Page 13 - The Mathematic Model - results from the final model
Here is a snapshot from the final model in "outer.xls". The top five lines are the same as the initial model with varying wall thicknesses. Our "standard" ventricle of 5cm across and 9mm wall thickness is on line 9. The results columns show that the values are greater than in the initial model, by a modest amount.
Lines 13,14 and 15 show the effect of increasing wall thickness, line 15 being more like moderate hypertrophic myopathy. You may have noticed that increases in wall thickness are having a disproportionate effect on wall thickening: this is graphed on the next page. In the spreadsheet you can alter the input dimensions as much as you like, and it is no surprise to find that up rating the ratios of contractility, decreasing the short axis dimension and increasing wall thickness all enhance the hydraulic effect.
The bottom two lines show the situation towards the apex, when the diameter is down to 10mm. See how the wall only needs to be 5mm in order for the cavity to obliterate. I suspect that if we look critically at MRIs then we will detect apical cavity obliteration in the normal quite a lot of the time.