Respiratory care
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Oxygen therapy via high-flow nasal cannula generates physiologic changes that impact ventilatory variables of patients. However, we know that there are detrimental effects on airway mucosa related to inhalation of gases. The objective of this study was to evaluate the performance in terms of absolute humidity, relative humidity, and temperature of different brands of heated humidifiers and circuits in the invasive mode during the use of high-flow oxygen therapy in flows between 30 and 100 L/min. ⋯ When heated humidifiers were used in the invasive mode for high-flow oxygen therapy, absolute humidity depended not only on the heated humidifiers and the combination of circuits but also on the programmed flow, especially at flows > 50 L/min. Moreover, the heated humidifiers exhibited different behaviors, in some cases inefficient, in delivering adequate humidification. However, some equipment improved performance when set to the invasive mode.
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Given the long ventilation times of patients with COVID-19 that can cause atrophy and contractile weakness of respiratory muscle fibers, assessment of changes at the bedside would be interesting. As such, the aim of this study was to determine the evolution of respiratory muscle thickness assessed by ultrasound. ⋯ In ventilated subjects with COVID-19, overall no change in diaphragm thickness was observed. Subjects with decreased or unchanged thickness had a longer ventilation time than those with increased thickness. NMBA use was associated with decreased thickness. Rectus muscle thickness did not change over time, whereas lateral abdominal muscle thickness decreased but this change was not statistically significant.
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Nebulized therapies form an important component of treatment in people with cystic fibrosis (CF). It is important for people with CF to continue to take their nebulized medications when traveling. ⋯ This study identified that nebulizer care and hygiene are less than optimal when traveling as well as identifying a worrying trend of taking a "nebulizer vacation." People with CF need to be aware of risks to their health in being nonadherent with their nebulized medication(s) while traveling as well as risks of acquiring a new pathogen through suboptimal cleaning/disinfection/drying management of their nebulizer. CF multidisciplinary teams should emphasize the importance of sustaining nebulized treatments when traveling and practicing effective nebulizer washing, disinfection, and drying procedures.
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Driving pressure (ΔP) and mechanical power (MP) may be important mediators of lung injury in acute respiratory distress syndrome (ARDS) however there is little evidence for strategies directed at lowering these parameters. We applied predictive modeling to estimate the effects of modifying ventilator parameters on ΔP and MP. ⋯ This novel conditional modeling confirmed expected response patterns for ΔP, with the response to adjustments depending on patients' lung mechanics. Furthermore a VT -driven approach should be favored over a f -driven approach when aiming to reduce MP.
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New graduate respiratory therapists (RTs), regardless of the degree program, receive limited preparation in neonatal/pediatric diseases and management. Experienced RTs typically have adult knowledge but limited exposure to pediatrics. We developed a program that included competence-based simulation to improve orientation success. ⋯ The use of a competence-based orientation program showed educational advancements and helped determine successful orientation completion.