caa a22 4500 605510377 CHVBK 20210128100645.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s10877-014-9649-4 doi (NATIONALLICENCE)springer-10.1007/s10877-014-9649-4 Evaluation of filtering methods for acquiring radial intra-artery blood pressure waveforms [Elektronische Daten] [Lawrence Hersh, Bruce Friedman, William Luczyk, Jean Sesing] The methods for evaluating noninvasive blood pressure (NIBP) monitors using an intra-arterial reference are detailed in the ANSI/AAMI/ISO 81060-2:2009 standard. In a recent study, GE Healthcare obtained invasive radial arterial blood pressure waveforms. The work presented here describes the development of filtering strategies for obtaining high fidelity intra-arterial pressure waveforms for NIBP accuracy testing using the 81060-2 standard. The natural frequency and damping factor of each subject-catheter-transducer system was computed from fast-flush transients. These parameters were used to construct filters for removing or reducing resonance artifacts. Additionally, new optimal damping factors were evaluated for designing compensation filters. Theoretical measurement systems using actual damping factors (<0.4) and natural frequencies were found capable of generating significant systolic resonance artifacts (≥8mmHg). Typical filters that may be standardly available in monitoring equipment were observed to be potentially inadequate in removing resonance artifact. Filters with particular optimal damping factors (0.6-0.7) were effective in removing resonance artifact. Clinicians need to understand that resonance artifacts potentially exist in intra-arterial waveforms and that the adjustments of monitoring systems may not be adequate. Optimal filters for obtaining intra-arterial waveforms should take into account the damping factor and natural frequency of the measuring system. In research and device evaluation studies it is necessary that optimal filtering be done to minimize the effects of under-damping. Springer Science+Business Media New York, 2014 Intra-arterial blood pressure waveform filtering nationallicence Noninvasive blood pressure nationallicence Natural frequency nationallicence Damping factor nationallicence Filter design nationallicence Hersh Lawrence GE Healthcare, 8200 West Tower Avenue, 53223, Milwaukee, WI, USA aut Friedman Bruce GE Healthcare, 8200 West Tower Avenue, 53223, Milwaukee, WI, USA aut Luczyk William GE Healthcare, 8200 West Tower Avenue, 53223, Milwaukee, WI, USA aut Sesing Jean GE Healthcare, 8200 West Tower Avenue, 53223, Milwaukee, WI, USA aut Journal of Clinical Monitoring and Computing Springer Netherlands 29/5(2015-10-01), 659-669 1387-1307 29:5<659 2015 29 10877 https://doi.org/10.1007/s10877-014-9649-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10877-014-9649-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hersh Lawrence GE Healthcare, 8200 West Tower Avenue, 53223, Milwaukee, WI, USA aut NATIONALLICENCE 700 1- Friedman Bruce GE Healthcare, 8200 West Tower Avenue, 53223, Milwaukee, WI, USA aut NATIONALLICENCE 700 1- Luczyk William GE Healthcare, 8200 West Tower Avenue, 53223, Milwaukee, WI, USA aut NATIONALLICENCE 700 1- Sesing Jean GE Healthcare, 8200 West Tower Avenue, 53223, Milwaukee, WI, USA aut NATIONALLICENCE 773 0- Journal of Clinical Monitoring and Computing Springer Netherlands 29/5(2015-10-01), 659-669 1387-1307 29:5<659 2015 29 10877