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Table 5 Postoperative echocardiographic data between groups

From: Early and mid-term outcome in terms of functional and hemodynamic performance of the st. Jude regent 19-mm aortic mechanical prosthesis versus 19-mm carpentier edwards aortic biological prosthesis

Variables

Group I

Group II

p-value

Diameter of the ascending aorta (mm)

30 ± 4.2

31.2 ± 7

0.1

Diameter of the left atrium (mm)

45.4 ± 9.4

44.5 ± 7

0.51

End-diastolic right ventricle diameter (mm)

22 ± 8

23 ± 6

0.39

End-diastolic LV diameter (mm)

46.6 ± 6

47 ± 9

0.69

End-systolic LV diameter (mm)

28 ± 6.7

28.6 ± 6

0.55

End-diastolic IVS thickness (mm)

12 ± 1.6a

12.2 ± 2.3a

0.45

End-systolic IVS thickness (mm)

17.4 ± 5

17.6 ± 4.6

0.79

End-diastolic LV PW thickness (mm)

11.5 ± 1.5a

11.3 ± 2.7

0.45

End-systolic LV PW thickness (mm)

16.4 ± 6a

16 ± 4a

0.86

Shortening Fraction (%)

40.5 ± 9.8

43 ± 11

0.1

End-diastolic LV volume (ml)

85 ± 28.7

91 ± 27

0.16

End-systolic LV volume (ml)

37.5 ± 18.3

40 ± 17

0.36

Indexed end-diastolic LV volume (ml/mq)

50 ± 15

53 ± 17

0.2

Indexed end-systolic LV volume (ml/mq)

21.7 ± 9.7

23.4 ± 11

0.26

Left ventricular ejection fraction (%)

56.4 ± 10.7

55 ± 12

0.4

VmaxE (cm/s)

126 ± 44

122 ± 37

0.54

VmaxA(cm/s)

118.4 ± 29.5

123 ± 33

0.31

Mitral valve regurgitation grade

1.64 ± 0.53a

1.5 ± 0.8a

0.11

Peak pulmonary artery pressure (mmHg)

43 ± 12.8a

40 ± 14a

0.13

Left ventricular mass (gm)

199 ± 38a

207 ± 61a

0.22

Left ventricular mass index (gm/m2)

119 ± 22.5a

122 ± 22a

0.37

Left ventricular mass index reduction (gm/m2)

44.1 ± 30

46.4 ± 26

0.60

Peak transvalvular gradient (mmHg)

28.3 ± 11a

31 ± 12a

0.11

Mean transvalvular gradient (mmHg)

15.7 ± 6.5a

17 ± 7a

0.19

Aortic valve regurgitation grade

1.1 ± 0.3

1.2 ± 0.9

0.15

Peak trans tricuspid valve gradient

34 ± 11.4

32 ± 13

0.26

Effective orifice area

1.35 ± 0.14

1.33 ± 0.2

0.38

Indexed effective orifice area (cm2/m2)

0.81 ± 0.12

0.79 ± 0.1

0.26

Indexed orifice area < 0.75 cm2/m2

110 (43.8 %)

24 (44.4 %)

0.95

Indexed orifice area ≤ 0.65 cm2/m2

19 (7.5 %)

3 (5.6 %)

0.82

Doppler Velocity Index

0.5 ± 0.15

0.48 ± 0.2

0.41

Mitral valve area (cm2)

3.7 ± 6.3

3.5 ± 4.2

0.83

  1. aThe postoperative value is significantly lower than preoperatively
  2. LV left ventricle, IVS interventricular septum, PW posterior wall