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2019, Video-Assisted Thoracic Surgery
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Extraordinary demanding case requires creative solution within expenditure of intellectual energy supported by mature experience, and discerning intuition. This all with single rule: patients benefit. Previous and subsequent sharing and exchange yield full-blown versatility. Pneumothorax in breastfeeding mother, brachial plexus injury caused by lysis of apical adhesions, support of pulmonary plication by autologous fascia lata in advanced pulmonary emphysema, dorsal chest tube insertion through first intercostal space, stubborn pneumothorax in a musician of brass band, successful conservative treatment by chest tube as an alternative of thoracoplasty, talc slurry solution in elderly man with life threatening pneumothorax from advanced lung cancer decay cavity, and in young woman afflicted by lymphangioleiomyomatosis (LAM) are briefly reported.
Little is known about the efficacy of management of iatrogenic pneumothoraces with small-bore chest tubes. The aim of this study was to assess the outcome of iatrogenic pneumothoraces requiring drainage managed with a small-bore chest tube and to compare the results to spontaneous pneumothoraces treated in the same unit with the same device. The primary outcome was requirement of video-assisted thoracoscopic surgery for drainage failure; secondary outcomes were length of drainage and number of inserted chest tubes. Methods: Patients with pneumothorax admitted between 1997 and 2007 were retrospectively identified. Traumatic pneumothoraces and those occurring under mechanical ventilation were excluded. All pneumothoraces were drained using the same small-bore chest tube (8 French) according to our local protocol. Results: Five hundred sixty-one pneumothoraces were analysed, 431 (76.8%) were spontaneous pneumothoraces and 130 (23.2%) were iatrogenic. Iatrogenic pneumothoraces were associated with less requirement of video-assisted thoracoscopic surgery for drainage failure [adjusted odds ratio= 0.24 (0.04, 0.86)]. Length of drainage of iatrogenic pneumothoraces was longer than for primary spontaneous pneumothoraces (3.8 Ϯ 3.1 vs. 2.7 Ϯ 1.8 days, P < 0.001) and shorter than for secondary spontaneous pneumothoraces (4.6 Ϯ 2.3 days, P = 0.004). Number of inserted chest tubes per patient was not significantly different according to pneumothoraces' aetiology. Conclusion: Small-bore chest tubes are feasible for treatment of iatrogenic pneumothoraces and have a better rate of success and slightly longer drainage duration than when used for spontaneous pneumothoraces.
Annals of translational medicine, 2015
The pneumothorax is an abnormal collection of air or gas in the pleural space that separates the lung from the chest wall. Like pleural effusion where a large abnormal concentration of fluid (>100 mL) is liquid buildup in that space, pneumothorax may interfere with normal breathing. A medical term that it is used is the collapsed lung, although that term may also refer to atelectasis. There are two major types of pneumothorax; there is one that occurs without an apparent cause and in the absence of significant lung disease, while the so called; "secondary" pneumothorax occurs in the presence of existing lung pathology. In a minority of cases, the amount of air in the chest increases markedly when a one-way valve is formed by an area of damaged tissue, leading to a third type of pneumothorax, called "tensioned".
European Respiratory Journal, 2006
Spontaneous pneumothorax remains a significant health problem. However, with time, there have been improvements in pathogenesis, diagnostic procedures and both medical and surgical approaches to treatment. Owing to better imaging techniques, it is now clear that there is almost no normal visceral pleura in the case of spontaneous pneumothorax, and that blebs and bullae are not always the cause of pneumothorax. In first episodes of primary spontaneous pneumothorax, observation and simple aspiration are established first-line therapies, as proven by randomised controlled trials. Aspiration should be better promoted in daily medical practice. In the case of recurrent or persistent pneumothorax, simple talc poudrage under thoracoscopy has been shown to be safe, cost-effective and no more painful than a conservative treatment using a chest tube. There are also new experimental data showing that talc poudrage, as used in Europe, does not lead to serious side-effects and is currently the best available pleural sclerosing agent. Alternatively, surgical techniques have considerably improved, and are now less invasive, especially due to the development of video-assisted thoracoscopic surgery. Studies suggest that video-assisted thoracoscopic surgery may be more cost-effective than chest tube drainage in spontaneous pneumothorax requiring chest tube drainage, although it is more expensive than simple thoracoscopy and requires general anaesthesia, double-lumen tube intubation and ventilation. Recommendations are made regarding the treatment of pneumothorax. In secondary or complicated primary pneumothorax, i.e. recurrent or persistent pneumothorax, some diffuse treatment of the visceral pleura should be offered, either by talc poudrage under thoracoscopy or by video-assisted thoracoscopic surgery. Moreover, all of these new techniques should be better standardised to permit comparison in randomised controlled studies. KEYWORDS: Spontaneous pneumothorax, state of the art S pontaneous pneumothorax (SP) is defined as the presence of air in the pleural cavity. It is divided into primary SP (PSP) and secondary SP (SSP). SSP is associated with underlying lung diseases such as cystic fibrosis, chronic obstructive pulmonary disease (COPD), AIDS, etc. There are, therefore, two distinct epidemiological forms of SP, PSP, with a peak incidence in young people, and SSP, with a peak incidence in those aged .55 yrs [1]. Traumatic pneumothoraces (accidental or iatrogenic) [2, 3] are not discussed here. PSP remains a significant health problem, with an annual incidence of 18-28 per 100,000 population in males and 1.2-6.0 per 100,000 population in females [4]. The annual incidence of SSP is 6.3 per 100,000 population in males and 2.0 per 100,000 population in females [5], with incidences varying over time, e.g. during the AIDS-related Pneumocystis carinii pneumonia of the 1980s and
Introduction: Pneumothorax is defined as the presence of air in the pleural cavity, ie, the space between the chest wall and the lung itself. Pneumothorax is classified ethiologically into spontaneous pneumothorax and traumatic pneumothorax. Spontaneous pneumothorax is further classified into primary and secondary. Traumatic pneumothorax may result from either blunt trauma or penetrating injury to the chest wall. It can also be caused by iatrogenic injuries. Spontaneous pneumothorax is a significant health problem because of the high recurrence rate (this is so called recurrent pneumothorax). The aim of the study: the review of modern diagnosis and surgical management of pneumothorax Methodology: This is a review article. We used Medline and Pubmed databasis for retrieving the literature. Conclusion: Pneumothorax, either spontaneous or traumatic, demands urgent intervention in order to normalize lung function and save life of the patient.
Annals of translational medicine, 2015
Pneumothorax is a situation where air is inserted in the pleural space that separates the lung from the chest wall. Pneumothorax can be primary or secondary. There is also a third type called; tensioned. Based on the concentration of air and type of pneumothorax the proper treatment has to be selected. There are cases where the concentration is minimal and observation is enough and more severe cases where surgery is required. Currently there are many techniques used for the biopsy of lung lesions. The bronchoscope (forceps, fine needle aspiration), fine needle aspiration under computed tomography scan and endobronchial ultrasound (EBUS) are commonly used. However, all these techniques have in common a possible side effect; pneumothorax. In our current issue we will focus on the different minimally invasive techniques of pneumothorax management. Moreover, a presentation will be made for several systems that are being used for air or fluid aspiration.
European Journal of Science and Technology, 2021
Studies on the examination of pathological tissue samples with antennas have begun to be developed. In this study, normalization studies performed using a microstrip antenna structure with increased gain are presented. FR-4 substrate with a dielectric constant of 4.4 is preferred in the antenna structure used in the normalization studies. In pathological tissue samples, samples of normal and cancerous skin tissue are modeled in HFSS and simulated. The differences in the normalized S-parameters as a result of the simulations are shown in the tables. While the normal skin tissue normalization value at S11 is 13.4, the value for the tumor skin tissue sample is 18.0. For other S-parameters, different values are obtained for normal and cancerous skin tissue. The differences in the values reveal the success of the proposed antenna structure.
Perception, 1999
The question of whether object representations in the human brain are object-centered or viewer-centered has motivated a variety of experiments with divergent results. A key issue concerns the visual recognition of objects seen from novel views. If recognition performance depends on whether a particular view has been seen before, it can be interpreted as evidence for a viewer-centered representation. Previous experiments used unfamiliar objects to provide the experimenter with complete control over the observers previous experience with the object. In this study, we tested whether human recognition shows viewpoint dependence for the highly familiar faces of well known colleagues and for the observer's own face. We found that observers are poorer at recognizing their own profile, whereas there is no difference in response time between frontal and profile views of other faces. This result shows that extensive experience and familiarity with one's own face is not sufficient to produce viewpoint invariance. Our result provides strong evidence for viewer-centered representation in human visual recognition even for highly familiar objects.
Molecular microbiology, 2015
Multiple species within the Acinetobacter genus are nosocomial opportunistic pathogens of increasing relevance worldwide. Among the virulence factors utilized by these bacteria are the type IV pili and a protein O-glycosylation system. Glycosylation is mediated by O-oligosaccharyltransferases (O-OTases), enzymes that transfer the glycan from a lipid carrier to target proteins. O-OTases are difficult to identify due to similarities with the WaaL ligases that catalyze the last step in LPS synthesis. A bioinformatics analysis revealed the presence of two genes encoding putative O-OTases or WaaL ligases in most of the strains within the genus Acinetobacter. Employing A. nosocomialis M2 and A. baylyi ADP1 as model systems, we show that these genes encode two O-OTases, one devoted uniquely to type IV pilin, and the other one responsible for glycosylation of multiple proteins. With the exception of ADP1, the pilin-specific OTases in Acinetobacter resemble the TfpO/PilO O-Otase from Pseudom...
Professor Doutor do Programa de Pós-Graduação em Formação Científica, Educacional e Tecnologia da UTFPR -Campus de Curitiba. Curitiba -Paraná. Resumo: A presença dos smartphones nas salas de aula tem sido tema de grande debate entre os envolvidos nos espaços educativos. É inegável que a sua inclusão nos processos de ensino e aprendizagem aproxima a escola do mundo no qual o estudante está inserido e um importante passo para elaborar estratégias que envolvam o uso dos smartphones é conhecer as funcionalidades dos aplicativos educacionais. Neste contexto, este artigo se propõe a realizar um mapeamento de aplicativos educacionais gratuitos para o ensino de Física, disponíveis para sistema operacional Android, presente na maioria dos smartphones e disponíveis na loja virtual Google Play Store. Adotou-se como metodologia um mapeamento sistemático organizado em três etapas. No primeiro momento a pesquisa foi realizada por meio da palavra "Física" e foram encontrados 250 aplicativos, a segunda etapa foi destinada a selecionar os aplicativos que contem assuntos relacionados à Física com mais de 10.000 downloads, chegando ao número de 11 aplicativos. Por fim, na terceira etapa, faremos a descrição dos aplicativos selecionados na segunda etapa com mais de 50.000 downloads. O que se notou na descrição dos aplicativos é que praticamente nenhum apresenta contextualização dos fenômenos físicos ou simulações, apenas destacam descrições teóricas ou matemáticas da natureza. Palavras-chave: Ensino de Física, Mobile Learning, Aplicativos Educacionais.
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