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https://www.readbyqxmd.com/read/29683923/effects-of-age-and-sex-on-inspiratory-muscle-activation-patterns-during-exercise
#1
Yannick Molgat-Seon, Paolo B Dominelli, Andrew H Ramsook, Michele R Schaeffer, Lee M Romer, Jeremy D Road, Jordan A Guenette, A William Sheel
PURPOSE: Characterize the effects of age, sex, and their interaction on inspiratory muscle activation patterns during exercise. METHODS: Twenty younger (20-30y, n=10 women) and twenty older (60-80y, n=10 women) subjects performed an incremental cycle exercise test. Electromyography of the scalene (EMGsca) and sternocleidomastoid (EMGscm) muscles were measured using skin surface electrodes, while diaphragm electromyography (EMGdi) and esophageal and transdiaphragmatic pressures were measured using an esophageal catheter...
April 21, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29618110/identification-of-myofascial-trigger-points-in-breast-cancer-survivors-with-upper-limb-pain-interrater-reliability
#2
An De Groef, Marijke Van Kampen, Evi Dieltjens, Sophie De Geyter, Lore Vos, Tessa De Vrieze, Inge Geraerts, Nele Devoogdt
Objective: Despite the increasing awareness of the contribution of myofascial dysfunctions to upper limb pain in breast cancer survivors, reliability of the identification of myofascial trigger points (MTPs) in this population has not yet been investigated. Therefore, the aim of the present study was to investigate the interrater reliability of the identification of MTPs by palpation at the upper limb region in breast cancer survivors with upper limb pain. Design: Interrater reliability study...
November 22, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/29602291/surface-electromyographic-evaluation-of-the-neuromuscular-activation-of-the-inspiratory-muscles-during-progressively-increased-inspiratory-flow-under-inspiratory-resistive-loading
#3
H Sekiguchi, Y Tamaki, Y Kondo, H Nakamura, K Hanashiro, K Yonemoto, T Moritani, I Kukita
This study aimed to evaluate neuromuscular activation in the scalene and sternocleidomastoid muscles using surface electromyography (EMG) during progressively increased inspiratory flow, produced by increasing the respiratory rate under inspiratory-resistive loading using a mask ventilator. Moreover, we attempted to identify the EMG inflection point (EMGIP ) on the graph, at which the root mean square (RMS) of the EMG signal values of the inspiratory muscles against the inspiratory flow velocity acceleration abruptly increases, similarly to the EMG anaerobic threshold (EMGAT ) reported during incremental-resistive loading in other skeletal muscles...
March 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29570722/thoracic-dysfunction-in-whiplash-associated-disorders-a-systematic-review
#4
Nicola R Heneghan, Richard Smith, Isaak Tyros, Deborah Falla, Alison Rushton
BACKGROUND: Research investigating Whiplash Associated Disorder (WAD) has largely focused on the cervical spine yet symptoms can be widespread. Thoracic spine pain prevalence is reported ~66%; perhaps unsurprising given the forceful stretch/eccentric loading of posterior structures of the spine, and the thoracic spine's contribution to neck mobility/function. Approximately 50% WAD patients develop chronic pain and disability resulting in high levels of societal and healthcare costs. It is time to look beyond the cervical spine to fully understand anatomical dysfunction in WAD and provide new directions for clinical practice and research...
2018: PloS One
https://www.readbyqxmd.com/read/29559089/henryk-hilarowicz-the-forgotten-polish-inventor-and-pioneer-of-the-interscalene-brachial-plexus-block
#5
Jerzy Wordliczek, Joanna Jakowicka-Wordliczek, Renata Zajaczkowska
Professor Henryk Hilarowicz was a Polish surgeon who first described the technique of brachial plexus block performed in the interscalene groove between the anterior and middle scalene muscles. The article devoted to the technique appeared in the German-language journal Zentralblatt für Chirurgie in 1925, 45 years before Alon Winnie, who is widely regarded as the originator of this method, published his paper in Anesthesia & Analgesia in 1970.
January 2018: Journal of Anesthesia History
https://www.readbyqxmd.com/read/29457395/-effects-of-patient-controlled-infraclavicular-brachial-plexus-block-for-postoperative-pain-and-surgical-efficacy-in-patients-with-terrible-tyriad-of-the-elbow
#6
Wang Xiu-Zhen, Ye-Ying Ge, Guang-Yao Ye, Jing-Wei Zhang, Wei-Hu Ma
OBJECTIVE: To study the effects of ultrasound guided inter-scalene brachial plexus block and patient-controlled infraclavicular brachial plexus block for postoperative pain and surgical efficacy in patients with terrible tyriad of the elbow. METHODS: From March 2015 to August 2016, 60 patients with terrible tyriad of the elbows were treated in Ningbo No.6 Hospital with ASA I to II internal fixation. There were 32 males and 28 females, ranging in age from 16 to 70 years old, with a mean age of (55...
November 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29426743/bridging-multimodal-pain-management-provides-48-hour-pain-control-in-patients-undergoing-total-shoulder-replacement
#7
Chandrakanth Boddu, Ashley Genza, Peter D McCann
BACKGROUND: We report our experience with a bridging multimodal pain management program that provides comprehensive 48-hour pain control in patients undergoing total shoulder replacement (TSR). METHODS: The study included all patients undergoing unilateral TSR by 1 surgeon between May 2015 and April 2017. There were 62 patients (23 men, 39 women) with an average age of 68 years (range 38-92 years). Of these, 31 underwent standard nonconstrained TSR and 31 underwent reverse TSR...
February 7, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29410587/correlation-between-diaphragm-thickness-and-respiratory-synergist-muscle-activity-according-to-severity-of-chronic-obstructive-pulmonary-disease
#8
Jeong-Il Kang, Dae-Keun Jeong, Hyun Choi
[Purpose] This study aims to analyze the effect that moderate to severe chronic obstructive pulmonary disease (COPD) has on the respiratory synergist muscles. The results will provide basic data that can be used in the clinical management of COPD. [Subjects and Methods] The subjects in the study were 47 male patients with COPD between 55 and 70 years old who were treated in a medical institution located in Jeollanam-do Province, South Korea, from October 2015 to December 2016. Measurements were analyzed to determine the correlation between the diaphragm thickness and the respiratory synergist muscle activity in patients with mild COPD...
January 2018: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29410583/correlation-between-pulmonary-functions-and-respiratory-muscle-activity-in-patients-with-forward-head-posture
#9
Jeong-Il Kang, Dae-Keun Jeong, Hyun Choi
[Purpose] The purpose of this study is to determine the effect that secondary postural deformities and chronic postural abnormalities have on lung capacity, as well as correlate the activity of the respiratory muscles. The results provide basic objective data about the forward head posture and respiratory muscle activity that can be used in clinical situations. [Subjects and Methods] The subjects used in this study were 24 patients aged 25 to 35 years old who visited a hospital in Jeollanam-do Province, Korea, between September 2015 and January 2016...
January 2018: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29396981/novel-surgical-approach-for-decompression-of-the-scalene-triangle-in-neurogenic-thoracic-outlet-syndrome
#10
Robert R Hagan, Joseph A Ricci, Kyle R Eberlin
Thoracic outlet syndrome (TOS) is a cause of upper extremity and shoulder dysfunction. TOS can present with a wide range of symptoms due to compression of the brachial plexus or its branches during their passage through the cervicothoracobrachial region or scalene triangle. There are three types of TOS: arterial, venous, and neurogenic. Neurogenic TOS (nTOS) is by far the most frequent type and represents more than 95% of all cases. Historically, surgical intervention for all types of TOS has evolved based on the treatment for a vascular etiology and has typically included a first rib resection...
February 2, 2018: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/29392062/posttraumatic-intramuscular-hemangioma-arising-from-scalene-muscles-in-supraclavicular-region
#11
Erkan Öztürk, Eren Yılmaz, İlker Erdinç Öztürk, Beldan Polat, Kadir Serkan Orhan
Intramuscular hemangiomas (IMH) account for <%1 of all hemangiomas and are rarely located in the head and neck region. The most common site of origin in the head and neck is the masseter muscle, whereas IMH originating from the scalene muscles are rarely seen. Surgical excision of intramuscular hemangioma is considered the main treatment modality. Here we present the case of a male patient aged 17 with IMH that occured after blunt trauma in the supraclavicular region, fed by the thyrocervical and costocervical trunks, and with an arteriovenous shunt...
June 2017: Turkish Archives of Otorhinolaryngology
https://www.readbyqxmd.com/read/29319095/energy-landscapes-for-ellipsoids-in-non-uniform-ac-electric-fields
#12
Isaac Torres-Díaz, Bradley Rupp, Yuguang Yang, Michael A Bevan
We report a closed-form analytical model for energy landscapes of ellipsoidal particles in non-uniform high-frequency AC electric fields to identify all possible particle positions and orientations. Three-dimensional equilibrium positions and orientations of prolate (rx = ry < rz ), oblate (rx = rz > ry ), and scalene (rx ≠ry ≠rz ) ellipsoids are reported vs. field frequency and amplitude, which are determined from energy landscape minima. For ellipsoids within non-uniform electric fields between co-planar parallel electrodes, the number of configurations of position and orientation is 6 for prolate, 5 for oblate, and 9 for scalene ellipsoids...
February 14, 2018: Soft Matter
https://www.readbyqxmd.com/read/29233633/dynamic-ct-angiography-for-the-diagnosis-of-patients-with-thoracic-outlet-syndrome-correlation-with-patient-symptoms
#13
Romain Gillet, Pedro Teixeira, Jean-Baptiste Meyer, Aymeric Rauch, Ariane Raymond, François Dap, Alain Blum
INTRODUCTION: Vasculo-nervous structures serving the upper limbs may be compressed as they pass through three areas: the inter-scalene triangle (IST), the costo-clavicular space (CCS) and the retropectoralis minor space (RMS). The diagnosis of thoracic outlet syndrome (TOS) is essentially clinical, but requires imaging to specify the site of compression, its grade and the existence of predisposing anatomical factors, in order to guide the treatment and eliminate the main differential diagnoses...
March 2018: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29184705/phrenic-nerve-decompression-for-the-management-of-unilateral-diaphragmatic-paralysis-preoperative-evaluation-and-operative-technique
#14
Reid Hoshide, Justin Brown
Background: Unilateral diaphragmatic paralysis (UDP) can be a very disabling, typically causing shortness of breath and reduced exercise tolerance. We present a case of a surgical decompression of the phrenic nerve of a patient who presented with UDP, which occurred following cervical spine surgery. Methods: The workup for the etiology of UDP demonstrated paradoxical movement on "sniff test" and notably impaired pulmonary function tests. Seven months following the onset of the UDP, he underwent a surgical decompression of the phrenic nerve at the level of the anterior scalene...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29121378/myopericytoma-of-the-neck-originating-in-the-middle-scalene-muscle-a-case-report
#15
Mark B Chaskes, John W Bishop, Matthew Bobinski, D Gregory Farwell
We report a case of myopericytoma of the neck. A 23-year-old woman noticed a small, nontender mass in her left supraclavicular fossa. The mass had grown over a period of 5 months, prompting her to seek evaluation. On examination, no motor or sensory deficits were present. Imaging suggested that a mass had originated in the middle scalene muscle. Computed-tomography-guided core needle biopsy demonstrated a spindle-cell neoplasm with smooth-muscle differentiation. Complete surgical excision was performed. Histopathologic and immunohistochemical evaluations of the tissue sample suggested a myopericytoma...
October 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/29106657/posterior-upper-rib-excision-for-neurogenic-thoracic-outlet-syndrome-feasibility-and-early-outcomes
#16
Kamran Aghayev, Ozcan Ciklatekerlio
BACKGROUND: There are several surgical treatment options for neurogenic thoracic outlet syndrome (n-TOS). However, the first rib has been shown to be the common denominator of all TOS forms and the degree of its resection has been shown to correlate with the long-term success. OBJECTIVE: To demonstrate the feasibility of posterior upper rib excision (PURE) and report early outcomes. METHODS: Nine patients presented with signs and symptoms of n-TOS...
July 6, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29059990/application-of-infrared-scanning-of-the-neck-muscles-to-control-a-cursor-in-human-computer-interface
#17
Seyede Mahya Safavi, Subramanian Meenakshi Sundaram, Ali Heydari Gorji, Neha Satishkumar Udaiwal, Pai H Chou
The feasibility of using infrared (IR) spectroscopy of the neck muscles in controlling a cursor in a 2-dimensional screen was assessed. The proposed technique utilizes two IR photoplethysmography sensors (λ = 940nm) to monitor the morphological changes of the Scalene and Sternocleidomastoid muscles. Since the reflection of the light has valuable information about the type of contraction, the direction of the movement (right/left, up/down) can be simply derived using two sensors. A MATLAB platform was developed in which a cursor moves using the recorded signal...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29050960/mapping-patterns-of-locoregional-recurrence-following-contemporary-treatment-with-radiation-therapy-for-breast-cancer-a-multi-institutional-validation-study-of-the-estro-consensus-guideline-on-clinical-target-volume
#18
Jee Suk Chang, Jeongshim Lee, Mison Chun, Kyung Hwan Shin, Won Park, Jong Hoon Lee, Jin Hee Kim, Won Sup Yoon, Ik Jae Lee, Juree Kim, Hye Li Park, Yong Bae Kim
BACKGROUND AND PURPOSE: To validate the ESTRO guideline on clinical target volume (CTV) delineation for breast cancer using a multi-centre dataset. MATERIALS AND METHODS: Patients with axial imaging of gross locoregional recurrence (LRR) were identified from 10 participating institutions. All patients received RT, albeit not to all regional node. The location of LRR was transferred to the corresponding area on representative axial computed tomography images and compared with ESTRO-CTV...
January 2018: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29047484/characterizing-ice-particles-using-two-dimensional-reflections-of-a-lidar-beam
#19
M Goerke, Z Ulanowski, G Ritter, E Hesse, R R Neely, L Taylor, R A Stillwell, P H Kaye
We report a phenomenon manifesting itself as brief flashes of light on the snow's surface near a lidar beam. The flashes are imaged and interpreted as specular reflection patterns from individual ice particles. Such patterns have a two-dimensional structure and are similar to those previously observed in forward scattering. Patterns are easiest to capture from particles with well-defined horizontal facets, such as near-horizontally aligned plates. The patterns and their position can be used to determine properties such as ice particle shape, size, roughness, alignment, and altitude...
July 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/28989623/endor-characterization-of-an-iron-alkene-complex-provides-insight-into-a-corresponding-organometallic-intermediate-of-nitrogenase
#20
Masaki Horitani, Katarzyna Grubel, Sean F McWilliams, Bryan D Stubbert, Brandon Q Mercado, Ying Yu, Prabhuodeyara M Gurubasavaraj, Nicholas S Lees, Patrick L Holland, Brian M Hoffman
A bio-organometallic intermediate, denoted PA, was previously trapped during the reduction of propargyl alcohol to allyl alcohol (AA) by nitrogenase, and a similar one was trapped during acetylene reduction, representing foundational examples of alkene binding to a metal center in biology. ENDOR spectroscopy led to the conclusion that these intermediates have η(2) binding of the alkene, with the hydrogens on the terminal carbon structurally/magnetically equivalent and related by local mirror symmetry. However, our understanding of both the PA intermediate, and of the dependability of the ENDOR analysis on which this understanding was based, was constrained by the absence of reference iron-alkene complexes for EPR/ENDOR comparison...
September 1, 2017: Chemical Science
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