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

Table 7 Tissue Doppler parameters of the left ventricular free wall basal segment in healthy domestic swine according to their body weight

Body weight (kg)	Sm1 (meter/seconds)	Sm2 (meter/seconds)	Em (meter/seconds)	Am (meter/seconds)	Em/Am	RIVRT (milliseconds)	RIVRTp (milliseconds)	Number of animals
20-29	0.09 ± 0.05	0.08 ± 0.01	0.18 ± 0.04	0.10 ± 0.03	2.0 ± 0.56	52 ± 20	142 ± 22	11
30-39	0.06 ± 0.02	0.80 ± 0.01	0.17 ± 0.04	0.10 ± 0.03	1.8 ± 0.04	48 ± 16	140.5 ± 16	23
40-49	0.08 ± 0.03	0.09 ± 0.01	0.17 ± 0.04	0.12 ± 0.04	1.6 ± 0.50	55 ± 11	151 ± 17	18
50-59	0.07 ± 0.02	0.09 ± 0.01	0.17 ± 0.03	0.11 ± 0.04	1.7 ± 0.43	55 ± 12	171 ± 13	8
60-69	0.09 ± 0.02	0.11 ± 0.02	0.17 ± 0.03	0.15 ± 0.05	1.3 ± 0.44	43 ± 15	152 ± 24	8
70-79	0.09 ± 0.03	0.11 ± 0.01	0.19 ± 0.03	0.12 ± 0.03	1.6 ± 0.44	45 ± 21	175 ± 27	9
80-89	0.09 ± 0.03	0.10 ± 0.03	0.19 ± 0.02	0.13 ± 0.04	1.8 ± 0.47	49 ± 14	159 ± 22	12
90-99	0.10 ± 0.03	0.11 ± 0.02	0.16 ± 0.03	0.13 ± 0.03	1.4 ± 0.28	50 ± 16	167 ± 27	10
100-109	0.11 ± 0.04	0.10 ± 0.02	0.19 ± 0.02	0.12 ± 0.03	1.7 ± 0.47	70 ± 29	171 ± 46	11
110-119	0.10 ± 0.03	0.11 ± 0.02	0.20 ± 0.02	0.11 ± 0.03	1.9 ± 0.47	71 ± 24	179 ± 35	16
120-129	0.10 ± 0.04	0.09 ± 0.01	0.17 ± 0.03	0.1 ± 0.02	1.7 ± 0.24	87 ± 21	189 ± 21	9
130-139	0.10 ± 0.03	0.10 ± 0.01	0.17 ± 0.04	0.11 ± 0.03	1.6 ± 0.65	85 ± 63	181 ± 22	21
140-149	0.10 ± 0.04	0.11 ± 0.02	0.16 ± 0.03	0.11 ± 0.04	1.6 ± 0.55	86 ± 24	183 ± 25	6
150-160	0.10 ± 0.04	0.10 ± 0.02	0.18 ± 0.02	0.13 ± 0.04	1.4 ± 0.31	164 ± 17	186 ± 1	8

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.
Values are displayed as mean ± standard deviation.
N = 170.

ISSN: 1751-0147