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https://www.readbyqxmd.com/read/28322421/ultrasound-screening-for-abdominal-aortic-aneurysms
#1
Stephan Engelberger, Raffaele Rosso, Manuela Sarti, Filippo Del Grande, Reto Canevascini, Jos C van den Berg, Giorgio Prouse, Luca Giovannacci
QUESTIONS UNDER STUDY: This pilot study aimed to assess the feasibility, acceptance and costs of an ultrasound scan screening programme for abdominal aortic aneurysms (AAA) in the elderly male population resident in Canton Ticino, Switzerland. METHODS: The target population were male patients aged 65-80 years who attended the outpatient clinics of the Lugano Regional Hospital in 2013. The patients showing interest were contacted by phone to verify their eligibility and fix the appointment for the ultrasound scan of the abdominal aorta...
March 21, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/28287528/ultrasound-based-pulse-wave-velocity-evaluation-in-mice
#2
Nicole Di Lascio, Claudia Kusmic, Francesco Stea, Francesco Faita
Arterial stiffness can be evaluated by calculating pulse wave velocity (PWV), i.e., the speed with which the pulse wave travels in a conduit vessel. This parameter is being increasingly investigated in small rodent models in which it is used for assessing alterations in vascular function related to particular genotypes/treatments or for characterizing cardiovascular disease progression. This protocol describes an image processing algorithm which leads to non-invasive arterial PWV measurement in mice using ultrasound (US) images only...
February 14, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28285473/a-modern-case-series-of-resuscitative-endovascular-balloon-occlusion-of-the-aorta-reboa-in-an-out-of-hospital-combat-casualty-care-setting
#3
Justin D Manley, Benjamin J Mitchell, Joseph J DuBose, Todd E Rasmussen
BACKGROUND: Resuscitative endovascular balloon occlusion of the aorta (REBOA) is used to mitigate bleeding and sustain central aortic pressure in the setting of shock. The ER-REBOA™ catheter is a new REBOA technology, previously reported only in the setting of civilian trauma and injury care. The use of REBOA in an out-of-hospital setting has not been reported, to our knowledge. METHODS: We present a case series of wartime injured patients cared for by a US Air Force Special Operations Surgical Team at an austere location fewer than 3km (5-10 minutes' transport) from point of injury and 2 hours from the next highest environment of care-a Role 2 equivalent...
2017: Journal of Special Operations Medicine: a Peer Reviewed Journal for SOF Medical Professionals
https://www.readbyqxmd.com/read/28280627/minimally-invasive-ivor-lewis-esophagectomy-for-esophageal-cancer-with-right-aortic-arch
#4
Jeremy Linson, Michael Latzko, Bestoun Ahmed, Ziad Awad
Right aortic arch (RAA) is a rare congenital vascular abnormality in which the aorta descends in the right thorax and encircles the esophagus. Historically, esophagectomy for patients for RAA is done through a left thoracotomy as exposure and mobilization of the esophagus is difficult through a right thoracotomy. A 73-year-old male was found to have an esophageal adenocarcinoma. Endoscopic ultrasound showed a T3N0 lesion in the lower third of the esophagus. PET CT demonstrated a circumferential lesion without evidence of distant disease or involved lymph nodes and a RAA which was not associated with congenital heart disease or symptoms...
February 2017: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28271001/fully-integrated-optical-coherence-tomography-ultrasound-and-indocyanine-green-based-fluorescence-tri-modality-system-for-intravascular-imaging
#5
Yan Li, Joseph Jing, Yueqiao Qu, Yusi Miao, Buyun Zhang, Teng Ma, Mingyue Yu, Qifa Zhou, Zhongping Chen
We present a tri-modality imaging system and fully integrated tri-modality probe for intravascular imaging. The tri-modality imaging system is able to simultaneously acquire optical coherence tomography (OCT), ultrasound (US), and fluorescence imaging. Moreover, for fluorescence imaging, we used the FDA-approved indocyanine green (ICG) dye as the contrast agent to target lipid-loaded macrophages. We conducted imaging from a male New Zealand white rabbit to evaluate the performance of the tri-modality system...
February 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28265729/quality-control-of-the-foot-revascularization-using-indocyanine-green-fluorescence-imaging
#6
Nicla Settembre, Petteri Kauhanen, Anders Albäck, Kristyna Spillerova, Maarit Venermo
OBJECTIVES: Critical limb ischemia (CLI) is a clinical diagnosis, confirmed by objective tests, usually ankle-brachial index (ABI), toe pressure (TP) and TcPO2. Furthermore, the anatomical lesions in patients affected by CLI were visualized by ultrasound, angiography, CTA, or MRA. Indocyanine green fluorescence imaging (ICG-FI) is a diagnostic modality for assessing foot perfusion. We aimed to study the usefulness of ICG-FI in the quality control of revascularization. MATERIALS AND METHODS: One hundred and four CLI limbs in 101 patients were studied with ICG-FI using SPY Elite before and after open or endovascular revascularization...
March 6, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28260559/umbilical-artery-histomorphometry-a-link-between-the-intrauterine-environment-and-kidney-development
#7
M J DeFreitas, D Mathur, W Seeherunvong, T Cano, C P Katsoufis, S Duara, S Yasin, G Zilleruelo, M M Rodriguez, C L Abitbol
Prematurity is a risk factor for hypertension, vascular stiffness, nephron deficit and adult onset cardiorenal disease. The vascular tree and kidneys share morphogenic drivers that promote maturation in utero before 36 weeks of gestation. Vascular elastin accrual terminates after birth leaving collagen to promote vascular stiffness. Our objective was to determine if the histomorphometry of the umbilical artery, an extension of the aorta, parallels nephron mass across gestational age groups. From a cohort of 54 newborns, 32 umbilical cord specimens were adequate for evaluation...
March 6, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28244145/feasibility-and-diagnostic-accuracy-of-point-of-care-abdominal-sonography-by-pocket-sized-imaging-devices-performed-by-medical-residents
#8
Ingunn E Kjesbu, Christian B Laursen, Torbjørn Graven, Hans Martin Holden, Bjørnar Rømo, Garrett Newton Andersen, Ole Christian Mjølstad, Annmarie Lassen, Håvard Dalen
OBJECTIVES: We aimed to study the feasibility and diagnostic performance of bedside ultrasound by examination of the liver, gallbladder, kidneys, and abdominal aorta performed by medical residents with limited experience in ultrasound, on emergency admissions using pocket-sized imaging devices (PSIDs). METHODS: A total of 199 patients admitted acutely to the medical department at the non-university Levanger Hospital, Norway, during the period from April 4 to June 23, 2011, were consecutively included...
February 28, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28237648/risk-factors-for-abdominal-aortic-aneurysm-in-the-korean-population
#9
Sang-Ah Han, Jin Hyun Joh, Ho-Chul Park
BACKGROUND: Ultrasound screening shows a clinical benefit in reducing abdominal aortic aneurysm (AAA)-related mortality. However, its cost-effectiveness remains unclear. Understanding the relationship between risk factors and AAA is important to maximize the benefit of AAA screening. However, risk factors for AAA have not been reported in Korea. The purpose of this study was to determine the prevalence of and risk factors for AAA among the Korean population. METHODS: The study population consisted of patients >50 years of age who consented for AAA screening...
February 22, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28220936/type-3-takayasu-arteritis-diagnosed-by-parvus-tardus-renal-doppler-signal-modulation
#10
Ural Koc
Takayasu's arteritis is known to cover the youngest age group in the etiology of secondary hypertension. The type 3 pattern is rare and involves the thoraco-abdominal aorta and its main abdominal branches. Here, we present the imaging results of a patient who had been followed up for systemic arterial hypertension and was diagnosed with Takayasu's arteritis type 3 by CT and MR angiography following bilateral detection of a parvus-tardus Doppler signal modulation in the renal arteries. We discuss the differential diagnoses that should be considered when observing a tardus-parvus Doppler signal...
February 21, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28215930/ultrasound-guided-resuscitative-endovascular-balloon-occlusion-of-the-aorta-in-the-resuscitation-area
#11
Takayuki Ogura, Alan Kawarai Lefor, Mitsunobu Nakamura, Kenji Fujizuka, Kousuke Shiroto, Minoru Nakano
BACKGROUND: In trauma resuscitation with resuscitative endovascular balloon occlusion of the aorta (REBOA), urgent and accurate placement of the catheter in the resuscitation area without fluoroscopy can shorten the time from admission to REBOA, allowing rapid, temporary control of bleeding. DISCUSSION: The experience-based protocol in our center for ultrasound-guided REBOA in the resuscitation area without fluoroscopy is as follows: the femoral artery is punctured and a guidewire inserted; sonography is used to verify that the guidewire is in the abdominal aorta; the position of the balloon is confirmed with ultrasound after estimating the distance to the clavicle, and the pressure in the radial artery and sheath is used to monitor correct positioning; connect the pressure transducer to the catheter sheath for continuous monitoring of the blood pressure in the sheath, and inflate the balloon until the blood pressure tracing at the sheath has disappeared; check the pulse in the left radial artery, and withdraw the catheter slightly if the pulse in the radial artery is not palpable or is decreased (if this pulse is not palpable or decreased, the balloon is in the aortic arch)...
February 17, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28207510/endovascular-repair-of-bilateral-common-iliac-artery-aneurysms-using-gore-excluder-iliac-branch-endoprosthesis-without-aortobi-iliac-stent-graft-conjunction-a-case-report
#12
Vincenzo Ardita, Alessia Giaquinta, Massimiliano Veroux, Angelo Sanfiorenzo, Carla Virgilio, Giuseppe D'Arrigo, Pierfrancesco Veroux
INTRODUCTION: Bilateral common iliac artery (CIA) aneurysm (CIAA) is a rare entity. In the past decade, different endovascular approaches have been adopted for patients with several comorbidities or unfit for open repair (OR). Recently, the use of iliac branch stent graft has been proposed, resulting in satisfactory patency rates and decrease in morbidity. Currently, according to instruction for use, the iliac branch stent graft is to be used with aortobi-iliac stent graft conjunction...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28193267/abdominal-ultrasound-scanning-versus-non-contrast-computed-tomography-as-screening-method-for-abdominal-aortic-aneurysm-a-validation-study-from-the-randomized-dancavas-study
#13
Mads Liisberg, Axel C Diederichsen, Jes S Lindholt
BACKGROUND: Validating non-contrast-enhanced computed tomography (nCT) compared to ultrasound sonography (US) as screening method for abdominal aortic aneurysm (AAA) screening. METHODS: Consecutively attending men (n = 566) from the pilot study of the randomized Danish CardioVascular Screening trial (DANCAVAS trial), underwent nCT and US examination. Diameters were measured in outer-to-outer fashion. Sensitivity and specificity were done testing each modality against each other as reference standard...
February 14, 2017: BMC Medical Imaging
https://www.readbyqxmd.com/read/28183702/glycated-hemoglobin-is-associated-with-the-growth-rate-of-abdominal-aortic-aneurysms-a-substudy-from-the-viva-viborg-vascular-randomized-screening-trial
#14
Katrine Lawaetz Kristensen, Marie Dahl, Lars Melholt Rasmussen, Jes Sanddal Lindholt
OBJECTIVE: An inverse association between abdominal aortic aneurysms (AAAs) and diabetes mellitus exists; however, the cause remains unknown. This study aimed to evaluate whether the degree of glycemia is associated with aneurysm growth. APPROACH AND RESULTS: The study was based on VIVA trial (Viborg Vascular), the randomized clinically controlled screening trial for abdominal aortic aneurysm in men aged 65 to 74 years in the Central Denmark Region. The screening included measurement of the abdominal aorta by ultrasound, analysis of glycated hemoglobin (HbA1c), and follow-up for ≤5 years for aneurysms <5 cm...
February 9, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28168822/circumferential-strain-by-velocity-vector-imaging-and-speckle-tracking-echocardiography-validation-against-sonomicrometry-in-an-aortic-phantom
#15
Johan Petrini, Maria J Eriksson, Kenneth Caidahl, Matilda Larsson
BACKGROUND: Evaluation of arterial deformation and mechanics using strain analysis on ultrasound greyscale images has gained increasing scientific interest. The aim of this study was to validate in vitro measurements of circumferential strain by velocity vector imaging (VVI) and speckle-tracking echocardiography (STE) against sonomicrometry as a reference method. METHOD: Two polyvinyl alcohol phantoms sized to mimic the descending aorta were constructed and connected to a pulsatile flow pump to obtain high-resistance flow profiles...
February 6, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28163172/endovascular-management-of-para-prosthetic-aortocaval-fistula-case-report-and-systematic-review-of-the-literature
#16
Claudio Bianchini Massoni, Giulia Rossi, Tiziano Tecchio, Paolo Perini, Antonio Freyrie
The aim of this article is to report a case of asymptomatic para-anastomotic aortocaval fistula (ACF) treated by endovascular aortic repair, and to review data of the literature on arteriovenous fistulae secondary to abdominal aortic surgery. A 78-year-old male complained of worsening pain in the right lower limb since 2 months. He presented a history of right femoropopliteal bypass for peripheral arterial occlusive disease and elective surgical treatment for a non-ruptured infrarenal aortic aneurysm (Dacron tube graft)...
February 3, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28161919/cysts-of-the-iris-pigment-epithelium-what-is-new-and-interesting-the-2016-jose-rizal-international-medal-lecture
#17
REVIEW
Jerry A Shields, Carol L Shields
PURPOSE: Cysts of the iris pigment epithelium (IPE) can involve the pupillary margin, midzone, or peripheral location or can be free-floating in the aqueous or vitreous or lodged in the anterior chamber angle. Avariant of IPE cyst, known as iris flocculi, can be a marker for systemic thoracic aneurysm. DESIGN: Review of IPE cysts and description of new observations of the lesions. METHODS: Review of IPE cysts. RESULTS: Lesions in 672 eyes were classified as of the pupillary margin (n = 49; 7%), midzone (n = 188; 28%), peripheral (n = 424; 63%), or dislodged/free-floating (n = 11; 2%)...
January 2017: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/28159520/feasibility-of-using-endobronchial-ultrasound-for-a-complete-examination-of-the-thoracic-aorta-a-case-report-of-acute-traumatic-aortic-injury
#18
Johannes W Steyn, Annette Rebel, Jeremiah Martin, Angela Mahan, Zaki-Udin Hassan
No abstract text is available yet for this article.
November 22, 2016: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28159435/initial-experience-using-a-telerobotic-ultrasound-system-for-adult-abdominal-sonography
#19
Scott J Adams, Brent E Burbridge, Andreea Badea, Leanne Langford, Vincent Vergara, Rhonda Bryce, Luis Bustamante, Ivar M Mendez, Paul S Babyn
PURPOSE: The study sought to assess the feasibility of performing adult abdominal examinations using a telerobotic ultrasound system in which radiologists or sonographers can control fine movements of a transducer and all ultrasound settings from a remote location. METHODS: Eighteen patients prospectively underwent a conventional sonography examination (using EPIQ 5 [Philips] or LOGIQ E9 [GE Healthcare]) followed by a telerobotic sonography examination (using the MELODY System [AdEchoTech] and SonixTablet [BK Ultrasound]) according to a standardized abdominal imaging protocol...
January 31, 2017: Canadian Association of Radiologists Journal, Journal L'Association Canadienne des Radiologistes
https://www.readbyqxmd.com/read/28149925/automated-detection-of-coarctation-of-aorta-in-neonates-from-two-dimensional-echocardiograms
#20
Franklin Pereira, Alejandra Bueno, Andrea Rodriguez, Douglas Perrin, Gerald Marx, Michael Cardinale, Ivan Salgo, Pedro Del Nido
Coarctation of aorta (CoA) is a critical congenital heart defect (CCHD) that requires accurate and immediate diagnosis and treatment. Current newborn screening methods to detect CoA lack both in sensitivity and specificity, and when suspected in a newborn, it must be confirmed using specialized imaging and expert diagnosis, both of which are usually unavailable at tertiary birthing centers. We explore the feasibility of applying machine learning methods to reliably determine the presence of this difficult-to-diagnose cardiac abnormality from ultrasound image data...
January 2017: Journal of Medical Imaging
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