What does it mean when you dont see Tidaling/Fluctuating?

What does it mean when you dont see Tidaling/Fluctuating?



It could mean 3 things:

1. that the line is kinked

2. there is a blood clot (hemathorax)

3. chest tube is up against the chest wall due to lung expansion (minimal fluctuations means that the chest tube needs to come out)



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