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Table 2 Echocardiographic measurements from M-mode images

From: Transthoracic echocardiography reference values in juvenile and adult 129/Sv mice

Measurement Juvenile n Adult n p
LVAWd (mm) 0.61 ± 0.09 15 0.74 ± 0.14 15 0.005
LVAWs (mm) 0.85 ± 0.13 15 1.08 ± 0.18 15 < 0.001
LVIDd (mm) 2.84 ± 0.20 15 3.56 ± 0.19 15 < 0.001
LVIDs (mm) 1.96 ± 0.21 15 2.44 ± 0.28 15 < 0.001
LVPWd (mm) 0.59 ± 0.15 15 0.64 ± 0.13 15 ns
LVPWs (mm) 0.81 ± 0.17 15 0.88 ± 0.19 15 ns
EF (%) 59.63 ± 9.05 15 59.91 ± 8.15 15 ns
FS (%) 30.76 ± 6.15 15 31.45 ± 5.63 15 ns
IVSd (mm) 0.41 ± 0.08 15 0.47 ± 0.15 15 ns
IVSs (mm) 0.50 ± 0.13 15 0.62 ± 0.25 15 ns
RVIDd (mm) 1.08 ± 0.15 7 1.42 ± 0.19 11 0.001
RVIDs (mm) 0.65 (0.31) 7 0.89 (0.21) 11 ns
RVAWd (mm) 0.50 ± 0.11 7 0.32 ± 0.08 11 0.001
RVAWs (mm) 0.66 ± 0.16 7 0.57 ± 0.13 11 ns
  1. Values are mean ± SD or median (IQR), as appropriate. p = statistical significance. ns = not significant. n = 15 for all measurements, except for RV measurements (n = 7 for the juveniles and n = 11 for the adults).
  2. LVAW = Left ventricle anterior wall. LVID = Left ventricle internal diameter. LVPW = Left ventricle posterior wall. EF = Ejection fraction. FS = Fractional shortening. IVS = Interventricular septum. RVID = Right ventricle internal diameter. RVAW = Right ventricle anterior wall. -d = In diastole. -s = In systole.