TABLE 2.

Key dimensional changes from the fully closed to fully opened positions for the five valves studied.

Valve	Change in commissure angle untreated (°)	Change in commissure angle treated (°)	Leaflet excursion untreated (mm)	Leaflet excursion treated (mm)	bcirc untreated closed (mm−1)	bcirc untreated opened (mm−1)	Δbcirc untreated (mm−1)	bcirc treated closed (mm−1)	bcirc treated opened (mm−1)	Δbcirc treated (mm−1)
1	78.5	79.5	9.31	12.41	0.112	−0.172	0.284	0.190	−0.076	0.266
2	71.0	94.0	10.88	10.48	0.200	−0.083	0.283	0.407	−0.102	0.509
3	82.5	68.0	11.48	6.93	0.259	−0.090	0.349	0.272	−0.161	0.433
4	91.5	71.0	10.76	4.96	0.126	−0.219	0.345	0.110	−0.135	0.245
5	90.0	69.0	15.81	11.64	0.234	−0.146	0.380	0.173	−0.117	0.290
Mean ± SEM	82.70 ± 3.78	76.40 ± 4.87	11.65 ± 1.10	9.28 ± 1.43	0.186 ± 0.029	−0.142 ± 0.026	0.328 ± 0.019	0.230 ± 0.051	−0.118 ± 0.014	0.349 ± 0.052

Note that the commissure angle represents the change in angle from fully closed to fully opened, with the mean for both leaflet sides presented for each leaflet. Leaflet excursion was estimated as the distance the points in the central belly region displaced. The circumferential curvature b_circ represents the circumferential section curvature at the mid section of the valve (see Eq. (3)). There were no statistically significant differences between the open and closed states for each parameter using p ≤ 0.05.