Table 1.
Statistical analysis of in-vivo stretch data in the normal and post ring annuloplasty cases. The null hypotheses correspond to differences highlighted by roman numbers in a typical experiment shown in Fig. 5. p values were obtained from double-sided paired student t-test (n = 6).
| p value | |||
|---|---|---|---|
| Null hypothesis | Radial direction |
Circumferential direction |
|
| I. | In the normal valves, the stretch at max LVP is the same as the stretch at minimum LVP | < 0.05 | < 0.05 |
| II. | Restricting the annulus does not change the minimum LVP stretch. | <0.05 | <0.05 |
| III. | Restricting the annulus does not change the maximum LVP stretch. | 0.67 | <0.05 |
| IV. | The stretch at max LVP is the same as the stretch at minimum LVP when the annulus is geometrically restricted | <0.05 | 0.06 |