Echocardiography | | | | | | |
Body weight (g) | 27.69 ± 0.58 | 27.57 ± 0.65 | 28.88 ± 0.84 | 27.75 ± 0.86 | 30.68 ± 0.84* | 28.53 ± 0.85 |
LV mass (mg) | 85.40 ± 2.61 | 82.02 ± 3020 | 110.25 ± 6.00** | 96.97 ± 5.10 | 109.19 ± 4.96** | 103.88 ± 6.69** |
LV mass/BW (mg/g) | 3.09 ± 0.08 | 2.97 ± 0.09 | 3.86 ± 0.28** | 3.47 ± 0.13 | 3.56 ± 0.14 | 3.61 ± 0.19** |
Heart rate (bpm) | 519.15 ± 14.64 | 480.60 ± 16.52 | 526.18 ± 10.57 | 537.46 ± 14.25 | 537.80 ± 10.05** | 543.62 ± 11.01** |
Cardiac output (ml/min) | 19.53 ± 0.87 | 17.73 ± 1.10 | 14.51 ± 0.75** | 16.65 ± 1.21 | 17.00 ± 1.51 | 20.16 ± 1.00 |
Stroke volume (μl) | 37.50 ± 0.94 | 36.63 ± 1.69 | 27.75 ± 1.70** | 31.38 ± 2.68 | 32.04 ± 3.21 | 37.00 ± 1.69 |
Ejection fraction (%) | 54.14 ± 1.84 | 52.85 ± 1.05 | 26.59 ± 2.84*** | 35.84 ± 4.67*** | 28.81 ± 3.37*** | 37.14 ± 3.83** |
Fractional shortness (%) | 27.50 ± 1.54 | 30.72 ± 1.10 | 15.37 ± 2.15*** | 20.18 ± 2.58*** | 15.83 ± 2.45*** | 20.15 ± 2.05*** |
LV volume, end systole (μl) | 32.56 ± 2.41 | 32.80 ± 1.79 | 86.62 ± 12.48** | 71.04 ± 13.61* | 85.23 ± 9.74** | 80.02 ± 15.82** |
LV volume, end diastole (μl) | 70.06 ± 2.62 | 69.43 ± 3.11 | 114.37 ± 11.98** | 102.41 ± 12.0* | 117.27 ± 8.71** | 117.02 ± 15.87** |
LV internal diameter, end systole (mm) | 2.74 ± 0.12 | 2.52 ± 0.09 | 4.03 ± 0.26*** | 3.43 ± 0.28* | 4.16 ± 0.3*** | 3.65 ± 0.29** |
LV internal diameter, end diastole (mm) | 3.77 ± 0.10 | 3.63 ± 0.09 | 4.72 ± 0.19** | 4.23 ± 0.21* | 4.90 ± 0.22*** | 4.50 ± 0.25** |
Hemodynamics | | | | | | |
LV end systolic pressure (mm Hg) | ND | ND | ND | ND | 91.90 ± 2.95 | 87.36 ± 1.97 |
LV end diastolic pressure (mm Hg) | ND | ND | ND | ND | 7.48 ± 0.97 | 5.10 ± 0.75 |
LV +dP/dt max (mm Hg/s) | ND | ND | ND | ND | 7071.68 ± 563.29 | 6516.17 ± 308.48 |
LV -dP/dt max (mm Hg/s) | ND | ND | ND | ND | 6634.24 ± 403.96 | 6665.88 ± 241.52 |
Tau (ms) | ND | ND | ND | ND | 11.31 ± 0.63 | 10.84 ± 0.40 |