Page 14 - The wall/cavity ratio
To continue, the percentage of wall thickening has a non-linear relationship to the ratio of diastolic wall thickness to the short axis dimension, as this graph demonstrates. The greater the ratio, the greater the thickening. This holds for ventricles of all sizes.
In this way, the hydraulic effect is a very useful phenomenon, enhancing the effect of wall thickening on the ejection fraction.