title: Laser doppler flowmetry in the hyperbaric environment.
abstract: Continuous monitoring of laser Doppler (LD) flowmetry was performed in eight healthy volunteers (mean age 42.0 + 12.1 yr; range 25-62 yr) before, during and after hyperbaric oxygenation ([HBO at 2.5 and 1.95 ATA (atmosphere absolute)]).Two models of the discrimination analysis are presented which allow classification, resulting from the parameter obtained by the LD flowmetry.The results show that 100% separation of the LD data under HBO at 2.5 and 1.95 ATA including five parameters can be achieved with the first model. The second model for the analysis of four different phases with eight parameters still shows an obvious separation; however, only 75% of the group integration is correct. In addition to transcutaneous P(2) measurements, which are sometimes difficult to obtain perfectly, LD parameters will be of interest to manage HBO treatment, especially when peripheral circulation is reduced.
authors.affiliation: Department of Anesthesiology and Intensive Care Medicine, Research Group of Biomedical Engineering, Auenbruggerplatz, 29, A8036, Graz, Austria.
authors.forename: G
authors.initials: G
authors.lastname: Litscher
authors.forename: K O
authors.initials: KO
authors.lastname: Möller
authors.forename: B
authors.initials: B
authors.lastname: Ratzenhofer-Komenda
authors.forename: G
authors.initials: G
authors.lastname: Schwarz
authors.forename: T
authors.initials: T
authors.lastname: Koop
authors.forename: H
authors.initials: H
authors.lastname: Kovac
references.citation: Crit Care Med. 1991 May;19(5):595-6
references.pmid: 2026018
references.citation: J Clin Monit. 1990 Jan;6(1):10-7
references.pmid: 2295893
references.citation: Biomed Tech (Berl). 1995 Jul-Aug;40(7-8):195-9
references.pmid: 7548683
references.citation: Biomed Tech (Berl). 1997 Mar;42(3):38-41
references.pmid: 9112799