Transcription of Basic Physics of Mechanical Ventilation
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Basic Physics of Mechanical Ventilation
This document was created by Alex Yartsev if I have used your data or images and forgot to reference you, please email me. With Basic Assessment and Support in Intensive Care by Gomersall et all as a foundation, I built using the humongous and canonical Principles and Practice of Mechanical Ventilation by Tobins et al the 1442 page 2nd edition Inspiratory phase Initiation phase Plateau phase: the change from inspiration to expiration; +/- inspiratory pause Basic Physics of Mechanical Ventilation : A ventilator is just a sophisticated leaf blower. - It is essentially a FLOW DELIVERY MECHANISM. - Inside, there is a precisely controlled turbine.
Peak pressure Plateau pressure Resisitive pressure; “Ohmic Resistance” Elastic pressure As soon as the flow stops, airway resistance falls and the pressure – formerly required to push air through the airway- drops to a plateau. Difference between this plateau and the peak pressure therefore must be the
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