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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