208 research outputs found
Assessing osteoporosis in the young adult
Osteoporosis in the young adult is a relatively rare phenomenon, and its diagnosis needs careful assessment of the affected person. The emphasis in the assessment of bone health is gradually shifting from a simple quantitative assessment of bone mineral density to one that includes bone quality. This may be particularly important in the young adult, where the aetiological cause of osteoporosis may be a primary genetic condition or secondary to another chronic condition
Treating cancer with heat: Hyperthermia as promising strategy to enhance apoptosis
The fundamental idea and the effects of heat on cancer cells are well known. However, the results obtained in therapy by hyperthermia (HT) alone have been only partially satisfactory. Treatment at temperatures between .40 and 44 degrees C is cytotoxic for cells in an environment with a low oxygen partial pressure and low pH, conditions that are found specifically within tumour tissue, due to insufficient blood perfusion. Under such conditions radiotherapy is less effective, and systemically applied cytotoxic agents will reach such areas in lower concentrations than in well-perfused areas. Therefore, clinically, it is preferred to use hyperthermia in combination with radiation therapy and chemotherapy. Hyperthermia can be applied by several methods: local hyperthermia by external or internal energy sources; regional hyperthermia by perfusion of organs or limbs, or by irrigation of body cavities; and whole-body hyperthermia. Number of studies have reported the combination of thermo-radiotherapy. Consequently, much attention has been focussed on identifying agents among the conventional chemotherapeutic substances that can sensitise tumour cells to hyperthermia-induced damage with minimal effects on normal cells. In this review, we overviewed important mechanisms of hyperthermia-induced apoptosis and the substances which can act as heat sensitisers in cancer therapy
Virtual networks for exchanging information and biomaterials: future directions
Clinical and research networks for rare conditions are increasingly common nowadays. Given the rarity of many such conditions, there is a need to cover more conditions, yet there is also a need to sustain and improve the quality and effectiveness of existing networks. This review will discuss the qualities that are required by a virtual network using some international clinical and research networks that are currently active in the field of rare endocrine conditions affecting sex and adrenal development as exemplars
Quality assurance audit in adult cardiac anaesthesia
Objective: To assess different anaesthesia-related quality indicators during adult cardiac surgery.Methods: The prospective clinical audit was conducted at the Aga Khan University Hospital, Karachi, from October 2016 to March 2017, and comprised all adult patients scheduled for cardiac surgery. Different anaesthesia-related quality indicators were observed during the pre-induction phase, before the cardiopulmonary bypass, during the procedure, and post-surgery till the transfer from the operating room to the cardiac intensive care unit. Data was analysed using SPSS 19.Results: Of the 264 patients, 217(82.2%) had complete record; 160(73.7%) males and 57(26.3%) females. The overall mean age was 56.56±12.46 years. In the pre-induction phase, difficult intravenous and invasive line access was seen in 42(19.3%) patients. Inappropriate information in the preoperative form was found in 6(2.8%) patients, and preoperative drugs for anxiolysis were used in 145(66.8%) patients. Haemodynamic issues were significant during the surgery in 15(6.9%) patients. In the post-surgery period, abnormal activated clotting time was found in 17(7.8%) patients, while monitoring problems were faced in 7(3.2%) cases during transfer to cardiac intensive care unit.Conclusions: It will help to develop quality improvement policies to enhance patient safety, satisfaction and better outcome
A Comprehensive Review on Impact of Machining Parameters on MRR and SR
The electrical discharge machining (EDM) process is a non-conventional machining process that is utilized to create high caliber and exact dimension items. This machining (EDM) is used to machine the smallest to complex geometrical shapes. Thermal energy helps to evaporate and melt the material from a work piece. Circulation of dielectric fluid removes out the debris from working zone and maintains the stability of machining process. EDM process is generally used for machining with different applications such as automobile, aircraft, aerospace, tools and dies, etc. This paper provides a review on the effect of different input parameters of EDM such as current, pulse off time, pulse on time, etc. on material removal rate (MRR) and surface roughness (SR)
Childhood-onset growth hormone deficiency and the transition to adulthood: current perspective
Childhood-onset growth hormone deficiency (CO-GHD) is an endocrine condition associated with a broad range of health issues from childhood through to adulthood, which requires particular attention during the transition period from adolescence to young adulthood. There is uncertainty in the clinical practice of the management of CO-GHD during transition regarding the clinical assessment and management of individual patients during and after transition to obtain optimal follow-up and improved health outcomes. Despite the availability of clinical guidelines providing the framework for transition of young adults with CO-GHD, there remains substantial variation in approaching transitional care among pediatric and adult services. A well-structured and coordinated transitional plan with clear communication and direct collaboration between pediatric and adult health care to ensure optimal management of adolescents with CO-GHD during transition is needed
Assessing osteoporosis in the young adult
Osteoporosis in the young adult is a relatively rare phenomenon, and its diagnosis needs careful assessment of the affected person. The emphasis in the assessment of bone health is gradually shifting from a simple quantitative assessment of bone mineral density to one that includes bone quality. This may be particularly important in the young adult, where the aetiological cause of osteoporosis may be a primary genetic condition or secondary to another chronic condition
Prevalence of vertebral fractures in children with suspected osteoporosis
Objectives:
To explore the prevalence and anatomic distribution of vertebral fractures in disease groups investigated for primary and secondary osteoporosis, using vertebral fracture assessment (VFA).
Study design:
VFA was performed independently by 2 nonradiologists, in 165 children (77 males, 88 females) as part of their investigation for osteoporosis. Vertebral bodies from T6 to L4 were assessed for vertebral fractures using the Genant scoring system. The common readings for the presence of vertebral fractures were used for evaluating the prevalence and anatomic distribution of vertebral fractures.
Results:
The median age of the subjects was 13.4 years (range, 3.6, 18). Of the 165 children, 24 (15%) were being investigated for primary bone disease, and the remainder had a range of chronic diseases known to affect bone health. Vertebral fractures were identified in 38 (23%) children. The distribution of the vertebral fractures was bimodal, with vertebral fractures peaks centered at T9 and L4. Conditions associated with increased odds for vertebral fractures were inflammatory bowel disease (OR, 3.3; 95% CI, 1.4, 8.0; P = .018) and osteogenesis imperfecta (OR, 2.3; 95% CI, 1.04, 5.8; P = .022). Among children with vertebral fractures, those with Duchenne muscular dystrophy (P = .015) and osteogenesis imperfecta (P = .023) demonstrated higher number of vertebral fractures than the other disease groups.
Conclusions:
VFA identified the presence of vertebral fractures, in a bimodal distribution, in both primary bone disease and chronic disease groups. VFA is a practical screening tool for identification of vertebral fractures in children and adolescents at risk of fragility fractures
Genetic testing of XY newborns with a suspected disorder of sex development
Purpose of review: The current review focuses on the neonatal presentation of disorders of sex development, summarize the current approach to the evaluation of newborns and describes recent advances in understanding of underlying genetic aetiology of these conditions.
Recent findings: Several possible candidate genes as well as other adverse environmental factors have been described as contributing to several clinical subgroups of 46,XY DSDs. Moreover, registry-based studies showed that infants with suspected DSD may have extragenital anomalies and in 46,XY cases, being small for gestational age (SGA), cardiac and neurological malformations are the commonest concomitant conditions.
Summary: Considering that children and adults with DSD may be at risk of several comorbidities a clear aetiological diagnosis will guide further management. To date, a firm diagnosis is not reached in over half of the cases of 46,XY DSD. Whilst it is likely that improved diagnostic resources will bridge this gap in the future, the next challenge to the clinical community will be to show that such advances will result in an improvement in clinical care
The evaluation and management of the boy with DSD
Atypical genitalia in a boy may have a very wide and diverse aetiology and a definitive diagnosis is often challenging to reach. Detailed clinical evaluation integrated with extensive biochemical and genetic studies play an important role in this process. Such care should be undertaken in highly specialized centres that can also provide access to a multidisciplinary team for optimal long-term care
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