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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

 

Control

Mild

Moderate

Severe

SLG

basSept

20.7 ± 3.7

20.5 ± 3.5

22.9 ± 4.3

22.6 ± 4.8

(%)

midSept

21.7 ± 2.6

21.2 ± 3.4

23.3 ± 3.0

22.9 ± 4.7

midLat

19.7 ± 4.2

19.7 ± 4.5

20.9 ± 5.1

17.2 ± 5.7

basLat

19.3 ± 4.1

20.4 ± 5.1

19.6 ± 6.0

17.7 ± 8.7

average

20.3 ± 2.5

20.5 ± 2.7

21.7 ± 2.8

19.9 ± 5.2

SrLS

basSept

0.82 ± 0.14a

0.85 ± 0.17a, b

0.97 ± 0.24b

P = 0.036

0.92 ± 0.16a, b

(s−1)

midSept

0.86 ± 0.14

0.87 ± 0.14

0.94 ± 0.14

0.88 ± 0.11

midLat

0.91 ± 0.15

0.86 ± 0.13

0.97 ± 0.17

0.89 ± 0.13

basLat

1.05 ± 0.19

1.08 ± 0.16

1.07 ± 0.18

1.18 ± 0.37

average

0.91 ± 0.12

0.91 ± 0.11

0.99 ± 0.12

0.96 ± 0.12

DL

basSept

30.7 ± 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)

midSept

17.6 ± 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

midLat

20.6 ± 4.0a, b

19.5 ± 7.2a

22.4 ± 5.0a, b

24.7 ± 5.8b

P = 0.044

basLat

33.9 ± 6.2

34.7 ± 9.3

35.7 ± 7.7

37.6 ± 9.9

average

25.7 ± 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

SC

Ant

18.3 ± 4.6a, b

15.6 ± 5.0a

20.4 ± 5.4b

P = 0.009

18.6 ± 3.3a, b

(%)

AntSept

24.9 ± 6.1

22.7 ± 6.1

22.0 ± 5.4

19.6 ± 6.8

Inf

9.8 (1.3–22.1)a

13.3 (3.8–25.2)a, b

14.4 (3.4–34.2)b

P = 0.048

14.7 (7.2–25.5)a, b

Lat

16.7 ± 5.7

17.0 ± 4.3

20.3 ± 6.2

17.7 ± 4.6

Post

12.1 ± 5.2a

P < 0.001

18.4 ± 5.8b, c

P = 0.005

21.2 ± 7.5b

14.3 ± 8.3a, c

P = 0.024

Sept

18.1 ± 5.3

17.4 ± 5.5

17.9 ± 4.7

14.7 ± 6.9

average

16.8 ± 3.0a

P = 0.040

17.4 ± 3.1a, b

19.3 ± 3.2b

16.3 ± 3.5a

P = 0.047

SrCS

Ant

1.02 ± 0.21

0.97 ± 0.16

1.09 ± 0.23

1.08 ± 0.23

(s−1)

AntSept

1.18 ± 0.30

1.12 ± 0.24

1.18 ± 0.28

1.00 ± 0.32

Inf

0.77 (0.43–1.07)a

0.85 (0.48–1.55)a, b

0.87 (0.60–1.51)a, b

0.93 (0.79–1.07)bP = 0.017

Lat

1.07 ± 0.18

0.99 ± 0.23

1.18 ± 0.28

1.10 ± 0.24

Post

1.06 ± 0.20

1.15 ± 0.24

1.25 ± 0.27

1.16 ± 0.25

Sept

0.92 ± 0.22

0.91 ± 0.21

0.94 ± 0.21

0.77 ± 0.23

average

1.00 ± 0.14

1.00 ± 0.14

1.09 ± 0.16

0.99 ± 0.19

SR

Ant

53.3 ± 18.9a

56.5 ± 19.7a, b

73.8 ± 23.4b

P = 0.007

64.2 ± 26.4a, b

(%)

AntSept

55.5 ± 17.6a

58.9 ± 20.1a, b

73.4 ± 21.8b

P = 0.036

76.2 ± 32.8b

P = 0.038

Inf

53.6 ± 20.4a

57.1 ± 21.4a, b

75.8 ± 28.4b

P = 0.008

62.9 ± 23.3a, b

Lat

54.6 ± 21.1a

P = 0.018

56.0 ± 21.7a

P = 0.048

76.4 ± 29.2b

59.4 ± 29.9a, b

Post

52.7 ± 19.4a

P = 0.004

56.8 ± 21.7a

P = 0.042

76.0 ± 26.2b

62.4 ± 27.0a, b

Sept

57.3 ± 18.2a

58.1 ± 23.7a, b

77.4 ± 26.0b

P = 0.023

71.8 ± 27.6a, b

average

54.5 ± 18.0a

P = 0.006

57.2 ± 20.1a

P = 0.037

75.5 ± 24.3b

65.5 ± 26.2a, b

SrRS

Ant

1.84 (1.17–2.98)a

1.99 (1.36–3.37)a, b

2.35 (1.01–3.46)bP = 0.007

1.94 (1.28–4.01)a, b

(s−1)

AntSept

1.85 ± 0.51

1.98 ± 0.51

2.26 ± 0.64

2.16 ± 0.83

Inf

1.86 (1.04–3.23)a

2.02 (1.37–3.23)a, b

2.41 (1.58–4.95)bP = 0.011

2.09 (1.27–3.50)a, b

Lat

2.22 (1.26–9.09)a

2.06 (1.36–3.47)a, b

2.50 (1.55–4.86)bP = 0.049

1.96 (0.96–4.25)a, cP = 0.041

Post

2.05 (1.15–6.86)a

2.05 (1.40–3.29)a, b

2.38 (1.56–3.19)bP = 0.021

2.05 (1.08–4.06)a, b

Sept

1.95 ± 0.51

2.00 ± 0.55

2.34 ± 0.57

2.21 ± 0.70

average

1.96 (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)