title: Continuous mean arterial pressure measurement in the fingers: the influence of local arm cooling.
abstract: Two different methods were studied for non-invasive beat-to-beat finger mean arterial pressure (MAP) measurement in 14 healthy volunteers during local arm cooling to 17 degrees C. Fingertip skin blood flow was recorded by a laser Doppler instrument. The difference between the oscillometric beat-to-beat blood pressure measurement device (UT9201) and volume clamp monitor (Finapres) before cooling was -1.5+/-1.1 mmHg, and, although statistically significant, (p< 0.01), this difference cannot be considered clinically meaningful. The results obtained using the two devices during arm cooling showed a systematic disagreement in the continuously recorded MAP. After a 30s period of cooling, the group-averaged difference of UT9201 minus Finapres, calculated as change from the baseline, reached (mean +/- SD) 8.8+/-6.3 mmHg (statistically significant, p< 0.01).
authors.affiliation: Department of Physiology, University of Tartu, Estonia. raamat@admin.ut.ee
authors.forename: R
authors.initials: R
authors.lastname: Raamat
authors.forename: K
authors.initials: K
authors.lastname: Jagomägi
authors.forename: J
authors.initials: J
authors.lastname: Talts
authors.forename: E
authors.initials: E
authors.lastname: Länsimies
authors.forename: J
authors.initials: J
authors.lastname: Jurvelin
authors.forename: P
authors.initials: P
authors.lastname: Kolari
mesh_terms: D000328:Adult; D001795:Blood Pressure Determination / Q000379:methods*; D003080:Cold Temperature; D005260:Female; D005385:Fingers / Q000098:blood supply*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009991:Oscillometry; D012039:Regional Blood Flow; D015203:Reproducibility of Results