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Table 2 Segmental and averaged systolic peak values of 2DST measurements

From: Assessment of left ventricular function in horses with aortic regurgitation by 2D speckle tracking

 ControlMildModerateSevere
SLGbasSept20.7 ± 3.720.5 ± 3.522.9 ± 4.322.6 ± 4.8
(%)midSept21.7 ± 2.621.2 ± 3.423.3 ± 3.022.9 ± 4.7
midLat19.7 ± 4.219.7 ± 4.520.9 ± 5.117.2 ± 5.7
basLat19.3 ± 4.120.4 ± 5.119.6 ± 6.017.7 ± 8.7
average20.3 ± 2.520.5 ± 2.721.7 ± 2.819.9 ± 5.2
SrLSbasSept0.82 ± 0.14a0.85 ± 0.17a, b0.97 ± 0.24b
P = 0.036
0.92 ± 0.16a, b
(s−1)midSept0.86 ± 0.140.87 ± 0.140.94 ± 0.140.88 ± 0.11
midLat0.91 ± 0.150.86 ± 0.130.97 ± 0.170.89 ± 0.13
basLat1.05 ± 0.191.08 ± 0.161.07 ± 0.181.18 ± 0.37
average0.91 ± 0.120.91 ± 0.110.99 ± 0.120.96 ± 0.12
DLbasSept30.7 ± 4.9a
P < 0.001
33.4 ± 6.0a, b
P = 0.001
36.9 ± 5.1b, c
P = 0.002
41.7 ± 8.2c
(mm)midSept17.6 ± 4.6a
P < 0.001
20.0 ± 3.7a, b
P < 0.001
22.9 ± 4.2b, c
P < 0.001
26.6 ± 4.7c
midLat20.6 ± 4.0a, b19.5 ± 7.2a22.4 ± 5.0a, b24.7 ± 5.8b
P = 0.044
basLat33.9 ± 6.234.7 ± 9.335.7 ± 7.737.6 ± 9.9
average25.7 ± 4.0a
P < 0.001
26.9 ± 5.3a, b
P = 0.008
29.5 ± 4.1b, c
P = 0.039
32.4 ± 6.1c
SCAnt18.3 ± 4.6a, b15.6 ± 5.0a20.4 ± 5.4b
P = 0.009
18.6 ± 3.3a, b
(%)AntSept24.9 ± 6.122.7 ± 6.122.0 ± 5.419.6 ± 6.8
Inf9.8 (1.3–22.1)a13.3 (3.8–25.2)a, b14.4 (3.4–34.2)b
P = 0.048
14.7 (7.2–25.5)a, b
Lat16.7 ± 5.717.0 ± 4.320.3 ± 6.217.7 ± 4.6
Post12.1 ± 5.2a
P < 0.001
18.4 ± 5.8b, c
P = 0.005
21.2 ± 7.5b14.3 ± 8.3a, c
P = 0.024
Sept18.1 ± 5.317.4 ± 5.517.9 ± 4.714.7 ± 6.9
average16.8 ± 3.0a
P = 0.040
17.4 ± 3.1a, b19.3 ± 3.2b16.3 ± 3.5a
P = 0.047
SrCSAnt1.02 ± 0.210.97 ± 0.161.09 ± 0.231.08 ± 0.23
(s−1)AntSept1.18 ± 0.301.12 ± 0.241.18 ± 0.281.00 ± 0.32
Inf0.77 (0.43–1.07)a0.85 (0.48–1.55)a, b0.87 (0.60–1.51)a, b0.93 (0.79–1.07)bP = 0.017
Lat1.07 ± 0.180.99 ± 0.231.18 ± 0.281.10 ± 0.24
Post1.06 ± 0.201.15 ± 0.241.25 ± 0.271.16 ± 0.25
Sept0.92 ± 0.220.91 ± 0.210.94 ± 0.210.77 ± 0.23
average1.00 ± 0.141.00 ± 0.141.09 ± 0.160.99 ± 0.19
SRAnt53.3 ± 18.9a56.5 ± 19.7a, b73.8 ± 23.4b
P = 0.007
64.2 ± 26.4a, b
(%)AntSept55.5 ± 17.6a58.9 ± 20.1a, b73.4 ± 21.8b
P = 0.036
76.2 ± 32.8b
P = 0.038
Inf53.6 ± 20.4a57.1 ± 21.4a, b75.8 ± 28.4b
P = 0.008
62.9 ± 23.3a, b
Lat54.6 ± 21.1a
P = 0.018
56.0 ± 21.7a
P = 0.048
76.4 ± 29.2b59.4 ± 29.9a, b
Post52.7 ± 19.4a
P = 0.004
56.8 ± 21.7a
P = 0.042
76.0 ± 26.2b62.4 ± 27.0a, b
Sept57.3 ± 18.2a58.1 ± 23.7a, b77.4 ± 26.0b
P = 0.023
71.8 ± 27.6a, b
average54.5 ± 18.0a
P = 0.006
57.2 ± 20.1a
P = 0.037
75.5 ± 24.3b65.5 ± 26.2a, b
SrRSAnt1.84 (1.17–2.98)a1.99 (1.36–3.37)a, b2.35 (1.01–3.46)bP = 0.0071.94 (1.28–4.01)a, b
(s−1)AntSept1.85 ± 0.511.98 ± 0.512.26 ± 0.642.16 ± 0.83
Inf1.86 (1.04–3.23)a2.02 (1.37–3.23)a, b2.41 (1.58–4.95)bP = 0.0112.09 (1.27–3.50)a, b
Lat2.22 (1.26–9.09)a2.06 (1.36–3.47)a, b2.50 (1.55–4.86)bP = 0.0491.96 (0.96–4.25)a, cP = 0.041
Post2.05 (1.15–6.86)a2.05 (1.40–3.29)a, b2.38 (1.56–3.19)bP = 0.0212.05 (1.08–4.06)a, b
Sept1.95 ± 0.512.00 ± 0.552.34 ± 0.572.21 ± 0.70
average1.96 (1.19–3.65)2.02 (1.31–3.29)2.37 (1.48–3.70)2.06 (1.17–3.92)
  1. SLG Longitudinal strain, SrLS Systolic longitudinal strain rate, DL Longitudinal displacement, SC Circumferential strain, SrCS Systolic circumferential strain rate, SR Radial strain, SrRS Systolic radial strain rate. Different superscripts indicate significant (P < 0.05) differences between groups (a, b, c). Variables with normal distribution are reported as mean ± standard deviation. Variables with non-normal distribution are reported as median (range)