Egan's chapter 11 Exam Questions & Answers Already Passed
What are the phases of ventilation? - Inspiration and expiration Tidal volume (Vt) - Volume of gas that moves in and out of the respiratory tract measured during either inspiration or expiration Vt - Refreshes the gas present in the line, removing CO2 and Supplying O2 to meet metabolic needs To achieve ventilation - The respiratory muscles and/or mechanical ventilation have to generate changes in pressure so that gas will flow in or out of the lungs. Pressure= - (Elastance × volume) + (resistance × flow) Pressure - Force generated by the respiratory muscles or a mechanical ventilator, or both, during inspiration. Elastance - Distance ability of the lungs and thorax. (Pressure/volume) Reciprocal of compliance (volume/pressure) Flow - Volume change per unit of time Why is a pressure gradient needed? - To achieve gas flow from one place to another. What is the equation of motion used for? - To recognize the pressure gradients or differences in pressure between two points in space.
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