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Physical training improves arterial baroreflex sensitivity in neurally mediated syncope patients and could be applied as a non-pharmacological therapeutic alternative for these patients.

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| Introduction: The unplanned extubation (UE) is the withdrawal, unplanned and unintentional use of the ventilatory device during the patient's hospitalizations period. Aim: To characterize cases of UE in a network of Federal University Hospitals (FUH). Methodology: Cross-sectional, retrospective, quantitative study conducted in a FUH network. A total of 404 UE notifications were analyzed in a period from January 1 to December 31, 2016. We analyzed: classifications of notifications; age; sex; race/color; intubations pathway; locations of the incident; types of manifestations; possible causes; concurrent procedures; damage caused; shift of occurrence; training of notifiers and conduct adopted. The data is placed in Microsoft Excel worksheet for analysis and interpretation.Results: In 2016 there were 404 notifications concerning UE. 65% were not classified as Urgent or Alert. Characteristics of the patients: 53% aged less than 1 year old, 57% male and 46% White. Characteristics of the incidents: 99% of the intubation routes were orotracheal; occurred predominantly in the Adult ICU (53%); in 62% there was displacement of the tube; the most cited cause was the age less than 1-year-old (37%). In 80% of notifications, there were no concomitant procedure; 72% were considered non-serious and 44% were on the night shift. Notifiers 76% were nurses. Conduct: the main conduct adopted was the reintubations of the patient.Conclusion: The study characterized the cases of UE reported in the FUH network, emphasizing the importance of investing in preventive actions to avoid the occurrence of these incidente.

Background. Food frequency questionnaires are used to assess dietary intake in epidemiological studies. Objective. The aim of the study was to assess the relative validity and reproducibility of a quantitative food frequency questionnaire (QFFQ) for adolescents with type 1 diabetes. Methods: Validity was evaluated by comparing the data generated by QFFQs to those of 24-hour recalls (24 hrs). QFFQs were applied twice per patient to assess reproducibility. Statistical analysis included performing t-tests, obtaining Pearson correlation coefficients when necessary, correcting measurements for randomness by the weighted kappa method, calculating intraclass correlation coefficients, and generating Bland-Altman plots (P < 0,05). Results. The total energy and nutrient intake as estimated by the QFFQs were significantly higher than those from 24 hrs. Pearson correlation coefficients for energy-adjusted, deattenuated data ranged from 0.32 (protein) to 0.75 (lipid, unsaturated fat and calcium). Weighted kappa values ranged from 0.15 (vitamin C) to 0.45 (calcium). Bland-Altman plots indicated acceptable validity. As for reproducibility, intraclass correlation coefficients ranged from 0.24 (calcium) to 0.65 (lipid), and the Bland-Altman plots showed good agreement between the two questionnaires. Conclusion: The QFFQ presented an acceptable ability to classify correctly and with good reproducibility, adolescents with type 1 diabetes according to their levels of dietary intake.