Articles |

A Comparison Between Systolic Aortic Root Pressure and Finger Blood Pressure FREE TO VIEW

Eddy G. Philippe; Jean-Louis Hébert; Catherine Coirault; Karen Zamani; Yves Lecarpentier; Denis Chemla
Author and Funding Information

From the Service de Physiologie Cardio-Respiratoire, CHU de Bicêtre, Le Kremlin Bicêtre Cedex, and Inserm U451-Loa-Ensta-Ecole Polytechnique, Palaiseau Cedex, France

1998 by the American College of Chest Physicians

Chest. 1998;113(6):1466-1474. doi:10.1378/chest.113.6.1466
Text Size: A A A
Published online


Background: Digital photoplethysmography is used to assess hemodynamic variability and baroreflex sensitivity. Numerous studies have critically evaluated the accuracy of the photoplethysmographic device against peripheral pressure. The aim of our study was to compare finger blood and aortic root pressure.

Methods: We prospectively compared simultaneous recordings of systolic pressure at the aortic root and finger level over three consecutive respiratory cycles in 15 patients (56±11 years) undergoing routine cardiac catheterization. Data were obtained at baseline, during deep breathing maneuver (0.1 Hz), and after left ventricular cineangiography.

Results: At baseline, systolic finger pressure overestimated systolic aortic pressure (145.2±22.5 vs 115.0±20.1 mm Hg; p<0.001). The pressure difference (30.2±17.0 mm Hg) was not influenced by systolic aortic pressure. There was no relationship between pressure difference and the main determinants of the pulse wave amplification phenomenon. There was a beat-to-beat relationship between finger and aortic pressure in 14 of 15 subjects (slope ranging from 0.37 to 1.70; ordinate: from −56 to +98 mm Hg). During the deep breathing maneuver and after left ventricular cineangiography, finger pressure still overestimated aortic pressure by 32.3±15.0 mm Hg and 38.3±13.9 mm Hg, respectively (each p<0.001). There was a beat-to-beat relationship between systolic aortic root pressure (IAoBP) and systolic finger (FBP) in 13 of 15 patients, with major scattering of both slopes and ordinates. Throughout the study, there was no predictable relationship between the level of IAoBP and pressure bias.

Conclusions: As expected, FBP was almost always higher than IAoBP. Importantly, the differences in systolic pressure did not correlate with known determinants of the pulse wave amplification phenomenon. The device must be used cautiously if one wants to noninvasively track spontaneous or induced changes in IAoBP.




Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

CHEST Journal Articles
  • CHEST Journal
    Print ISSN: 0012-3692
    Online ISSN: 1931-3543