140 research outputs found

    The Relationship Between Left Ventricular Filling Shortly After an Uncomplicated Myocardial Infarction and Subsequent Exercise Capacity

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    Resting measurement of only left ventricular systolic function, is not enough sufficient parameter that predicts exercise capacity in patients with cardiac disease. Therefore, left ventricular filling shortly after an acute myocardial infarction (AMI) was prospectively studied to determine whether it could predict subsequent exercise time. Consecutive AMI patients underwent Doppler and two-dimensional echocardiography within 48 hours of infarction. The study group consisted of 63 participants: 33 patients with an uncomplicated AMI who had undergone symptom-limited stress testing during recovery and 30 healthy subjects. Systolic function was evaluated by wall motion score index (WMSI), and diastolic one was assessed by the peak transmitral Doppler velocity in early diastole (E) and atrial systole (A), then by their ratio (E/A), normalized E/A ratio, and by diastolic filling period (DFP). Myocardial infarction (MI) size was measured electrocardiographically, using Selvester’s QRS scoring system (QRSSI) and then expressed in percentages. Healthy participants and patients were compared, through common parameters. The patients receiving BB treatment at the time of exercise testing, had a lower resting pulse, and achieved a lower maximal pulse, yet their exercise time was similar incomparison to that of the group not receiving BB therapy. Our results have shown a strong positive correlation between exercise time and WMSI (r = 0.77, p < 0.001) DFP (r = 0.56, p < 0,001), respectively weak negative correlation with QRSSI (r = –0.17, p < 0.001) and better negative correlation with normalized E/A ratio (r = –0.56, p < 0.001). This correlation was not influenced by beta-blokers (BB) at the time of stress testing. Normalized E/A ratio and DFP are the only diastolic function parameters, which predict exercise capacity during recovery, measured soon after an uncomplicated AMI

    The Relationship Between Type of Occlusion and TMJ Sounds

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    Utjecaj okluzije na nastanak zvuka u temporomandibularnom zglobu nije potpuno potvrđen. Svrha je ovog istraživanja bila utvrditi utjecaj okluzijskih koncepcija na nastanak zvuka u temporomandibularnome zglobu. Ispitivana skupina sastojale se je od 96 ispitanika u dobi od 24 - 52 godine (x = 35,03 ± 6,92). Okluzijske koncepcije određene su kliničkim pregledom. U ovisnosti o kontaktima na laterotruzijskoj i meziotruzijskoj strani ispitanici su kategorizirani u tri skupine (okluzija vođena očnjakom, grupna funkcija, te bilateralno uravnotežena okluzija). Kliničkim pregledom te auskultacijom s pomoću stetoskopa registrirano je postojanje zvuka. 70,83 % ispitanika imalo je okluziju vođenu očnjakom, 16,66 % grupnu funkciju, a 12,5 % bilateralno uravnoteženu okluziju. Zvuk u temporomandibularnom zglobu postojao je u 41,6 % slučajeva. Rezultati statističke raščlambe (Pearson ?2) pokazuju da između skupina nema statistički znatne razlike (?2 = 2,09 p = 0,351). Rezultati ovog istraživanja upućuju na zaključak da okluzijske koncepcije nemaju utjecaja na nastanak zvuka u temporomandibularnom zglobu.The influence of occlusion on the occurrence of sound in the temporomandibular joint had not been complately proved. The objective of this investigation was to determine the effect of type of occlusion on the occurrence of sounds in the TMJ. A group of 96 subjects, aged from 24-52 years (x = 35.03 ± 6.92) was examined. The type of occlusion was dentermined by clinical examination. Depending on the contacts on the laterotrusal and mediotrusal side the subjects were categorized into three groups (canine guided occlusion, group function and balanced occlusion). The existence of sounds was registred by means of a clinical examination and auscultation by stethoscope. In the examined group 70.83% of examinees had canine guidance, 16.66 % group function and 12.5 % balanced occlusion. Temporomandibular joint sound was present in 41.6 % of subjects. The results of the statistical analysis (Pearson ?2) shows no statistically significant difference between these 3 groups (?2 = 2.09 p = 0.351). The results of this study suggest that the type of occlusion does not have an influence on the occurrence of sound in the TMJ

    The Influence of Bruxism on Mandibular Movement

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    Etiologija temporomandibularnih poremećaja (TMD) još je uvijek nerazješnjena. Mogući utjecaj bruksizma predmet je mnogih rasprava. Svrha ovog istraživanja bila je odrediti učinak bruksizma na funkciju stomatognatoga sustava. Ispitivana se skupina sastojala od 46 bruksista u dobi od 24-52 godine (x = 35,03 ± 6,92). Kontrolnu skupinu tvorilo je 50 nebruksista u dobi od 25-51 (x = 37,24 ± 6,37). Dijagnoza bruksizma postavljena je anamnestičkim upitnikom i kliničkim pregledom. Za mjerenje kretnje čeljusti uporabljena je precizna klizna mjerka. Mjereno je maksimalno otvaranje, desna i lijeva maksimalna laterotruzijska kretnja, te maksimalna protruzijska kretnja. U skupini bruksista srednja vrijednost maksimalnog otvaranja bila je 48,51 ± 5,01 mm, a u skupini nebruksista 49,76 ± 6,92 mm. Srednja vrijednost maksimalne desne laterotruzijske kretnje u skupini bruksista iznosila je 10,04 ± 2,51 mm, a kontrolna skupina imala je srednju vrijednost 10,31 ± 2,47 mm. Maksimalna lijeva aterotruzijska kretnja u bruksista iznosila je 9,74 ± 2,50 mm, a vrijednost kontrolne skupine bila je 10,33 ± 2,30 mm. Maksimalna protruzijska kretnja kod bruksista iznosila je 9,53 ± 1,97 mm, a u kontrolnoj skupini 10,81 ± 2,29 mm. Pearson ?2 test pokazao je statistički znatnu razliku između ispitivanih skupina (p < 0,05) jedino u varijabli maksimalne protruzijske kretnje (t = 2,93, p = 0,0004). Rezultati ovog istraživanja upućuju na zaključak da bruksizam može imati samo ograničeni utjecaj na pokretljivost čeljusti.The aetiology of temporomandibular disorders (TMD) remains controversial. The role of bruxism is still under discussion. The objective of this investigation was to determine the effect of bruxism on the function of the stomatognatic system. A group of 46 bruxers, aged from 24-52 years (x = 35.03 ± 6.92) was examined. The control group consisted of 50 nonbruxers aged from 25-51 years (x = 37.24 ± 6.37) bruxism was assessed by a questionaire and clinical examination. A precise calliper was used to measure jaw movement. Maximal opening, right and left aterotrusion, and maximal protrusion were measured. The mean value of maximal opening in the bruxers group was 48.51 ± 5.01 mm, and in the nonbruxers group 49.76 ± 6.92 mm. Ther mean value of maximal right laterotrusion in the bruxers group was 10.04 ± 2.51 mm, and of left laterotrusion 9.74 ± 2.50 mm compared to the nonbruxers group where the mean value of right laterotrusion was 10.31 ± 2.47 mm, and left laterotrusion 10.33 ± 2.30 mm. The mean value of maximal protrusion in the bruxers group was 9.53 ± 1.97 mm, while in the nonbruxers group it was 10.81 ± 2.29 mm. Pearson ?2 test analysis shows statisticaly significant difference (p < 0.05) between the groups only in relation to the maximal protrusion (t = 2.93, p = 0.0004). The results of this study suggest that bruxism may only have a limited influence on mandibular mobility

    An Evaluation of the Quality of Tooth Preparation with Intraoral Parallometer-Axisgraph - Pilot Study

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    Measuring of the axial angle in practice shows an average angle of 20 degrees. The result of the high taper angles is a nonsatisfactory resistance form in 22.5% cases. The purpose was to examine the efficiency of the Jonjić oral parallelometer, known as the "AXISGRAPH", with respect to basic ergonomic rules, leading to savings in working energy and time and an increase in the quality of the preparation. METHODS: On the basis of clinical cases models were made of the upper and of the lower jaw of acrylic resin. The practitioner, who has 10 years experience, initially prepared each model set in a KAWO-EWL model, conventionally using freehand preparation, and then with an Axisgraph. Both models were in the same condition. Comparison was made between the time required for preparation, working energy used, and the quality of the preparation. The quality of the preparation was determined using the axial angle of the prepared tooth, measured by the method described in Jonjic\u27s dissertation. RESULTS: The freehand preparation took 80 minutes while preparation with the Axisgraph took 50 minutes. The average angle in freehand preparation was 15.03 degrees while, (the average angle of preparation was 10.4 degrees) using Axisgraph, and in 30 minutes less time than the freehand preparation. CONCLUSION: Preparation with the Axisgraph significantly saves time on preparation and allows better quality for the prepared tooth

    Influence of the Type of Occlusion on the Occurrence of Noncarious Cervical Lesion

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    INTRODUCTION: The term \u27noncarious cervical lesions’ (NCCL) stands to indicate the loss of hard tissue at the tooth cervix. This loss can be caused by different physical and/or chemical agents. One of the causes of NCCL can be occlusal stress, which lead to toothflexure and loss of enamel at the cervical area. In different types of occlusion there are numerous lateral eccentric movements that can cause NCCL. The purpose of this study was to determine differences in the frequency of NCCLs between patients with different occlusal conception. METHODS AND RESULTS: The study involved 815 persons over the age of 10 years, chosen at random. The cervical third of the vestibular surface of the upper and lower teeth was clinically examined. NCCLs were measured with plus and minus. The type of occlusal conception was established by clinical examination and classified as canine guidance, group function and combined occlusion. The results showed that the NCCLs were equally participate in both sexes, and in all three types of occlusion (Chi-square values were 1.96, df=2, p>0.05). CONCLUSION: The results of the study indicate that there is no statistically significant difference in the frequency of NCCLs between patients with different occlusal

    Newtonian Hydrodynamics of the Coalescence of Black Holes with Neutron Stars I: Tidally locked binaries with a stiff equation of state

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    We present a detailed study of the hydrodynamical interactions in a Newtonian black hole-neutron star binary during the last stages of inspiral. We consider close binaries which are tidally locked, use a stiff equation of state (with an adiabatic index Gamma=3) throughout, and explore the effect of different initial mass ratios on the evolution of the system. We calculate the gravitational radiation signal in the quadrupole approximation. Our calculations are carried out using a Smooth Particle Hydrodynamics (SPH) code.Comment: Replaces previous version which had figures separate from the text of the paper. Now 47 pages long with 19 embedded figures (the figures are the same, they were renumbered) Uses aaspp4.st

    BEING ME: Project report on best practices in learning and education to support LGBT ageing care and wellbeing

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    This report is based on our experiences of using a collaborative approach to identifying best practices for those involved in professional, vocational and community-based education and learning, in order to facilitate improved support for Lesbian, Gay, Bisexual and Transgender (LGBT) older people in health and social care. The best practices discussed here on learning and teaching, emerged from cross national collaboration and intercultural dialogue with a variety of stakeholders, including older LGBT people, educators, practitioners and learners using the World Café method. As one of the workstreams within the BEING ME European Project funded by EU Erasmus Plus (https://www.beingme.eu/), we aimed to promote and support the social inclusion of LGBT older people through positive interaction with educational institutions that prepare future professionals to work with older people. The best practices described here include a) identifying pedagogic approaches (the method and practice of teaching) b) generating examples of tailored educational resources c) recommendations on how to improve the knowledge and capabilities of future care professionals in the area of LGBT affirmative practices. Through a process of learning and exchange during two World Cafés, these areas were able to be more clearly articulated and should be read in conjunction with the BEING ME ‘Best Practice principles’ (https://beingme.eu/public/application/downloads/resources/being-me-best-practice-principles-20190212.pdf) which underpin good practice in the area of LGBT ageing care. Giving specific attention to identify ways of enhancing the skills, knowledge and capabilities of practitioners through education, should place them in a better position to develop a culture of support, openness and respect for LGBT identities which in turn are essential to LGBT older people's inclusiveness in care environments. The Best Practices Report provides the foundation for the development of the BEING ME educators online ‘toolkit’ aimed at both formal and informal learning settings and to a range of disciplines professions and vocations in health and social care

    The Late-Effect Of X-Irradiation on the Mouse Submandibular Gland

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    INTRODUCTION: Life-long severe xerostomia is a common complication after radiotherapy of head and neck malignancy. It is a clinical entity which causes a great deal of suffering and disability for the patient. Saliva is an important factor for denture retention. Hyposalivation causes reduced retention of full dentures. The aim of the study was to determine late consequences of irradiation in the mouse submandibular gland. MATERIAL AND METHODS : Mouse submandibular glands were locally X-irradiated by single dose irradiation with 15Gy. Day 90 post-irradiation tissues were analyzed by morphology and morphometry. RESULTS: Strong vacuolization of almost all acini was noted. Kariopyknotic nuclei were found in numerous acini and the largest amount of acini was in the lysis. The epithelial cells of the granular convoluted tubule were degenerated and desquamated in the lumen, and some granular convoluted tubules were in the lysis. In the interstitial connective tissue disseminated focal mononuclear infiltrate was found. With respect to the control group a statistically significant decrease in the number of acinar cells (p<0.001) was determined, as well as a significant increase in the number of granular convoluted tubule cells (p<0.001). Whereas the number of intercalated duct cells was not different with respect to the control (p=0.10). CONCLUSION: The results of this study suggest that hypofunction in the late stage is a consequence of morphological changes and loss of acinar cells. The patients should use a saliva substitute to alleviate their symptoms easier

    Pedagogical principles and methods underpinning education of health and social care practitioners on experiences and needs of older LGBT+ people: findings from a systematic review

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    There is a growing awareness of the need for LGBT + competency training to ensure that the health and social care services offered to older LGBT + people is affirmative and gender sensitive. To conduct a synthesis of the literature that describes the pedagogical principles, curriculum content and methods (teaching and assessment) used to educate health and social care practitioners on the experiences and needs of older LGBT + people. Systematic thematic review of literature. MEDLINE, CINAHL, PsycINFO, EMBASE, Web of Science, Social Sciences Index, ERIC. In accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Statement, this review examined peer-reviewed papers published in English, prior to April 2018 that addressed pedagogical and curriculum issues on the inclusion of needs and experiences of older LGBT + people. The combined searches yielded 2214 papers of which 17 papers were eligible for inclusion, 10 discussion papers and 7 evaluation studies. Analysis identified the following themes: i) Acknowledging the wider historical context of older LGBT + people's lives; ii) Recognising that older LGBT + people are not a homogenous group; iii) Incorporating a multitude of theories and models from different perspectives; iv) Alerting practitioners to the health issues and disparities facing older LGBT + people; v) Including content that supports inclusive care for older LGBT + people; vi) Addressing barriers to older LGBT + people accessing health care; vii) Interactive activities are the preferred pedagogical strategy; viii) Involving older LGBT + people in curriculum development is a core principle; and ix) Mandatory education is not always the solution. As the field matures there is a need for more exploration of curriculum principles, assessment strategies and strategies to overcome barriers to the inclusion of issues experienced by older LGBT + people within curricula. [Abstract copyright: Copyright © 2019 Elsevier Ltd. All rights reserved.
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