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http://bura.brunel.ac.uk/handle/2438/4265
Title: | Automating the determination of wave speed using the pu-loop method |
Authors: | Swalen, MJP Khir, AW |
Issue Date: | 2005 |
Publisher: | IEEE |
Citation: | Computers in Cardiology 32: 311−314 |
Abstract: | The PU-loop (pressure-velocity loop) is a method for determining wave speed and relies on the linear relationship between the pressure and velocity in the absence of reflected waves. This linearity of the PU-loop during early systole, which is directly related to wave speed, has always been established by eye. This paper presents a new technique that establishes this linearity and thus determining wave speed online. Pressure and flow were measured in the ascending aorta of 11 anesthetised dogs. The slope of the PU-loop, indicating wave speed was determined by eye and by using the new technique. The difference between the slopes of the two methods is in the order of 3%. The new technique is convenient and allows for the online assessment of wave speed, which could be used as a bedside tool for the assessment of arterial compliance. |
URI: | http://bura.brunel.ac.uk/handle/2438/4265 |
DOI: | http://dx.doi.org/10.1109/CIC.2005.1588099 |
ISSN: | 0276-6574 |
Appears in Collections: | Mechanical and Aerospace Engineering Dept of Mechanical and Aerospace Engineering Research Papers |
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