There are several types of disorders that affect our colon’s ability to function properly such as colorectal cancer, ulcerative colitis, diverticulitis, irritable bowel syndrome and colonic polyps. Automatic detection of these diseases would inform the endoscopist of possible sub-optimal inspection during the colonoscopy procedure as well as save time during post-procedure evaluation. But existing systems only detects few of those disorders like colonic polyps. In this dissertation, we address the automatic detection of another important disorder called ulcerative colitis. We propose a novel texture feature extraction technique to detect the severity of ulcerative colitis in block, image, and video levels. We also enhance the current informative frame filtering methods by detecting water and bubble frames using our proposed technique. Our feature extraction algorithm based on accumulation of pixel value difference provides better accuracy at faster speed than the existing methods making it highly suitable for real-time systems. We also propose a hybrid approach in which our feature method is combined with existing feature method(s) to provide even better accuracy. We extend the block and image level detection method to video level severity score calculation and shot segmentation. Also, the proposed novel feature extraction method can detect water and bubble frames in colonoscopy videos with very high accuracy in significantly less processing time even when clustering is used to reduce the training size by 10 times.

published_or_final_version / Business Administration / Master / Master of Business Administration

Background: Delivery room management (DR) of the newly born infant should be performed according to international guidelines, but no recommendations are available for an infant’s position immediately after birth. The present study was performed to answer the following questions: 1. How often is DR-management performed in term infants in side position? 2. Is routine DR-management possible in side position? 3. Is there any benefit of side position with respect to agitation or vital parameters? Methods: Cross-sectional study of video-recorded DR-management in term newborns delivered by C-section in 2012. Videos were analysed for infant’s position, administered interventions, vital parameters and agitation. Results: 187 videos were analysed. The Main Position (defined as position spent more than 70% of the time) was “supine” in 91, “side” in 63 and “not determinable” in 33 infants. “Supine” infants received significantly (p < 0.001) more often stimulation (12.5% of the total time) than “side” infants (3.9% of time). There were no differences between both groups with regard to suctioning; CPAP was exclusively (98%) administered in supine position. Newborns on side were less agitated than those on supine. There was a trend towards a better oxygenation in “side” positioned infants (p = 0.055) and significantly (p = 0.04) higher saturation values in “left-sided” infants than “right-sided” infants at 8th minute. “Side” positioned infants reached oxygen saturation values >90% earlier than “supine” positioned infants (p = 0.16). Conclusions: DR-management is feasible in the side position in term infants. Side position seems to be associated with reduced agitation and improved oxygenation. However, it remains unclear whether this represents a causal relationship or an association. The study supports the need for a randomized controlled trial.

Through this research, engineering students and conservation biologists constructed an off-grid video system for observing western burrowing owls in El Paso, Texas. The burrowing owl has a declining population and their range decreasing, driving scientists' interest to see inside the den for observing critical nesting behavior. Texas Parks and Wildlife Department (TPWD) biologists wanted videos from inside the dark, isolated hillside owl burrows. This research yielded a replicable multi-camera prototype, empowering others to explore applications of engineering and wildlife monitoring. The remote station used an off-the-shelf video recording system, solar panels, charge controller, and lead acid batteries. Four local K-12 science educators participated in system testing at Lake Ray Roberts State Park through the Research Experiences for Teachers (RET, NSF #1132585) program, as well as four undergraduate engineering students as senior design research.

INTRODUÇÃO: As crises não-epilépticas psicogênicas são uma condição médica complexa que pode se apresentar como sintomas físicos ou neurológicos porém sem achados orgânicos correspondentes, evidenciando a presença de fatores psicológicos como base dos sintomas. Elas podem ocorrer isoladamente ou se repetir de forma sistemática. Quando se repetem podem estar associadas à baixa auto-estima, perda de emprego, dificuldade nas relações amorosas e sociais. A esta condição clínica denomina-se transtorno de crises não-epilépticas psicogênicas (TCNEP). Dentre os fatores de risco para TCNEP, os mais amplamente estudados são a história de trauma e os fenômenos dissociativos. MÉTODOS: Neste estudo caso-controle, cujos dados foram obtidos entre janeiro de 2003 e setembro de 2009, foram avaliados 20 pacientes portadores de TCNEP e 20 pacientes com epilepsia do lobo t e m p o r a l , a p ó s m o n i t o r a ç ã o p r o l o n g a d a em u n i d a d e d e vídeo-eletroencefalografia (VEEG). Foram excluídos os sujeitos com associação das duas patologias. Os grupos foram pareados quanto ao gênero, faixa etária, anos de escolaridade formal e classe social. Também foram avaliados: idade de início das crises, idade do diagnóstico, pior frequência de crises e classificação social. Os pacientes responderam também a dois instrumentos estruturados e validados no Brasil, um quanto à história de trauma na infância e adolescência (QUESI), e outro sobre a presença de fenômenos dissociativos (DES) ao longo da vida. RESULTADOS: 1) Não houve diferença significativa do ponto de vista estatístico no que diz respeito ao gênero, faixa etária, classificação social, e frequência de crises; 2) Houve diferença estatisticamente significativa na escolaridade (p=0,006); 3) No grupo caso, a idade de início foi superior (22,25 DP 9,19) à do grupo controle (11,62 DP 9,59), p=0,007. Assim como a idade do diagnóstico, que foi de 30,79 (DP 11,33) no grupo de pacientes com TCNEP e de 15,97 (DP 9,67) nos pacientes com epilepsia, p<0,001; 4) A DES teve valores também estatisticamente significativos, sendo 53,35 (DP 23,15) no grupo com TCNEP e de 22,02 (DP 16,37) no grupo com epilepsia, p<0,001. Quanto às subescalas, todas tiveram resultados significativos entre os grupos; 5) O QUESI apresentou também resultados médios significativos, com média de 60,30 (DP 21,75) no grupo de TCNEP e de 45,40 (DP 12,27) no grupo com epilepsia, p=0,014, mas somente as subescalas que identificaram a negligência e o abuso emocionais foram estatisticamente significativas (p=0,013 e p=0,014 respectivamente). CONCLUSÕES: Fenômenos dissociativos e história de trauma na infância são mais frequentes nos pacientes com TCNEP do que nos pacientes com epilepsia. Todavia, em relação à história de trauma, apenas a negligência e o abuso emocionais podem estar associados à TCNEP / INTRODUCTION: Psychogenic non-epileptic seizures are a complex medical condition that may present as physical or neurologic symptoms but without corresponding organic findings, suggesting the presence of psychological factors as the basis of symptoms. They can occur alone or recur systematically. When recurrent they can be associated with low self-esteem, loss of employment, difficulty in intimate and other social relationships. This clinical condition is called a psychogenic non-epileptic seizures disorder (PNESD). Among the risk factors for PNESD, the most widely studied are the history of trauma and the presence of dissociative phenomena. METHODS: In this case-control study, with data obtained between January 2003 and September 2009, 20 patients with PNESD and 20 patients with temporal lobe epilepsy were evaluated after monitoring in video-electroencephalography unit. We excluded subjects with a combination of both conditions. The groups were matched for gender, age, length of school education and social class. We also evaluated age of onset, age at diagnosis and worse seizure frequency. Patientes of both groups responded two structured instruments for history of trauma in childhood and adolescence (QUESI) and FOR the presence of dissociative phenomena (DES) throughout life, both valitaded in Brazil. RESULTS: 1) There was no statistical significant difference between both groups regard to gender, age, social status and seizure frequency; 2) There was a statistical significant difference in education (p = 0.006); 3) Age of onset and at diagnosis in PNESD group were significantly higher (22.25 SD 9, 19) than the control group (11.62 SD 9.59), p = 0.007, as well as age of diagnosis were higher in patients with PNESD (30.79 SD 11.33) than in patients with epilepsy (15.97 SD 9.67), p <0.001; 4) DES values were also significantly higher in the PNESD group (53.35 SD 23.15) than control group (22.02 SD 16.37), p <0.001. As for the subscales all had significant results between groups; 5) QUESI\'s results were also significantly higher in the PNESD group (60.30 SD 21.75) than in epilepsy group (45.40 SD 12.27), p = 0.014, but only the subscales that identify emotional neglect and emotional abuse were statistical significantly in PNESD group (p = 0.013 and p =0.014 respectively). CONCLUSIONS: History of childhood trauma and dissociative phenomena are more common in patients with PNESD than in patients with epilepsy. However, in relation to history of trauma, only emotional neglect and emotional abuse may be associated with PNESD.

Diversos autores referem que a realização da consulta médica associa-se a melhores resultados quando apoiada nos pressupostos do modelo centrado no paciente dentre os quais se destaca a inclusão da perspectiva do paciente. O objetivo deste estudo foi analisar se o modelo de ensino adotado no Ambulatorial Geral de Pediatria (AGEP) permite ao residente de pediatria, após um ano de estágio, conduzir uma consulta com a inclusão da perspectiva dos pais. O estágio no AGEP dos residentes de primeiro ano, do Departamento de Pediatria da Faculdade de Medicina da Universidade de São Paulo (USP), ocorre no Hospital Universitário da USP que é um serviço de atendimento secundário. Este ambulatório tem como objetivo ensinar uma forma de atendimento ampliado e não centrado na doença. Em 2007, foram selecionados 10 residentes para serem filmados durante a realização de uma consulta no início e no final do estágio. Os dados foram analisados por metodologia qualitativa por meio de técnica exploratória envolvendo, independentemente, três juízes. Adotando-se como referencial teórico pressupostos do modelo centrado no paciente, elaboraram-se as categorias gerais: (1) Compreensão da queixa principal referida pelos pais; (2) Compreensão de outras queixas; (3) Compartilhamento das orientações e decisões. Os residentes tinham em média 26 anos de idade, graduados em diversas faculdades do país e referiam formação em atendimento ambulatorial de pequena duração. Como resultado, observou-se que na categoria (1) a maioria dos residentes explora precocemente a primeira queixa referida pelos pais. No final do estágio alguns residentes incluem na anamnese, de modo insuficiente, a exploração dos sentimentos envolvidos com a queixa. Na categoria (2), poucos residentes exploram ativamente outras preocupações e observou-se pouca valorização da agenda dos pais. Na categoria (3), os residentes mantiveram ao longo do curso a forma não compartilhada das orientações e decisões durante a consulta. A observação das consultas permitiu a elaboração de categorias empíricas: (a) interação com a criança; (b) explicação do roteiro de anamnese; (c) prontuário como principal fonte de informação; (d) momentos de silêncio na consulta; (e) explicações a respeito dos procedimentos do exame físico. Dentre elas, a interação com a criança foi a mais significativa e constatou-se que a maioria dos residentes estabelece pouca comunicação com as crianças. Os residentes que buscam um diálogo com a criança restringem-se aos aspectos da rotina de vida e atividades escolares. Apenas uma residente explora o problema de saúde diretamente com a criança. Chamou a atenção a procura ativa da criança pela comunicação com os residentes durante a consulta, porém a maioria deles não demonstra ter entendido esse comportamento. Concluiu-se que o modelo de ensino do AGEP em 2007 não capacitava os residentes para a realização de consultas com a inclusão da perspectiva dos pais. As explicações para esse fato podem relacionar-se com as dificuldades em mudanças de comportamento, por parte dos residentes, decorrentes da formação na graduação com predomínio do modelo biomédico e a ausência de estratégias específicas para o ensino de pressupostos do modelo centrado no paciente e das habilidades de comunicação durante o estágio no AGEP / Several authors report that the outcome of the medical consultation is associated with better results when based on patient-centered model among which stands out the inclusion of the patient\'s perspective. The aim of this study was to examine whether the teaching model adopted in the Ambulatório Geral de Pediatria (AGEP), a general Pediatric outpatient clinic, capacitates, after one year, the resident of pediatrics to conduct a consultation which includes the parents perspective. The AGEP is a secondary health care facility located at the University Hospital of the University of São Paulo (USP), Brazil, and offers a course for the first year of the residency program of the Department of Pediatrics of the School of Medicine of USP. This clinic aims to teach a form of extended care, not focused on the disease. In 2007, 10 residents were selected to be videotaped while performing a consultation at the beginning and at the end of the course. The data was analyzed through qualitative methodology by exploratory technique involving three judges independently. Using as reference the patient-centered care, general categories were elaborated: (1) Understanding of the parents main complaints, (2) Understanding of other complaints and (3) Sharing decision-making. The residents had an average age of 26 years-old, graduated from different colleges in the country and referred outpatient training only for short periods. As a result it was observed that in category (1), the majority of residents explore precipitously the first parents complaint. At the end of the course some residents, although insufficiently, include in the anamneses the parents concerns involved with the complaint. In Category (2), few residents actively explore other complaints and the parents agenda was neglected. In category (3), residents maintained throughout the course a non-shared decision-making practice. The observation of consultations enabled the development of empirical categories: (a) interaction with the child, (b) explanation of the anamnese guide, (c) use of the records as the main source of information, (d) moments of silence during the consultation, (e) lack of explanation of the procedures of the physical examination. Among which, the interaction with the child was the most significant and it was found that most residents establish little communication with the children. Residents seeking a dialogue with the child are limited to the routine aspects of life and school activities. Only one resident explores the health problem directly with the child. Children actively tried to communicate with the residents during the consultation, but most residents appeared not to have understood their behavior. It was concluded that the teaching model of AGEP in 2007 does not enabled residents to do consultations including the parents perspective. The explanations for this may relate to the difficulties in changing residents behavior due to their former training during medical school in which there is a predominance of the biomedical model. Another reason was the absence of specific strategies for teaching patient-centered care and communication skills during the course in AGEP

Diversos autores referem que a realização da consulta médica associa-se a melhores resultados quando apoiada nos pressupostos do modelo centrado no paciente dentre os quais se destaca a inclusão da perspectiva do paciente. O objetivo deste estudo foi analisar se o modelo de ensino adotado no Ambulatorial Geral de Pediatria (AGEP) permite ao residente de pediatria, após um ano de estágio, conduzir uma consulta com a inclusão da perspectiva dos pais. O estágio no AGEP dos residentes de primeiro ano, do Departamento de Pediatria da Faculdade de Medicina da Universidade de São Paulo (USP), ocorre no Hospital Universitário da USP que é um serviço de atendimento secundário. Este ambulatório tem como objetivo ensinar uma forma de atendimento ampliado e não centrado na doença. Em 2007, foram selecionados 10 residentes para serem filmados durante a realização de uma consulta no início e no final do estágio. Os dados foram analisados por metodologia qualitativa por meio de técnica exploratória envolvendo, independentemente, três juízes. Adotando-se como referencial teórico pressupostos do modelo centrado no paciente, elaboraram-se as categorias gerais: (1) Compreensão da queixa principal referida pelos pais; (2) Compreensão de outras queixas; (3) Compartilhamento das orientações e decisões. Os residentes tinham em média 26 anos de idade, graduados em diversas faculdades do país e referiam formação em atendimento ambulatorial de pequena duração. Como resultado, observou-se que na categoria (1) a maioria dos residentes explora precocemente a primeira queixa referida pelos pais. No final do estágio alguns residentes incluem na anamnese, de modo insuficiente, a exploração dos sentimentos envolvidos com a queixa. Na categoria (2), poucos residentes exploram ativamente outras preocupações e observou-se pouca valorização da agenda dos pais. Na categoria (3), os residentes mantiveram ao longo do curso a forma não compartilhada das orientações e decisões durante a consulta. A observação das consultas permitiu a elaboração de categorias empíricas: (a) interação com a criança; (b) explicação do roteiro de anamnese; (c) prontuário como principal fonte de informação; (d) momentos de silêncio na consulta; (e) explicações a respeito dos procedimentos do exame físico. Dentre elas, a interação com a criança foi a mais significativa e constatou-se que a maioria dos residentes estabelece pouca comunicação com as crianças. Os residentes que buscam um diálogo com a criança restringem-se aos aspectos da rotina de vida e atividades escolares. Apenas uma residente explora o problema de saúde diretamente com a criança. Chamou a atenção a procura ativa da criança pela comunicação com os residentes durante a consulta, porém a maioria deles não demonstra ter entendido esse comportamento. Concluiu-se que o modelo de ensino do AGEP em 2007 não capacitava os residentes para a realização de consultas com a inclusão da perspectiva dos pais. As explicações para esse fato podem relacionar-se com as dificuldades em mudanças de comportamento, por parte dos residentes, decorrentes da formação na graduação com predomínio do modelo biomédico e a ausência de estratégias específicas para o ensino de pressupostos do modelo centrado no paciente e das habilidades de comunicação durante o estágio no AGEP / Several authors report that the outcome of the medical consultation is associated with better results when based on patient-centered model among which stands out the inclusion of the patient\'s perspective. The aim of this study was to examine whether the teaching model adopted in the Ambulatório Geral de Pediatria (AGEP), a general Pediatric outpatient clinic, capacitates, after one year, the resident of pediatrics to conduct a consultation which includes the parents perspective. The AGEP is a secondary health care facility located at the University Hospital of the University of São Paulo (USP), Brazil, and offers a course for the first year of the residency program of the Department of Pediatrics of the School of Medicine of USP. This clinic aims to teach a form of extended care, not focused on the disease. In 2007, 10 residents were selected to be videotaped while performing a consultation at the beginning and at the end of the course. The data was analyzed through qualitative methodology by exploratory technique involving three judges independently. Using as reference the patient-centered care, general categories were elaborated: (1) Understanding of the parents main complaints, (2) Understanding of other complaints and (3) Sharing decision-making. The residents had an average age of 26 years-old, graduated from different colleges in the country and referred outpatient training only for short periods. As a result it was observed that in category (1), the majority of residents explore precipitously the first parents complaint. At the end of the course some residents, although insufficiently, include in the anamneses the parents concerns involved with the complaint. In Category (2), few residents actively explore other complaints and the parents agenda was neglected. In category (3), residents maintained throughout the course a non-shared decision-making practice. The observation of consultations enabled the development of empirical categories: (a) interaction with the child, (b) explanation of the anamnese guide, (c) use of the records as the main source of information, (d) moments of silence during the consultation, (e) lack of explanation of the procedures of the physical examination. Among which, the interaction with the child was the most significant and it was found that most residents establish little communication with the children. Residents seeking a dialogue with the child are limited to the routine aspects of life and school activities. Only one resident explores the health problem directly with the child. Children actively tried to communicate with the residents during the consultation, but most residents appeared not to have understood their behavior. It was concluded that the teaching model of AGEP in 2007 does not enabled residents to do consultations including the parents perspective. The explanations for this may relate to the difficulties in changing residents behavior due to their former training during medical school in which there is a predominance of the biomedical model. Another reason was the absence of specific strategies for teaching patient-centered care and communication skills during the course in AGEP

INTRODUÇÃO: As crises não-epilépticas psicogênicas são uma condição médica complexa que pode se apresentar como sintomas físicos ou neurológicos porém sem achados orgânicos correspondentes, evidenciando a presença de fatores psicológicos como base dos sintomas. Elas podem ocorrer isoladamente ou se repetir de forma sistemática. Quando se repetem podem estar associadas à baixa auto-estima, perda de emprego, dificuldade nas relações amorosas e sociais. A esta condição clínica denomina-se transtorno de crises não-epilépticas psicogênicas (TCNEP). Dentre os fatores de risco para TCNEP, os mais amplamente estudados são a história de trauma e os fenômenos dissociativos. MÉTODOS: Neste estudo caso-controle, cujos dados foram obtidos entre janeiro de 2003 e setembro de 2009, foram avaliados 20 pacientes portadores de TCNEP e 20 pacientes com epilepsia do lobo t e m p o r a l , a p ó s m o n i t o r a ç ã o p r o l o n g a d a em u n i d a d e d e vídeo-eletroencefalografia (VEEG). Foram excluídos os sujeitos com associação das duas patologias. Os grupos foram pareados quanto ao gênero, faixa etária, anos de escolaridade formal e classe social. Também foram avaliados: idade de início das crises, idade do diagnóstico, pior frequência de crises e classificação social. Os pacientes responderam também a dois instrumentos estruturados e validados no Brasil, um quanto à história de trauma na infância e adolescência (QUESI), e outro sobre a presença de fenômenos dissociativos (DES) ao longo da vida. RESULTADOS: 1) Não houve diferença significativa do ponto de vista estatístico no que diz respeito ao gênero, faixa etária, classificação social, e frequência de crises; 2) Houve diferença estatisticamente significativa na escolaridade (p=0,006); 3) No grupo caso, a idade de início foi superior (22,25 DP 9,19) à do grupo controle (11,62 DP 9,59), p=0,007. Assim como a idade do diagnóstico, que foi de 30,79 (DP 11,33) no grupo de pacientes com TCNEP e de 15,97 (DP 9,67) nos pacientes com epilepsia, p<0,001; 4) A DES teve valores também estatisticamente significativos, sendo 53,35 (DP 23,15) no grupo com TCNEP e de 22,02 (DP 16,37) no grupo com epilepsia, p<0,001. Quanto às subescalas, todas tiveram resultados significativos entre os grupos; 5) O QUESI apresentou também resultados médios significativos, com média de 60,30 (DP 21,75) no grupo de TCNEP e de 45,40 (DP 12,27) no grupo com epilepsia, p=0,014, mas somente as subescalas que identificaram a negligência e o abuso emocionais foram estatisticamente significativas (p=0,013 e p=0,014 respectivamente). CONCLUSÕES: Fenômenos dissociativos e história de trauma na infância são mais frequentes nos pacientes com TCNEP do que nos pacientes com epilepsia. Todavia, em relação à história de trauma, apenas a negligência e o abuso emocionais podem estar associados à TCNEP / INTRODUCTION: Psychogenic non-epileptic seizures are a complex medical condition that may present as physical or neurologic symptoms but without corresponding organic findings, suggesting the presence of psychological factors as the basis of symptoms. They can occur alone or recur systematically. When recurrent they can be associated with low self-esteem, loss of employment, difficulty in intimate and other social relationships. This clinical condition is called a psychogenic non-epileptic seizures disorder (PNESD). Among the risk factors for PNESD, the most widely studied are the history of trauma and the presence of dissociative phenomena. METHODS: In this case-control study, with data obtained between January 2003 and September 2009, 20 patients with PNESD and 20 patients with temporal lobe epilepsy were evaluated after monitoring in video-electroencephalography unit. We excluded subjects with a combination of both conditions. The groups were matched for gender, age, length of school education and social class. We also evaluated age of onset, age at diagnosis and worse seizure frequency. Patientes of both groups responded two structured instruments for history of trauma in childhood and adolescence (QUESI) and FOR the presence of dissociative phenomena (DES) throughout life, both valitaded in Brazil. RESULTS: 1) There was no statistical significant difference between both groups regard to gender, age, social status and seizure frequency; 2) There was a statistical significant difference in education (p = 0.006); 3) Age of onset and at diagnosis in PNESD group were significantly higher (22.25 SD 9, 19) than the control group (11.62 SD 9.59), p = 0.007, as well as age of diagnosis were higher in patients with PNESD (30.79 SD 11.33) than in patients with epilepsy (15.97 SD 9.67), p <0.001; 4) DES values were also significantly higher in the PNESD group (53.35 SD 23.15) than control group (22.02 SD 16.37), p <0.001. As for the subscales all had significant results between groups; 5) QUESI\'s results were also significantly higher in the PNESD group (60.30 SD 21.75) than in epilepsy group (45.40 SD 12.27), p = 0.014, but only the subscales that identify emotional neglect and emotional abuse were statistical significantly in PNESD group (p = 0.013 and p =0.014 respectively). CONCLUSIONS: History of childhood trauma and dissociative phenomena are more common in patients with PNESD than in patients with epilepsy. However, in relation to history of trauma, only emotional neglect and emotional abuse may be associated with PNESD.

Background: Whereas good data are available on the resuscitation of infants, little is known regarding support of postnatal transition in low-risk term infants after c-section. The present study was performed to describe current delivery room (DR) management of term infants born by c-section in our institution by analyzing videos that were recorded within a quality assurance program. Methods: DR- management is routinely recorded within a quality assurance program. Cross-sectional study of videos of term infants born by c-section. Videos were analyzed with respect to time point, duration and number of all medical interventions. Study period was between January and December 2012. Results: 186 videos were analyzed. The majority of infants (73%) were without support of postnatal transition. In infants with support of transition, majority of infants received respiratory support, starting in median after 3.4 minutes (range 0.4-14.2) and lasting for 8.8 (1.5-28.5) minutes. Only 33% of infants with support had to be admitted to the NICU, the remaining infants were returned to the mother after a median of 13.5 (8-42) minutes. A great inter- and intra-individual variation with respect to the sequence of interventions was found. Conclusions: The study provides data for an internal quality improvement program and supports the benefit of using routine video recording of DR-management. Furthermore, data can be used for benchmarking with current practice in other centers.

Diss. (sammanfattning) Umeå : Univ., 2004. / Härtill 5 uppsatser.