Carbomedics (Bileaflet) 27 mm
Peak gradient:	8.79 ± 3.46 mmHg
Mean gradient:	3.46 ± 1.03 mmHg
Peak velocity:	1.61 ± 0.3 m/s
Pressure half-time:	89 ± 20 ms
Effective orifice area:	2.9 ± 0.75 cm2