title: The measurement of nonelastic work of breathing using a commercially available respiratory integrator.
abstract: The authors compared real-time, breath-by-breath work of breathing (WOB) measurements made with a Hewlett-Packard 8815A respiratory integrator with nonelastic WOB values obtained by planimetry of pressure-volume tracings. They measured WOB while normal subjects breathed through a low-resistane mouthpiece. The integrator-derived values for WOB correlated well with planimeter-derived values (r = 0.97). Valid measurements of nonelastic WOB can be made at the bedside in realtime using the Hewlett-Packard 8815A without the addition of custom-built circuitry or hardware.
authors.affiliation: Division of Respiratory Sciences, University of Arizona College of Medicine, Tucson.
authors.forename: G N
authors.initials: GN
authors.lastname: Plost
authors.forename: S C
authors.initials: SC
authors.lastname: Campbell
authors.forename: R T
authors.initials: RT
authors.lastname: Vagedes
authors.forename: B Y
authors.initials: BY
authors.lastname: Shon
mesh_terms: D006801:Humans; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D012016:Reference Values; D014939:Work of Breathing / Q000502:physiology*