La mémoire épisodique est la fonction neurocognitive humaine permettant de se souvenir des événements passés situés dans leur contexte spatio-temporel ainsi que de se rappeler d'exécuter des actions futures spécifiques et d'imaginer des événements futurs variés. Comme d'autres capacités complexes, son développement est lié à d'autres fonctions telles que les fonctions exécutives et la théorie de l'esprit. Elle peut être évaluée avec du matériel de laboratoire nécessitant une mémorisation de nouvelles informations et d'actions futures à réaliser plus tard (mémoires rétrospective et prospective, respectivement), ainsi que via des événements personnels (rappel du passé et imagination du futur ou mémoire autobiographique passée et future, respectivement). L'objectif de cette thèse était, d'une part, de comparer les aspects passé et futur de la mémoire épisodique dans une approche développementale de l'enfant d'âge scolaire au jeune adulte, tout en explorant les mécanismes sous-jacents. D'autre part, le but était également de comparer des tâches autobiographiques et des tâches de laboratoire plus écologiques en réalité virtuelle.Les résultats suggèrent un développement plus progressif de l'aspect futur de la mémoire épisodique (plus de différences chez les enfants), tandis que l'aspect passé semble être bien développé à l'adolescence. Concernant les mécanismes, les performances aux tâches autobiographique et en réalité virtuelle (corrélées entre elles) sont liées aux fonctions exécutives et aux capacités narratives ; de plus, les capacités de rappel lors du test de réalité virtuelle dépendent des fonctions exécutives, la mémoire autobiographique passée et future et la théorie de l'esprit (seulement pour le futur), tandis que les capacités de mémoire autobiographique dépendent de la mémoire du futur en réalité virtuelle en plus des fonctions exécutives et de l'âge.Ces données démontrent que malgré un développement plus progressif de l'aspect futur que passé de la mémoire épisodique, le fonctionnement mnésique dans des environnements virtuels est comparable à la mémoire au quotidien, compte tenu de leurs inter-corrélations et de leurs mécanismes au moins en partie communs. Par ailleurs, les tâches de réalité virtuelle peuvent trouver toute leur utilité dans l'évaluation des patients pédiatriques neurologiques dont les déficits mnésiques peuvent être plus ou moins subtils et se refléter plus aux contextes quotidiens qu'aux contextes des évaluations de type papier-crayon. / Episodic memory is the uniquely human neurocognitive function that enables us to recall past events situated in their spatio-temporal context and to remember to carry out specific future actions as well as imagine various personal future events. As all complex abilities, its functioning is linked to other cognitive capacities such as executive functions and theory of mind. It can be assessed with laboratory-based materials requiring the memorization of information and future actions to be recalled later (retrospective and prospective memory, respectively) and via personal events (recalling past ones and imagining future ones or past and future autobiographical memory, respectively). The aim of this thesis was, on the one hand, to compare both past and future aspects of episodic memory functioning in a wide developmental age span (from young schoolchildren to young adults), and to explore underlying developmental mechanisms. On the other hand, we also aimed to compare personal events¿ (autobiographical) tasks with more ecological laboratory tasks using virtual reality. Results suggest a more progressive development of the future aspect of episodic memory (more differences between children), whereas both retrospective and past autobiographical memory seem to be quite functional by adolescence. Regarding mechanisms, both autobiographical and virtual reality performance, in addition to correlating with each other, are linked to executive functions and narrative abilities; also, memory abilities assessed via virtual reality depend on executive functions, past and future autobiographical memory and (only future memory) on theory of mind performance, whereas autobiographical memory abilities depend on virtual reality-based future memory in addition to executive functions and age. Our data demonstrate that despite a more progressive development of the future aspect of episodic memory than of its past aspect, memory functioning in virtual environments is indeed comparable to daily life memory, as these abilities are strongly inter-linked and have at least partly common mechanisms. Also, virtual reality tasks can be used for memory assessments in pediatric neurological patients whose potential memory deficits can be more or less subtle and thus more detectable in daily life contexts as opposed to paper-and-pencil types of contexts.

<p>The driving force of conducting the two studies presented in this thesis is to examine ways that conceptual understanding and problem solving could be part of mathematics teaching, and through that, part of students' mathematical knowledge. The specific aims of the thesis are: 1) to characterize the classroom discourse of two, apparently similar, problem solving courses in teacher education and 2) to discuss the possibilities of developing two analytical approaches - the communicational approach to cognition and the dialogical approach - used for studying mathematical discourse. The two aims are elaborated on by means of data collected through audiotaped recordings and field notes from observations of problem-solving activities in engineering and teacher education. In relation to the first aim, the analysis of the classroom discourse within the two courses makes it clear that both courses displayed different kinds of discourse that could be broadly categorized in terms of: subject-oriented, didactically oriented, and problem solving oriented discourses. However, the comparisons between the two courses reveal a marked difference in the distribution of these categories of discourse. It is suggested that the introduction of explicit conceptual frameworks in teaching is of crucial importance for the topical focus of the classroom discourse, and for prospective teachers' opportunity to engage in mathematical productive discourse. The analyses of the two approaches for studying mathematical discourse reveal that the two frameworks can be further developed and the study also indicates ways in which such development can be achieved using a theory of contextualization and theories of mathematical learning. Finally, the thesis discusses theoretical and practical implications of the results, foregrounding issues of importance for the research on mathematical discourse, and for teachers and teacher educators involved in designing instructions for mathematical problem solving.</p>

Research problem: This research focused on the following problem statement: What management strategies can be developed and used to advance effective social justice practice in schools? Research aims: Arising from the problem question, the research aims were firstly to determine theoretically, the nature of social justice (Chapter Two) and secondly to identify and analyse theoretically, the determinants that contribute to social justice practices (Chapter Three). This was done by means of a comprehensive literature review. The third aim was to qualitatively analyse effective social justice praxis in selected schools in the North-West and Western Cape Provinces (Chapter Four and Five). From the analysis and literature review, management strategies for effective social justice practice in schools (Chapter Six) were developed as part of the empirical investigation. Research methodology: The empirical investigation realised the third aim, to analyse qualitatively effective social justice praxis in selected schools by means of individual and focus group interviews which were based on the philosophical paradigm of a constructivist-grounded theory and a hermeneutic, phenomenological methodology that enabled me to listen and be part of the discursive portrayals of the participant-principals’ effective social justice praxis. The qualitative data collection and methodology entailed considerations with regard to ethical conduct between myself and the role-players, i.e. the researcher, the Ethics Committee (NWU Faculty of Education Sciences), the role of departmental officials, the role of participant principals, and documentation used. Attention was paid to determine the target population, participant and sample selection from the North-West and Western Cape provinces in accordance with predetermined criteria. These criteria were, inter alia, that these principals would: have a proven track record to demonstrate an understanding of the concept of justice and social justice; would adhere to and implement legal determinants of social justice praxis with regard to the constitutional values and human rights; provide proven evidence of social justice praxis as equality, human dignity and freedom; implement political imperatives such as the Manifesto on Values, Education for All; acknowledge the need for fair distribution and educational transformation; provide a moral basis for recognition, identity formation and social justice praxis; apply a deliberative democratic praxis; promote accountability, school achievement, and as prospective and transformative leaders believe in and practice an embracing social justice. The researcher prepared the necessary documentation, the interview protocol and interview schedule to enter the field, as well as entering the field of research (principals at schools and district offices) to conduct and record the interviews which she afterwards transcribed. The method of qualitative data analysis included three phases: Phase I that considered the first hearing-reading, Atlas.ti™ dry-run and initial code-lists; Phase II, the translation processes, and Phase III, the abstraction and crystallisation processes. The criteria for soundness were established in the account of authentic validity and credibility of the study. The collected qualitative data was analysed by means of the Atlas.ti™ software programme as a result of which seven themes and three sub-themes for each theme emerged. These themes were the principal and social justice praxis, learners, education in general, constitutional values, educational partners, the government and political establishments, and social justice: its ontology and praxis. Development of management strategies: Education is about understanding and this study presented those management strategies that culminated in answers to the fundamental question: “What management strategies can be developed and used to advance effective social justice practice in schools?” The development of management strategies are the result of the literature review and the empirical investigation. The strategy development process consisted of a three-phase strategy framework: strategy planning (aims and objectives), strategy implementation (action plan and persons), and strategy evaluation. From this process, seven aims were developed in accordance with the seven identified themes: the principal, the learners, education in general, Constitutional values, partners in education, government, political and union matters, and the ontology and praxis of social justice. These management strategies include inter alia: • Optimising the school principal’s virtues of responsibility, authenticity and presence as gemeinschaft (community) relationships to ensure effective social justice praxis (§5.2). • Inculcate a disciplined school environment for learners to embrace human diversity and dignity, democracy, and Ubuntu-principles (§5.3) to optimise effective social justice praxis. • Influence education in general - system and structures - to optimise effective social justice praxis (§5.4). • Foster constitutional values and human rights as effective social justice praxis (§5.5). • Establish a social justice culture amongst educational partners who are essential to school development and governance to optimise effective social justice praxis (§5.6). • Convince government and union officials and influence political matters to serve the best interest of the child (§5.7) to ensure social justice praxis. • Actualise management strategies for social justice praxis that epitomise compassion, love, care and human rights in a participative and respectful environment (§5.8). • These management strategies were described as techniques or aims, objectives and action steps to provide answers to the questions where and how, which determined on which level or levels these strategies were to be performed. Main findings: • At a conceptual and a theoretical level: Conceptually and theoretically this study established, for the first time, specific determinants of social justice praxis (Chapters Two and Three) and its management. This contribution is found in the syntheses that followed each conceptual discussion of justice (§2.2.7) and social justice (§2.3.4), as well as the syntheses and evaluation of these determinants (§3.2-§3.4) for social justice praxis. These determinants may be regarded as an attempt at purified, cleansed theorising with respect to social justice praxis. This study found that social justice does exist in the hearts of the principals who took part in this study and that social justice belongs to all learners, to all of humanity, whoever they are or whatever their circumstances may be. Social justice is, essentially, embodied and lived love-in-practice towards all. However, the effectiveness of social justice praxis is usually determined by pragmatic circumstances that dictate the scale and scope of its efficacy. This study found that social justice praxis in schools should deviate from a mere legalistic or juridical notion because it progressed beyond the conceptual boundaries and theoretical limits of juristic thinking towards an attempt at linking social justice praxis to a humanising pedagogy. As a consequence, social justice in this research cuts across all man-made barriers: it has become a prospective notion that reflects its restorative and transformational nature and role. • At a strategic level: Strategically, this research found that the possibility of various cycles of action research in schools as well as in higher education institutions exists. The seven themes could be viewed in isolation, but if regarded, as found in this research, as seven levels that build upon each other and whose strengths or weaknesses are interdependent, it becomes self-evident that social justice forms the basis of cohesive and holistic social justice praxis. The seven strategies (§5.2-§5.8) developed in this research may, in future, inform research and praxis in schools and higher learning institutions in order to confirm or refute the theory presented herewith. • At policy-making level: This study has implications for policy design and management development, not only at basic education level, but also at national level. This study found that social justice specifically, has neither adequately, nor officially been addressed in relevant policies. If policy amendments were to be made and management strategies for social justice praxis in schools become an essential part of national policy, it will have implications at the level of further professional development of school principals, such as the current ACE School Leadership Programme. In addition, teachers’ in-service professional development will have to include these management strategies in the offering of short courses. Furthermore curriculum changes will have to follow to incorporate pre-service or initial training programmes of Higher Education institutions that offer teacher training programmes which may have a snowball effect at provincial and school curricula levels. Another important finding of this research is that, in future, the binding agent amongst schools may yet prove to be social justice and not geo-social and/or socio-economic markers, as is the case at present. In this manner social justice may become a lived curriculum that will permeate the entire education system in South Africa, but more so, will permeate the school culture of every school. Recommendations: A management strategy for effective social justice praxis in schools should be developed at national level but specifically to schools should be tailor-made for each school, because social justice praxis becomes visible in the acts of individual men and women, girls and boys, who regard the other as equally well as the self and therefore the following recommendations are important: • Continuous professional development of principals and teachers. • The right to education and its praxis to ensure the best interest of the child should be incorporated in the Life Orientation curriculum. • Have a collective vision of schools that truly strive, cherish and inculcate a pedagogy of social justice praxis to ensure that education is life-generating, life engendering, causing life or life awakening (onderwys is lewe wek). • Fairness as a moral construct should be visible in institutions where values of fairness, equality and social justice permeate the institution and provide a moral and structural frame for judgements based on the principle of fiduciary trust. • Schools should become community hubs as centrifugal force that embraces views on African culture, Ubuntu principles and Indigenous Knowledge Systems. • Create district-wide power teams that will train teachers in positive conduct as well as assist and provide interventions. • Principals and teachers have to take responsibility and agency for social justice pedagogy. / Thesis (Ph.D. (Education Management))--North-West University, Potchefstroom Campus, 2013

<p>Uvod: Tematika ove doktorske teze, usmerena je na analizu respiratornih poremećaja tokom spavanja, uzimajući u obzir činjenicu da se većina trudnica žali na poremećaje u ovoj sferi. Akcenti na ovom polju, odnose se na identifikaciju ovih patolo&scaron;kih stanja u trudnoći. Zato se ovi poremećaji moraju posmatrati integrisano sa rizičnim trudnoćama, ne samo kao njihovi pratioci, već najverovatnije i uzročnici i bitni činioci.<br />Cilj istraživanja: Cilj nam je bio da ukažemo na neophodnost primene neinvazivne ventilacije kod selektovane grupe trudnica, koja ima poremećeno disanje tokom spavanja, prema praktičnom kliničkom protokolu koji će, nadamo se, proisteći iz ovog istraživanja<br />Metodologija: Istraživanje je sprovedeno u formi prospektivne studije, na Klinici za ginekologiju i aku&scaron;erstvo, Kliničkog centra Vojvodine i u Centru za medicinu sna, Instituta za plućne bolesti Vojvodine, u periodu: od maja 2009. do juna 2011 godine.i obuhvatilo je finalno 110 trudnica. Studija je po tipu bila kohortna i eksperimentalna, po&scaron;to je identifikovala ispitanice na osnovu prisustva određenog faktora (SDB) i uticaj prisustva, odnosno odsustva predložene terapijske intervencije na tok i ishod trudnoće.<br />Rezultati:<br />- Respiratorni poremećaji tokom spavanja (SDB) su većinom tranzitornog karaktera tokom trudnoće, bez razlike između rizičnih trudnoća i onih uobičajenog toka;<br />- SDB tokom rizičnih trudnoća, uop&scaron;teno gledano, negativno utiču na tok i ishod istih;<br />- Primenom neinvazivne ventilacije (NIV), postiže se signifikatno smanjenje dnevne pospanosti (mereno sa ESS) i pobolj&scaron;anje oksigenacije, te redukcija kardiovaskularnih i metaboličkih komplikacija bez statistički značajne razlike sa i bez NIV-a;<br />- Trudnice lečene sa NIV (grupa 1) imaju duže trajanje gestacije u odnosu na nelečene (grupa 2) bez statistički značajne razlike;<br />- Rezultati Apgar-skora takođe su vi&scaron;ih vrednosti kod grupe 1 u odnosu na grupu 2 (bez NIV-a) bez statistički značajne razlike;<br />- Nije zabeležena statistički značajna razlika telesne mase novorođenčadi između grupe 1 i grupe 2, kao ni kod obe grupe u odnosu na kontrolnu (grupu 3);<br />- Pojava hipertenzivnog sindroma u grupama 1 i 2 je bez signifikantne razlike iako je manje trudnica imalo ovaj sindrom u grupi 1;<br />- Prisustvo SDB nije uticalo na način zavr&scaron;etka porođaja u svim ispitivanim grupama, ali su rizične trudnoće če&scaron;će zavr&scaron;avane operativnim putem.<br />Zaključak: Naučna opravdanost disertacije, ogleda se u tome, da se po prvi put, na na&scaron;im prostorima, uvođenjem neinvazivne ventilacije, kod pacijentkinja sa rizičnim trudnoćama, utiče na parametre perinatalnog ishoda i bolje zdravstveno stanje trudnica i njihovih novorođenčadi. Velika ekspanzija naučnog istraživanja u vodećim svetskim centrima o ovoj problematici, a imajući u vidu izražen trend negativnog prirodnog prira&scaron;taja u na&scaron;oj sredini, navela nas je na neophodnost re&scaron;avanja ovog problema na domaćem terenu, kao jednom od prioriteta u naučno-istraživačkom radu i praktičnom medicinskom delovanju.</p> / <p>Background: The theme of this thesis is focused on the analysis of respiratory disorders during sleep, since most pregnant women complain of sleep disturbances. The goal is to identify pathological respiratory disorders in pregnancy, considering them an integral part of high risk pregnancy, being most likely a cause of some of them, not only a side effect.<br />Objective: The aim of the study was to point out the necessity of application of non-invasive ventilation in selected pregnant women who have disrupted breathing during sleep. Based on the results of this research, a clinical protocol is developed.<br />Method: The research was conducted in the form of prospective studies in the Department of Gynecology and Obstetrics, Clinical Center and the Center for sleep medicine, Institute for Pulmonary Diseases of Vojvodina, in the period from May 2009 through June 2011 godine.U covered the final 110 pregnant women. The study by the type of the cohort and experimental, as the respondent identified by the presence of certain factors (SDB) and the effect of the presence or the absence of the proposed therapeutic interventions on the course and outcome of pregnancy.<br />Results:<br />- respiratory disorders during sleep (SDB) are mostly transitory nature during pregnancy, with no difference between risk pregnancies and those ordinary course;<br />- SDB during high-risk pregnancies, in general, negatively affect the course and outcome of the same;<br />- Application of non-invasive ventilation (NIV), achieved statistical significance reduce daytime sleepiness (measured with the ESS) and improve oxygenation and reduce cardiovascular and metabolic complications with no statistically significant differences with and without NIV;<br />- Pregnant women treated with NIV (group 1) have a longer duration of gestation compared to untreated (Group 2) with no statistically significant differences;<br />- Results Apgar-score values were also higher in group 1 compared to group 2 (without NIV) with no statistically significant differences;<br />- Not statistically significant difference in body weight between newborns Group 1 and Group 2, or in both groups compared to the control group (group 3);<br />- The emergence of hypertensive syndrome in groups 1 and 2 is no significant difference although less of pregnant women have this syndrome in group 1;<br />- The presence of SDB did not affect the ending of delivery in all groups, but risk pregnancies often ends with surgically.&nbsp;</p><p>Conclusion: For the first time in the region, non-invasive ventilation in patients with high-risk pregnancies is introduced, which will influence perinatal outcomes and improve health of pregnant women and their newborns. Since there is a negative trend of natural population increase in Serbia, new scientific developments in this field enable better medical care, as one of the priorities of scientific research.</p>

Objectifs: Observer l’évolution de la stomatite prothétique dans le temps quant à la fréquence et la sévérité ainsi que son association avec de potentiels facteurs de risque au cours d’un suivi longitudinal de 2 ans. Matériels et méthodes : Cent trente-cinq patients âgés complètement édentés et en bonne santé ont été sélectionnés pour participer à cette étude et ont été divisés de façon randomisée en deux groupes. Ils ont tous reçu une prothèse dentaire amovible totale conventionnelle au maxillaire supérieur. La moitié d’entre eux a reçu une prothèse totale mandibulaire implanto-portée retenue par deux attachements boule et l’autre moitié une prothèse conventionnelle. Ils ont été suivis sur une période de deux ans. Les données sociodémographiques, d’habitudes de vie, d’hygiène et de satisfaction des prothèses ont été amassées à l’aide de questionnaires. Les patients ont aussi subi un examen oral complet lors duquel une évaluation de la stomatite prothétique, basée sur la classification de Newton, a été effectuée ainsi qu’un prélèvement de la plaque prothétique. Les analyses microbiologiques pertinentes afin de détecter la présence de Candida ont ensuite été effectuées. Des tests Chi-carré de Pearson et McNemar ont été utilisés pour analyser la fréquence de la stomatite, son association avec de possibles facteurs de risque ainsi que son évolution dans le temps. Des rapports de cotes (odds ratio) et leurs intervalles de confiance (95%) ont été effectués afin de déterminer la force d’association entre les facteurs de risque et la stomatite prothétique. Résultats : La prévalence de la stomatite a augmenté entre la première (63,6%) et la deuxième année de suivi (88,7%) avec une incidence de 78,8%. Les patients souffrant d’une stomatite de type 2 ou 3 et qui brossent leur palais ont environ 6 fois plus de chance de voir la sévérité de leur stomatite diminuer [p = 0,04 OR 5,88 CI (1,1-32,2)]. Il n’y a pas d’association statistiquement significative entre la fréquence de la stomatite et les facteurs de risque investigués. La prévalence de la candidose est demeurée stable dans le temps (45,8% et 49,2% à la première et deuxième année de suivi respectivement, p > 0,05). Il n’y a pas d’association entre la présence d’une candidose orale, la stomatite prothétique et les facteurs de risque étudiés. Conclusion : Les résultats de cette étude suggèrent que la stomatite prothétique progresse dans le temps indépendamment de la présence d’une candidose. Le brossage du palais pourrait être une approche simple à conseiller aux patients souffrant d’une stomatite prothétique de type 2 ou 3. / Objectives: To assess the evolution of denture stomatitis in term of frequency and severity and its association with potential risk factors over a two-year period. Methods: One hundred thirty five healthy edentulous elders who were randomly rehabilitated with a maxillary complete denture opposed by a conventional denture or an implant-supported overdenture retained by two ball attachments were followed over two years. Demographic and clinical data concerning oral and general health, smoking, denture status and hygienic habits were obtained from oral examination and standard questionnaires. Denture stomatitis was evaluated according to Newton’s classification. Microbiological analyses consist of detection of Candida species in denture plaque and inoculation in selective growth medium. Pearson Chi-square and McNemar tests were used to analyse the frequency of denture stomatitis, its association with potential risk factors and it’s evolution over time. Odds ratios and their 95% confidence intervals were calculated to determine the strength of association between risk factors and denture stomatitis. Results: The prevalence of denture stomatitis increased between the first (63.6%) and second year follow-up (88.7%) with an incidence rate of 78.8%. Those individuals suffering from type 2 or type 3 denture stomatitis and who brushed their palate had approximately 6 times more chance of observing a decrease in the severity of their condition [p=0.04 OR 5.88 CI (1.1-32.2)]. There was no statistically significant association between the frequency of denture stomatitis and classical risk factors at both follow-ups. The carriage rate of Candida species remained stable over time (45.8% and 49.2% first and second year of follow-up consecutively, p > 0.05). There was no association between the presence of oral candidiosis and denture stomatitis or its potential risk factors. Conclusion: The results of this study suggest that denture stomatitis progresses overtime independent of Candida carriage. Palatal brushing could be a preventive approach to minimise the inflammation in individuals suffering from type 2 or type 3 denture stomatitis.

Subjective Defining of Life Goals of Pupils with Behavioural Disturbances Author: Jan Chaloupka Faculty of Education, Charles University in Prague - Department of Special Education Supervisor: Mgr. Jana Mottlová Based on studying literature on general pedagogy, special pedagogy and psychology as well as on the author's personal experience with working with pupils with behavioural disturbances, the author proposes a hypothesis, according to which the long-term goal seeking efforts of the majority of pupils concerning socialization and education are absent, distorted and ineffective. The objective of this paper is to confirm or refute the validity of the hypothesis as well as to theoretically formulate impulses for practice. The research was performed on a sample of 120 respondents and a contrastive control group of 30 grammar school students. It was effectuated by means of a questionnaire and complemented by interviews, which are not included in full form for space reasons. The research has shown that in a heterogeneous group of respondents, a majority of two thirds is either incapable of life goals definition or the definition is rather inadequate and unrealistic. The author, however, has identified the reasons for this neither in the faulty family or educational background nor in decreased...

OBJETIVO: Avaliar comparativamente os resultados de duas técnicas de cirurgia refrativa de superfície com excimer laser, ceratectomia fotorrefrativa (PRK) e ceratectomia subepitelial borboleta assistida à laser (LASEKb). LOCAL: Hospital de Olhos Sadalla Amin Ghanem, Joinville, Santa Catarina, Brasil. MÉTODOS: Realizou-se um estudo prospectivo, randomizado e duplo-cego envolvendo 102 olhos de 51 pacientes. Cada paciente teve aleatoriamente um dos olhos operado com a técnica do PRK e o outro com LASEKb. Os pacientes foram acompanhados por 1 ano. RESULTADOS: Não houveram diferenças significativas entre os dois grupos na acuidade visual (AV) para longe, sem correção, (P = 0,5593). No 12o mês pós-operatório (PO), 98,04% dos olhos no grupo do PRK e 96,08% no grupo do LASEKb atingiram AV sem correção de 20/20. A previsibilidade, eficácia, segurança e estabilidade não apresentaram diferença estatisticamente significativa entre os grupos. O índice de segurança foi de 1 no PRK e 0,996 no LASEKb. Um olho do grupo do LASEKb perdeu uma linha de visão. A porcentagem de olhos que apresentou EE aos 12 meses na faixa de ±0,50 D foi de 94,1% no grupo do PRK e de 86,3% no grupo do LASEKb (P = 0,1883). Enquanto que na faixa de ±1,0 D foi de 100% no grupo do PRK e 98% no grupo do LASEKb (P = 0,3125). Não houve necessidade de reoperações. O tempo médio de cirurgia na técnica PRK foi de 304,86 + 58,77 segundos (aproximadamente 5 minutos) e na técnica LASEKb de 608,35 + 76,88 segundos (aproximadamente 10 minutos) (P < 0,001). O tempo médio de reepitelização no grupo do PRK foi de 4,35 ± 0,48 dias (variação, 4 a 5 dias) e no grupo do BLASEK foi de 4,75 ± 0,72 dias (variação, 4 a 6 dias) (P < 0,002). Os níveis de dor e o desconforto ocular PO não foram estatisticamente diferentes entre os grupos, entretanto houve uma tendência para menor dor no PRK (3,31 ± 4,09 vs 4,43 ± 4,27; P = 0,18). Houve uma redução estatisticamente significativa nos valores do teste de Schirmer em todas as avaliação PO, tanto no PRK (23,6 ± 8,1 vs 19,4 ± 10,1; P < 0,002) quanto no LASEKb (22,4 ± 8,7 vs 18,9 ± 9,7; P = 0,01), entretanto não houve diferença entre os grupos. A opacificação corneana (OC) PO foi pequena nos dois grupos. Somente no 1o mês foi observado diferença estatística entre os grupos, com maior intensidade da OC no grupo do LASEKb (0,18 ± 0,3881) quando comparado ao PRK (0,08 ± 0,2109) (P = 0,039936). A maior intensidade foi observada no 3o mês, com redução gradativa até o 12o mês. CONCLUSÃO: Dentro das condições deste estudo, conclui-se que o PRK e o LASEKb mostraram resultados semelhantes, exceto que o PRK apresentou menor tempo cirúrgico, reepitelização corneana mais rápida e menor OC no 30o PO. / PURPOSE: Comparatively evaluate the results of two techniques of surface excimer laser refractive surgery, photorefractive keratectomy (PRK) and butterfly laser-assisted subepithelial keratectomy (BLASEK). SETTING: Sadalla Amin Ghanem Eye Hospital, Joinville, Santa Catarina, Brazil. METHODS: This is a prospective, randomized and double-masked study including 102 eyes from 51 patients. Each patient was randomized to have one eye operated on with PRK and the other with BLASEK. Patients were followed for 1 year. RESULTS: There were no significant differences between the groups regarding uncorrected distant visual acuity (VA) (p= 0.5593). On the 12th post-operative (PO) month, 98.04% of the eyes in the PRK group and 96.08% in the BLASEK group reached uncorrected VA of 20/20. The predictability, efficacy, safety and stability did not present statically significant difference between groups. The safety index was of 1 for PRK and 0.996 for BLASEK. One eye of the BLASEK group lost one line on the 12th PO month. The percentage of the eyes that presented spherical equivalent at 12 months in the range of ±0.50 D was 94.1% in the PRK group and 86.3% in the BLASEK group (p = 0.1883). While in the range of ±1.0 D it was 100% in the PRK group and 98% in the BLASEK group (p = 0.3125). There were no retreatments. The mean surgical time was 304.86 + 58.77 seconds (approximately 5 minutes) in PRK and 608.35 + 76.88 seconds in BLASEK (approximately 10 minutes) (P < 0,001). The mean reepithelization time in the PRK group was 4.35 ± 0.48 days (range, 4 to 5 days), and in the BLASEK group was 4.75 ± 0.72 days (range, 4 to 6 days) (P < 0.002). Pain scores and ocular discomfort were not statistically different between groups, although there was a trend towards a lower pain level with PRK (3.31 ± 4.09 vs. 4.43 ± 4.27; P = 0.18). Schirmer test values were significantly reduced from preoperative levels through 12 months with both PRK (23.6 ± 8.1 vs. 19.4 ± 10.1; P < 0.002) and BLASEK (22.4 ± 8.7 vs. 18.9 ± 9.7; P = 0.01), however there was no difference between groups in any time point. Haze incidence was slight in both groups. Only in the 1st PO month statistical difference between the groups was observed, with higher intensity in the BLASEK group (0.18 ± 0.3881) when compared to the PRK (0.08 ± 0.2109) (p = 0.039936). The highest intensity was observed on the 3rd month, with gradual reduction until the 12th month. CONCLUSION: In the conditions of this study, it can be concluded that PRK and BLASEK showed similar results, except that PRK presented shorter surgical time, faster corneal reepithelization and less haze at 30th PO days.

INTRODUÇÃO: O câncer de próstata (CaP) é o tipo mais comum entre os tumores malignos que afetam o homem. Dentre as opções terapêuticas para o tratamento precoce do CaP, destaca-se o tratamento cirúrgico com resultados satisfatórios de até 94% de cura nos casos localizados. A ressecção cirúrgica do CaP pode ser feita por três abordagens principais: prostatectomia radical retropúbica (PRR), prostatectomia radical laparoscópica (PRL) e mais recentemente a prostatectomia radical laparoscópica robô assistida (PRAR). Uma vez que existem várias alternativas terapêuticas para esse tipo de câncer, a qualidade de vida e satisfação relacionadas à avaliação, tornam-se muito importantes nos diferentes tipos de técnicas cirúrgicas. OBJETIVO: Comparar a qualidade de vida e o índice de satisfação nos pacientes submetidos a PRR e PRAR através de um estudo prospectivo e aleatorizado. MATERIAL E MÉTODOS: Através do Sistema Único de Saúde (SUS), 200 pacientes com diagnóstico de adenocarcinoma de próstata localizado, foram selecionados de forma aleatória para participarem do estudo, sendo então encaminhados entre março de 2010 a janeiro de 2011 para o Hospital Alemão Oswaldo Cruz (HAOC) para realizar PRAR, ou para o Instituto do Câncer do Estado de São Paulo (ICESP), para a realização de PRR. Todos os pacientes foram seguidos clinicamente de maneira padrão. Utilizamos questionário SF-36 da seguinte forma: no pré-operatório e no pós-operatório de 1, 3, 6, 12, 18 e 24 meses, além de outro elaborado para avaliar a satisfação dos pacientes no pós operatório de 6, 12 e 18 meses. Os dados obtidos foram avaliados estatisticamente com nível de significância de 5%. RESULTADOS: Foram então aplicados os questionários em 200 pacientes submetidos às cirurgias (grupos homogêneos com 100 pacientes para PRR e 100 para PRAR). De acordo com os domínios de qualidade de vida, os escores médios dos aspectos físicos, aspectos emocionais e saúde mental só variaram estatisticamente entre os momentos de avaliação, sendo os grupos iguais entre si para estes domínios. De acordo com aspectos sociais houve diferença entre os grupos independente do momento de avaliação, sendo maior nos pacientes submetidos a cirurgia aberta (p = 0,016). O nível de escolaridade e a renda familiar dos pacientes que realizaram a cirurgia robótica são maiores que as dos pacientes que realizaram a cirurgia aberta (p = 0,044 e p = 0,029 respectivamente). De acordo com o grau de satisfação pós cirurgia, encontramos que os pacientes que fizeram cirurgia robótica apresentam um maior grau de satisfação com a cirurgia que aqueles submetidos a cirurgia aberta (p < 0,001). O que mais incomoda ou preocupa o paciente que realiza a cirurgia aberta é a disfunção erétil enquanto que nos pacientes que fazem à cirurgia robótica a preocupação se distribui entre cura, impotência e perda urinária. CONCLUSÃO: Demonstramos que a maioria dos aspectos de qualidade de vida são semelhantes entre os pacientes submetidos a PRR e PRAR com exceção dos aspectos sociais que foram maiores nos pacientes submetidos ao procedimento aberto, demonstramos ainda que o índice de satisfação dos pacientes é maior no procedimento robótico, entretanto a grande maioria dos pacientes realizariam o mesmo tratamento quando questionados / INTRODUCTION: Prostate cancer (PCa) is the most common malignant tumors that affect man. Among the treatment options for early treatment of PCa, stands out the surgical treatment with satisfactory results, achieving cure results of up to 94% in localized cases. Surgical resection of PCa can be done through three main approaches, which are radical retropubic prostatectomy (RRP), laparoscopic radical prostatectomy (LRP) and more recently robotic-assisted laparoscopic radical prostatectomy (RALRP). Since there are several alternative therapies for this cancer, quality of life and satisfaction related to the evaluation of different types of surgery became very important. OBJECTIVE: Evaluate the two most widely used techniques: RRP and RALRP through a prospective randomized study, checking the satisfaction and quality of life in patients who have undergone these treatments. MATERIAL AND METHODS: The choice of surgical approach of the patient occurred randomly and the patients were selected through the Unified Health System (SUS) and sent to the Oswaldo Cruz Hospital (HAOC) for RALRP (robotic-assisted laparoscopic radical prostatectomy) or sent to the Cancer Institute of the State of São Paulo (ICESP) for RRP (radical retropubic prostatectomy), between March 2010 and January 2011. All patients were followed clinically in a standard way through a questionnaire, SF-36 and a questionnaire to evaluate their satisfaction. It was also verified the level of regret in post-surgery within 1, 3, 6, 12 and 24 months and the level of satisfaction was verified at 6 12 and 18 months post-surgery. The data were statistically evaluated with a significance level of 5%. RESULTS: We then applied the questionnaires in 200 patients who underwent surgery, and 100 patients who underwent RRP and 100 patients who underwent RALRP. The groups were quite homogeneous. According to the domains of quality of life, the average scores of physical, emotional and mental health only varied significantly among time points of evaluation, and the groups were equal to each other for these domains. According to the social aspects there were differences between the groups regardless of the time of evaluation, being higher in patients who underwent open surgery (p = 0.016). The education level and family income of patients who underwent robotic surgery are higher than of patients who underwent open surgery (p = 0.044 and p = 0.029 respectively). According to the level of satisfaction post-surgery, we realized that robotic surgery patients have a higher level of satisfaction about the surgery than those undergone open surgery (p < 0.001). The most signicant thing that bothers or worries the open surgery patients is sexual impotence while in robotic surgery patients, the concern is distributed among cure, impotence and urinary incontinence. CONCLUSION: We demonstrated that most aspects of quality of life are similar among patients undergoing RRP and RALRP except social aspects that were higher in patients undergone open surgery. We further demonstrated that the rate of satisfaction is higher in the robotic procedure patients. However, when questioned, the vast majority of patients would do the same treatment

O diagnóstico precoce dos Segundos Tumores Primários (STP) em pacientes já tratados por um carcinoma de cabeça e pescoço deve ser realizado, pois possibilita um tratamento resolutivo com baixa morbidade. O objetivo deste trabalho é avaliar se a cromoscopia com Lugol permite uma melhora na identificação de lesões malignas ou pré malignas em fases iniciais na boca e orofaringe, bem como se a imunoexpressão do p53 e da Metalotioneína no tumor índice predizem o aparecimento de um STP. Foi realizado um estudo prospectivo onde dois grupos comparáveis de portadores de carcinoma epidermóide de cabeça e pescoço foram formados (um com 106 pacientes e outro com 105 pacientes). Foram acompanhados durante um período médio de 25 meses aproximadamente. No primeiro grupo (grupo A) não foram utilizados corantes, já no segundo (grupo B) utilizou-se o Lugol. Foi observado um número de diagnósticos 200% maior no grupo em que foi utilizada a coloração de Lugol (grupo B) em relação ao grupo A. A imunoexpressão aumentada do p53 no tumor índice foi estatisticamente significante quando o paciente desenvolveu um segundo tumor primário diagnosticado pelo Lugol, não visível sem o corante, o que não ocorreu com a metalotioneína. / The early diagnosis of seconds primary tumors (STP) in patients already treated for carcinoma of the head and neck should be done, because enables a resolutive treatment with low morbidity. The objective of this paper is to evaluate whether chromoscopia using Lugols solution allows an improvement in the identification of malignant or pre malignant lesions in early stages in the mouth and oropharynx, and whether the expression of P53 and metallothionein in tumor index predict the emergence of a STP. A prospective study was conducted, where two groups statistically similar of patients with head and neck squamous cell carcinoma (one with 106 patients and another with 105 patients) were followed-up for a median period of 25 months, approximately. In the first group dyes were not used, and in the second Lugols solution was employed. It was observed a number of diagnoses 100%i higher in the group that Lugols solution was used. The increasing of P53 expression in tumor index was statistically significant when the patient developed a second primary tumor diagnosed by Lugol, not visible without dye, which has not occurred with metallothionein.

Introdução: Pacientes com doença renal crônica (DRC) têm maior probabilidade de desenvolver complicações no pós-operatório. O efeito da N-acetilcisteína (NAC) na prevenção da lesão renal aguda (LRA) associada à cirurgia cardíaca é controvertido. As principais causas desta controvérsia residem na não uniformidade dos critérios para definir a LRA e nas doses da NAC empregadas. Objetivos: O objetivo primário foi avaliar o efeito renoprotetor da NAC em pacientes com DRC durante as primeiras 72 horas depois de cirurgia de revascularização miocárdica eletiva, recorrendo à classificação AKIN, um critério de diagnóstico internacionalmente validado, para definir a LRA e utilizando doses de máximas de NAC sancionadas para uso clínico. Os objetivos secundários foram verificar o impacto do tratamento sobre o estresse oxidativo, morbimortalidade, necessidade de diálise durante a internação e sobre outros marcadores envolvidos na fisiopatologia da LRA. Métodos: estudo prospectivo e duplo-cego em 70 pacientes com DRC estágios 3 e 4 submetidos à revascularização miocárdica cirúrgica eletiva aleatorizados para receber NAC 150 mg/kg IV (dose de ataque) iniciada 2 h antes da cirurgia, seguida por 50 mg/kg IV em 6 horas (grupo NAC) ou solução de NaCl 0,9% IV (grupo Controle). Resultados: A incidência da LRA foi reduzida no grupo NAC (57,1% versus 28,6%, p=0,016). O não uso da NAC (RR= 5,98 IC 95% -2,86 A -0,28, P= 0,015) e a circulação extracorpórea (CEC) (RR= 6,39, IC 95% -2,98 a -0,34, p= 0,012) foram preditores independentes da LRA. Em pacientes tratados com CEC a NAC reduziu o risco de LRA de 63% para 46%. Nos Controles o estresse oxidativo foi elevado (p= 0,01) nas 72 h de pós-operatório. No grupo NAC esta resposta foi abolida. Outros marcadores da LRA foram também mais elevados nos Controles: Cistatina C (p< 0,001) e Neutrophil Gelatinase Associated Lipocalin , NGAL (p= 0,002). Os níveis de proteína C reativa e a incidência da morbimortalidade foram semelhantes entre os grupos. Nenhum paciente necessitou de diálise. Conclusões: A NAC, empregada em doses máximas, reduz a incidência de LRA em pacientes com DRC submetidos à cirurgia de revascularização miocárdica, abole a resposta do estresse oxidativo associado à ocorrência da LRA e reduz o impacto negativo da CEC na função renal / Introduction: Post-operative complications are frequent among patients with chronic kidney disease (CKD). The renoprotective effect of N-acetylcysteine (NAC) in patient undergoing myocardial revascularization is controversial, mainly because of differences in the doses of NAC administered and to different criteria to define acute kidney injury (AKI). Objectives: The primary objective was to evaluate the renoprotective effect of NAC in patients with CKD, stages 3 or 4, undergoing elective coronary artery bypass graft (CABG), with or without cardiopulmonary bypass (CPB), during the first 72 h post-operative. We used a validated criterion to define AKI (AKIN classification) and a maximum IV dose of NAC sanctioned for clinical use. The secondary objectives were to assess the effect of NAC on oxidative stress and other surrogate markers of renal lesion (C Cystatin and Neutrophil Gelatinase Associated Lipocalin, NGAL) and on morbimortality and the need of post-operative dialysis during hospitalization. Methods: this was a prospective double-blind study in 70 stages 3 or 4 CKD patients undergoing CABG randomized to receive either NAC 150 mg/kg IV (induction) started 2 h before surgery, followed by 20 mg/kg IV for 6 h (group NAC) or 0.9 saline IV (group Control). Results: The incidence of AKI was reduced in the group NAC (57.1% versus 28.6%, p=0.016). Non use of NAC (RR= 5.98 95% IC -2.86 to -0.28, p= 0.015) e CPB (RR= 6.39, 95% IC -2.98 to -0.34, p= 0.012) were independent predictors of AKI. NAC also reduced the incidence of AKI from 63% to 46% in patients treated with CPB. Oxidative stress was increased in the Control group (p= 0.01) while it was abolished in patients receiving NAC. Circulating C Cystatin (p< 0.001) and NGAL (p= 0.002) were also reduced by NAC. C-reactive protein and the incidence of death and cardiovascular events were not influenced by NAC. No patient needed dialysis during hospitalization. Conclusions: Maximum IV doses of NAC reduces the incidence of AKI in patients with pre-existing CKD undergoing elective CABG, abolishes oxidative stress and mitigate the negative effect of CPB on renal function