Articles: mechanical-ventilation.
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Intensive care medicine · Jul 2017
Multicenter StudyThe impact of disability in survivors of critical illness.
To use the World Health Organisation's International Classification of Functioning to measure disability following critical illness using patient-reported outcomes. ⋯ Disability measured using patient-reported outcomes was prevalent at 6 months after critical illness in survivors and was associated with reduced health-related quality of life. Predictors of moderate or severe disability included a prior history of anxiety or depression, separation or divorce and a longer duration of mechanical ventilation.
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Nursing in critical care · Jul 2017
Nursing patients with chronic critical illness and their families: a qualitative study.
chronic critical illness (CCI) is a complex syndrome with a high risk of dying in hospital. Intensive care unit nurses are well-positioned to lead conversations integrating palliative and end-of-life care, yet have reported limited involvement. ⋯ Internal tension, as experienced by participants reflects the challenges of transition from acute to palliation and end-of-life care, made more complex in CCI, because of its poorly defined terminal stage. Nurses' ability to manage the complex process of supporting hope while gradually providing information to build family understanding of CCI highlights their central role in facilitating what and how prognostic information is given, while managing the emotional implications and family response. To better support nurses do this, we advocate for formal structures enabling nurses to participate in decision-making regarding timing of transitions using palliation and end-of-life care.
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The positive end-expiratory pressure (PEEP), since its introduction in the treatment of acute respiratory failure, up to the 1980s was uniquely aimed to provide a viable oxygenation. Since the first application, a large debate about the criteria for selecting the PEEP levels arose within the scientific community. Lung mechanics, oxygen transport, venous admixture thresholds were all proposed, leading to PEEP recommendations from 5 up to 25 cmH2O. ⋯ In fact, all the other methods estimate as recruitment the gas entry in pulmonary units already open at lower PEEP, but increasing their compliance at higher PEEP. Since higher PEEP is usually more indicated (also for oxygenation) when the recruitability is higher, as occurs with increasing severity, a meaningful PEEP selection requires the assessment of recruitment. The Berlin definition may help in this assessment.
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Several factors have been recognized as possible triggers of ventilator-induced lung injury (VILI). The first is pressure (thus the 'barotrauma'), then the volume (hence the 'volutrauma'), finally the cyclic opening-closing of the lung units ('atelectrauma'). Less attention has been paid to the respiratory rate and the flow, although both theoretical considerations and experimental evidence attribute them a significant role in the generation of VILI. ⋯ For the same elastance driving pressure is a predictor similar to plateau pressure or tidal volume. Driving pressure is one of the components of the mechanical power, which also includes respiratory rate, flow and PEEP. Finding the threshold for mechanical power would greatly simplify assessment and prevention of VILI.
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Comparative Study
Comparison of Cisatracurium Versus Atracurium in Early ARDS.
Administration of cisatracurium in severe ARDS decreases in-hospital mortality. Whether clinical outcomes are cisatracurium-specific or related with all neuromuscular blockers is unknown. This study aimed to compare outcomes in severe ARDS patients treated with cisatracurium versus atracurium. ⋯ Seventy-six subjects with ARDS were included in the study. Eighteen subjects (24%) were treated with atracurium, whereas 58 (76%) were treated with cisatracurium. Equivalent dosages of sedation and analgesia as well as use of brain function monitoring technology were similar between both groups. There were no differences in clinical outcomes. Specifically, improvement of PaO2 /FIO2 was a median (interquartile range [IQR]) of 65 (25-162) in the atracurium group and 66 (IQR 16-147) in the cisatracurium group (P = .65). Ventilator-free days at day 28 were 13 d (IQR 0-22 d) and 15 d (IQR 8-21 d) in the atracurium and cisatracurium groups, respectively (P = .72). ICU length or stay was 18 d (IQR 8-34 d) in the atracurium group and 15 d (IQR 9-22 d) in the cisatracurium group (P = .34). In-hospital mortality was 50% for the atracurium population and 62% for the cisatracurium group (P = .42) CONCLUSIONS: Among subjects with early severe ARDS, the utilization of atracurium versus cisatracurium within 72 h of admission was not associated with significant differences in clinical outcomes.