Physiological influences on continuous finger and simultaneous intra-arterial blood pressure

American Heart Association
Publication Type:
Journal Article
Hypertension, 1995, 26 pp. 307 - 314
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Because of the clinical and experimental utility of continuous finger blood pressure measurements and the need for accuracy, we tested the perfonnance of a new hydraulic device in 22 consecutive hypertensive subjects during physiological and pharmacological interventions. Ipsilateral brachial intra-arterial pressure was monitored during rest, Valsalva's maneuver, static handgrip, and mental arithmetic and after sublingual glyceryl trinitrate. In excess of 40 000 blood pressure values were analyzed. Average bias (intra-arterial minus finger blood pressure) was 8.2±17.0 mm Hg (mean±SD, P~NS) for systolic and 2.8±lOA mm Hg (P=NS) for diastolic pressure. Two-way ANOV A of biases with subject and task factors showed a subject effect (P<.OOI). Intersubject and intrasubject standard deviations of bias were 13.8 and 9.S mm Hg systolic and S.7 and 5.7 diastolic, respectively.
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