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Table 1 Repeatability of segmental and average peak values of two-dimensional speckle tracking measurements of left ventricule at the papillary muscles level in ten healthy adult Saanen goats

From: Two-dimensional speckle tracking echocardiography in goats: repeatability, variability, and validation of the technique using an exercise test and an experimentally induced acute ischemic cardiomyopathy

VariablesSegmentObserved Mean ± SD95% CI of the meanBetween-cycle CV (%)Between-day CV (%)
Sc-S (%)Antsept−27.26 ± 5.43− 30.35 – − 23.1718.3817.93
Ant− 21.85 ± 5.61−26.08 – − 17.6224.3625.31
Lat−15.16 ± 5.73−19.48 – − 10.8437.7940.87
Post−17.36 ± 6.85 a− 22.52 – − 12.2037.9943.11
Inf−23.11 ± 6.21−27.79 – − 18.4326.8326.27
Sept−26.84 ± 5.71− 31.15 – − 22.5319.8319.38
Average−21.93 ± 3.30− 24.42 – − 19.4413.9814.46
Sr-S (%)Antsept72.55 ± 18.0158.97–86.1324.1424.55
Ant71.72 ± 21.2855.67–87.7728.9429.62
Lat77.25 ± 22.3260.42–94.0828.3329.35
Post81.35 ± 22.1864.63–98.0726.8728.33
Inf82.37 ± 20.6266.82–97.9224.0125.45
Sept80.12 ± 18.2566.36–93.8821.5122.49
Average77.56 ± 17.9364.04–91.0821.8122.88
SRc-S (1/s)Antsept−2.13 ± 0.47− 2.48 – −1.7820.1721.61
Ant−1.93 ± 0.58−2.37 – − 1.4927.0028.45
Lat−1.66 ± 0.51−2.04 – − 1.2827.7831.50
Post−2.13 ± 0.65−2.62 – − 1.6429.3529.81
Inf−2.22 ± 0.61−2.68 – − 1.7625.1426.16
Sept−2.29 ± 0.50−2.67 – −1.9120.1422.32
Average−2.06 ± 0.29−2.28 - -1.8413.2214.10
SRc-E (1/s)Antsept3.58 ± 0.92 a2.89–4.2725.2126.47
Ant3.32 ± 1.03 a2.54–4.1029.1033.41
Lat2.71 ± 0.882.05–3.3731.5435.63
Post3.25 ± 0.992.50–4.0029.1231.07
Inf2.95 ± 0.872.29–3.6126.9729.01
Sept3.38 ± 0.972.65–4.1126.2829.36
Average3.20 ± 0.562.78–3.6215.8517.94
SRc-A (1/s)Antsept1.75 ± 0.60 a1.30–2.2031.0335.65
Ant1.41 ± 0.740.85–1.9746.7353.29
Lat1.05 ± 0.630.57–1.5353.4457.01
Post1.28 ± 0.730.73–1.8355.1158.34
Inf1.51 ± 0.730.96–2.0639.9547.95
Sept1.85 ± 0.741.29–2.4135.0039.24
Average1.48 ± 0.39 a1.19–1.7722.2528.19
SRr-S (1/s)Antsept2.88 ± 0.802.28–3.4824.8224.93
Ant3.35 ± 0.972.62–4.0827.1027.23
Lat3.49 ± 0.922.80–4.1824.2024.65
Post3.61 ± 0.912.92–4.3023.2624.55
Inf3.54 ± 0.872.88–4.2022.5523.00
Sept3.11 ± 0.772.53–3.6922.0923.04
Average3.33 ± 0.682.82–3.8418.5219.07
SRr-E (1/s)Antsept−3.23 ± 0.99 a−3.98 – −2.4828.2630.35
Ant−3.21 ± 1.19−4.11 – − 2.3133.2437.17
Lat−3.30 ± 1.21−4.21 – −2.3933.3338.25
Post−3.43 ± 1.16− 4.30 – −2.5631.2535.39
Inf−3.43 ± 1.02−4.20 – −2.6627.2831.84
Sept−3.29 ± 0.92 a−3.98 – −2.6026.8130.89
Average−3.31 ± 0.91−4.00 – −2.6226.2129.35
SRr-A (1/s)Antsept−2.28 ± 1.06−3.08 – −1.4842.5646.43
Ant−2.45 ± 1.02 a−3.22 – −1.6841.4147.22
Lat−2.71 ± 1.02 a−3.48 – −1.9434.6141.29
Post−2.84 ± 1.06 a−3.64 – − 2.0433.6042.15
Inf−2.88 ± 1.08 a−3.69 – − 2.0734.5041.87
Sept−2.60 ± 1.04 a−3.38 – −1.8235.4142.33
Average−2.59 ± 0.89 a−3.26 – −1.9230.74237.98
Dr-S (mm)Antsept5.90 ± 1.744.59–7.2129.1330.59
Ant7.50 ± 2.285.78–9.2231.3632.15
Lat9.10 ± 1.887.68–10.5220.8922.19
Post8.99 ± 1.917.55–10.4320.2222.11
Inf7.77 ± 2.196.12–9.4226.9129.07
Sept6.46 ± 1.565.28–7.6423.1125.73
Average7.62 ± 0.966.90–8.3411.7413.26
Rot-S (deg)Antsept8.91 ± 2.65 a6.91–10.9132.4734.99
Ant10.58 ± 2.438.75–12.4122.5524.69
Lat9.53 ± 2.697.50–11.5628.1530.17
Post7.22 ± 2.955.00–9.4440.2941.97
Inf6.28 ± 3.083.96–8.6045.2947.76
Sept7.01 ± 2.75 a4.94–9.0836.7040.65
Average8.23 ± 2.376.44–10.0227.3929.91
RotR-S (deg /s)Antsept97.89 ± 26.9477.58–118.2025.4726.64
Ant113.01 ± 22.4996.05–129.9718.5121.60
Lat112.02 ± 27.68 a91.15–132.8924.4825.88
Post93.11 ± 25.27 a74.06–112.1627.9330.29
Inf83.43 ± 25.9963.83–103.0330.3531.17
Sept85.30 ± 25.7265.91–104.6930.7131.12
Average97.47 ± 20.8981.72–113.2220.3622.17
RotR-E (deg /s)Antsept−73.18 ± 31.71−97.09 – −49.2742.7846.40
Ant−77.62 ± 30.53−100.64 – −54.6036.6640.06
Lat−83.60 ± 34.68 a− 109.75 – −57.4541.8747.22
Post−79.21 ± 37.71− 107.64 – −50.7846.7249.43
Inf−80.36 ± 36.85−108.14 – −52.5846.8847.99
Sept−73.94 ± 33.03−98.84 – −49.0447.8147.37
Average−77.98 ± 26.08−97.64 – −58.3231.4935.50
RotR-A (deg /s)Antsept−55.94 ± 29.45−78.15 – −33.7350.1451.96
Ant−60.62 ± 28.93 a−82.43 – −38.8144.5347.35
Lat−67.85 ± 33.02−92.75 – −42.9547.2150.23
Post−62.27 ± 33.96−87.88 – −36.6655.8658.53
Inf−55.57 ± 31.08−79.00 – −32.1454.7258.43
Sept−50.52 ± 29.02−72.40 – −28.6458.7558.81
Average−59.22 ± 23.09−76.63 – −41.8140.6142.58
  1. a Day-effect significantly observed with p < 0.05 (two-way ANOVA)
  2. -A Measurement during the atrial contraction in diastole, Ant Anterior segment, Antsept Anteroseptal segment, CI Confidence intervals, CV Coefficient of variation, SD Standard deviation, Dr. Radial displacement, −E Measurement during the early ventricular filling in diastole, Inf Inferior segment, Lat Lateral segment, Post Posterior segment, Rot Rotation, RotR Rotation rate, −S Measurement in systole, Sc Circumferential strain, Sept Septal segment, Sr Radial strain, SRc Circumferential strain rate, SRr Radial strain rate