His tidal volume was 500 mL. End-expiratory was +5 cm and end-inspiratory was +25. We were supposed to use the difference in airway pressure, and not the end-inspiratory pleural pressure (+20).
some-zheimersGreat explanation. In general, also a great idea to pay attention to the units. I studied Physics in undergrad and have got one or two questions based purely on following the units, when the formula slips.+29
redvelvetyes @endochondral1, at page 651 in 2019FA+20
chaosawaitsany time you see the word compliance, ฮV/ฮP should immediately pop into your head. But my question is, coming from complete ignorance, is it just a coincidence that the end-inspiratory pleural pressure is equal to the difference of the needed values?+
submitted by โalwaysanonymous(35)
His tidal volume was 500 mL. End-expiratory was +5 cm and end-inspiratory was +25. We were supposed to use the difference in airway pressure, and not the end-inspiratory pleural pressure (+20).
Compliance = ฮV/ฮP = 500 / 20 = 25 mL/cm H2O