures (i...
May 1, 2017: European Heart Journal. Acute Cardiovascular Care
https://www.readbyqxmd.com/read/28471148/clinical-imaging-in-patients-experiencing-chest-pain
#17
Angelo Silverio, Rodolfo Citro
Non-invasive imaging modalities integrate the clinical and laboratory diagnostic work-up of patients admitted in emergency department for chest pain. Transthoracic echocardiography is the first-line imaging tool because it is rapidly and widely available, bedside feasible and cost-effective. Even when a comprensive exam is not feasible, a fast focused ultrasound exam should be performed. Contrast enhanced computed tomography is an easily accessible tool with specific application in patients suspected for pulmonary embolism (PE) and acute coronary syndrome (ACS) according to the pre-test risk assessment and to the clinical status...
May 3, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/28457106/detection-rate-and-sonographic-signs-of-trisomy-21-fetuses-at-14-17-weeks-of-gestation
#18
Eliezer Bronshtein, Ido Solt, Moshe Bronshtein, Ayala Gover, Igal Wolman, Zeev Blumenfeld
BACKGROUND: Early prenatal ultrasound is an important part of prenatal screening in Israel. No studies have described the rate of trisomy 21 [T21] identification at 14-17 weeks gestation. OBJECTIVES: To describe the rate of T21 identification by transvaginal sonograms (TVS) at 14-17 weeks gestation. METHODS: We conducted a historical prospective study. Since 1986, early TVS of 72,000 fetuses at 14-17 weeks gestation have been prospectively recorded together with prenatal screening data at a private ultrasound center (AL-KOL, Haifa)...
January 2017: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28453186/emergency-physicians-are-able-to-detect-right-ventricular-dilation-with-good-agreement-compared-to-cardiology
#19
Matt A Rutz, Julie M Clary, Jeffrey A Kline, Frances M Russell
OBJECTIVE: Focused cardiac ultrasound (FOCUS) is a useful tool in evaluating patients presenting to the emergency department (ED) with acute dyspnea. Prior work has shown that right ventricular (RV) dilation is associated with repeat hospitalizations and shorter life expectancy. Traditionally, RV assessment has been evaluated by cardiologist-interpreted comprehensive echocardiography. The primary goal of this study was to determine the inter-rater reliability between emergency physicians (EPs) and a cardiologist for determining RV dilation on FOCUS performed on ED patients with acute dyspnea...
July 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28436918/an-integrated-and-highly-sensitive-ultrafast-acoustoelectric-imaging-system-for-biomedical-applications
#20
Beatrice Berthon, Pierre-Marc Dansette, Mickael Tanter, Mathieu Pernot, Jean Provost
PURPOSE: Direct imaging of cardiac electrical activation is crucial to better understand and diagnose diseases linked to arrhythmias. This work presents an Ultrafast Acoustoelectric Imaging (UAI) system for direct and non-invasive ultrafast mapping of propagating current densities. MATERIALS AND METHODS: Acoustoelectric imaging is based on the acoustoelectric effect, the modulation of the medium's electrical impedance by a propagating ultrasonic wave. UAI triggers this effect with plane wave emissions to image current densities...
April 24, 2017: Physics in Medicine and Biology
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