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Incremental bias in Finapres estimation of baseline blood pressure levels over time.

Publication ,  Journal Article
Ristuccia, HL; Grossman, P; Watkins, LL; Lown, B
Published in: Hypertension
April 1997

Finapres finger blood pressure monitoring appears to provide a reliable alternative to intra-arterial blood pressure measurement under many circumstances. However, few studies have focused on the limitations of Finapres assessment. In a previous pilot investigation, we observed that Finapres pressure following mental stressors failed to return to initial resting levels. Our objectives in the present study were to (1) replicate earlier findings, (2) examine whether local changes in the measured finger were responsible for the observed drift, and (3) test a method to facilitate the return of pressure to systemic baseline levels. We studied two groups of healthy subjects who underwent a protocol consisting of two mental stressors preceded and followed by baseline periods. In the control group, the Finapres continuously monitored pressure on a single finger for the entire protocol. The intervention group periodically had the Finapres cuff removed and the measured finger exercised to prevent local changes that might influence Finapres estimation of blood pressure. Comparisons indicated a group x baseline interaction effect for systolic and diastolic pressures (P < .0004 and P < .003, respectively). The group with the exercise intervention showed much greater recover during the final baseline than the control group. Recovery of pressures in the control group but not the intervention group was inversely related to the stress level of blood pressure (r = .86, P < .0002), indicating a relationship between blood pressure rise and the degree of distortion of subsequent baseline values. On the basis of our results, we propose that in prolonged protocols, the measurement finger be exercised to facilitate accurate measurements of finger pressure with the Finapres.

Duke Scholars

Published In

Hypertension

DOI

ISSN

0194-911X

Publication Date

April 1997

Volume

29

Issue

4

Start / End Page

1039 / 1043

Location

United States

Related Subject Headings

  • Time Factors
  • Middle Aged
  • Humans
  • Hemodynamics
  • Fingers
  • Evaluation Studies as Topic
  • Cardiovascular System & Hematology
  • Blood Pressure Monitors
  • Bias
  • Baroreflex
 

Citation

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Ristuccia, H. L., Grossman, P., Watkins, L. L., & Lown, B. (1997). Incremental bias in Finapres estimation of baseline blood pressure levels over time. Hypertension, 29(4), 1039–1043. https://doi.org/10.1161/01.hyp.29.4.1039
Ristuccia, H. L., P. Grossman, L. L. Watkins, and B. Lown. “Incremental bias in Finapres estimation of baseline blood pressure levels over time.Hypertension 29, no. 4 (April 1997): 1039–43. https://doi.org/10.1161/01.hyp.29.4.1039.
Ristuccia HL, Grossman P, Watkins LL, Lown B. Incremental bias in Finapres estimation of baseline blood pressure levels over time. Hypertension. 1997 Apr;29(4):1039–43.
Ristuccia, H. L., et al. “Incremental bias in Finapres estimation of baseline blood pressure levels over time.Hypertension, vol. 29, no. 4, Apr. 1997, pp. 1039–43. Pubmed, doi:10.1161/01.hyp.29.4.1039.
Ristuccia HL, Grossman P, Watkins LL, Lown B. Incremental bias in Finapres estimation of baseline blood pressure levels over time. Hypertension. 1997 Apr;29(4):1039–1043.

Published In

Hypertension

DOI

ISSN

0194-911X

Publication Date

April 1997

Volume

29

Issue

4

Start / End Page

1039 / 1043

Location

United States

Related Subject Headings

  • Time Factors
  • Middle Aged
  • Humans
  • Hemodynamics
  • Fingers
  • Evaluation Studies as Topic
  • Cardiovascular System & Hematology
  • Blood Pressure Monitors
  • Bias
  • Baroreflex