Please use this identifier to cite or link to this item: 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 Aerospace and Civil Engineering Research Papers

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