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Table 8 Tissue Doppler Imaging parameters of the left ventricular free wall basal segment in healthy domestic swine related to their age

From: Normal electrocardiographic and echocardiographic (M-mode and two-dimensional) values in Polish Landrace pigs

Age (months)

Sm1 (meter/seconds)

Sm2 (meter/seconds)

Em (meter/seconds)

Am (meter/seconds)

Em/Am

RIVRT (milliseconds)

RIVRTp (milliseconds)

Number of animals

2

0.08 ± 0.05

0.07 ± 0.01

0.18 ± 0.04

0.09 ± 0.03

2.0 ± 0.51

50 ± 17

140 ± 21

19

3

0.07 ± 0.03

0.08 ± 0.01

0.17 ± 0.04

0.11 ± 0.03

1.8 ± 0.04

54 ± 17

148 ± 16

33

4

0.08 ± 0.03

0.10 ± 0.01

0.17 ± 0.04

0.13 ± 0.04

1.5 ± 0.52

49 ± 18

167 ± 25

25

5

0.09 ± 003

0.11 ± 0.02

0.17 ± 0.03

0.13 ± 0.04

1.6 ± 0.45

50 ± 14

159 ± 34

24

6

0.11 ± 0.03

0.10 ± 0.02

0.17 ± 0.03

0.11 ± 0.03

1.8 ± 0.44

75 ± 25

183 ± 27

32

7

0.10 ± 0.03

0.10 ± 0.01

019 ± 0.03

0.11 ± 0.03

1.6 ± 0.62

86 ± 54

182 ± 23

29

8

0.12 ± 0.04

0.11 ± 0.03

0.19 ± 0.02

0.13 ± 0.04

1.5 ± 0.30

65 ± 23

164 ± 16

8

  1. Waves: Sm1 – early systolic, Sm2 – systolic, Em – early diastolic, Am – late diastolic; RIVRT – isovolumic relaxation time, RIVRTp – time from the onset of QRS complex to the peak of the Sm2 wave.
  2. Values are displayed as mean ± standard deviation.
  3. N = 170.