Anaes SAQs · Anaesthetic ventilators
Drive mechanisms of the anaesthetic ventilator
Primary physics — the bellows (bag-in-bottle) using a driving gas, the piston (motor-driven cylinder), the turbine (impeller); and the safety advantage of the standing (ascending) bellows as a leak detector over the obsolete hanging bellows.
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ANZCAFRCAABAEDAIC
Prompt
Describe the drive mechanisms of the anaesthetic ventilator (the bellows, the piston, the turbine) and explain the difference between a standing and a hanging bellows.
Question
Describe the drive mechanisms of the anaesthetic ventilator (the bellows, the piston, the turbine) and explain the difference between a standing and a hanging bellows. (Question stem restated — the worked answers below carry the primary-source citations.)
References2ShowHide
- [2]Coisel Y, et al. How to choose an anesthesia ventilator? Ann Fr Anesth Reanim, 2014.PMID 25138358
- [1]Jackson K, et al. Review of Anesthesia Versus Intensive Care Unit Ventilators and Ventilatory Strategies: COVID-19 Patient Management Implications. AANA Journal, 2021.PMID 33501910