Table 4 Variability of LV M-mode measurements
From: Transthoracic echocardiography reference values in juvenile and adult 129/Sv mice
Intra-Observer | Inter-Observer | |||
|---|---|---|---|---|
Juvenile | Error (%) | Observer variation (mm) | Error (%) | Observer variation (mm) |
LVAWd | 1.08 ± 6.66 | −0.01 ± 0.04 | 3.05 ± 11.36 | 0.02 ± 0.06 |
LVAWs | 3.74 ± 5.11 | −0.03 ± 0.04 | 4.88 ± 12.02 | 0.04 ± 0.10 |
LVIDd | 1.07 ± 3.30 | 0.03 ± 0.10 | 0.32 ± 6.29 | 0.01 ± 0.18 |
LVIDs | 3.11 ± 7.32 | 0.06 ± 0.16 | 1.11 ± 14.40 | 0.02 ± 0.29 |
LVPWd | 1.78 ± 7.11 | −0.01 ± 0.04 | 13.82 ± 27.87 | 0.07 ± 0.14 |
LVPWs | 0.78 ± 9.52 | 0.00 ± 0.08 | 9.15 ± 30.98 | 0.06 ± 0.20 |
IVSd | 4.96 ± 11.52 | 0.02 ± 0.04 | 8.83 ± 24.40 | 0.05 ± 0.11 |
IVSs | 2.40 ± 13.61 | 0.00 ± 0.07 | 2.07 ± 23.71 | 0.02 ± 0.13 |
Adult | Error (%) | Observer Variation (mm) | Error (%) | Observer Variation (mm) |
LVAWd | 4.18 ± 8.30 | −0.03 ± 0.07 | 3.24 ± 12.83 | 0.03 ± 0.10 |
LVAWs | 2.40 ± 8.69 | −0.02 ± 0.10 | 1.70 ± 9.05 | 0.02 ± 0.10 |
LVIDd | 1.49 ± 3.52 | 0.05 ± 0.12 | −0.43 ± 2.77 | −0.02 ± 0.10 |
LVIDs | 1.13 ± 5.56 | 0.03 ± 0.14 | 0.57 ± 5.44 | 0.01 ± 0.15 |
LVPWd | 5.68 ± 7.16 * | −0.03 ± 0.04* | −5.64 ± 20.58 | −0.05 ± 0.19 |
LVPWs | 2.10 ± 6.29 | −0.01 ± 0.05 | −8.86 ± 21.86 | −0.10 ± 0.24 |
IVSd | 2.73 ± 8.55 | −0.01 ± 0.04 | −2.88 ± 21.07 | −0.01 ± 0.09 |
IVSs | 2.04 ± 10.62 | 0.00 ± 0.06 | −0.84 ± 18.54 | 0.01 ± 0.10 |