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  • Seated and semi-recumbent positioning of the ventilated intensive care patient - Effect on gas exchange, respiratory mechanics and hemodynamics

    Author(s)
    Thomas, Peter
    Paratz, Jennifer D.
    Lipman, Jeffrey
    Griffith University Author(s)
    Paratz, Jenny D.
    Year published
    2014
    Metadata
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    Abstract
    Objectives To compare the effect of semi-recumbent and sitting positions on gas exchange, respiratory mechanics and hemodynamics in patients weaning from mechanical ventilation. Background Upright positions are encouraged during rehabilitation of the critically ill but there effects have not been well described. Methods A prospective, randomized, cross-over trial was conducted. Subjects were passively mobilized from supine into a seated position (out of bed) and from supine to a semi-recumbent position (>45ࠢackrest elevation in bed). Arterial blood gas (PaO2/FiO2, PaO2, SaO2, PaCO2 and A-a gradient), respiratory mechanics ...
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    Objectives To compare the effect of semi-recumbent and sitting positions on gas exchange, respiratory mechanics and hemodynamics in patients weaning from mechanical ventilation. Background Upright positions are encouraged during rehabilitation of the critically ill but there effects have not been well described. Methods A prospective, randomized, cross-over trial was conducted. Subjects were passively mobilized from supine into a seated position (out of bed) and from supine to a semi-recumbent position (>45ࠢackrest elevation in bed). Arterial blood gas (PaO2/FiO2, PaO2, SaO2, PaCO2 and A-a gradient), respiratory mechanics (VE,VT, RR, Cdyn, RR/VT) and hemodynamic measurements (HR, MABP) were collected in supine and at 5 min and 30 min after re-positioning. Results Thirty-four intubated and ventilated subjects were enrolled. The angle of backrest inclination in sitting (67 ᠵ੠was greater than gained with semi-recumbent positioning (50 ᠵଠp < 0.001). There were no clinically important changes in arterial blood gas, respiratory mechanic or hemodynamic values due to either position. Conclusions Neither position resulted in significant changes in respiratory and hemodynamic parameters. Both positions can be applied safely in patients being weaned from ventilation.
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    Journal Title
    Heart & Lung
    Volume
    43
    Issue
    2
    DOI
    https://doi.org/10.1016/j.hrtlng.2013.11.011
    Subject
    Physiotherapy
    Cardiorespiratory Medicine and Haematology
    Nursing
    Publication URI
    http://hdl.handle.net/10072/62464
    Collection
    • Journal articles

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