Partial endotracheal tube occlusion with a heat moisture exchange filter: Partially remembering the observations

Douglas Houghton, Bryan DeHaven, David V Shatz, J. Morgan

Research output: Contribution to journalArticle

Abstract

Introduction: Clinical observations of mechanically ventilated behaviors are frequently both subjective and prone to selective rememberance. we re-evaluated the previously reported incidence of partial endotracheal tube occlusion (EETO) with secretions when a heat moisture exchanging filter (HMEF, Pall BB-100) was used for humidification. This was to ascertain whether the objective examination of the artificial airway was in agreement with the recollection. Methods: Prospective, sequential evaluation of 390 adult patients in a 25 bed trauma ICU of an academic medical center over 11 months receiving an artificial aitway for mechanical ventilation. Endotracheal tubes were constructed of PVC, with no silastic tubes employed. Duration of the artificial airway was from the day of insertion until either extubation, or examination of the tube by direct visualization. Classification was by the qurtile method described by Kaufman(1). Comparison to prior data(2) from the same critical care are with both HMEF and water humidifiers was made. Results: There were no differences in incidence of partial endotracheal tube occlusion from that previously reported(2) using both the HMEF and heated water (hw) humidifiers. Evaluation by t-test and anova. p=ns Conclusion: Untoward occurances 'stand out' in caregivers recollections which are not always verified by objective data. Reappraisal of partial ETTO yielded comparable results to previously published reports, documenting no changes in the occurance of significant events. ETTO current n=390 previous n=140 hmef previous n=140 hw 0-25% 366 (93.8%) 135 (96.4%) 13 (93.6%) 25-50% 22 (5.6%) 5 (3.6%) 7 (5%) 50-75% 1 (0.3%) 0 1 (0.7%) 75-100% 1 (0.3%) 0 1 (0.7%).

Original languageEnglish (US)
JournalCritical Care Medicine
Volume27
Issue number12 SUPPL.
StatePublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • Critical Care and Intensive Care Medicine

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