Abstract
Datex-Ohmeda S/5TM ADU with tidal volume compensation adjusts the volume delivered by the ventilator bellow to ensure that the sum of the volume delivered from the ventilator and from the fresh gas flow equals the preset tidal volume.2 During each inspiratory phase of respiratory cycle (2.5 sec), the amount of tidal volume delivered was equal to fresh gas flow/sec (13000 mL·60 sec–1) × 2.5 sec = 541 mL. This amount exceeded the preset tidal volume of 500 mL. Therefore, there was no additional delivery required from the ventilator bellows to achieve the preset tidal volume. Anesthesiologists should be alerted to this phenomenon of ventilator bellow standstill during emergence when the inspiratory volume delivered using a high fresh gas flow is greater than or equal to the preset tidal volume on volume control ventilation.
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Schedule a callMore From: Canadian Journal of Anesthesia/Journal canadien d'anesthésie
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