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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Mann-Liss, L.K. Petrucelli, S. Welkowitz, W. Spotnitz, A. Kostis, J.B. |
| Copyright Year | 1994 |
| Description | Author affiliation: Dept. of Biomed. Eng., Rutgers Univ., Piscataway, NJ, USA (Mann-Liss, L.K.; Petrucelli, S.; Welkowitz, W.) |
| Abstract | An analog circuit model has been developed to compute systolic and diastolic compliances of the arterial system in the human using a single noninvasive displacement transducer located at the superficial carotid artery. The LICO model (Local Impedance, Compliance and Output model) is driven by a step input of pressure equal in amplitude to the pulse pressure. The timing of the resulting flow is determined from the carotid pulse contour. A study of records from one hundred and two cardiac surgery patients shows that the LICO model compliance correlates well with a common measure of compliance; the ratio of the stroke volume to the pulse pressure, /spl Delta/V//spl Delta/P (systolic compliance r=0.821, p<0.001, diastolic compliance r=0.843, p<0.001). Although the diastolic value is computed from a first order pressure decay, the systolic and diastolic compliance values correlate well with one another (r=0.972, p<0.001). The change in compliance over the cardiac cycle, calculated as the difference between the diastolic and systolic values, also compares well to /spl Delta/V//spl Delta/P (r=0.903, p<0.001).< |
| Starting Page | 75 |
| Ending Page | 76 |
| File Size | 198171 |
| Page Count | 2 |
| File Format | |
| ISBN | 0780320506 |
| DOI | 10.1109/IEMBS.1994.412097 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1994-11-03 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Pulse measurements Analog circuits Analog computers Humans Transducers Carotid arteries Impedance Timing Surgery Volume measurement |
| Content Type | Text |
| Resource Type | Article |
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