Format

Send to

Choose Destination
See comment in PubMed Commons below
Crit Care Med. 2004 Jan;32(1):120-5.

Endotracheal tube intraluminal volume loss among mechanically ventilated patients.

Author information

1
Pulmonary and Critical Care Division, Washington University School of Medicine, St. Louis, MO 63110, USA.

Abstract

OBJECTIVE:

To measure endotracheal tube intraluminal volume loss among mechanically ventilated patients.

DESIGN:

Prospective observational study.

SETTING:

Medical intensive care unit (19 beds) of an urban university-affiliated teaching hospital.

PATIENTS:

A total of 101 patients with acute respiratory failure requiring >24 hrs of mechanical ventilation.

INTERVENTIONS:

None.

MEASUREMENTS AND MAIN RESULTS:

Acoustic reflectometry was employed to measure the intraluminal volume of 13-cm endotracheal tube segments. The endotracheal tube segment volumes were statistically smaller among endotracheal tubes used in patients compared with unused endotracheal tubes (5.4 +/- 0.7 vs. 6.0 +/- 0.6 mL, p <.001). The average percentage difference in endotracheal tube segment volumes, between the unused endotracheal tubes and the endotracheal tubes used in patients, was 9.8% (range, 0-45.5%). The percentage difference in the endotracheal tube segment volumes increased significantly with increasing duration of tracheal intubation (r2 =.766, p <.001). The minimum diameter of the endotracheal tube segments was also statistically smaller among endotracheal tubes used in patients compared with the unused endotracheal tubes (7.5 +/- 0.4 vs. 6.7 +/- 1.2 mm, p <.001).

CONCLUSIONS:

Endotracheal tube intraluminal volume loss is common among patients with acute respiratory failure requiring mechanical ventilation and increases with prolonged tracheal intubation.

[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Wolters Kluwer
    Loading ...
    Support Center