Table 3

Early postoperative echocardiogram parameters, mean (SD)

19 mm21 mm23 mm25 mm27 mmTotal
On-X,n=2

SJM,
n=2
On-X,
n=3

SJM,
n=8
On-X,
n=6

SJM, n=12On-X,
n=15

SJM,
n=7
On-X,
n=7

SJM,
n=4
On-X, n=33

SJM,
n=33
Peak gradient, mm Hg32.2 (7.4)34.5 (0.7)21.9 (6.6)27.5 (6.9)29.9 (6.9)24.9 (5.9)19.1 (4.9)*25.1 (6.4)*22.1 (6.4)21.0 (5.5)22.7 (7.2)25.7 (6.4)
Mean gradient, mm Hg18.5 (0.7)19.0 (1.4)11.6 (2.5)14.6 (4.4)16.2 (3.6)13.2 (3.7)10.7 (3.5)13.0 (4.5)12.1 (4.6)11.7 (1.3)12.6 (4.3)13.7 (3.9)
Effective orifice area, cm2 1.8 (0.2)1.6 (0.3)1.9 (0.4)1.9 (0.2)2.3 (0.6)2.3 (0.5)2.5 (0.5)2.3 (0.5)2.2 (0.6)1.9 (0.5)
Effective orifice area index, cm2 m−2 1.1 (0.2)0.85 (0.2)0.97 (0.2)0.98 (0.1)1.2 (0.4)0.96 (0.1)1.2 (0.3)1.0 (0.2)1.1 (0.3)0.97 (0.2)
  • * p=0.04, Mann-Whitney U test comparing the peak gradient between the ONX and SJM patients with a 25 mm valve size.

  • †Data not available.

  • SJM, St Jude Medical.