Articles: ninos.
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Implantable pulse generators and defibrillators have traditionally been considered contraindications to MRI. However, recent data have challenged this paradigm and demonstrated that patients with newer generation devices can safely undergo MRI, including cardiac MRI, provided basic precautions are taken. Indeed, the introduction of MRI conditional systems has led to a conceptual shift in clinical decision making-'can this patient undergo MRI safely?' is being superseded by 'should this patient be implanted with an MRI conditional device?'. This review outlines the risks associated with MRI in patients with implanted cardiac devices, and discusses practical measures to minimise risks and facilitate safe and diagnostic scanning.
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To compare a limited array of chewing-stimulated saliva features (salivary flow, pH and buffer capacity) in a sample of elderly Mexicans with clinical, sociodemographic and socio-economic variables. ⋯ These exploratory data add to the body of knowledge with regard to chewing-stimulated salivary features (salivary flow rate, pH and buffer capacity) and outline the variability of those features across selected sociodemographic, socio-economic and behavioural variables in a group of Mexican elders.
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To determine the clinical factors associated with the length of hospitalization and mortality in patients with sickle cell disease (SCD). ⋯ Sickle cell disease still carries a high morbidity and mortality in patients admitted to hospital. Recurrent admissions are a concern, as they impact on patient's morbidity and quality of life.
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The relevance of basic sciences in medical education has been recognized for centuries, and the importance of exposing medical students to science was acknowledged and reinforced by the recommendations of Flexner in 1910. Since then, traditional medical education has been divided into preclinical and clinical subjects; within this scheme, the first terms of undergraduate medical education usually concentrate on basic sciences, while subsequent ones focus on clinical sciences and clinical training. ⋯ The removal of basic science subjects from the medical curriculum is paradoxical because nowadays the value of biomedical knowledge and the scientific reasoning to make medical decisions is more appreciated than ever. To maintain its relevance in medical education, basic sciences have to confront three challenges: a) increasing its presence in clinical education; b) developing nuclear programs; and c) renewing laboratory instruction.