Sampling Airway Surface Liquid: Non-Volatilesin the Exhaled Breath Condensate

  title={Sampling Airway Surface Liquid: Non-Volatilesin the Exhaled Breath Condensate},
  author={T. M. Dwyer},
Exhaled breath condensate (EBC) samples contain molecules that have no appreciable vapor pressure; such molecules likely derive from droplets of airway fluid. We analyzed EBC gathered from a total of 62 healthy volunteers in order to quantify the volume of airway liquid that was the source of the non-volatiles; saliva was analyzed as a reference secretion. EBC urea averaged 0.52 ± 0.12 μmol/L (n = 18), an 8,600-fold dilution from predicted blood urea nitrogen levels. Protein averaged 2.3 ± 0.3… CONTINUE READING


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Publications referenced by this paper.
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A simple method for estimating respiratory solute dilution in exhaled breath condensates

  • RM Effros, J Billert, B Foss
  • Am J Crit Care Med
  • 2003

Urea and the estimation of how dilute airway surface liquid (ASL) is in expired breath condensate (EBC)

  • TM Dwyer
  • Am J Resp Crit Care Med 163:A425
  • 2003
1 Excerpt

Acetic acid contributes to breath condensate acidity in asthma

  • JW Vaughn, B Gaston, T MacDonald
  • Eur Respir J
  • 2002

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