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Ultrasound radial

Xuan-Binh D Pham, Jerry J Kim, Aaron B Parrish, Cynthia Tom, Ezinne J Ihenachor, David Mina, Christian de Virgilio
Prior studies have shown racial and gender differences with respect to maturation of arteriovenous fistulas. Women and minorities have lower maturation rates for unclear reasons. Small arterial diameter and high brachial artery bifurcation (HBB) are also implicated in reduced maturation rates. We sought to correlate differences in upper extremity arterial anatomy to race and gender. All upper extremity vascular mapping ultrasounds from 2013 to 2014 were retrospectively reviewed. A total of 509 arms in 284 patients were evaluated...
October 2016: American Surgeon
Effat Soleimani, Manijhe Mokhtari-Dizaji, Nasser Fatouraee, Hazhir Saberi
Purpose: The aim of this study was to introduce and implement a noninvasive method to derive the carotid artery pressure waveform directly by processing diagnostic sonograms of the carotid artery. Methods: Ultrasound image sequences of 20 healthy male subjects (age, 36±9 years) were recorded during three cardiac cycles. The internal diameter and blood velocity waveforms were extracted from consecutive sonograms over the cardiac cycles by using custom analysis programs written in MATLAB...
September 20, 2016: Ultrasonography
Sameer Sethi, Souvik Maitra, Vikas Saini, Tanvir Samra, S K Malhotra
BACKGROUND: The current available literature is not unanimous in reporting the utility of short-axis and long-axis techniques for radial artery cannulation in both adults and children. This study was designed to compare short-axis out-of-plane (SA-OOP) and long-axis in-plane (LA-IP) techniques in ultrasound-guided radial artery cannulation in adults. METHODS: In this prospective randomized controlled trial, 150 adult patients of American Society of Anesthesiologists physical status I-III aged between 18 and 70 years were included...
October 19, 2016: Journal of Anesthesia
Alon Abraham, Aaron Izenberg, Dubravka Dodig, Vera Bril, Ari Breiner
INTRODUCTION: Neuralgic amyotrophy (NA) is characterized by acute or subacute onset of shoulder and arm pain, followed by muscle atrophy and weakness, and variable sensory abnormalities. Historically, the site of inflammation has been localized to the brachial plexus, although involvement of individual nerve branches has been well recognized. METHODS: We describe ultrasound (US) findings in 2 cases with clinical presentation suggestive for NA, involving individual peripheral nerves, correlating with clinical and electrophysiological findings...
June 13, 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
Alon Abraham, Aaron Izenberg, Dubravka Dodig, Vera Bril, Ari Breiner
PURPOSE: Neuralgic amyotrophy is characterized by acute or subacute onset of shoulder and arm pain, followed by muscle atrophy and weakness, and variable sensory abnormalities. Historically, the site of inflammation has been localized to the brachial plexus, although the involvement of individual nerve branches has been well recognized. METHODS: We describe ultrasound findings in two cases with a clinical presentation suggestive of neuralgic amyotrophy, involving individual peripheral nerves, correlating with clinical and electrophysiological findings...
October 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
Daniel P Herbst
The process of microbubble filtration from blood is complex and highly dependent on the forces of flow and buoyancy. To protect the patient from air emboli, arterial-line filters commonly use a micropore screen, a large volume housing with purpose-built shape, and a purge port to trap, separate, and remove circulating microbubbles. Although it has been proposed that an insufficient buoyancy force renders the purge port ineffective at removing microbubbles smaller than 500 μm, this research attempts to investigate the purge flow of an arterial-line filter to better understand the microbubble removal function in a typical radial filter design...
September 2016: Journal of Extra-corporeal Technology
Ji Hyun Yoon, In-Jeong Cho, Hyuk-Jae Chang, Ji Min Sung, Jinyong Lee, Hojin Ryoo, Chi Young Shim, Geu-Ru Hong, Namsik Chung
BACKGROUND: Carotid intima media thickness (CIMT) and the presence of carotid plaque have been used for risk stratification of cardiovascular disease (CVD). To date, however, the association between multi-directional functional properties of carotid artery and CVD has not been fully elucidated. We sought to explore the multi-directional mechanics of the carotid artery in relation to cardiovascular risk. METHODS: Four hundred one patients who underwent carotid ultrasound were enrolled between January 2010 and April 2013...
September 2016: Journal of Cardiovascular Ultrasound
Vincent Poulichet, Axel Huerre, Valeria Garbin
Bubbles stabilised by colloidal particles can find applications in advanced materials, catalysis and drug delivery. For applications in controlled release, it is desirable to remove the particles from the interface in a programmable fashion. We have previously shown that ultrasound waves excite volumetric oscillations of particle-coated bubbles, resulting in precisely timed particle expulsion due to interface compression on a ultrafast timescale [Poulichet et al., Proc. Natl. Acad. Sci. U. S. A., 2015, 112, 5932]...
September 14, 2016: Soft Matter
Maurizio Bernasconi, Alessio Casutt, Angela Koutsokera, Igor Letovanec, Frédéric Tissot, Laurent P Nicod, Alban Lovis
The role of radial-endobronchial ultrasound (R-EBUS) assisted transbronchial biopsy (TBB) for the diagnosis of peripheral pulmonary lesions is well established. However, no study has addressed its safety and value in hemato-oncological patients presenting with non-resolving infiltrates during persistent febrile neutropenia. To assess safety and feasibility of R-EBUS assisted TBB in severe thrombocytopenic and neutropenic patients. Over a period of 18 months, eight patients were assessed with R-EBUS assisted TBB after adequate platelet transfusion...
October 4, 2016: Lung
Ping Yeap Loh, Hiroki Nakashima, Satoshi Muraki
The present study investigated the effects of grip on changes in the median nerve cross-sectional area (MNCSA) and median nerve diameter in the radial-ulnar direction (D1) and dorsal-palmar direction (D2) at three wrist angles. Twenty-nine healthy participants (19 men [mean age, 24.2 ± 1.6 years]; 10 women [mean age, 24.0 ± 1.6 years]) were recruited. The median nerve was examined at the proximal carpal tunnel region in three grip conditions, namely finger relaxation, unclenched fist, and clenched fist. Ultrasound examinations were performed in the neutral wrist position (0°), at 30°wrist flexion, and at 30°wrist extension for both wrists...
2016: PeerJ
Hendrik H G Hansen, Gert Jan de Borst, Michiel L Bots, Frans L Moll, Gerard Pasterkamp, Chris L de Korte
BACKGROUND AND PURPOSE: Carotid plaque rupture is a major cause of stroke. Key issue for risk stratification is early identification of rupture-prone plaques. A noninvasive technique, compound ultrasound strain imaging, was developed providing high-resolution radial deformation/strain images of atherosclerotic plaques. This study aims at in vivo validation of compound ultrasound strain imaging in patients by relating the measured strains to typical features of vulnerable plaques derived from histology after carotid endarterectomy...
September 29, 2016: Stroke; a Journal of Cerebral Circulation
Srinidhi J Meera, Tomo Ando, Daniel Pu, Shivaprasad Manjappa, Cynthia C Taub
PURPOSE: The left ventricle (LV) undergoes physiologic remodeling in adaptation to the hemodynamic changes that occur in pregnancy. Speckle tracking echocardiography (STE) is a novel and reliable tool to evaluate subtle myocardial alterations that have been utilized to assess myocardial changes in patients with diabetes mellitus (DM) but not in patients with gestational DM (GDM). We seek to evaluate changes in LV function using STE in patients with GDM compared with women with normal pregnancy...
September 28, 2016: Journal of Clinical Ultrasound: JCU
Mary Clare Luca, Andrew Liuni, Paula Harvey, Susanna Mak, John D Parker
In premenopausal women, ovarian steroids are felt to play a role in the prevention of cardiovascular disease. We aimed to assess whether menstrual cycle variations in estrogen can modify the response to ischemia-reperfusion (IR) injury in humans. In an investigator-blinded crossover study, 10 healthy premenopausal women with regular menstrual cycles were studied. They had flow-mediated dilatation (FMD) measured by ultrasound in the radial artery before and after IR (15 min of brachial artery ischemia, 15 min of reperfusion) during both the early and late follicular phases of the menstrual cycle...
July 19, 2016: Canadian Journal of Physiology and Pharmacology
Daniel Chiung Jui Su, Mei-Chen Yeh, Willy Chou
No abstract text is available yet for this article.
September 2016: PM & R: the Journal of Injury, Function, and Rehabilitation
Hu-Ping Song, Bing-Yu Tian, Jing Peng
AIM: To evaluate the efficacy of toric intraocular lens markers-assisted implantation of the scleral-fixated intraocular lens (SFIOL). METHODS: From October 2010 to December 2013, all patients who had undergone secondary SFIOL implantation were assigned to group 1 and 2, in group 1 SFIOL was performed with the assist of radial keratotomy (RK)-marker, and in group 2 SFIOL was performed with the assisted of toric intraocular lens markers (T-and axis markers). Patients' demographic data and information on baseline preoperative visual acuity, indication for surgery and latest postoperative visual acuity were collected and analyzed...
2016: International Journal of Ophthalmology
Rami M Abazid, Osama A Smettei, Mohamed Z Mohamed, M Obadah Kattea, Annie Suresh, Yasir Beshir, Haitham Sakr
BACKGROUND: The transradial approach has become the preferred vascular access during conventional coronary angiography (CCA). Hereby, we evaluated the impact of pre-procedural radial artery diameter (RAD), the cross-sectional area (CSA), and the perimeter on vascular complications (VACs). METHODS: We conducted a single-center prospective analysis of 513 patients who underwent CCA. Radial artery ultrasonography was performed before and after CCA to measure the RAD, CSA, and perimeter...
September 26, 2016: Cardiology Journal
Orhan Maden, Habibe Kafes, Kevser Gülcihan Balci, Muharrem Tola, Mehmet Timur Selçuk, Cengiz Burak, Elif Hande Çetin, Hatice Selçuk, Mustafa Mücahit Balci, Halil Lütfü Kısacık
Although heparin administration has reduced the incidence of radial artery occlusion (RAO) during the transradial coronary angiography (TRCA), the effective activated clotting time (ACT) value for guiding unfractionated heparin dosing in patients undergoing TRCA is unknown. Four hundred thirty-two patients who were scheduled for elective TRCA were enrolled in our prospective study. All the patients received a standard dose of 5,000 IU unfractionated heparin. Anticoagulation level was assessed by ACT measurements that were taken at the end of the procedure just before the sheath removal...
August 23, 2016: American Journal of Cardiology
Radoslava Vazharova, Svetlana Vragaleva, Violeta Dimitrova, Samuil Ivanov, Lubomir Balabanski, Maxim Malinov, Draga Toncheva
Congenital anomalies affect 1% to 2% of the newborns. The urinary tract and the kidneys are involved in 4-5% of the cases while upper-extremities abnormalities are present in 10%. Certain anomalies occur in isolation, whereas others are associated with systemic conditions. The prenatal detection of fetal anomalies compatible with life is a challenge for both the parents and the physician. The prognosis for the fetus/newborn and the reproductive decisions of the family largely depend on the causes underlying the disease...
2016: Case Reports in Obstetrics and Gynecology
David B Kantor, Erik Su, Carly E Milliren, Thomas W Conlon
OBJECTIVE: Peripheral arterial catheterization is a common invasive procedure performed in critically ill children. However, the benefits of using ultrasound guidance for this procedure in critically ill children, especially when used by inexperienced trainees, are unclear. Our aims were to evaluate whether the use of ultrasound guidance for the placement of radial arterial catheters reduced time and improved success when compared with the palpation method and also to determine patient and trainee variables that influence procedure outcomes...
September 14, 2016: Pediatric Critical Care Medicine
Marie Aouad-Maroun, Christian K Raphael, Samia K Sayyid, Fadi Farah, Elie A Akl
BACKGROUND: Arterial line cannulation in paediatric patients is traditionally performed by palpation or with Doppler auditory assistance in locating the artery before catheterization. It is not clear whether ultrasound guidance offers benefits over these methods. OBJECTIVES: To assess first attempt success rates and complication rates when ultrasound guidance is used for arterial line placement in the paediatric population, as compared with traditional techniques (palpation, Doppler auditory assistance), at all potential sites for arterial cannulation (left or right radial, ulnar, brachial, femoral or dorsalis pedis artery)...
September 14, 2016: Cochrane Database of Systematic Reviews
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