PMC7118406_01
The pressures on the pressure-time curve were minimal due to the larger tidal volumes that patient was pulling.
gr1.jpg
PMC7118406_01_gr1.jpg
fig1
The patient was overbreathing at a rate of 22 breaths per minute and was trying to pull tidal volumes of more than 700 cc (>12 cc/kg of IBW) (Fig. 1).
PMC7118406_02
Negative pressure-time curve related to patient inspiratory efforts leading to high tidal volumes and auto-peep (seen on flow-time and flow-volume curves).
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PMC7118406_02_gr2.jpg
fig2
The patient was noted to be taking higher than set tidal volumes and his pressure-time curve on the ventilator showed negative inspiratory deflections, indicating a high respiratory drive and significant inspiratory efforts (Fig. 2).