Measurement of the flow-resistive properties of double-lumen bronchial tubes in vitro

M. Chiaranda, A. Rossi, G. Manani, O. Pinamonti, A. Braschi

Research output: Contribution to journalArticle

Abstract

This study measures the resistance to gas flow of different double-lumen bronchial tubes used for separate ventilation of each lung in critically ill patients. Different-sized Robertshaw and Carlens' tubes were studied, as well as a new device that consisted of a cuffed bronchial catheter introduced through a standard tracheal tube. The pressure-flow relationship was curvilinear in all cases. Robertshaw and Carlens' tubes were generally found to have bronchial and tracheal channels with almost similar resistance and offered total resistances similar to those of 7.0-8.0 mm internal diameter tracheal tubes. The new device had a higher resistance than others of equal external diameter. This must be taken into account when its use is recommended for prolonged respiratory support.

Original languageEnglish
Pages (from-to)335-340
Number of pages6
JournalAnaesthesia
Volume44
Issue number4
Publication statusPublished - 1989

ASJC Scopus subject areas

  • Anesthesiology and Pain Medicine

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    Chiaranda, M., Rossi, A., Manani, G., Pinamonti, O., & Braschi, A. (1989). Measurement of the flow-resistive properties of double-lumen bronchial tubes in vitro. Anaesthesia, 44(4), 335-340.