Respiratory care
-
A 2005 consensus conference led by the National Association for Medical Direction of Respiratory Care (NAMDRC) defined prolonged mechanical ventilation (PMV) for adults as invasive and/or noninvasive mechanical ventilation (NIV) for ≥ 21 consecutive days for ≥ 6 h/d. In children, no such consensus definition exists. This results in substantial variability in definitional criteria, making study of the impact and outcomes of PMV across and within settings problematic. The objective of this work was to identify how PMV for children and neonates is described in the literature and to outline pediatric/neonatal considerations related to PMV, with the goal of proposing a pediatric/neonatal adaptation to the NAMDRC definition. ⋯ Therefore, we developed the following recommendations for the pediatric PMV definition: ≥ 21 consecutive days (after 37 weeks postmenstrual age) of ventilation for ≥ 6 h/d considering invasive ventilation and NIV and including short interruptions (< 48 h) of ventilation during the weaning process as the same episode of ventilation. We propose a definition of pediatric PMV that incorporates the number of consecutive days of mechanical ventilation while taking into account use of NIV and lung maturity and including short interruptions during the weaning process.
-
Volume-targeted ventilation is increasingly used in low birthweight infants because of the potential for reducing volutrauma and avoiding hypocapnea. However, it is not known what level of air leak is acceptable during neonatal volume-targeted ventilation when leak compensation is activated concurrently. ⋯ The PB980 and V500 were the only ventilators to acclimate to all leak scenarios and achieve targeted VT. Further clinical investigation is needed to validate the use of leak compensation during neonatal volume-targeted ventilation.
-
The population of children receiving long-term mechanical ventilation is growing worldwide, but only limited data exist in Asian regions. The objective of the study was to review the management of these children in Hong Kong over the past 2 decades. ⋯ Our study showed a steady growth in the number of children receiving long-term mechanical ventilation, similar to that in western countries, yet these children have distinct demographic characteristics, underlying diseases, comorbidities, and outcomes. Home care is feasible in the majority of these children despite a lack of in-home nursing care provision. Prolonged survival of these subjects necessitates the enhancement of transitional care to adult service.
-
Review Meta Analysis Comparative Study
High-Flow Nasal Cannula in Critically Ill Subjects With or at Risk for Respiratory Failure: A Systematic Review and Meta-Analysis.
High-flow nasal cannula (HFNC) oxygen delivery has been gaining attention as an alternative means of respiratory support for critically ill patients, with recent studies suggesting equivalent outcomes when compared with other forms of oxygen therapy delivery. The main objective of this review was to extract current data about the efficacy of HFNC in critically ill subjects with or at risk for respiratory failure. We performed a systematic review of publications (from database inception to October 2015) that evaluated HFNC in critically ill subjects with or at risk for acute respiratory failure and performed a meta-analysis comparing HFNC with noninvasive ventilation (NIV) and with standard oxygen therapy regarding major outcomes: incidence of invasive mechanical ventilation and ICU mortality. ⋯ Additionally, HFNC use did not reduce ICU mortality compared with NIV (OR 0.72, 95% CI 0.23-2.21, P = .56) or with standard oxygen therapy (OR 0.69, 95% CI 0.33-1.42, P = .29). There was a trend toward better oxygenation compared with conventional oxygen therapy but a worse gas exchange compared with NIV. At this moment, HFNC therapy seems not to be superior to conventional oxygen therapy or NIV in terms of invasive mechanical ventilation rate or ICU mortality in critical illness, but new studies are needed to determine whether HFNC is associated with any difference in major outcomes when compared with other techniques.
-
Randomized Controlled Trial Comparative Study
Comparing the Effects of Two Different Levels of Hyperoxygenation on Gas Exchange During Open Endotracheal Suctioning: A Randomized Crossover Study.
Endotracheal suctioning is required for mechanically ventilated patients to maintain a patent airway. Studies show that open endotracheal suctioning affects respiratory mechanics and gas exchange. The aim of this study was to compare the effectiveness of hyperoxygenation with FIO2 + 0.20 above baseline and hyperoxygenation with FIO2 1.0 in preventing hypoxemia, and to determine the impact of open endotracheal suctioning on the pulmonary ventilation of critical subjects receiving mechanical ventilatory support. ⋯ In mechanically ventilated adult subjects, hyperoxygenation with FIO2 + 0.20 above baseline prevents hypoxemia. Also, transient changes in pulmonary ventilation with open circuit suctioning were confirmed by volumetric capnography analysis. (Trial registration: ClinicalTrials.gov NCT02440919).