Unconstrained video monitoring of breathing behavior and application to diagnosis of sleep apnea

This paper presents a new real-time automated infrared video monitoring technique for detection of breathing anomalies, and its application in the diagnosis of obstructive sleep apnea. We introduce a novel motion model to detect subtle, cyclical breathing signals from video, a new 3-D unsupervised self-adaptive breathing template to learn individuals' normal breathing patterns online, and a robust action classification method to recognize abnormal breathing activities and limb movements. This technique avoids imposing positional constraints on the patient, allowing patients to sleep on their back or side, with or without facing the camera, fully or partially occluded by the bed clothes. Moreover, shallow and abdominal breathing patterns do not adversely affect the performance of the method, and it is insensitive to environmental settings such as infrared lighting levels and camera view angles. The experimental results show that the technique achieves high accuracy (94% for the clinical data) in recognizing apnea episodes and body movements and is robust to various occlusion levels, body poses, body movements (i.e., minor head movement, limb movement, body rotation, and slight torso movement), and breathing behavior (e.g., shallow versus heavy breathing, mouth breathing, chest breathing, and abdominal breathing). © 2013 IEEE

Factors Facilitating Constructive Coping with Stress

This review focuses on coping with stress, with particular emphasis on mechanisms facilitating constructive coping with stress. An important area of contemporary research is the attempt to identify factors that make it possible to stay mentally healthy or preventing the weakening of the cognitive and social functioning. The currently prevailing approach to stress is the relational approach. According to this approach, the criterion for the occurrence of stress is the cognitive assessment of the situation made by an individual. This review presents the most recent proposals concerning the analysis of specific methods of coping with stress, in particular from the perspective of their adaptiveness. Particular attention is paid to meaningfocused coping. We also discuss the presence of positive emotions in difficult situations. Positive emotions may play many adaptive functions especially in long-term stress situations: they make it possible to rebuild physical, intellectual and social resources, and they also extend the scope of attention and action. Positive emotions may also, to a certain extent, mitigate psychological and physiological consequences of stressful events. Finally we discuss the main directions of research related to factors determining well-being and sample experiments aimed at intensifying the feeling of happiness

The Role of Stress in Assessing Life Satisfaction and Self-Efficacy Among Prison Officers

Stress is a major public health concern. It can be observed in all aspects of life, in everyday family life and work life. The focus of this article is work-related stress. Work stress can be observed in any work environment and in all professions. As a complex condition it affects different people in different ways. The study presented in this article was done on a sample of 59 prison officers who volunteered to participate. Among those 59 participants 34 were males and 25 were females aged between 25 to 52. Each participant received a survey to collect general information about the person and included three questionnaires: The Questionnaire of Stress in the Prison Service (KSSW), Generalized Self-Efficacy Scale (GSES), and Satisfaction with Life Scale (SWLS). The questionnaire took approximately 45 minutes. Results turned out to be rather surprising. Findings showedthat job stress of prison officers is not significantly correlated with the amount of time they spend among prisoners. The results also showed that being married or having a partner is not a protective factor against job stress for that sample. Results also showed that negative significant correlation between job stress and life satisfaction and job stress and self-efficacy were only found for particular subscales of KSSW not for the overall levels of stress.Further analysis of the results suggests that the very core of prison officers’ job is the most stressful factor. This is an interesting finding that may be a basis for further research for specific stressors and coping strategies that may help the officers

Increase in serum platelet-derived growth factor (PDGF)-BB reflects lymph node involvement in esophageal cancer patients independently from platelet count

Aim: To evaluate clinical significance and diagnostic utility of increase in serum PDGF-BB (sPDGF-BB) in esophageal cancer, which have not been addressed yet despite the relevance of PDGF axis in this cancer type. Methods: Immunoenzymatically assessed sPDGF-BB was related to clinicopathological features, and inflammatory, angiogenic, and lymphangiogenic indices in 84 patients with esophageal cancer and 47 controls. Its diagnostic utility was evaluated by receiver operating characteristics (ROC) curve analysis. Results: sPDGF-BB was significantly higher in esophageal cancer patients than controls (3.76 vs. 2.66 µg/l, p = 0.0001) and corresponded with the disease advancement. Of evaluated clinicopathological features, lymph node metastases and distant metastases were independently associated with an increase in sPDGF-BB; however, only the association with lymph node metastases persist adjustment to platelets. In univariate analysis, sPDGF positively correlated with platelets (r=0.70, p 2.845 µg/l cut-off, over 76% of patients had elevated sPDGF-BB. Its accuracy as lymph node metastases marker was 75%, sensitivity and specificity corresponding with >3.029 µg/l cut-off were 84 and 61%, respectively. Conclusions: sPDGF-BB owns potential as a possible lymph node metastases marker and might be considered as a diagnostic tool in preliminary evaluation of esophageal cancer patients identifying those likely to be burdened with lymph node metastases, the disease recurrence monitoring, and/or preselecting patients for PDGF-directed cancer therapies

Children with Asthma: What About the Quality of Life of Their Parents?

An increased frequency of asthma in children has been lately observed. The course of asthma depends not only on treatment. but also on the actions taken by the parents of a sick child. Design: A non-experimental cross-sectional design. Methods: In this study the Pediatric Asthma Quality of Life Questionnaire (PACQLQ) and Satisfaction with Life Scale (SWLS) were administered to 60 parents of children with :asthma. Two groups of parents were compared. The first group consisted of parents of children who had been diagnosed with asthma less than three months before the beginning of the study. The second group consisted of parents of children who had been diagnosed at least one year previously. Results: It was observed that. in the group of parents aged 20-30 years, the level of life satisfaction was significantly higher for parents of children who had suffered from asthma for at least one year than for the parents of children recently diagnosed with asthma. There were no statistically significant differences in the other age groups. There was a positive correlation between the level of satisfaction with life and emotional functioning in the parents of children diagnosed recently. Conclusions: The results of the present study point to a general ability of parents to adapt to the situation of having an ill child. This may be related to the relative ease of access to information that enables parents to understand more about the condition

Quality of Life of Parents of Children with Asthma

An increased frequency of asthma in children has been lately observed. The course of asthma depends not only on treatment, but also on the actions taken by the parents of a sick child. Design: A non-experimental cross-sectional design. Methods: In this study the Pediatric Asthma Quality of Life Questionnaire (PACQLQ) and Satisfaction with Life Scale (SWLS) were administered to 60 parents of children with asthma. Two groups of parents were compared. The first group consisted of parents of children who had been diagnosed with asthma less than three months before the beginning of the study. The second group consisted of parents of children who had been diagnosed at least one year previously. Results: It was observed that, in the group of parents aged 20-30 years, the level of life satisfaction was significantly higher for parents of children who had suffered from asthma for at least one year than for the parents of children recently diagnosed with asthma. There were no statistically significant differences in the other age groups. There was a positive correlation between the level of satisfaction with life and emotional functioning in the parents of children diagnosed recently. Conclusions: The results of the present study point to a general ability of parents to adapt to the situation of having an ill child. This may be related to the relative ease of access to information that enables parents to understand more about the condition

Impact of systemic hypoxemia on cancer aggressiveness and circulating vascular endothelial growth factors A and C in gastroesophaeal cancer patients with chronic respiratory insufficiency

Aim: Due to the common etiologic factor, a considerable number of esophagogastric cancer patients suffer from respiratory insufficiency in course of chronic obstructive pulmonary disease, primary to cancer. Systemic hypoxemia may account for poor oxygenation of tumor tissue-a main driving force of tumor neoangiogenesis. We hypothesized that in cancer patients with respiratory insufficiency, systemic hypoxemia may be related to enhanced aggressiveness of cancer on one side and to the elevation of angiogenic factors on the other. Methods: The levels of vascular endothelial growth factors A and C were determined with immunoenzymatic methods in patients diagnosed with esophagogastric cancer with or without co-existing respiratory insufficiency in course of chronic obstructive pulmonary disease and in healthy controls. Blood gasometry and hemoglobin levels of cancer patients were related to cancer histology and TNM status, and to circulating vascular endothelial growth factors A and C. Results: Patients with systemic hypoxemia had higher incidence rates of locally advanced tumors. Partial oxygen pressure and blood oxygen saturation were significantly lowered in patients with T4 cancers as compared to less advanced onces. Circulating vascular endothelial growth factor A, but not C, was more elevated in esophagogastric cancer patients with co-existing respiratory insufficiency, as compared to those without respiratory insufficiency. Vascular endothelial growth factor A was also strongly related to the extension of primary tumor. Conclusion: Our results show that systemic hypoxemia in esophagogastric cancer patients is associated with the extension of primary tumor and that this effect might be mediated by the up-regulation of circulating vascular endothelial growth factor A.Цель: в связи с общим этиологическим фактором заболевания , значительное количество больных гастроэзофагальным раком страдает от респираторной недостаточности в процессе хронического обструктивного легочного заболевания, кото- рое предшествует раку. Системная гип оксемия может влиять на пониженн ую оксигена цию опухолево й ткани — основной источник опухолевого неоангиогенеза. Авторы предп оложили , что у больных онкологического п рофиля с респираторно й недостаточностью системная гипоксемия может быть связана с повышенной агрессивностью опухолевого процесса, с одной стороны, и повышенным уровнем ангиогенных факторов — с другой. Методы: сод ержание факторов роста эндо- телия сосудов A и C ( VEGF ) опред еляли имму ноферментными мето дами у пациентов с гастроэзофагальным раком на фоне респираторной недостаточности в процессе хронического обструктивного заболевания легких или в отсутствие такового, а также у здоровых доноров. Анализировали д анные газометрии и сод ержания гемоглобина в зависимости от гистологии новообразования, статуса TNM и уровня VEGF A и C. Результаты: у больных с системно й гипоксемие й частота появления новообразований была выше. Парциальное давление кислоро да и насыщение крови кислоро д ом значительно снижено у пациентов с категорией T4. Повышение сод ержания циркулирующего VEGF A, но не C, более выражено у больных с респи- раторной недостаточностью, чем без нее. Содержание VEGF коррелировало с объемом первично й опухоли . Выводы: на результаты показывают, что системная гипоксемия у пациентов с гастроэзофагальным раком связана с увеличением объема первичной опухоли, и такой эффект может быть опосредован повышением содержания циркулирующего VEGF

Respiratory insufficiency related to copd accelerates systemic inflammation, under-nutrition, and angiogenesis in esophageal malignancies

A number of esophageal cancer patients suffer from respiratory insufficiency due to the coexistence of chronic obstructive pulmonary disease (COPD). Aim: To test the hypothesis that COPD-related systemic hypoxemia may result in accelerated inflammation, malnutrition, and angiogenesis in esophageal cancer patients. Methods: Serum levels of C-reactive protein (CRP), albumin, transferrin, interleukin-1, interleukin-6, interleukin-8, TNF- a, platelet-derived growth factor (PDGF-BB), and midkine and patient BMI and weight-loss rate were determined and compared with blood oxygenation status (pO2, SaO2) in 35 esophageal cancer patients and 42 controls. Results: The incidence of cachexia tended to be higher in patients with systemic hypoxemia (67% vs 40%, p = 0.169). Mean SaO2 level was also significantly decreased in cachectic patients (90.3 vs 93.3%, p = 0.026) and pO2 exhibited a similar trend (58.0 vs 63.4 mmHg, p = 0.120). Transferrin (234 vs 316 mg/dl, p = 0.005) and albumin (31.9 vs 37.1 mg/dl, p = 0.002) concentrations were reduced and CRP was elevated (129.9 vs 54.7 mg/l, p = 0.004) in hypoxemic patients and correlated with pO2 (r = 0.47, p = 0.016; r = 0.48, p = 0.012; r = –0.37, p = 0.064) and SaO2 (r = 0.52, p = 0.006; r = 0.53, p = 0.006; r = –0.40, p = 0.042). Interleukin-6 (9.97 vs 2.21 pg/ml, p = 0.005) and midkine (2101 vs 944 pg/ml, p < 0.001) were elevated and PDGF-BB was decreased (12.2 vs 17.3 pg x 10-6/PLT, p = 0.014) in hypoxemic compared with normoxemic patients. Interleukin-6 and midkine negatively correlated with pO2 (r = –0.44, p = 0.016; r = –0.42, p = 0.011) and SaO2 (r = –0.54, p = 0.003; r = –0.57, p < 0.0001) and PDGF-BB correlated positively (r = 0.53, p = 0.003; r = 0.44, p = 0.020). Interleukin-8 level was affected by pO2 (r = -0.55, p = 0.015) and SaO2 (r = –0.55, p = 0.018) only in hypoxemic patients. Conclusions: COPD-related systemic hypoxemia negatively affects the status of esophageal cancer patients by accelerating inflammation, under-nutrition, and angiogenesis.Многие больные раком пищевода страдают от респираторной недостаточности из-за развития хронического обструктивного легочного заболевания (COPD). Цель: Проверить гипотезу о возможной связи системной гипоксемии, ассоциированной с COPD, с усилением воспалительных процессов, истощением и ангиогенезом у больных раком пищевода. Методы: у 35 больных раком пищевода и 42 здоровых доноров определяли уровень CRP, альбумина, трансферина, интерлейкина-1, интерлейкина-6, интерлейкина-8, TNF-α, PDGF-BB и мидкина в сыворотке крови, показатели BMI и потери веса больных, а также показатели уровня оксигенации крови (pO2 , SaO2 ). Результаты: частота возникновения кахексии была выше у больных с системной гипоксемией (67 против 40%, p = 0,169). Средний уровень SaO2 был также значительно снижен у больных с кахексией (90,3 против 93,3%, p = 0,026), с той же тенденцией и для уровня pO2 (58,0 против 63,4 mmHg, p = 0,120). Концентрации трансферина (234 против 316 мг/дл, p = 0,005) и альбумина (31,9 против 37,1 мг/дл, p = 0,002) были снижены, CRP повышен (129,9 против 54,7 мг/л, p = 0,004) у гипоксемических пациентов, что кореллировало с показателями pO2 (r = 0,47, p = 0,016; r = 0,48, p = 0,012; r = –0,37, p = 0,064) и SaO2 (r = 0,52, p = 0,006; r = 0,53, p = 0,006; r = –0,40, p = 0,042). Уровень интерлейкина-6 (9,97 против 2,21 pg/ml, p = 0,005) и мидкина (2101 против 944 pg/ml, p < 0,001) был также повышен, а уровень PDGF-BB понижен (12,2 против 17,3 pg × 10-6/PLT, p = 0,014) у гипоксемических больных по сравнению с показателями при нормоксемии. Уровни интерлейкина-6 и мидкина негативно кореллировали с показателями pO2 (r = –0,44, p = 0,016; r = –0,42, p = 0,011) и SaO2 (r = –0,54, p = 0,003; r = –0,57, p < 0,0001) и позитивно — с PDGF-BB (r = 0,53, p = 0,003; r = 0,44, p = 0,020). На уровень интерлейкина-8 влияли pO2 (r = –0,55, p = 0,015) и SaO2 (r = –0,55, p = 0,018) только у больных с гипоксемией. Выводы: ассоциированная с COPD системная гипоксемия негативно влияет на состояние больных раком пищевода за счет ускорения воспалительных процессов, истощения и ангиогенез

A Generic Framework for Implicate Generation Modulo Theories

International audienceThe clausal logical consequences of a formula are called its implicates. The generation of these implicates has several applications, such as the identification of missing hypotheses in a logical specification. We present a procedure that generates the implicates of a quantifier-free formula modulo a theory. No assumption is made on the considered theory, other than the existence of a decision procedure. The algorithm has been implemented (using the solvers MiniSAT, CVC4 and Z3) and experimental results show evidence of the practical relevance of the proposed approach

Even a mild anemia is related to tumor aggressiveness mediated by angiogenic factors

Esophagogastric cancers have high recurrence rates with lymph nodes being a common pattern. Pre-treatment anemia has been reported an independent prognostic factor of treatment failure regardless of treatment strategy, particularly associated with poor locoregional control. A causative relationship between anemia — tumor hypoxia — tumor aggressiveness mediated by angiogenesis up-regulation is advocated, yet remains controversial. Aim: To determine whether and how the pre-treatment anemia is associated with various aspects of disease aggressiveness and to evaluate the possible involvement of angiogenesis mediators. Methods: In 111 esophagogastric cancer patients we investigated the association of pre-treatment hemoglobin concentration and anemia presence with cancer-related, patients-related features and laboratory parameters including angiogenic factors: vascular endothelial growth factors A and C, interleukin-8 and midkine. Serum levels of angiogenic factors were assessed with immunoenzymatic tests. Results: Histology, disease stage, regional metastasis and dissemination in general, malnutrition and angiogenesis represented by midkine were found to correlate with anemia presence and hemoglobin concentration, while tumor extension, patient’s age and sex accounted only for anemia presence. A tendency towards hemoglobin correlation with VEGF-A and Il-8 was also observed. Midkine, tumor histology and malnutrition were found to exert an independent effect on pre-treatment hemoglobin concentration and anemia presence in esophagogastric cancer patients. Hemoglobin level of 12 g/dL was found an optimal cut-off value for discrimination between localized and disseminated cancers. Conclusions: Even a mild pre-treatment anemia is associated with cancers metastasizing especially to regional lymph nodes, which seems to be mediated by some of studied angiogenic factors