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|Title:||Automating the determination of wave speed using the pu-loop method|
|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.|
|Appears in Collections:||Mechanical and Aerospace Engineering|
Dept of Mechanical Aerospace and Civil Engineering Research Papers
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