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Intensive Care Med. 2002 Apr;28(4):515-9. Epub 2002 Feb 22.

Inappropriate ventilator triggering caused by an in-line suction catheter.

Author information

1
Department of Medicine, Dartmouth-Hitchcock Medical Center, One Medical Center Drive, Lebanon, NH 03756-0001, USA.

Abstract

OBJECTIVE:

To examine the phenomenon of inappropriate triggering caused by an in-line suction catheter.

DESIGN:

We used a test lung to assess inappropriate triggering in four ventilators with both pressure and flow triggering.

RESULTS:

With pressure triggering, inappropriate triggering occurred only in the presence of PEEP. However, with flow triggering, inappropriate triggering occurred both with and without PEEP. Inappropriate triggering did not occur in a model of severe airflow obstruction.

CONCLUSION:

In-line suction catheters may lead to inappropriate triggering and potentially dangerous increases in delivered ventilation.

PMID:
11967610
DOI:
10.1007/s00134-002-1239-0
[Indexed for MEDLINE]

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