Respiratory care
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The precision of quasi-static airway driving pressure (ΔP) assessed in pressure support ventilation (PSV) as a surrogate of tidal lung stress is debatable because persistent muscular activity frequently alters the readability of end-inspiratory holds. In this study, we used strict criteria to discard excessive muscular activity during holds and assessed the accuracy of ΔP in predicting global lung stress in PSV. Additionally, we explored whether the physiological effects of high PEEP differed according to the response of respiratory system compliance (CRS). ⋯ In subjects with ARDS undergoing PSV, high ΔP assessed by readable end-inspiratory holds accurately detected potentially dangerous thresholds of ΔPL. Using ΔP to assess changes in CRS induced by PEEP during assisted ventilation may inform whether higher PEEP could be beneficial.
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Both nasal obstruction and sleep disturbance are common in patients with cystic fibrosis (CF). In patients with obstructive sleep apnea (OSA), studies suggest that these conditions are related and that nasal congestion improves with CPAP therapy. We hypothesized that subjects admitted to hospital for therapy of an exacerbation of CF would have both nasal symptoms and sleep disturbance and that these would improve with the initiation of nocturnal high-flow nasal cannula therapy (HFNC). ⋯ Similar to what has been reported in older subjects with OSA, nocturnal HFNC improves sinonasal symptoms in subjects with an exacerbation of CF. There was no measurable effect on sleep quality, which may be due to the short duration of the study, or to subjects being evaluated while being treated in a hospital setting.
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Electronic nicotine delivery systems (ENDS) continue to be popular among young adults. These devices are often advertised as a healthy alternative to quitting tobacco cigarettes. However, young adults represent a population who view it as a novel behavior that provides a sense of popularity, social acceptance, and desired physiologic properties. The objective of this study was to examine characteristics of vaping behavior among college students and explore possible associations between groups of vaping behavior (stopped, initiated, increased, decreased, stayed the same). ⋯ ENDS products continue to yield very high levels of nicotine creating addiction in young adults. Addiction counseling and evidenced-based practices should be employed at every level (individual, community, and school). Additionally, mental health counseling for students in pandemic and high-stress environments may help to combat stress in a more proactive manner than self-medicating.
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The 20-m 6-min-walk test (6MWT20) is a valid, reliable alternative for functional capacity assessment; however, its responsiveness and minimally important difference (MID) have yet to be investigated. The aim of this study was to assess the responsiveness and MID of the 6MWT20 in individuals with COPD. ⋯ The 6MWT20 is responsive to PR, and the MID for the test is 20 m (17-47 m).
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Presenting research at scientific meetings is an important part of the dissemination of research findings. Abstracts are an abbreviated form of a research study presented at a meeting of a professional society. ⋯ Each section should be carefully written to maximize the chances of acceptance. This paper will cover how to write an abstract for a presentation at a scientific meeting and common mistakes that authors make when writing abstracts.