Print Email Facebook Twitter Finometer, finger pressure measurements with the possibility to reconstruct brachial pressure Title Finometer, finger pressure measurements with the possibility to reconstruct brachial pressure Author Guelen, I. Westerhof, B.E. van der Sar, G.L. van Montfrans, G.A. Kiemeneij, F. Wesseling, K.H. Bos, W.J.W. Gaubius Instituut TNO Publication year 2003 Abstract Objective: To evaluate three methods aimed at the reconstruction of brachial pressure from non-invasive finger arterial pressure measurements as implemented in the Finometer™, (FMS, Finapres Measurement Systems, Arnhem, Netherlands), the successor to the Finapres™ (TNO Siomedical Instrumentation, Amsterdam, Netherlands). Methods: Finger arterial pressure (FinAP) may differ from intra-brachial pressure (BAP). Pulse shape differences are removed by applying a generalized waveform filter. Pressure level differences are corrected by a generalized level correction equation using filtered systolic and diastolic levels and by level calibration, which uses an additional return-to-flow (RTF) systolic pressure measurement on the ipsilateral upper arm for an individual calibration of the reconstructed brachial pressure. Validation: These methods were validated in 37 subjects, aged 41 to 83 years after a cardiac catheterization procedure. Intra-brachial and Finometer pressures were recorded simultaneously. Finometer pressures were compared after application of waveform filtering and level correction (flcAP), and after an additional RTF calibration (reBAP). Results: Finger arterial systolic, diastolic and mean pressures for the group differed from SAP by -9.7 ± 13.0, -11.6 ± 8.0 and -16.3 ± 7.9 mmHg (mean ± SD) respectively. Similarly flcAP differed by -1.1 ± 10.7, -0.2 ± 6.8 and -1.5 ± 6.6 mmHg and reBAP differed by 3.1 ± 7.6, 4.0 ± 5.6 and 2.7 ± 4.7 mmHg. Conclusion: Reconstruction of BAP from FinAP as implemented in the Finometer reduces the pressure differences, with an individual RTF calibration to well within AAMI requirements. © 2003 Lippincott Williams & Wilkins. Subject Finapres™Finger arterial pressureFinometer™Non-invasiveReconstructed brachial pressureArterial pressureBrachial arteryConference paperDeviceDiastolic blood pressureDigital arteryHeart catheterizationPressure measurementSystolic blood pressureWaveformAdultAgedAged, 80 and overBlood PressureBlood Pressure DeterminationBrachial ArteryCalibrationFemaleFingersHumansMaleMiddle AgedReproducibility of Results To reference this document use: http://resolver.tudelft.nl/uuid:719959ad-b92c-4d99-84fd-25a2d4401864 DOI https://doi.org/10.1097/00126097-200302000-00006 TNO identifier 280279 ISSN 1359-5237 Source Blood Pressure Monitoring, 8 (1), 27-30 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.