Why the study?
What are the physiological criteria for weaning patients from controlled ventilation?
What are the physiological criteria for weaning patients from controlled ventilation?
The article outlines specific physiological criteria, such as vital capacity and inspiratory force, required for safely weaning patients from controlled ventilation.
May guide weaning decisions using these thresholds; leaves open prospective validation in contemporary cohorts.
Weaning from Intermittent Positive-Pressure VentilationCriteriaTHE criteria for the discontinuation of controlled ventilation are the converse of those for the institution of controlled ventilation. The patient should have an alveolar arterial oxygen tension difference measured breathing 100 per cent oxygen (Aa DO2 1.0) of less than 300 to 350 mm Hg.1 A minimum vital capacity of 10 to 15 ml per kilogram of body weight is necessary. The maximum inspiratory force should be numerically greater than -20 cm of water.2 The ratio of dead space to tidal volume (VD/VT) is an accurate measure of whether a patient will . . .
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Feeley et al. (1975) studied this question.
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