In vitro estimation of tracheal mucous velocity: Comparison of a solid and a liquid marker

T. Ahmed, A. J. Januszkiewicz, A. Brown, G. A. Chapman, J. F. Landa

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

We compared the in vitro estimation of mucociliary transport using a solid marker (Teflon disc) to that of a liquid marker (methylene blue dye). In seven isolated canine tracheal preparations, motion of Teflon discs (2 mg/mm 2) and the advancing front of methylene blue dye droplets (0.04 mg/mm 2) were recorded simultaneously. In all comparisons, velocity of 46 pairs of Teflon discs and methylene blue dye droplets was within ± 10% of a line of identity. Mean tracheal mucous velocity by Teflons discs was 8.8 mm/min (SD 2.2), and with methylene blue dye 8.6 mm/min (SD 2.1). In all seven canine tracheas, comparison of mucous velocity was within ± 10% of a line of identity. These results indicate that the differences in such properties of a marker, i.e. liquid vs solid or their weights, per se do not affect the estimation of tracheal mucous velocity.

Original languageEnglish (US)
Pages (from-to)533-538
Number of pages6
JournalClinical Respiratory Physiology
Volume16
Issue number4
StatePublished - 1980

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine

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    Ahmed, T., Januszkiewicz, A. J., Brown, A., Chapman, G. A., & Landa, J. F. (1980). In vitro estimation of tracheal mucous velocity: Comparison of a solid and a liquid marker. Clinical Respiratory Physiology, 16(4), 533-538.