Called to patient's room by rn due to alarming ventilator presumed to be related to water in ventilator tubing.I noted increased peak inspiratory pressure and drained water from tubing.Flow graphics still demonstrated significant obstruction.Ultimately, i changed the expiratory filter even though it appeared dry.This resolved the problem.The filter was clearly defective, but the source of the flaw is not known.Increased resistance in filter.Condensation not falling into water trap and remaining within filter.
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