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In volume control mode of ventilation, when the inspiratory time (Ti) of the patient is greater than the Ti of the ventilator or respirator, the patient continues inspiration against the already closed inspiratory valve, causing the drop of Paw and, if the triggering threshold is reached, a new inspiratory cycle is started in which the second tidal ventilation (TV) adds to the first. The result is two stacked breaths with larger pressure for the second breath and prolonged expiratory duration.

 

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Topics #Double Triggering #mechanical ventilation #patient ventilator asynchrony