Automatic “Respirator/Weaning” with Adaptive Support Ventilation: The Effect on Duration of Endotracheal Intubation and Patient Management

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Abstract
Atients were assigned to either an ASV protocol or a standard one consisting of synchronized intermittent ventilation followed by pressure support. Eighteen patients completed the ASV protocol, and 16 completed the standard one. There were no differences between groups in perioperative characteristics, lengths of tracheal intubation and intensive care unit stay, and ventilatory variables, except less peak inspiratory pressure during the initial phase in ASV (17.5 ± 0.8 versus 22.2 ± 0.8 cm H2O; P < 0.01). ASV patients required fewer ventilatory settings manipulations (2.4 ± 0.7 versus 4.0 ± 0.8 manipulations per patient; P < 0.05) and endured less high-inspiratory pressure alarms (0.7 ± 2.4 versus 2.9 ± 3.0; P < 0.05). These results suggest that in this specific population of patients, automation of postoperative ventilation with ASV resulted in an outcome similar to the control group. The internal logic of the new device resulted in less manipulation of the setting and alarms that could simplify respiratory management....