Spontaneous Breathing in Early Acute Respiratory Distress Syndrome: Insights From the Large Observational Study to UNderstand the Global Impact of Severe Acute Respiratory FailurE Study

OBJECTIVES: To describe the characteristics and outcomes of patients with acute respiratory distress syndrome with or without spontaneous breathing and to investigate whether the effects of spontaneous breathing on outcome depend on acute respiratory distress syndrome severity. DESIGN: Planned secondary analysis of a prospective, observational, multicentre cohort study. SETTING: International sample of 459 ICUs from 50 countries. PATIENTS: Patients with acute respiratory distress syndrome and at least 2 days of invasive mechanical ventilation and available data for the mode of mechanical ventilation and respiratory rate for the 2 first days. INTERVENTIONS: Analysis of patients with and without spontaneous breathing, defined by the mode of mechanical ventilation and by actual respiratory rate compared with set respiratory rate during the first 48 hours of mechanical ventilation. MEASUREMENTS AND MAIN RESULTS: Spontaneous breathing was present in 67% of patients with mild acute respiratory distress syndrome, 58% of patients with moderate acute respiratory distress syndrome, and 46% of patients with severe acute respiratory distress syndrome. Patients with spontaneous breathing were older and had lower acute respiratory distress syndrome severity, Sequential Organ Failure Assessment scores, ICU and hospital mortality, and were less likely to be diagnosed with acute respiratory distress syndrome by clinicians. In adjusted analysis, spontaneous breathing during the first 2 days was not associated with an effect on ICU or hospital mortality (33% vs 37%; odds ratio, 1.18 [0.92-1.51]; p = 0.19 and 37% vs 41%; odds ratio, 1.18 [0.93-1.50]; p = 0.196, respectively ). Spontaneous breathing was associated with increased ventilator-free days (13 [0-22] vs 8 [0-20]; p = 0.014) and shorter duration of ICU stay (11 [6-20] vs 12 [7-22]; p = 0.04). CONCLUSIONS: Spontaneous breathing is common in patients with acute respiratory distress syndrome during the first 48 hours of mechanical ventilation. Spontaneous breathing is not associated with worse outcomes and may hasten liberation from the ventilator and from ICU. Although these results support the use of spontaneous breathing in patients with acute respiratory distress syndrome independent of acute respiratory distress syndrome severity, the use of controlled ventilation indicates a bias toward use in patients with higher disease severity. In addition, because the lack of reliable data on inspiratory effort in our study, prospective studies incorporating the magnitude of inspiratory effort and adjusting for all potential severity confounders are required

Identifying associations between diabetes and acute respiratory distress syndrome in patients with acute hypoxemic respiratory failure: an analysis of the LUNG SAFE database

Background: Diabetes mellitus is a common co-existing disease in the critically ill. Diabetes mellitus may reduce the risk of acute respiratory distress syndrome (ARDS), but data from previous studies are conflicting. The objective of this study was to evaluate associations between pre-existing diabetes mellitus and ARDS in critically ill patients with acute hypoxemic respiratory failure (AHRF). Methods: An ancillary analysis of a global, multi-centre prospective observational study (LUNG SAFE) was undertaken. LUNG SAFE evaluated all patients admitted to an intensive care unit (ICU) over a 4-week period, that required mechanical ventilation and met AHRF criteria. Patients who had their AHRF fully explained by cardiac failure were excluded. Important clinical characteristics were included in a stepwise selection approach (forward and backward selection combined with a significance level of 0.05) to identify a set of independent variables associated with having ARDS at any time, developing ARDS (defined as ARDS occurring after day 2 from meeting AHRF criteria) and with hospital mortality. Furthermore, propensity score analysis was undertaken to account for the differences in baseline characteristics between patients with and without diabetes mellitus, and the association between diabetes mellitus and outcomes of interest was assessed on matched samples. Results: Of the 4107 patients with AHRF included in this study, 3022 (73.6%) patients fulfilled ARDS criteria at admission or developed ARDS during their ICU stay. Diabetes mellitus was a pre-existing co-morbidity in 913 patients (22.2% of patients with AHRF). In multivariable analysis, there was no association between diabetes mellitus and having ARDS (OR 0.93 (0.78-1.11); p = 0.39), developing ARDS late (OR 0.79 (0.54-1.15); p = 0.22), or hospital mortality in patients with ARDS (1.15 (0.93-1.42); p = 0.19). In a matched sample of patients, there was no association between diabetes mellitus and outcomes of interest. Conclusions: In a large, global observational study of patients with AHRF, no association was found between diabetes mellitus and having ARDS, developing ARDS, or outcomes from ARDS. Trial registration: NCT02010073. Registered on 12 December 2013

The relationship of the uvula with snoring and obstructive sleep apnea: a systematic review

Currently, the relationship between uvula size and sleep-disordered breathing (snoring and obstructive sleep apnea) lacks data for objective interpretation. This study conducted a systematic review of the international literature for research describing the measurable characteristics of the uvula (i.e., size, length, width) and any association with snoring and obstructive sleep apnea (OSA). PubMED, Scopus, Google Scholar, Embase, and the Cochrane Library were each systematically searched from inception through November 15, 2016. We screened 1037 titles and abstracts. We conducted a full review of 54 downloaded articles. Sixteen articles met inclusion and exclusion criteria. The 16 studies included a total of 2604 patients. The selected articles included data and information for (1) normative data for uvular size in the control groups, (2) snoring and uvula size, (3) OSA and uvula size, and (4) overall uvula function. Our review noted variability in findings; however, in general, a uvular length >15 mm was considered elongated and a uvular width >10 mm was considered to be wide. The studies included in this systematic review reveal a relationship between uvula size, snoring, and OSA. Further, larger uvulas appear associated with more severe snoring and OSA. The direct correlation between uvula size and its relationship specifically to snoring and OSA remain as topics for future prospective research

Tradução e adaptação transcultural para o português brasileiro da Scale for Quality of Sexual Function (QSF) Translation and cross-cultural adaptation into Brazilian Portuguese of the Scale for Quality of Sexual Function (QSF)

INTRODUÇÃO: Apesar do papel fundamental da função sexual na qualidade de vida da população, há uma escassez na literatura brasileira de instrumentos específicos para sua avaliação e que possam ser utilizados tanto para homens quanto para mulheres. A adaptação da Scale for Quality of Sexual Function (QSF), uma escala unissex, é um passo importante na obtenção de instrumentos que permitam a comparação de resultados entre diferentes populações. OBJETIVO: Descrever o processo de tradução e adaptação semântica da QSF para o português brasileiro. MÉTODOS: A adaptação do instrumento envolveu cinco fases: 1) duas traduções independentes, 2) uma versão de consenso realizada por tradutores e especialistas, 3) avaliação da versão gerada por mais um especialista que não participou das etapas anteriores, 4) retrotradução com avaliação do autor da escala original e, por fim, 5) aplicação da versão obtida em um grupo experimental. RESULTADOS: São descritas todas as etapas de adaptação do instrumento. A participação de especialistas tanto da área de saúde mental quanto de sexualidade humana, desde a primeira fase do processo, contribuiu para discussões amplas, que permitiram a melhor adequação dos itens, tanto conceitual quanto culturalmente. Participaram da aplicação experimental sujeitos de diferentes níveis de escolaridade de ambos os sexos, não sendo detectadas dificuldades na compreensão dos itens. CONCLUSÃO: Por meio dos procedimentos adotados, foi possível elaborar uma versão da QSF em português brasileiro.<br>INTRODUCTION: Despite the important role played by sexual function in quality of life, there is a scarcity of instruments in the Brazilian literature specifically designed to assess this aspect, and especially of instruments that can be used with both men and women. The adaptation of the Scale for Quality of Sexual Function (QSF), a unisex scale, is an important step in the production of instruments that allow to compare results obtained in different populations. OBJECTIVE: To describe the translation and semantic adaptation of the QSF into Brazilian Portuguese. METHODS: Instrument adaptation involved five phases: 1) two independent translations, 2) a consensual version produced by translators and experts, 3) evaluation of this version by a different expert, not involved in the previous phases, 4) back translation with evaluation by the author of the original scale, and, finally, 5) application of the final Brazilian Portuguese version in a experimental group. RESULTS: All stages of the adaptation process are described. The participation of experts from the fields of both mental health and human sexuality since the first stage of the process contributed to broader discussions, which allowed to achieve the best possible adequacy for each item, both conceptually and culturally. The experimental application of the final, adapted version of the scale involved both men and women with different educational backgrounds and levels. No difficulties were faced by this group in understanding the items included in the scale. CONCLUSION: The procedures and process herein described successfully allowed to develop a Brazilian Portuguese version of the QSF