The therapist is establishing mechanical ventilation on a patient and intends to use flow-waveform triggering as the triggering mechanism. To which of the following problems does the therapist need to be perceptive?
A. auto-triggering
B. dynamic hyperinflation
C. ineffective triggering
D. auto-cycling
?ANS: A
A. Correct response: Compared with flow triggering, flow-waveform triggering is more sensitive to patient effort, resulting in fewer ineffective efforts, but more sensitive to auto- triggering. Flow-waveform triggering improves trigger synchrony, and requires less effort for triggering, but because of the improved sensitivity, is susceptible to auto-triggering.
B. Incorrect response: See explanation A.
C. Incorrect response: See explanation A.
D. Incorrect response: See explanation A.
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