The Snapshot perturbation is a single frequency forced oscillation. When the perturbation is initiated, ventilation is paused and a sinusoidal oscillation is imposed onto the subject’s airways.


The document provides extensive information regarding:

  • an overview of Snapshot validation
  • interpreting the event log
  • troubleshooting excessive bronchoconstriction, partial blockages and obstructions, and subject impassivity 


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