| Calculation of the mean pressure with less delay for real-time clinical monitoring. | |
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MedLine Citation:
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PMID: 17946147 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The mean of cardiovascular pressure signals is an important metric in patient monitoring applications for many types of diseases and injuries. It is typically calculated with a moving average of 3-8 s of the pulsatile signal. This method of calculating the mean introduces a delay of 1.5-4 s. We demonstrate that an FIR filter with coefficients calculated with a least squares error (LSE) estimator can reduce this delay without a clinically significant impact on the accuracy of the displayed signal. Preliminary results with intracranial pressure signals show that the delay can be completely eliminated with a maximum root-mean-square error of approximately 1 mmHg. Reduction or elimination of this delay could permit patient monitors to display the mean in real time and permit clinicians to respond to acute events more rapidly. |
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Authors:
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Tim Ellis; James McNames; Brahm Goldstein |
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Publication Detail:
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Type: Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference Volume: 1 ISSN: 1557-170X ISO Abbreviation: Conf Proc IEEE Eng Med Biol Soc Publication Date: 2006 |
Date Detail:
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Created Date: 2007-10-23 Completed Date: 2008-03-13 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101243413 Medline TA: Conf Proc IEEE Eng Med Biol Soc Country: United States |
Other Details:
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Languages: eng Pagination: 2880-3 Citation Subset: IM |
Affiliation:
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Biomed. Signal Process. Lab., Electrical & Computer Engineering, Portland State Univ., OR, USA. taellis@pdx.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Biomedical Engineering Brain Injuries / physiopathology Humans Intracranial Hypertension / diagnosis, physiopathology Intracranial Pressure* Least-Squares Analysis Monitoring, Physiologic / statistics & numerical data* Signal Processing, Computer-Assisted Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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