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Related Experiment Videos

Does intermittent mandatory ventilation accelerate weaning?

E N Schachter, D Tucker, G J Beck

    JAMA
    |September 11, 1981
    PubMed
    Summary
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    Intermittent mandatory ventilation (IMV) did not reduce ventilator management time. This study found no significant difference in ventilator duration or hospitalization length between IMV and conventional mechanical ventilation.

    Area of Science:

    • Critical Care Medicine
    • Respiratory Therapy

    Background:

    • Intermittent mandatory ventilation (IMV) was developed to aid in weaning patients from mechanical ventilation.
    • Conventional mechanical ventilation includes assisted or controlled modes.

    Purpose of the Study:

    • To compare the outcomes of ventilator management using IMV versus conventional mechanical ventilation.
    • To determine if IMV reduces the duration of mechanical ventilation and hospitalization.

    Main Methods:

    • Retrospective comparison of 116 patients from 1975 (conventional ventilation) and 135 patients from 1976 (IMV or conventional ventilation).
    • Matched 65 IMV patients from 1976 with 1975 control patients based on key demographic and clinical factors.
    • Analyzed average ventilator time and length of hospitalization.

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    Main Results:

    • Average ventilator time was 145 hours for IMV patients and 142 hours for matched controls.
    • Average hospitalization length was 36 days for IMV patients and 30 days for controls.
    • No significant differences were observed in either outcome measure.

    Conclusions:

    • Intermittent mandatory ventilation (IMV) does not appear to shorten the duration of mechanical ventilation.
    • IMV did not significantly reduce the length of hospitalization compared to conventional mechanical ventilation.