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Generation of Curved Spacetime in Quantum Field
No full textTo reach such a consistent theory which contains the quantum field theory of particle physics and Einstein’s theory of gravitation as limiting cases, one may proceed in the following way: Standard quantum field theory just ignores the effects of gravity. This is justified in many cases due to the weakness of gravitational interactions at the presently accessible scales. In a first step beyond this approximation, one may consider an external gravitational field that is not influenced by the quantum fields. Here one may think of sources of gravitational fields that are not influenced by the quantum fields under consideration, as high-energy experiments in the gravitational field of the earth or quantum fields in the gravitational field of dark matter and dark energy. This approach amounts to the treatment of quantum field theory on curved spacetimes. The problem of quantization in curved spacetimes is now clearly visible. In Minkowski spacetime, there is a large group of symmetries that enforces a particular choice of vacuum by demanding the vacuum to be invariant. Such a criterion is absent for a general spacetime (M,g). We therefore do not know which state to choose as the vacuum. One might hope that the different prescriptions might be unitarily equivalent such that it doesn’t matter which state one takes to define the theory. Sadly this is not the case: The Stone-Von Neumann theorem is no longer valid for systems with an infinite amount of degrees of freedom. This means that unitarily inequivalent representations of the canonical commutation relations will arise, and it is not clear which equivalence concept representation is the physical one. In the second section of this chapter, we review the notions of Cauchy surfaces and global hyperbolicity
Genital Condyloma in a 2-Year-Old Child Secondary to Circumcision: A Case Report
No full textAccumulated condylomas are exophytic tumors with a warty and hyperkeratosic surface due to the Human papillomavirus (HPV). Its prevalence in children is difficult to estimate due to limitations in epidemiological data. Its recurrent character is found in 30% of patients. Its management is very complex in children because of skin fragility. Circumcision is an operation consisting of the removal of part of the foreskin. This practice is done either with a simple knife or a pair of non-aseptic scissors which can be a source of contamination including HPV (Condyloma). Traditional circumcision does not seem to be reported in the literature as a mode of contamination. We report a case of genital condyloma in a child 2 years after circumcision. This is a 2-year-old male with no medical history but with a surgical history of circumcision that was brought by his parents in dermatological consultation for papular lesions accumulated on the penis. At the interrogation, we found the notion of recent circumcision performed by a tradithérapeute. The physical examination finds a good general condition. Dermatological examination reveals on the glans of multiple papules, exophitic, with warty and hyperkeratotic surface, of normal skin color. Furthermore, the physical examination of both parents was normal. The diagnosis of accumulated condyloma secondary to probable circumcision was retained before the clinical appearance of the lesions. Two electrocoagulation sessions spaced one month apart under local anesthesia were the treatment with a favorable evolution
Management and use of Ash in Britain from the Prehistoric to the Present: Some implications for its Preservation
No full textThe properties that make the wood of fast-grown Ash pliable, strong, and resilient have been exploited by man for thousands of years, and are illustrated by reference to the probable use of Ash timber for tools, arms, and transport by the Roman Army of Occupation in Britain two thousand years ago. Militarily organized and disciplined, the Roman Army was responsible for changing the face of Britain with huge infrastructure projects that required significant numbers of tools, equipment, and fuel, in addition to the arms it used to maintain control over the fractious tribes of the north. The extent to which it maintained supplies of this valuable resource by managing its woods, possibly by coppicing, is discussed and raises the question as to the degree of genetic selection involved in coppicing.Ash: Fraxinus excelsior: extinction: prehistoric and historic uses: Roman army military use of Ash
Cost Assessment of Corticosteroid Therapy for Corticosteroid-sensitive Dermatoses in a Resource-limited Country
No full textIntroduction: Corticosteroid therapy is widely used in dermatology for treating various conditions. In France, the cost of corticosteroid treatment varies, and in Mali, a significant prevalence of corticosteroid-treated diseases has been reported. Given the prolonged treatment duration often required, understanding the cost implications in resource-limited settings is crucial.Patients and methods: This descriptive cross-sectional study took place at the dermatology department of the University Hospital Center of Dermatology in Bamako. Data were prospectively collected from patients undergoing corticosteroid therapy over one year. Variables included sociodemographic data, clinical information, and medication costs.Results: During the study period, 24 cases of dermatoses treated with corticosteroids were identified among 125 hospitalized patients, representing a prevalence of 19.2%. Most patients were women (58.3%), with an average age of 37.5 years. Lichen planus (54.2%) and pemphigus (37.5%) were the most common pathologies. Many patients had extensive lesions before treatment, but the majority responded well to corticosteroids.Discussion: Despite study limitations, such as its descriptive nature, it provided valuable insights into the economic evaluation of long-term corticosteroid therapy. The predominance of women, the age distribution, and the prevalence of specific dermatoses were highlighted. The study also revealed the substantial financial burden of corticosteroid treatment, primarily driven by direct costs.Conclusion: The study underscores the financial challenges associated with long-term corticosteroid therapy in dermatology in Mali. The high costs adversely affect patients and their families, especially considering the socioeconomic status of many patients. Moreover, the findings emphasize the importance of comprehensive care strategies and the need for accessible healthcare solutions to address these challenges effectively
Hospitalization, Surgery and loneliness
No full textBeing hospitalized or undergoing a surgical procedure may be quite an isolating and lonely experience. This review explored loneliness in the hospital and surgical setting, and highlights the emotional and psychological challenges experienced by patients during their healthcare journey. While hospitals traditionally provide medical and surgical care for a wide array of conditions, the irony lies in their potential to disrupt one’s daily routines, contribute to loss of control, prolong hospital stays, and limit connections with family and loved ones leading to negative psychological well-being and intensifying feelings of loneliness. The implications of loneliness in the hospital and surgical contexts are discussed along with recommendations for improving the healthcare system’s response to the negative health consequences associated with loneliness. Coping strategies are discussed, including social support mechanisms, and approaches to healthy behaviors, i.e. mindfulness, which contribute to mitigating loneliness, in the context of hospitalizations and surgery
PET TAC and Resting state EEG-fMRI in Evaluation of the Ability to Understand and want in Patients Affected by Dementias with Neuro-psychiatric Disorders and other Mental Disorders
No full textIntroduction: We strongly believe that rs-fMRI using independent component analysis (ICA) must be considered as a technique to be systematically used in the near future, as positron emission tomography (PET TC) is today. Unfortunately, this technique is not yet used in Italy because, despite the studies just summarized, it is considered “experimental” and not routine without reasonable justification!Aim of the Study: We present two cases studied with these techniques, after the informed consent obtained by the patients1) A young woman from Sicily, in whom an rs-fMRI revealed her severe personality disorder, was found capable of insight and strong-willed and was therefore found guilty by the criminal court of the murder of her young son, with a strange motive: rs-fMRI cannot be considered part of the assessment because it is so far considered experimental. PET-TAC was also classified as routine in Italy after a long legal discussion. We hope that all these studies, which are now summarized in this review, will be considered useful, at least in Europe, when a judge has to decide whether to sentence a person with psychological or psychiatric problems or to consider them as a person to be treated in a specific residential home (called REMS in Italy).2) Another woman from Bergamo, after having killed a neighbor of hers, was, instead, considered not guilty because of her inability to want to kill him, and so admitted to a particular structure (REMS: residence to execution of security measures) to treat her problem, front temporal dementia, with a severe neuropsychiatric disorder (NPS), diagnosed after the crimen was fulfilled.Conclusions: These two interesting cases demonstrate that in Italy nowadays, we do not have a homogeneous methodology to investigate the ability to understand and want, limiting the study only to personality tests. Here we describe new techniques that may help in this objective
Impact of Chronic Kidney Disease on Major Adverse Cardiac Events in Patients with Acute Myocardial Infarction: A Retrospective Cohort Study
No full textBackground: Acute Myocardial Infarction (AMI) results in a reduction in patients’ life expectancy. Different risk factors affect the risk of Major Adverse Cardiac Events (MACE). Although the role of kidney dysfunction in patients with Chronic Kidney Disease (CKD) in cardiac events has been identified, many patients with AMI are unaware of their underlying kidney disease. This study aimed to compare the incidence of adverse cardiovascular events and identify predictors of major adverse cardiovascular events in the medium term among patients with and without renal dysfunction following AMI. Methods: This retrospective cohort study was conducted on 1039 patients who were hospitalized for Acute Myocardial Infarction (AMI) between 2018 and 2019. The patient cohort comprised 314 women (mean age: 69.8 ± 13.2 years) and 725 men (mean age: 60.5 ± 13.8 years). Patient data were obtained from the registry of patients with acute myocardial infarction and the participants were followed up for a minimum of one year following hospital discharge to assess the incidence of MACE.Results: The study found that patients with a Glomerular Filtration Rate (GFR) level below 60 had a significantly higher mortality rate than those with a GFR level of 60 or above (15.7% vs. 3.5%,p < 0.0001). The multivariate analysis showed that Diabetes Mellitus (DM), GFR, and Non-ST Elevation Myocardial Infarction (NSTEMI) are significant risk factors for cardiovascular events. (p = 0.016, p = 0.015, p = 0.006 respectively), while variables such as sex, age, and Hypertension (HTN) were not significant risk factors. There was a negative correlation between GFR and death (0.241 - = r, p < 0.0001)Conclusion: This study highlights the importance of detecting kidney disease during an AMI and managing risk factors for cardiovascular disease to improve health outcomes and reduce the risk of mortality
Impact of Balanced Lifestyles on Childhood Development: A Study at Crèche
No full textIntroduction: In our fast-paced world, children’s dietary habits and behaviour are increasingly concerning, with a tendency toward indulging in sweets and snacks. Insights are derived from observations of 20 children at a crèche facility.Temptation of sweets: Children’s inherent attraction to sweet and salty snacks challenges maintaining a healthy diet. Excessive consumption can lead to health issues, recognizing the pivotal role parents and caregivers play in guiding children toward healthier choices.Significance of a balanced diet: A well-rounded and nutritious diet is crucial for a child’s physical and mental development. Providing fruits, vegetables, whole grains, and lean proteins is essential.Role of activities: Diversifying a child’s routine with engaging activities is a powerful strategy to redirect their focus from unhealthy snacks. Sports, arts, outdoor play, and educational games promote physical fitness, creativity, and cognitive development, contributing to a well-balanced lifestyle.Strategies for encouraging healthy choices:• Lead by example: Modelling healthy habits inspires children to adopt similar behaviour.• Educate about nutrition: Imparting knowledge about the nutritional value of foods equips children to make informed choices.• Make healthy options accessible: Stocking the kitchen with nutritious snacks makes it convenient for children to opt for healthier alternatives.• Limit unhealthy choices: Setting clear limits on sugary snacks helps children develop moderation and self-control.• Create a fun and active environment: Fostering an enjoyable environment involves family outings, games, and making exercise a natural part of daily life.Results: Encouraging results were observed among the 20 children. Two children, aged around 12, demonstrated awareness of healthy habits. Excluding these two, others showed positive changes in behaviour towards sweets and snacks through activities and counselling.Conclusion: Maintaining a balance between a child’s consumption of sweets and snacks and engaging in diverse activities is crucial for overall development. A combination of nutritious choices and engaging activities guides children toward a path of health and happines
Autoimmune Diseases Associated with Iron Deficiency Anemia; Coexistence of Demyelinating Disease and Inflammatory Bowel Disease
No full textIn a young patient with iron deficiency anemia and low hemoglobin levels, we identified a very rare association: Demyelinating disease with Inflammatory Bowel Disease (IBD)
Pediatric Dysgerminoma: Unveiling a Rare Ovarian Tumor
No full textBackground: Dysgerminomas, account for only 1% - 2% of all malignant ovarian neoplasms.Objective: This case report aims to present a rare occurrence of dysgerminoma in a pediatric patient, highlighting the clinical characteristics, diagnosis, and management.Case presentation: We present a case of dysgerminoma in a 12-year-old girl who presented with a three-week history of pelvic pain and progressive abdominal swelling. Physical examination revealed a distended abdomen with evident suprapubic fullness, and a palpable abdominopelvic mass measuring approximately 20 weeks in size. Imaging studies confirmed the presence of a solid heterogeneous mass originating from the pelvis. The patient underwent a right salpingo-oophorectomy without complications. Histological examination coupled with an immunohistochemical study confirmed the diagnosis of dysgerminoma. The patient had an uneventful postoperative course and was discharged without adjuvant treatment. Regular follow-up visits, physical examinations, ultrasound scans, and lactate dehydrogenase assays were initiated for monitoring. Conclusion: Prompt recognition and appropriate surgical intervention, followed by regular monitoring, are crucial for optimal outcomes in pediatric dysgerminoma cases