Key result
Rubber tube aortic models demonstrate longitudinal wall waves resembling arterial impact waves.
Why the study?
Longitudinal waves in the walls of arteries were predicted theoretically but had not been previously described experimentally.
Model evidence of longitudinal waves is hypothesis-generating; leaves open in vivo confirmation and clinical relevance.
Experiments with a rubber tube model of the aorta have demonstrated the presence of longitudinal waves in the wall of the tubing. This mode of vibration was predicted by Lamb from the theoretical considerations, but has not previously been described. The characteristics of "impact waves" in arteries and of the longitudinal mural waves in the model appear to be similar. Longitudinal waves undoubtedly influence the arterial pulse contour. Theoretically, the damping coefficient for them is the same as that for radial waves.
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Robert L. Van Citters (1960) studied this question. Rubber tube model of the aorta was evaluated on Presence of longitudinal waves in the wall of the tubing. Experiments with a rubber tube model of the aorta demonstrated the presence of longitudinal waves in the wall of the tubing, which appear similar to impact waves in arteries.
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