bluuebunny/crossref_metadata_2025_split huggingface dataset:
Retrospective Analysis of Arthrodesis from Various Options after Anterior Cervical Discectomy
Authors: Sharma Vinaysagar , Singh Shashwat Kumar 
Published: January 2018

ABSTRACT
Introduction: Anterior cervical discectomy is a surgical procedure performed to treat a herniated/degenerated disc in the cervical region. There have been various studies comparing arthrodesis rates among various procedures. Our patients belonged to varied socioeconomic background and underwent anterior cervical microdiscectomy without/with instrumentation. Aim: The present study was performed to study and compare the arthrodesis rates in the patients operated for anterior cervical microdiscectomy with and without fusion/instrumentation procedures at our institution. Materials and Methods: This is a retrospective study performed at Vydehi Institute of Medical Sciences and Research Centre, Bengaluru. Pre- and post-operative X-rays were assessed in 96 patients who had undergone anterior cervical discectomy with/without fusion from June 2012 to June 2015. Radiographic arthrodesis was assessed in all patients. An arbitrary grading was designed by us and categorized into Grade I to IV. The criteria considered for adequate arthrodesis in this study were: (a) <2° movement on dynamic X-rays, (b) restored disc space height (±2 mm accepted), and (c) evidence of solid bone mass around disc space. Arthrodesis was categorized as Grade I if all the above 3 criteria on X-rays was fulfilled, Grade II if any 2 of the criteria was fulfilled, Grade III if any 1 of the criteria was fulfilled, and Grade IV when pseudoarthrosis/none of the criteria was fulfilled. Grade I arthrodesis was noted in about 79 patients (82.2%), Grade II in 14 patients, and only 3 patients had Grade III arthrodesis. There were no patients with absent arthrodesis/pseudoarthrosis. Results: Satisfactory arthrodesis was noted in 82% of the total patients, with patients undergoing fusion ± instrumentation procedure having better results. Conclusions: Arthrodesis by an interbody graft/implant with/without plating increases chances of success as compared to anterior cervical discectomy alone. Patients should be motivated for any of the available options for fusion/instrumentation
Effects of Crystalloid Preloading (20 ml/kg) on Hemodynamics in Relation to Postural Changes in Patients Undergoing Neurosurgical Procedures in Sitting Position
Authors: Ranjith M. , Bidkar Prasanna Udupi , Narmadalakshmi K. , Talawar Praveen R. 
Published: January 2018

ABSTRACT
Background: Hemodynamic disturbances are common during positioning the patients from supine to sitting for neurosurgical procedures. The reported incidence of hypotension varies from 5% to 32%. The aim of the study was to study the effect of crystalloid preloading on hemodynamic parameters during positioning the patient from supine to sitting position. Materials and Methods: In this prospective observational trial, 20 patients were enrolled. Two patients had a patent foramen ovale on transesophageal echocardiography and were excluded from the study. All the patients received 20 ml/kg of crystalloid (Ringer's lactate) before initiation of positioning. Physiological hemodynamic parameters such as heart rate, mean arterial pressure, central venous pressure, cardiac output (CO), stroke volume variation (SVV), cardiac index (CI), stroke volume (SV), and maximum and minimum inferior vena caval diameter (IVCD) were recorded after induction, during positioning at 30°, 60° inclination of the operating table and after the final sitting position. Results: Hemodynamic parameters were well maintained during positioning of the patients from supine to sitting position. Crystalloid preloading prevented the hypotension during positioning. There were no significant changes in hemodynamic parameters such as CO, SVR, SVV, CI, and SV. We did not find any correlation with changes in IVCD with changes in CO. Conclusion: A volume of 20 ml/kg of crystalloid preloading before positioning the patient from supine to sitting position maintains the hemodynamic stability and avoids the vasopressor requirement.
Upper Cervical Bronchogenic Cyst: A Rare Condition at a Rare Location
Authors: Jha Ranjeet Kumar , Mohanty Chandan B. , Deopujari Chandrashekhar E. , Shaikh Salman Tehran 
Published: January 2018

ABSTRACTIntraspinal bronchogenic cyst (SBC) is a rare but important cause of spinal cord compression, commonly seen in the cervicothoracic spine. We report a case of a 43-year-old male, presenting with complaints of neck pain, radiating to right shoulder, with numbness of right hand and fingers. Magnetic resonance imaging of the cervical spine revealed an intradural extramedullary, ventral cystic lesion extending from C2 to C4 vertebral levels. Complete surgical excision was performed, and the patient had a complete relief of symptoms postoperatively. Only 11 cases of SBCs have been reported in literature. We discuss the peculiar location of this lesion, possible embryological reasons and the overall surgical outcome of SBC.
Inadvertent Central Arterial Catheterization: An Unusual Cause of Ischemic Stroke
Authors: Katyal Nakul , Korzep Amanda , Newey Christopher 
Published: January 2018

ABSTRACTCentral venous catheter (CVC) insertion is extensively utilized in Intensive Care Units for evaluation of hemodynamic status, administration of intravenous drugs, and for providing nutritional support in critically ill patients. Unfortunately, CVC use is associated with complications including lung injury, bleeding, infection, and thrombosis. We present a patient with an acute ischemic stroke from an inadvertently placed CVC into the right common carotid artery. A 57-year-old male presented to our institution for left hemiplegia and seizures 2 days after a CVC was placed. He was found to have a right frontal ischemic stroke on computed tomography (CT). CT angiography noted that the catheter was arterial and had a thrombosis around it. He was started on a low-dose heparin infusion. A combination of cardiothoracic surgery and interventional cardiology was required to safely remove the catheter. Central arterial catheterization is an unusual cause for acute ischemic stroke and presents management challenges.
The Hermite–Joubert Problem and a Conjecture of Brassil and Reichstein
Authors: Nguyen Khoa Dang 
Published: January 2018

AbstractWe show that Hermite’s theorem fails for every integer $n$ of the form $3^{k_{1}}+3^{k_{2}}+3^{k_{3}}$ with integers $k_{1}>k_{2}>k_{3}\geqslant 0$. This confirms a conjecture of Brassil and Reichstein. We also obtain new results for the relative Hermite–Joubert problem over a finitely generated field of characteristic 0.
Modeling temperature manipulations in a circular model of birdsong production
Authors: Dima Germán César , Goldin M. A. , Mindlin Gabriel B. 
Published: January 2018

The nature of the neural mechanisms in the birdsong motor pathway that lead to the generation of respiratory patterns are a matter of extensive debate. In a top-down control paradigm, vocal gestures emerge from a unique timescale ruled by the telencephalic nucleus HVC, which engages other brain regions downstream. Another possibility is that the generation of motor instructions is distributed throughout the neural network, flowing both upstream and downstream. In this circular architecture, the song results from the integration of more than one timescale. In order to disambiguate these views, we used local focal cooling of HVC in canaries to manipulate the timescale present there. Within the frame of the circular model, we fitted the experimental pressure patterns of different types of syllables, which form a full song. We show that at least two separate timescales must be taken into account to reproduce them, one which is manipulated by cooling while the other remains unchanged. The modifications -stretching and breaking- of the syllables were quantitatively reproduced in this frame.
Received: 8 September 2017, Accepted: 7 December 2017; Edited by: A. Martí; Reviewed by: Y. S. Zhang, Princeton Neuroscience Institute, Princeton, NJ, USA.; DOI: http://dx.doi.org/10.4279/PIP.100002
Cite as: G C Dima, M A Goldin, G B Mindlin, Papers in Physics 10, 100002 (2018)
This paper, by G C Dima, M A Goldin, G B Mindlin, is licensed under the Creative Commons Attribution License 4.0.
Commentary on "Modeling temperature manipulation in a circular model of birdsong production"
Authors: Zhang Yisi S 
Published: January 2018

A Commentary on the paper by G. C. Dima et al. [Pap. Phys. 10, 100002 (2018)].Received: 8 January 2018, Accepted: 11 January 2018; Edited by: A. Martí; DOI: http://dx.doi.org/10.4279/PIP.100003Cite as: Y S Zhang, Papers in Physics 10, 100003 (2018)This paper, by Y S Zhang, is licensed under the Creative Commons Attribution License 4.0.
A refined method for calculating equivalent effective stratospheric chlorine
Authors: Engel Andreas , Bönisch Harald , Ostermöller Jennifer , Chipperfield Martyn P. , Dhomse Sandip , Jöckel Patrick 
Published: January 2018

Abstract. Chlorine and bromine atoms lead to catalytic depletion of ozone in the stratosphere. Therefore the use and production of ozone-depleting substances (ODSs) containing chlorine and bromine is regulated by the Montreal Protocol to protect the ozone layer. Equivalent effective stratospheric chlorine (EESC) has been adopted as an appropriate metric to describe the combined effects of chlorine and bromine released from halocarbons on stratospheric ozone. Here we revisit the concept of calculating EESC. We derive a refined formulation of EESC based on an advanced concept of ODS propagation into the stratosphere and reactive halogen release. A new transit time distribution is introduced in which the age spectrum for an inert tracer is weighted with the release function for inorganic halogen from the source gases. This distribution is termed the release time distribution. We show that a much better agreement with inorganic halogen loading from the chemistry transport model TOMCAT is achieved compared with using the current formulation. The refined formulation shows EESC levels in the year 1980 for the mid-latitude lower stratosphere, which are significantly lower than previously calculated. The year 1980 is commonly used as a benchmark to which EESC must return in order to reach significant progress towards halogen and ozone recovery. Assuming that – under otherwise unchanged conditions – the EESC value must return to the same level in order for ozone to fully recover, we show that it will take more than 10 years longer than estimated in this region of the stratosphere with the current method for calculation of EESC. We also present a range of sensitivity studies to investigate the effect of changes and uncertainties in the fractional release factors and in the assumptions on the shape of the release time distributions. We further discuss the value of EESC as a proxy for future evolution of inorganic halogen loading under changing atmospheric dynamics using simulations from the EMAC model. We show that while the expected changes in stratospheric transport lead to significant differences between EESC and modelled inorganic halogen loading at constant mean age, EESC is a reasonable proxy for modelled inorganic halogen on a constant pressure level.
Vliv SM-systému cvičení na úroveň posturální stability
Authors: Struhár Ivan , Dovrtělová Lenka 
Published: January 2018

The main aim of this study was to find out if exercise with elastic cord improved postural stability in a experimental group. Postural stability was measured by electronic balancing board with variable radius and integrated feedback. The exercise regimen was undertaken twice a week for 3 months. All participants were measured at the beginning of the study and then after 3 months. Participants had to stand on the electronic balance board during 30 seconds with open eyes and kept the board balanced using feedback from the screen. The results were expressed by number from 0 to 100. Twenty-nine elite gymnasts volunteered for this study. Participants did not report any neuromusculoskeletal injuries or other diseases that may affect balance performance. Before participating in the study, all parents of gymnasts read and signed the informed consent form. The participants were assigned to a control group (15 girls; mean age = 13.78±1.62 years; mean height = 1.57±0.09 m; mean mass = 46.16±8.71 kg) and experimental group (14 girls; mean age =14.1±2.0 years; mean height =1.56±0.08 m; mean mass = 45.6±10.55 kg). The total number of time spending in training was 18 hours per week. Experimental group performed 2 hours plus of exercise with elastic cord. One of the aims of the study was to decide if the differences between pre-test and post-test in experimental group will occur. The paired samples t-test was used (p=0.006578; the significance level 95%). The intervention programme with elastic cord improved postural stability in a group of elite gymnasts.
Výskyt vadného držení těla, nadváhy a obezity u dětí mladšího školního věku: pilotní studie
Authors: Miklánková Ludmila , Štěpaníková Marie 
Published: January 2018

The aim of our work was to chart and analyse the occurrence of primary school children defective body posture and its connection with obesity. The research sample was made of 204 primary school children (109 girls and 95 boys) of average age 8,1 ± 0,33 years (girls 8,3 ± 0,38, boys 7,9 ± 0,32). The probands average height was 134 ± 10,7 cm (girls 134,5 ± 11,6 cm, boys 134,1 ± 9,6 cm). The probands average weight was 31,1 ± 9,2 kg (girls 31,2 ± 9,8 kg, boys 31,1 ± 8,7 kg). The body height was measured with anthropometer, the body weight was weigh with Tanita BC571. The probands monitoring of body posture was charted by a diagnostic system DTP-3. A device analyses a body posture by a non-invasive method. We have investigated that 10 girls are obese, 9 girls have excessive weight, 15 girls are robust, 47 are proportional, 24 slim and 4 girls are thin. From research group are 9 boys obese, 9 boys have excessive weight, 11 boys are robust, 49 boys are proportional, 14 boys are slim and 3 boys are thin. From the results it is evident that in the area of a neck lordosis none of the probands is in a norm. From all the sample, 13 probands have a moderate deviation (6,4 %), 24 a substantial deviation (11,8 %) and 167 probands have a very substantial deviation (81,9 %). In the area of a loins lordosis there are 24 probands in a norm (11,8 %), 75 have a moderate deviation (36,8 %), 19 probands have a substantial deviation (9,3 %) and 86 probands have a very substantial deviation (42,2 %). In the area of a pectoral kyphosis there are 27 probands in a norm (13,2 %), 56 probands have a moderate deviation (27,5 %), 58 probands have a substantial deviation (28,4 %) and 63 probands have a very substantial deviation from the norm (30,9 %). From all the results it is obvio us that 18 % of girls and 19 % of boys are in the group of fat or obese children and that in the sample of primary school children there are very clear deviations from a good body posture. This fact was found out without any reference to their weight. A significant relation between the norm of body posture and BMI was found just in the area of neck lordosis (p ≤ 0,002).
Změny parametrů tělesného složení po akutním zatížení
Authors: Šeflová Iva , Jandová Soňa , Kosová Eliška , Hanušová Barbora , Mrázková Kristýna 
Published: January 2018

For the correct designation of a body composition parametres by the bioimpedance methods it is important to keep all range of conditions relating to measured individuals. The often mentioned restriction is also the interval of measuring from the acute physical load for at least 8 hours. The goal of our study is to find out the amount of changes at the parameters of the body composition by the bioimpedance method before and during the process of recovery and to specify the necessary time distance between measuring and the load. Methods 45 people took part in our. For the designation of a body composition we used the device BIA 2000-M. We measured the values of the body composition right before the load test, instantly within 5 minutes after it and finally in 60th minute after the test. Tested individuals underwent the load test VO2max at the treadmill ergometer. While measuring of a body composition by the bioimpedance methods 60 minutes after the tredmill ergometer load test there werent any statistically or factually significant changes at any of the values of the body composition and so it is possible to undergo this measuring without distortion of results, e. g. by the influence of loss or redistribution of fluids as a reaction changes to the load. While measuring of parameters of body composition right after the load there were noticed significant changes on more parameters especially on resistance on 50 kHz. Despite the fact that this value comes subsequently to the prediction equation for calculating of % body fat there werent noticed any significant changes on the variable of % body fat. The outcome of our study didnt prove the necessary minimal 8 hours gap between measuring and VO2max load test.
Didaktické řídicí styly ve výuce tělesné výchovy na 2. stupni základní školy: postoje a zkušenosti učitelů
Authors: Sliacky Jiří 
Published: January 2018

The paper brings the results of the second part of the research of the use of teaching styles in Physical Education lessons at the lower-secondary schools, whose objective is to analyze the attitude of the selected teachers to different teaching styles in the context of the priorities the Physical Education and their own experience of teaching. The purpose of this research is to place the results of the investigation, describing what the teaching styles are used in teaching, in the broader context teachers thinking. The data collection method for the analysis was a structured interview, which consisted of two main parts. The first debate on the priorities and objectives of Physical Education, really used of teaching styles and experiences with these styles. The second part consisted of an analysis of specific teaching situation from the video, captured for the first part of the research, focusing on the didactic grasp of subject matter. The results of interviews showed that although none of the interviewed teachers teaching styles as didactic theory doesn’t know, yet with some of the principles of this theory can intuitively operate and be aware of their benefit.
Porovnání závodní rychlosti plaveckého způsobu kraul a rychlosti dosažené během intervalů bez vlivu startu a obrátek
Authors: Šťastný Jan 
Published: January 2018

The race at 50 meters in freestyle swimming technique can be divided into four main phases -start, swimming at the surface, turn, and finish. With the usage of our measuring system called Tachograph, we mainly analyse the speed of swimming at the surface. Measuring principle does not allow accurate measurement of the speed after starts and turns, for that reason we evaluate the particular sections without the influence of the start and finish. We focused on the evaluation of the ratio of the measured mean swimming speed measured by the system Tachograph with the results of the current best racing performance from the 50 metre distance. For comparison we have processed the results of swimmers who participated in the semi-finals of 2010 European Championship. Our goal was to establish which results of the swimmers measured by Tachograph are at a sufficient level. The objective of the work has been accomplished with the help of statistical methods. Furthermore, we have ascertained that our recorded results differ from the results of elite swimmers whose results have been gained from the evaluation of the sections of swimming at the European Championship. We assume that the race results of our measured swimmers will differ as well. The error may be caused not only by the lack of motivation of the swimmers but also due to the constraints that our measurement system causes.
Tvorba a struktura elektronického nástroje Videoweb tělesné výchovy
Authors: Valkounová Eva 
Published: January 2018

Our paper describes creation and structure of electronic and research tool called Videoweb Physical Education (Videoweb PE – in Czech Videoweb TV), which is based on the videorecordings analysis. Videoweb PE is used to identify and to develop diagnostic competence of future physical education teachers in secondary education. This paper is also concerned with the evaluation research survey focused on feedback from students of the Faculty of Sports Studies (FSpS MU), who had the opportunity to work with Videoweb PE. During the evaluation research, we found out that students rated Videoweb PE as a very useful teaching study material. Based on the data obtained from the results of the evaluation survey there were outlined recommendations on the basis of which it is possible to optimize the Videoweb PE for its future use.
Závislost hypermobility na výskytu lehkých mozečkových dysfunkcí u závodnic v moderní gymnastice
Authors: Kapounková Kateřina , Struhár Ivan , Kopřivová Jitka 
Published: January 2018

The aim of the study was to ascertain information upon the occurrence of hypermobility as well as the symptoms of light brain dysfunction in rhythmic gymnasts and to prove their relationship. The research sample consisted of 78 girls from rhythmic gymnastics teams from the Czech Republic with average age 12,81 ± 2,47. The study used deliberate selection on the basis of chosen criteria: women, age 10 – 18 years, at least 5 let of specialised training in rhythmic gymnastics, week load at least 10 hours. The diagnostics of hypermobility used the method of measuring joint range with the aid of goniometer. The range of the movement of hip joint was measured and Janda test. The diagnostics of mild brain dysfunction diagnostics used orientation brain tests. It is the test of tax, which is aimed upon the proper aiming of movement, test of diadochokinesis, which is aimed at the ability to perform alternating movements, and the test of stability using Romberg pose on a balance platform with open eyes. The results of the goniometric measurement showed a significant flexibility of the gymnasts, mainly in the area of their hip joint (flexe right hip joint 161,09 °; ± 14,78 and flexe left hip joint 158,54 ° ± 14,05). When diagnosing mild brain dysfunction using tax, in both the upper and the lower extremities, no pathology was ascertained, on the contrary, however dysdiadochokinesis was found in 7 gymnasts. The results of the Romberg pose on the balance platform were mildly above the norm (compared with general population), nonetheless, the 7 people with dysdiadochokinesis showed results under the values of the general population. The people with dysdiadochokinesis, also showed worse results in the Romberg pose on the balance platform, as well as the symptoms of hypermobility, which where proved by goniometric examination.
Hodnotenie rýchlostno-silových schopností profesionálnych hokejistov v trojročnom časovom intervale
Authors: Kokinda Marek , Jesenský Martin , Turek Milan 
Published: January 2018

Speed and strength may be referred to as a factor determining success in ice hockey. These abilities are developed mainly during the summer preparatory period. Upon its completion players underwent testing aimed to determine body composition, strength and anaerobic alactic abilities by performing the Wingate test. The reference sample consisted of 11 senior category ice hockey players playing for the hockey teams in NHL, KHL, and Czech and Slovak national leagues. The evaluation of changes in speed and strength between 2013 and 2015 showed gains in lower-body explosive power after a one- -year period. Compared to players playing for hockey clubs abroad, Slovak players achieved higher level of explosive power and jump height as indicated by performances in lower-body explosive power test performed both with and without countermovement. Statistical analysis showed that power increases during the initial five-second interval at lower pedaling rate on the bicycle ergometer.