L'inhalation pulmonaire du contenu gastrique représente l'une des principales causes de mortalité liée à l'anesthésie en France. La physiopathologie de cette complication fait intervenir, entre autres, la présence d'un contenu gastrique à l'origine d'une augmentation de la pression intragastrique favorisant la survenue de régurgitations et d'inhalations pulmonaires lors de l'anesthésie générale. La prévention de cette complication repose sur l'identification des patients à risque, ainsi que sur l'établissement de stratégies permettant de réduire le contenu gastrique. Suivant ces deux objectifs, nous avons conduit quatre études. Nous avons décrit et évalué l'apport de la mesure échographique de l'aire de section antrale pour l'estimation du volume du contenu gastrique en période préopératoire afin d'identifier les patients à risque d'inhalation pulmonaire. Nous avons montré chez des volontaires sains que la perfusion de 250 mg d'érythromycine est efficace pour accélérer la vidange gastrique des aliments solides lors de la gastroparésie induite par un stress douloureux. Enfin, nous avons déterminé le niveau de pression inspiratoire minimisant l'insufflation d'air dans l'estomac tout en assurant une ventilation satisfaisante lors de la ventilation au masque facial précédant l'intubation trachéale. Ce dernier résultat doit contribuer à modifier les recommandations afin d'améliorer la sécurité des patients lors de la ventilation au masque facial en anesthésie. En perspective d'avenir, l'échographie antrale permettra la réalisation d'études cliniques visant à préciser chez les patients opérés en urgence le risque d'inhalation pulmonaire et évaluant l'efficacité des mesures de prévention / Pulmonary aspiration of gastric content is one of the main causes of mortality related to anesthesia in France. The pathophysiology of this complication involves, among others, the presence of gastric content causing an increase in intragastric pressure leading to regurgitation and pulmonary inhalation during general anesthesia. Prevention of this complication is based on both identifying patients at risk and developing strategies to reduce the gastric contents. Following these two objectives, we conducted four studies. We have described and assessed the contribution of the ultrasound measurement of the antral cross-sectional area for estimating the preoperative volume of gastric content, in order to identify patients at risk of pulmonary aspiration. We have shown in healthy volunteers that the infusion of erythromycin 250 mg was effective in accelerating gastric emptying of solids during gastroparesis related to acute painful stress. Finally, we determined the level of inspiratory pressure that minimizes the risk of gastric insufflation while providing adequate ventilation during facemask ventilation performed prior to tracheal intubation. This result should contribute to the revision of the current recommendations, in order to improve the patient safety during facemask ventilation. In the future, ultrasound measurement of antral area can be used in clinical studies in order to clarify the risk of pulmonary aspiration of gastric content in emergency surgical patients, and to assess the effectiveness of preventive measures

The abbreviation of preoperative fasting with the provision of clear fluid two hours before the operation and the early introduction of a diet in the postoperative period, are indications that may bring benefits for the surgical patient. Objective: To assess the effects of reducing the time of preoperative fasting and early feeding in the postoperative period, in patients undergoing a laparoscopic cholecystectomy. Method: a randomized and controlled clinical trial conducted in a private hospital in Aracaju, Brazil, in which the variables investigated were: the presence of gastric residue, vomiting, bronchoaspiration and satisfaction in the post-operative period of 80 patients, who were randomly divided into two groups, the test group (40 patients) ingested 100 ml of coconut water two hours before induction of anesthesia and the control group (40 patients) followed the conventional fasting for six hours without ingest liquids and were submitted to laparoscopic cholecystectomy. A previous monitoring of patients still under consultation was done, those who met the inclusion criteria received guidance on the development of research and responded to a questionnaire with questions related to the occurrence of symptoms. The numerical scale was used for each patient, with the aim of evaluating the degree of satisfaction related to the reduction of the time of fasting in the preoperative period and early feeding in the postoperative period. The comparative analysis of groups was performed using the Mann-Whitney and Fischer´s Exact Test. The significance level of 5% was considered, while for the descriptive analysis percentages and tables were used. Results: There was no aspiration or regurgitation of gastric contents during the anesthetic induction. There were no deaths or post-operative complications. With regard to residual gastric volume, there was no significant difference between the test and control groups (p=0,704). In addition, there was no significant difference between the groups for the vomiting variable (p>0.05). After having their fasting reduced, the test group had a significant degree of satisfaction (p<0.001). Conclusion: The reduction of pre and post-operative fasting showed less discomfort with apparent satisfaction in patients undergoing laparoscopic cholecystectomy. / A abreviação do jejum pré-operatório com oferta de líquido claro duas horas antes da operação e a introdução precoce de dieta no pós-operatório, são indicações que poderão trazer benefícios para o paciente cirúrgico. Objetivo: Avaliar os efeitos da redução do tempo de jejum pré-operatório e alimentação precoce no pós-operatório, em pacientes submetidos à colecistectomia videolaparoscópica. Método: ensaio clínico randomizado e controlado realizado em um hospital particular de Aracaju, no qual as variáveis investigadas foram: a presença de resíduo gástrico, vômito, broncoaspiração e satisfação no pós-operatório de 80 pacientes, que foram aleatoriamente divididos em dois grupos, o grupo teste (40 pacientes) ingeriu 100 ml de água de coco duas horas antes da indução anestésica e o grupo controle (40 pacientes) seguiu o jejum convencional de seis horas sem ingerir líquidos e foram submetidos à colecistectomia videolaparoscópica. Foi feito um acompanhamento prévio dos pacientes ainda em consultório, aqueles que atenderam aos critérios de inclusão receberam orientações sobre o desenvolvimento da pesquisa e responderam a um questionário com perguntas relativas à ocorrência dos sintomas. A escala numérica foi empregada para cada paciente, com o intuito de avaliar o grau de satisfação relacionada à redução do tempo de jejum no pré-operatório e alimentação precoce no pós-operatório. A análise comparativa de grupos foi feita através do Teste de Mann- Whitney e Exato de Fischer. Considerou-se o grau de significância de 5% e para a análise descritiva foram utilizadas percentagens e tabelas. Resultados: Não houve aspiração ou regurgitação do conteúdo gástrico durante a indução anestésica. Não houve óbito nem complicações pós-operatória. No que se refere a volume residual gástrico, não houve diferença significativa entre os grupos teste e controle (p = 0,704). Também não houve diferença significativa entre os grupos para a variável vômito (p > 0,05). Após ter o seu jejum reduzido, o grupo teste teve um grau de satisfação significativo (p < 0,001). Conclusão: A redução do jejum pré e pós-operatório, sinalizaram menos desconforto com aparente satisfação em pacientes submetidos à colecistectomia videolaparoscópica

Objetivo: Caracterizar os aspectos funcionais de deglutição na população com trauma cranioencefálico (TCE) de um hospital de grande porte, considerando as características clínicas e a gravidade dos indivíduos no momento da admissão hospitalar, utilizando sistemas prognósticos usualmente aplicados no ambiente das unidades de terapia intensiva. Métodos: Participaram do estudo 113 adultos, admitidos em um hospital terciário, com diagnóstico de TCE, submetidos à avaliação fonoaudiológica à beira-leito. As etapas de coleta de dados envolveram: a avaliação fonoaudiológica clínica do risco de broncoaspiração, determinação do nível funcional da deglutição (American Speech-Language-Hearing Association National Outcome Measurement System), determinação da gravidade do indivíduo de acordo com a Escala de Coma de Glasgow no momento da avaliação fonoaudiológica, Sequential Organ Failure Assessment (SOFA) no momento da admissão na Unidade de Terapia Intensiva e no dia da avaliação fonoaudiológica. Foram realizadas duas análises com a mesma população: análise 1- de acordo com a gravidade do TCE, análise 2- de acordo com a funcionalidade da deglutição. Resultados: Indicaram que as pontuações baixas na Escala de Coma de Glasgow têm relação com o aumento do tempo de intubação orotraqueal e na piora da funcionalidade da deglutição na avaliação fonoaudiológica. Houve associação entre o maior tempo de intubação, maior tempo de hospitalização, maior número de atendimentos fonoaudiológicos até a reintrodução da dieta via oral e pior funcionalidade da deglutição. A tosse e o escape extraoral foram os sinais clínicos preditores de broncoaspiração no TCE. Após a intervenção fonoaudiológica, o grupo com pior Glasgow apresentou piores resultados na evolução da funcionalidade da deglutição. Em relação ao escore SOFA, os sistemas orgânicos respiratório, cardiovascular e neurológico foram as principais alterações encontradas na população com TCE. É importante entender os mecanismos do TCE nos aspectos neurológico, cognitivo e comportamental para poder utilizar as melhores estratégias na identificação dos indivíduos com pior funcionalidade da deglutição e com necessidade de terapia fonoaudiológica precoce. Conclusão: Ao estabelecer os parâmetros clínicos que podem prever os aspectos relacionados à funcionalidade da deglutição durante a internação hospitalar, é possível auxiliar no gerenciamento e planejamento da reabilitação / Objective: to characterize the swallowing functional aspects in the severe traumatic brain injury (TBI) population in a large hospital considering the clinical features and the subjects\' severity at the moment of hospital admission adopting prediction models usually applied in the intensive care unit environment. Methods: 113 adults participated in the study; they were admitted at a tertiary referral hospital with a TBI diagnosis and were submitted to a bedside speech-language assessment. The data collection steps included: a clinical speech-language assessment for risk of bronchoaspiration, determination of swallowing functional level (American Speech-Language-Hearing Association National Outcome Measurement System), determination of individual\'s severity according to the Glasgow Coma Scale at the moment of the speech-language assessment, Sequential Organ Failure Assessment (SOFA) at the moment of admission at the intensive care unit and on the day of the speech-language assessment. Two analyses were carried out with the same population: analysis 1 - according to the trauma severity, analysis 2 - according to the swallowing functionality. Results: The results indicated that low scores in the Glasgow Coma Scale are related to higher orotracheal intubation time and worsening of swallowing functionality in the speech-language assessment. There was a link between higher intubation and hospitalization periods, higher number of speech-language therapies until the reintroduction of oral diet and worse swallowing functionality. Cough and extraoral escape were found as clinical risk factors for bronchoaspiration in the TBI. After the speech-language intervention, the group with worst Glasgow presented worst results in the swallowing functionality progress. With regard to the SOFA score, the respiratory, cardiovascular and neurological organic systems were the main alterations found in the TBI population. It is important to understand the TBI mechanisms in the neurological, cognitive and behavioral aspects to adopt the best strategies in the identification of the subjects with worst swallowing functionality and in need of early speech-language therapy. Conclusion: By establishing the clinical parameters that may foresee aspects related to the swallowing functionality during hospitalization, it is possible to help in the management and planning of rehabilitation

INTRODUÇÃO: A deglutição é um processo complexo que requer a coordenação precisa de mais de 25 músculos, seis pares de nervos cranianos e os lobos frontais. O comprometimento neste processo, denominado de disfagia, pode aumentar a taxa de morbidade dos pacientes e também o risco para a aspiração, retardando a administração de uma nutrição adequada por via oral. A intubação orotraqueal prolongada, definida na literatura como período superior a 48 horas de intubação, poderá causar alterações na deglutição e ocasionar a disfagia após a extubação. OBJETIVO: correlacionar a gravidade de pacientes críticos não neurológicos com preditores clínicos do risco de broncoaspiração. MÉTODOS: Participaram do estudo adultos, com histórico de intubação orotraqueal prolongada ( > 48 horas), submetidos à avaliação da deglutição em beira de leito nas primeiras 48 horas após a extubação. A coleta de dados envolveu: avaliação fonoaudiológica clínica do risco de aspiração broncopulmonar; determinação do nível funcional da deglutição (American Speech-Language-Hearing Association National Outcome Measurement System); determinação da gravidade do paciente (Sequential Organ Failure Assessment). RESULTADOS: a amostra do estudo foi composta por 150 pacientes. Para fins da análise estatística, os pacientes foram agrupados da seguinte forma: ASHA 1 (sem possibilidade de alimentação por via oral); ASHA 2 (sem possibilidade de alimentação por via oral); ASHA 3 (deglutição funcional). As análises estatísticas indicaram os seguintes resultados significantes: indivíduos no grupo ASHA 3 eram mais jovens (46,4±18,30), permaneceram entubados por menos tempo (4,9±2,7 dias) e apresentaram menor gravidade de quadro clínico geral (Sequential Organ Failure Assessment 2,00-5,00). Os sinais clínicos preditores de broncoaspiração que mais diferenciaram os grupos foi a presença de ausculta cervical alterada e presença de tosse após a deglutição, sendo que o grupo ASHA 3 não apresentou esses sinais. CONCLUSÃO: Pacientes críticos, submetidos à IOTP, idade >= 55 anos, com período de intubação >=6 dias, gravidade de quadro clínico geral >= 5 na Sequential Organ Failure Assessment, pontuação na Escala de Coma de Glasgow <=14, e com ausculta cervical alterada e tosse após a deglutição, devem ser priorizados para a avaliação fonoaudiológica completa / INTRODUCTION: Swallowing is a complex process, that require the precise timing and coordination of more than 25 muscles, six cranial nerves and frontal lobes. Compromise of this process, or dysphagia, can result in profund morbidity, increasing the changes of aspiration and delaying the admistration of proper oral nutrition. It is know that an orotracheal tube might disturb these intricately choreographed events and cause post-extubation dysphagia. Prolonged intubation, typically defined as longer than 48 hours in the literature, is thought to contribute to swallowing dysfunction. OBJECTIVES: to correlate the severity of non-neurologic critical patients with clinical predictors for the risk of bronchoaspiration. METHODS: Participants of this study were adults, submitted to prolonged orotracheal intubation ( > 48 hours) and to a swallowing bedside evaluation during the first 48 hours after extubation. Data gathering involved: clinical assessment of the risk for bronchoaspiration performed by a speech-language pathologist; assessment of the funcitional level of swallowing (American Speech-Language-Hearing Association National Outcome Measurement System); assessment of the patient\'s health status (Sequential Organ Failure Assessment). RESULTS: the study sampel was composed by 150 patients. For the analyses purposes, patients were grouped as follows: ASHA 1 (individual is not able to swallow safely and alternative feeding is required); ASHA 2 (alternative feeding is required, but individual may receive some nutrition and hydration by mouth); ASHA 3 (swallowing is functional). Statistical analyses indicated that: ASHA 3 patients were younger (46,4±18,30 years), remained intubated for fewer days (4,9±2,7) and presented a less severe overall health status (Sequential Organ Failure Assessment 2,00-5,00). The clinical predictor signs for bronchoaspiration that best characterized the groups were altered cervical auscultation and presence of cough after swallowing. ASHA 3 patients did not present these signs. CONCLUSION: Critical patients, submitted do POTI, with ages >= 55 years, intubation period >= 6 dias, overall health status >= 5 Sequential Organ Failure Assessment score, Coma Glasgow Scale <= 14, and presenting altered cervical auscultation and cough during swallowing, should be prioritized for a complete swallowing assessment

La diffusion latérale des lipides et des protéines transmembranaires est essentielle pour les fonctions biologiques. Dans le contexte cellulaire, la fraction surfacique des protéines membranaires est élevée, atteignant environ de 50 à 70% selon le type de membrane. La diffusion se fait donc dans un milieu très encombré. Le but de ce travail est d'étudier in vitro l'effet de l'encombrement des protéines sur la diffusion des protéines et des lipides. Jusqu'à présent, les mesures de diffusion latérale ont généralement été réalisées à faible densité de protéines, et l'effet de l'encombrement des inclusions membranaires ou des protéines membranaires a été peu étudié expérimentalement. Nous avons utilisé une méthode de suivi de particules uniques (SPT) pour suivre les trajectoires de la pompe à protons Bactériorhodopsine (BR) et de lipides marqués avec des quantum dots au bas de vésicules unilamellaires géantes (GUVs) en fonction de la fraction de surface totale (Ф) de BR reconstituée dans la membrane constituée par ailleurs de 1,2-Dioleoyl-sn-glycéro-3-phosphocholine (DOPC). / Lateral diffusion of lipids and transmembrane proteins is essential for biological functions. In the cellular context, the surface fraction of membrane proteins is high, reaching approximately 50 to 70% depending on the membrane type. Therefore, diffusion occurs in a very crowded environment. The aim of this work is to study in vitro the effect of protein crowding on their own diffusion and on those of the surrounding lipids. So far, lateral diffusion measurements generally have been carried out at low protein density, and the effect of proteins crowding has not been much studied experimentally. We used a single particle tracking (SPT) method to track the trajectories of the Bacterorhodopsin (BR) proton pump and of lipids labeled with quantum dots at the bottom of giant unilamellar vesicles (GUVs) as a function of the total surface fraction (Ф) of BR reconstituted in 1,2-Dioleoyl-sn-glycero-3-phosphocholine (DOPC) membrane.

This diploma thesis deals with the design of an autonomous system for the measurement of the concentration of atmospheric ions. This is a new version of the already asembled Iontmeter by UTEE FEKT. Unlike the previous version, this new one should be completely independent of electrical network and configurable even without a PC. The design includes increased water and dust resistance, wireless transmission from the weather station and its own temperature, atmospheric pressure and relative humidity sensor.

This Master thesis deals with low-current measurement in order of picoamps up to a few tens of femtoamps. Such low currents measuring is necessary for determination of air ions concentration. Disturbances, which are otherwise negligible for ordinary measurements must be considered. For example, leakage currents and noise generated in measuring device circuit. The choice of a precise operation amplifier with low input bias current is as important as the selection of low noise passive components. The aim of the thesis is to design and implement a precise low-level amplifier for the purposes of air ions concentration measurements.

Nicaragua hat eine der höchsten Teenager-Geburtenraten in Lateinamerika. Das Ziel dieser Studie ist es, die subtilen Konzepte, Wahrnehmungen, Überzeugungen und Einflussfaktoren zu verstehen, die zu unterschiedlichen Fertilitätsentscheidungen junger Frauen führen können. Die Ergebnisse basieren auf qualitativen Daten, die im städtischen Nicaragua erhoben wurden. Die Studie zeigt, dass zwei strukturelle Beschränkungen die Wahlmöglichkeiten von Frauen und ihre Fähigkeit beeinflussen, aktiv an der Definition ihrer Lebenswege teilzunehmen: Armut und traditionelle Geschlechternormen. In einer armen Umgebung aufzuwachsen, bedeutet nicht nur finanzielle Benachteiligung, sondern auch mangelnde Bildungsqualität, Mangel an effektivem und zeitnahem Zugang zu Gesundheitsdiensten, Gewalt in den Wohnvierteln, Mangel an Chancen auf dem Arbeitsmarkt, Mangel an positiven Vorbildern. Darüber hinaus beeinflussen traditionelle Geschlechternormen das sexuelle Verhalten junger Frauen, ihre Interaktionen mit ihren Familien und Partnern und die Art und Weise, wie sie sich ihr Leben vorstellen. Diese Faktoren haben nicht nur Auswirkungen auf den Entscheidungsprozess, sondern auch auf die Konsequenzen dieser Entscheidungen für die jungen Frauen und ihre Kinder. / Nicaragua has one of the highest adolescent fertility rates in the region. The objective of this study is to understand the subtle concepts, perceptions, beliefs, and influencing factors that may lead to different fertility outcomes among young women. The results are based on qualitative data collected in urban Nicaragua. The study shows that two structural constraints affect women’s choices and their capacity to actively participate in defining their life paths: poverty and traditional gender norms. Growing up in a poor environment not only means monetary deprivation, but also exposure to a lack of quality education, a lack of effective and timely access to health services, violence in neighborhoods, an absence of opportunities in the labor market, and a lack of positive role models. In addition, traditional gender norms affect young women’s sexual behavior, their interactions with their families and partners, and the way they envision their lives. Those factors have implications not only for the process of decision-making, but also for the outcomes of those decisions for the young women and their children.

No description available.

BACKGROUND: Studies have consistently demonstrated low rates of adoption of Advance Care Planning in the community. METHODS: We studied Medicare enrollees age 65 and over and non-Medicare patients using a cross-sectional survey undertaken in February and March 2019 using questionnaires completed by out-patients attending a teaching hospital clinic in East Tennessee USA. We evaluated patient knowledge, attitudes, satisfaction and aspirations towards Advance Care Planning. RESULTS: 141 properly completed questionnaires were used. All Medicare enrollees were aware of Advanced Care Planning compared to 43% in the non-Medicare group. 70% of the Medicare enrollees and 94% of non-Medicare group were not ready to complete a written Advanced Care Plan. Of the respondents, 46% had appointed spouses, 24% adult children, 11% siblings, 10% parents, 3.6% friends and 1.2% aunts as their surrogate medical decision makers. 41% agreed that they were satisfied with their current advance care planning arrangements. This research identified that individual's knowledge, attitudes and aspirations influenced the adoption of Advance Care. CONCLUSIONS: Patients have adopted the Advance Care Plan concept but have modified it to reduce their concerns by using family and loved ones to convey their wishes instead of filling the required legal documents. Clinicians could improve this informal system and increase the observability of the treatment choices including the use of video and web-based tools.