This is a classic example of an asynchrony called “reverse triggering” - let’s start with the basics. First, by just looking at the scalars (the graphical representation of pressure, flow, and volume over time), we can infer we are in pressure control 1/

https://twitter.com/wapplefeld/status/1490496619988623361

How do we know that? Well, we know in pressure control we set PEEP, a pressure above peep, a time the vent will hold that pressure above peep (I-time). The yellow scalar is pressure-time. Here we see the vent elevates pressure rises to PIP (positive inspiratory pressure) 2/

@CPSolvers @thecurbsiders @cardionerds @justinberk @MikeRoseMDMPH @JudithBVick @BBroderickMD @TijanaTuhy @AlexHorneMD @SSRaj017 @reverendofdoubt By request- Introduction to mechanical ventilation with @sam_brusca and @wapplefeld part 2: Ventilator Modes.

#KingofVentilators 1/ In the last tweetorial, we discussed the Equation of Motion: the equation that underpins the physiology and physics of mechanical ventilation. 2/

@CPSolvers @thecurbsiders @cardionerds @justinberk @MikeRoseMDMPH @JudithBVick @BBroderickMD @TijanaTuhy @AlexHorneMD @SSRaj017 @reverendofdoubt Since you guys asked for it - @WApplefeld and @Sam_Brusca present “An Introduction to Mechanical Ventilation: A Tweetorial Series” In this series, we hope to clearly illustrate our approach to the physics, physiology, and practical application of mechanical ventilation.

Here is chapter 1: A Physics Primer 1/x