2,598 research outputs found

    Cancellation of orthopaedic trauma cases

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    Evaluation of the effect of metformin on the inhibitory effect of oxytocin on potassium chloride stimulated goat ileum

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    The posterior pituitary hormone, oxytocin is expressed in the myenteric and submucous ganglia and nerve fibers along the entire human gastrointestinal (GI) tract. The role for oxytocin in the physiology and pathophysiology of the bowel remains to be clearly elucidated. Many studies have described that oxytocin exerts stimulatory or inhibitory effects on gut functions. Recently, mRNA for oxytocin and its receptor was found throughout the entire human GI tract. In this study, we examined the responses of the posterior pituitary hormone, oxytocin on the contractile responses to KCl and the effect of metformin on these responses as it affects the glucose transport and causes monoamine release in the gut

    An isolated pisiform fracture: a case report

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    With overall prevalence between 2% to 3%, carpal bone fractures are not encountered frequently in clinical practice. Amongst these, pisiform fractures have very low incidence of <0.2%, in which, more than half are associated with other carpal injuries, and sometimes ulnar styloid and ligamentous injuries. Thus, diagnosis of isolated pisiform fracture requires a very high index of suspicion. Hereby, authors report an isolated pisiform fracture in a 27 year old dentist who sustained an injury due to fall on outstretched hand. After radiographic confirmation in multiple views and CT scan, isolated-minimally displaced pisiform fracture was found. A below-elbow cast with slight palmar flexion was given for 4 weeks. He returned to normal pre-injury activities at 12 weeks

    Growth and Dissemination of Endodontic Knowledge

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    Background: Endodontics is a relatively young clinical specialty that received formal recognition by the American Dental Association in 1963 and by the Commission of Dental Accreditation in 1975. Biological and technological advances have allowed endodontics to evolve into a scientifically based specialty that uses many meticulous methods both at the laboratory and clinical levels. The history, growth and impact of endodontics can be followed by studying the quantity and quality of published literature and comparing it to other dental specialties. Purpose: The aim of this investigation was to use a variety of web based bibliometric tools and describe the growth and dissemination of endodontic knowledge both within and outside the specialty community. Specific aims included quantification of the entire endodontic literature, identification of types of research, analysis of publication patterns and discovery of who has supported and contributed to that knowledge. This overview of endodontic knowledge should provide information on how this may be enhanced in the future. Methods: A series of specific questions were developed that covered many aspects of literature quantification. The value of the literature was assessed by the use of the Impact Factor and citation analysis. Search strategies were developed that could utilize databases such as MEDLINE, Web of Science, Journal Citation Reports and Scopus. Results were summarized using descriptive statistics and by further analysis using linear regression and correlation techniques. Results: MEDLINE has indexed over 35,000 endodontically related papers since 1963. The two journals dedicated to the specialty, the Journal of Endodontics and 3 the International Endodontic Journal both publish more papers on endodontics than any other individual journal yet contain only around 20% of the all endodontic publications. The increase in the total number of research papers published each year in endodontics currently surpasses that in orthodontics and periodontics however, endodontics has fewer higher evidence-­‐based studies compared to periodontics. Government funding was the highest for clinical trials and randomized controlled trials. When analyzing clinical publications within four clinical categories of etiology, diagnosis, prognosis and therapy, endodontics has considerably more papers relating to orthograde root canal therapy compared to any other clinical category. The total number of papers retrieved from the diagnosis clinical category was highest in papers that looked at Periapical disease and similar trends were observed in the prognosis category for papers relating to Endodontic surgery. The significance, of endodontic publications as judged by the Impact Factor has increased substantially over the last ten years when compared to orthodontics and periodontics. The number of citations for endodontic papers has begun to increase rapidly in 2002 especially in the endodontic journals themselves. The majority of endodontic research has originated from the United States, Brazil and England and from small rather than large institutions.Master of ScienceCariology, Restorative Sciences, and EndodonticsDentistry, School ofUniversity of Michiganhttp://deepblue.lib.umich.edu/bitstream/2027.42/85729/1/VORA-MS_THESIS_FINAL_2011.pd

    Customised Alloy Blends for In-Situ Al339 Alloy Formation Using Anchorless Selective Laser Melting

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    The additive manufacturing process Selective Laser Melting (SLM) can generate large thermal gradients during the processing of metallic powder; this can in turn lead to increased residual stress formation within a component. Metal anchors or support structures are required to be built during the process and forcibly hold SLM components to a substrate plate and minimise geometric distortion/warpage due to the process induced thermal residual stress. The requirement for support structures can limit the geometric freedom of the SLM process and increase post-processing operations. A novel method known as Anchorless Selective Laser Melting (ASLM) maintains processed material within a stress relieved state throughout the duration of a build. As a result, metal components formed using ASLM do not develop signification residual stresses within the process, thus, the conventional support structures or anchors used are not required to prevent geometric distortion. ASLM locally melts two or more compositionally distinct powdered materials that alloy under the action of the laser, forming into various combinations of hypo/hyper eutectic alloys with a new reduced solidification temperature. This new alloy is maintained in a semi-solid or stress reduced state for a prolonged period during the build with the assistance of elevated powder bed pre-heating. In this paper, custom blends of alloys are designed, manufactured and processed using ASLM. The purpose of this work is to create an Al339 alloy from compositionally distinct powder blends. The in-situ alloying of this material and ASLM processing conditions allowed components to be built in a stress-relieved state, enabling the manufacture of overhanging and unsupported features

    Profile Study of Negative Autopsy among the Post Mortem Cases Referred from Medical Officers to Forensic Medicine Department, Ahmedabad, India

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    Background: The principal aim of an autopsy is to determine the cause of death, and the state of health of the person before he or she died. But in several instances even after detailed autopsy and various laboratory investigations, autopsy surgeon/ Forensic medicine expert cannot determine the cause of death and they end up with negative autopsy. The present study was carried out to find out the types of cases where we were unable to determine cause of death after autopsy at forensic medicine department, B J medical college, civil hospital, Ahmedabad, India.Methods: A total of 251 dead bodies were referred by Medical officers to forensic medicine department, B J medical college, Ahmedabad for expert post mortem examination from 1st January 2011 to 31st December 2015.Results: After thorough and complete post mortem examination, it was found that in 43(17.13%) cases no opinion as to the cause or nature of death could be given. Most common types of cases include decomposition (53.50%), and skeletal remains (23.25%).Conclusion: According to above mentioned facts it is clear that chances of getting cause of death is very poor if time lapse more and more after death like in decomposition and skeletal remains

    Osteonecrosis in patients with acute lymphoblastic leukaemia: a national questionnaire study

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    Objectives: To establish prevalence, management and long-term outcomes of osteonecrosis (ON) in young people diagnosed with acute lymphoblastic leukaemia (ALL) between 2003 and 2011. Design, setting, participants: This study assessed ON in 3113 patients aged 1–24 years who participated in the UK national leukaemia study UKALL 2003. UKALL 2003 recruited patients in 40 UK hospitals between 2003 and 2011 and included patients between ages 1 and 25 diagnosed with ALL. Results: 170 patients were diagnosed with ON, giving a prevalence of 5.5%. The multivariable analysis showed that the risk of ON was highest for children aged between 10 and 20 years (ages 10–15 years, OR 23.7, 95% CI 14.8 to 38.0; ages 16–20 years, OR 22.5, 95% CI 12.7 to 39.8, compared with age <10 years). Among ethnic groups, Asian patients had the highest risk of ON (OR 1.92, 95% CI 1.1 to 3.6, compared with White patients). Eighty-five per cent of patients with ON had multifocal ON. Thirty-eight per cent of patients with ON required surgery and 19% of patients with ON required a hip replacement. Fifteen per cent of patients who had surgery still describe significant disability or use of a wheelchair. Conclusions: ON has considerable morbidity for patients being treated for ALL, with a high burden of surgery. Age and ethnicity were found to be the most significant risk factors for development of ON, with Asian patients and patients aged 10–20 years at diagnosis of ALL at greatest risk. These results will help risk stratify patients at diagnosis of ALL, and help tailor future prospective studies in this area
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