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Ultrasound and muscle

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https://www.readbyqxmd.com/read/28439445/ultrasound-guided-continuous-interpectoral-block-for-patient-undergoing-mastectomy-and-axillary-clearance
#1
Mario Fajardo-Pérez, Ece Yamak Altınpulluk, Javier García-Miguel, Borja Quintana-Gordon
Using a single dose of local anaesthetics has some disadvantages and provides limited analgesia depending on the pharmacokinetic characteristics of the local anaesthetic used. Nevertheless, the use of continuous perineural infusions allows sustained pain control. Ultrasound-guided interpectoral block followed by the placement of catheters in patients undergoing mastectomies with or without lymph node axillary dissections can result in sufficient pain control. We present a case of a 58-year-old woman undergoing mastectomy and axillary clearance who received ultrasound-guided continuous interpectoral block for postoperative analgesia...
April 2017: Turkish Journal of Anaesthesiology and Reanimation
https://www.readbyqxmd.com/read/28438882/rebiopsy-of-histological-samples-in-pretreated-non-small-cell-lung-cancer-comparison-among-rebiopsy-procedures
#2
Akito Hata, Nobuyuki Katakami, Shigeki Nanjo, Chiyuki Okuda, Reiko Kaji, Yukihiro Imai
AIM: The aim of the present study was to compare successful rate, failure reasons, and complications among procedures of histological rebiopsy. PATIENTS AND METHODS: We retrospectively reviewed medical records of histologically rebiopsied cases with non-small cell lung cancer. RESULTS: One hundred and eleven histological rebiopsies were performed in: 86 (77%) lung; 11 (10%) lymph node; 5 (5%) pleura; 4 (4%) liver; 2 (2%) muscle; 2 (2%) adrenal gland; and 1 (1%) rib...
May 2017: In Vivo
https://www.readbyqxmd.com/read/28437332/ultrasound-assessment-of-the-abdominal-muscles-at-rest-and-during-the-aslr-test-among-adolescents-with-scoliosis
#3
Paweł Linek, Edward Saulicz, Michał Kuszewski, Tomasz Wolny
STUDY DESIGN: Observational study. OBJECTIVE: Are there deviations in the thickness of abdominal muscles at rest in individuals with adolescent idiopathic scoliosis (AIS)? Are there deviations in abdominal muscular activity in people with AIS during the active straight leg raise (ASLR) test? SUMMARY OF BACKGROUND DATA: Ultrasound imaging can be used to assess the lateral abdominal muscle. Some authors suggest that scoliosis develops through a weakness or improper functioning of the abdominal muscles that cannot provide adequate support to the spinal segments...
May 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28435500/skin-to-intramuscular-compartment-thigh-measurement-by-ultrasound-in-pediatric-population
#4
Myto Duong, Albert Botchway, Jonathan Dela Cruz, Richard Austin, Kevin McDaniel, Cassie Jaeger
INTRODUCTION: Pediatric obesity threatens the efficacy of medications given intramuscularly. In anaphylactic patients, epinephrine auto-injector needle lengths are potentially too short to reach the muscle compartment in patients with elevated body habitus. The objective of the study was to determine needle-length requirements for intramuscular injections in pediatric patients. METHODS: We used ultrasound to measure the distance from skin to muscle compartment of the thigh in 200 pediatric patients of various weight and body mass index who presented to the emergency department...
April 2017: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28434702/inhibition-or-deletion-of-angiotensin-ii-type-1-receptor-suppresses-elastase-induced-experimental-abdominal-aortic-aneurysms
#5
Haojun Xuan, Baohui Xu, Wei Wang, Hiroki Tanaka, Naoki Fujimura, Masaaki Miyata, Sara A Michie, Ronald L Dalman
OBJECTIVE: Angiotensin (Ang) II type 1 receptor (AT1) activation is essential for the development of exogenous Ang II-induced abdominal aortic aneurysms (AAAs) in hyperlipidemic animals. Experimental data derived from this modeling system, however, provide limited insight into the role of endogenous Ang II in aneurysm pathogenesis. Consequently, the potential translational value of AT1 inhibition in clinical AAA disease management remains incompletely understood on the basis of the existing literature...
April 20, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28434187/ultrasound-guided-intra-articular-injection-of-the-radio-ulnar-radio-humeral-joints-and-ultrasound-guided-dry-needling-of-the-affected-limb-muscles-to-relieve-fixed-pronation-deformity-and-myofascial-issues-around-the-shoulder-in-a-case-of-complex-regional
#6
Renuka Pai, Lakshmi Vas
BACKGROUND: Complex Regional Pain Syndrome (CRPS) occurs due to different pathophysiological mechanisms. Presently there is no description of definitive treatment that can resolve the especially recalcitrant motor issues of disability in CRPS-1. CASE REPORT: We have herein described the successful management of motor disability with a multi-modal approach in a patient with CRPS-1 that occurred as a result of a fracture sustained in the lower end of the radius. Sensory/sudomotor/vasomotor symptoms were relieved completely by medications and stellate ganglion block, in two weeks...
April 23, 2017: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/28433437/optimal-ultrasound-exposure-conditions-for-maximizing-c2c12-muscle-cell-proliferation-and-differentiation
#7
Alice Rita Salgarella, Andrea Cafarelli, Leonardo Ricotti, Lorenzo Capineri, Paolo Dario, Arianna Menciassi
Described here is an in vitro systematic investigation of the effects on C2C12 myoblasts of exposure to finely controlled and repeatable low-intensity pulsed ultrasound of different frequencies (500 kHz, 1 MHz, 3 MHz and 5 MHz) and different intensities (250, 500 and 1000 mW/cm(2)). An in-house stimulation system and an ultrasound-transparent cell culture well minimized reflections and attenuations, allowing precise control of ultrasound delivery. Results indicated that a 3 MHz stimulation at 1 W/cm(2) intensity maximized cell proliferation in comparison with the other exposure conditions and untreated controls...
April 19, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28431182/joint-positions-matter-for-ultrasound-examination-of-ra-patients-increased-power-doppler-signal-in-neutral-versus-flat-position-of-hands
#8
Rusmir Husic, Angelika Lackner, Martin H Stradner, Josef Hermann, Christian Dejaco
Objective.: Position of joints might influence the result of US examination in patients with RA. The purpose of this work was to compare grey-scale (GS) and power Doppler (PWD) findings obtained in neutral vs flat position of hands. Methods.: A cross-sectional study of 42 RA patients with active disease. Two dimensional and 3D sonography of wrists and MCP joints were conducted in two different joint positions: neutral position, which is a slight flexion of the fingers with relaxed extensor muscles; and flat position, where all palm and volar sides of fingers touch the Table...
April 18, 2017: Rheumatology
https://www.readbyqxmd.com/read/28428648/ultrasound-of-ankles-in-the-diagnosis-of-complications-of-chikungunya-fever
#9
Roberto Mogami, João Luiz Pereira Vaz, Yêdda de Fátima Barcelos Chagas, Rodrigo Sperling Torezani, André de Almeida Vieira, Ana Célia Baptista Koifman, Yasmin Baptista Barbosa, Mirhelen Mendes de Abreu
OBJECTIVE: To describe the main ultrasound findings of chikungunya fever in the ankle. MATERIALS AND METHODS: This was a cross-sectional observational study involving 52 patients referred to the Hospital Universitário Pedro Ernesto and presenting with clinical and biochemical evidence of chikungunya fever. The examinations were performed by a radiologist with more than 20 years of experience in ultrasound. RESULTS: The predominant gender was female (in 88...
March 2017: Radiologia Brasileira
https://www.readbyqxmd.com/read/28416075/muscle-strength-rather-than-muscle-mass-is-associated-with-osteoporosis-in-older-chinese-adults
#10
Yixuan Ma, Liyuan Fu, Liye Jia, Peipei Han, Li Kang, Hairui Yu, XiaoYu Chen, Xing Yu, Lin Hou, Lu Wang, Wen Zhang, Kaijun Niu, Qi Guo
BACKGROUND: Assessment of the association of muscle strength and muscle mass with osteoporosis (OP) is of special interest as muscles are a potential target for interventions (i.e., strength training). METHODS: A cross-sectional descriptive study encompassing people aged ≥ 60 years (average age: 66.9 ± 6.2 years; men, n = 516; women, n = 652) in the Hangu area of Tianjin, China. The study populations were invited to participate in a comprehensive geriatric assessment...
April 13, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28413557/c2-primary-leiomyoma-in-an-immunocompetent-woman-a-case-report-and-review-of-literature
#11
Mohana Rao Patibandla, Madhukar T Nayak, A K Purohit, Megha Uppin, Sundaram Challa, Gokul Chowdary Addagada, Manisha Nukavarapu
Clinical case report and review of the literature. This is the first case of primary leiomyoma in an immunocompetent woman without previous history of uterine leiomyoma being reported in the literature to the best of our knowledge. Leiomyoma, a type of smooth muscle cell tumor, involving the vertebra is extremely rare. There were very few primary leiomyoma in patients with AIDS or in the immune-suppressed patients. This 48-year-old female came with H/o neck pain, weakness and bladder retention. On examination, tone increased in all four limbs, power on the right side of the limbs 4/5, power on the left upper limb 0/5, lower limb 3/5, left plantar was up going, decreased sensation over the left second cervical vertebra (C2) dermatome and all modalities decreased below C2...
January 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28413118/cadaveric-and-ultrasonographic-validation-of-needling-placement-in-the-cervical-multifidus-muscle
#12
César Fernández-de-Las-Peñas, Juan A Mesa-Jiménez, Jose A Paredes-Mancilla, Shane L Koppenhaver, Samuel Fernández-Carnero
OBJECTIVE: The aim of this study was to determine if a needle is able to reach the cervical multifidus during the application of dry needling or acupuncture. METHODS: Dry needling and ultrasound imaging of cervical multifidi was conducted on 5 patients (age: 32 ± 5 years) with mechanical neck pain and on 2 fresh cadavers (age: 64 ± 1 years). Dry needling was done using a needle of 40 mm in length inserted perpendicular to the skin about 1 cm lateral to the spinous process at C3-C4...
April 13, 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/28412846/changes-in-levator-hiatus-dimensions-during-pregnancy-and-after-delivery-in-nulliparas-a-prospective-cohort-study-using-3d-transperineal-ultrasound
#13
A Sanozidis, T Mikos, E Assimakopoulos, A Athanasiadis, T Tantanassis, B C Tarlatzis, V Papameletiou
PURPOSE: The purpose of this study was to investigate the changes that occur in the levator ani muscle (1) during pregnancy and (2) after labor depending on the mode of delivery in a cohort of nulliparas. MATERIALS & METHODS: A prospective cohort longitudinal study, consisting of 84 primiparas who were examined and recruited in an antenatal clinic was conducted. All participants were submitted to a real-time three-dimensional (3D) ultrasonographic evaluation of the levator ani at (1) 12, (2) 22, and (3) 32 weeks of pregnancy (4) and 4-6 months post delivery...
April 16, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28412225/enhancing-tissue-permeability-with-mri-guided-preclinical-focused-ultrasound-system-in-rabbit-muscle-from-normal-tissue-to-vx2-tumor
#14
Yao Sun, Xiaobing Xiong, Darpan Pandya, Youngkyoo Jung, Akiva Mintz, Satoru Hayasaka, Thaddeus J Wadas, King C P Li
High Intensity Focused Ultrasound (HIFU) is an emerging noninvasive, nonionizing physical energy based modality to ablate solid tumors with high power, or increase local permeability in tissues/tumors in pulsed mode with relatively low power. Compared with traditional ablative HIFU, nondestructive pulsed HIFU (pHIFU) is present in the majority of novel applications recently developed for enhancing the delivery of drugs and genes. Previous studies have demonstrated the capability of pHIFU to change tissue local permeability for enhanced drug delivery in both mouse tumors and mouse muscle...
April 12, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28410762/ultrasound-assessment-of-abdominal-muscle-thickness-in-women-with-and-without-low-back-pain-during-pregnancy
#15
Carol Ann Weis, Jennifer Nash, John J Triano, Jon Barrett
OBJECTIVE: The aim of this preliminary study was to determine the differences in abdominal musculature thickness, within 1 month of delivery, in women who experienced back pain during pregnancy compared with those who did not. METHODS: B-mode ultrasound imaging was used to measure abdominal muscle thickness on 76 postpartum participants who participated in a larger study; 47 women experienced back pain during pregnancy, and 29 did not. Participant data were stratified by group, and primary comparisons were based on these grouping across the abdominal muscles, including rectus abdominis (upper and lower fibers), external oblique, internal oblique, and transversus abdominis...
April 12, 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/28408372/effects-of-sugar-sweetened-beverage-consumption-on-microvascular-and-macrovascular-function-in-a-healthy-population
#16
Jordan Loader, Cindy Meziat, Rani Watts, Christian Lorenzen, Dominique Sigaudo-Roussel, Simon Stewart, Cyril Reboul, Gregory Meyer, Guillaume Walther
OBJECTIVE: To assess vascular function during acute hyperglycemia induced by commercial sugar-sweetened beverage (SSB) consumption and its effect on underlying mechanisms of the nitric oxide pathway. APPROACH AND RESULTS: In a randomized, single-blind, crossover trial, 12 healthy male participants consumed 600 mL (20 oz.) of water or a commercial SSB across 2 visits. Endothelial and vascular smooth muscle functions were assessed in the microcirculation using laser speckle contrast imaging coupled with iontophoresis and in the macrocirculation using brachial artery ultrasound with flow- and nitrate-mediated dilation...
April 13, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28407305/female-striated-urogenital-sphincter-contraction-measured-by-shear-wave-elastography-during-pelvic-floor-muscle-activation-proof-of-concept-and-validation
#17
Rafeef Aljuraifani, Ryan E Stafford, François Hug, Paul W Hodges
AIMS: Investigation of the function of the striated urogenital sphincter (SUS) is challenging because it is difficult to access and requires invasive measures. Ultrasound shear wave elastography (SWE) is a non-invasive real-time technique used to estimate tissue stiffness. As muscle stiffness can be used as an estimate of muscle force, SWE provides an opportunity to study contraction of the peri-urethral musculature. Validation of SWE to study SUS during functional tasks, such as pelvic floor muscle contractions, is required prior to application in clinical populations...
April 13, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28405949/transoral-endoscopic-thyroidectomy-preliminary-experience-in-italy
#18
Gianlorenzo Dionigi, Alessandro Bacuzzi, Matteo Lavazza, Davide Inversini, Luigi Boni, Stefano Rausei, Hoon Yub Kim, Angkoon Anuwong
Transoral endoscopic thyroidectomy vestibular approach (TOETVA) is a feasible novel surgical procedure that does not need visible incisions. We describe our initial experience with TOETVA. We recruited 15 patients who were willing to undergo TOETVA. Inclusion criteria were (a) patients who had a neck ultrasound (US) with a estimated thyroid diameter not larger than 10 cm; (b) US estimated gland volume ≤45 mL; (c) nodule size ≤50 mm; (d) a benign tumor, such as a thyroid cyst, single-nodular goiter, or multinodular goiter; (e) follicular neoplasm; (f) papillary microcarcinoma without evidence of metastasis...
April 12, 2017: Updates in Surgery
https://www.readbyqxmd.com/read/28402868/age-related-differences-in-twitch-properties-and-muscle-activation-of-the-first-dorsal-interosseous
#19
Jonathan D Miller, Trent J Herda, Michael A Trevino, Adam J Sterczala, Anthony B Ciccone, Justin X Nicoll
OBJECTIVE: To examine twitch force potentiation and twitch contraction duration, as well as electromyographic amplitude (EMGRMS) and motor unit mean firing rates (MFR) at targeted forces between young and old individuals in the first dorsal interosseous (FDI). Ultrasonography was used to assess muscle quality. METHODS: Twenty-two young (YG) (age=22.6±2.7years) and 14 older (OD) (age=62.1±4.7years) individuals completed conditioning contractions at 10% and 50% maximal voluntary contraction, (MVC) during which EMGRMS and MFRs were assessed...
March 24, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28397384/characteristics-and-effectiveness-of-vasodilatory-and-pressor-compensation-for-reduced-relaxation-time-during-rhythmic-forearm-contractions
#20
Robert F Bentley, Veronica J Poitras, Terrence Hong, Michael E Tschakovsky
During muscle contraction in rhythmic exercise muscle blood flow is significantly impeded by microvascular compression. The purpose of this study was to establish the nature and magnitude of vasodilatory and/or pressor compensatory responses during forearm exercise in the face of an increased duration of mechanical microvascular compression, and whether the effectiveness of such compensation was exercise intensity dependent. Seven healthy males (21.0 ± 1.8 yrs) completed progressive forearm exercise (24...
April 10, 2017: Experimental Physiology
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