Here’s an interesting ventilator waveform; can anyone explain what’s going on during this inspiratory hold maneuver?
Another clue:
Y’all nailed it! This is a large bronchopleural fistula (BPF) causing air leak.
See how airway pressure drops with inspiration hold?
The ventilator measures exhaled (or “returned”) volumes and is alarming “Low MV” b/c most of the air is going out the chest tubes not the ETT
1/
See how airway pressure drops with inspiration hold?
The ventilator measures exhaled (or “returned”) volumes and is alarming “Low MV” b/c most of the air is going out the chest tubes not the ETT
1/
But why couldn’t this be from a cuff leak around the ETT?
Well it could be, except that ETT cuff leaks tend to be faster (“a quick puff of air escaping from the trachea”) instead a steady continuous leak out of the small airways/alveoli like we see here.
2/2
Well it could be, except that ETT cuff leaks tend to be faster (“a quick puff of air escaping from the trachea”) instead a steady continuous leak out of the small airways/alveoli like we see here.
2/2
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