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

Leroux, Aurélia A.; Moonen, Marie; Farnir, Frédéric; Deleuze, Stefan; Sandersen, Charlotte; Amory, Hélène

doi:10.1186/s12917-020-02277-8

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

Variables	Segment	Observed Mean ± SD	95% CI of the mean	Between-cycle CV (%)	Between-day CV (%)
Sc-S (%)	Antsept	−27.26 ± 5.43	− 30.35 – − 23.17	18.38	17.93
	Ant	− 21.85 ± 5.61	−26.08 – − 17.62	24.36	25.31
	Lat	−15.16 ± 5.73	−19.48 – − 10.84	37.79	40.87
	Post	−17.36 ± 6.85 ^a	− 22.52 – − 12.20	37.99	43.11
	Inf	−23.11 ± 6.21	−27.79 – − 18.43	26.83	26.27
	Sept	−26.84 ± 5.71	− 31.15 – − 22.53	19.83	19.38
	Average	−21.93 ± 3.30	− 24.42 – − 19.44	13.98	14.46
Sr-S (%)	Antsept	72.55 ± 18.01	58.97–86.13	24.14	24.55
	Ant	71.72 ± 21.28	55.67–87.77	28.94	29.62
	Lat	77.25 ± 22.32	60.42–94.08	28.33	29.35
	Post	81.35 ± 22.18	64.63–98.07	26.87	28.33
	Inf	82.37 ± 20.62	66.82–97.92	24.01	25.45
	Sept	80.12 ± 18.25	66.36–93.88	21.51	22.49
	Average	77.56 ± 17.93	64.04–91.08	21.81	22.88
SRc-S (1/s)	Antsept	−2.13 ± 0.47	− 2.48 – −1.78	20.17	21.61
	Ant	−1.93 ± 0.58	−2.37 – − 1.49	27.00	28.45
	Lat	−1.66 ± 0.51	−2.04 – − 1.28	27.78	31.50
	Post	−2.13 ± 0.65	−2.62 – − 1.64	29.35	29.81
	Inf	−2.22 ± 0.61	−2.68 – − 1.76	25.14	26.16
	Sept	−2.29 ± 0.50	−2.67 – −1.91	20.14	22.32
	Average	−2.06 ± 0.29	−2.28 - -1.84	13.22	14.10
SRc-E (1/s)	Antsept	3.58 ± 0.92 ^a	2.89–4.27	25.21	26.47
	Ant	3.32 ± 1.03 ^a	2.54–4.10	29.10	33.41
	Lat	2.71 ± 0.88	2.05–3.37	31.54	35.63
	Post	3.25 ± 0.99	2.50–4.00	29.12	31.07
	Inf	2.95 ± 0.87	2.29–3.61	26.97	29.01
	Sept	3.38 ± 0.97	2.65–4.11	26.28	29.36
	Average	3.20 ± 0.56	2.78–3.62	15.85	17.94
SRc-A (1/s)	Antsept	1.75 ± 0.60 ^a	1.30–2.20	31.03	35.65
	Ant	1.41 ± 0.74	0.85–1.97	46.73	53.29
	Lat	1.05 ± 0.63	0.57–1.53	53.44	57.01
	Post	1.28 ± 0.73	0.73–1.83	55.11	58.34
	Inf	1.51 ± 0.73	0.96–2.06	39.95	47.95
	Sept	1.85 ± 0.74	1.29–2.41	35.00	39.24
	Average	1.48 ± 0.39 ^a	1.19–1.77	22.25	28.19
SRr-S (1/s)	Antsept	2.88 ± 0.80	2.28–3.48	24.82	24.93
	Ant	3.35 ± 0.97	2.62–4.08	27.10	27.23
	Lat	3.49 ± 0.92	2.80–4.18	24.20	24.65
	Post	3.61 ± 0.91	2.92–4.30	23.26	24.55
	Inf	3.54 ± 0.87	2.88–4.20	22.55	23.00
	Sept	3.11 ± 0.77	2.53–3.69	22.09	23.04
	Average	3.33 ± 0.68	2.82–3.84	18.52	19.07
SRr-E (1/s)	Antsept	−3.23 ± 0.99 ^a	−3.98 – −2.48	28.26	30.35
	Ant	−3.21 ± 1.19	−4.11 – − 2.31	33.24	37.17
	Lat	−3.30 ± 1.21	−4.21 – −2.39	33.33	38.25
	Post	−3.43 ± 1.16	− 4.30 – −2.56	31.25	35.39
	Inf	−3.43 ± 1.02	−4.20 – −2.66	27.28	31.84
	Sept	−3.29 ± 0.92 ^a	−3.98 – −2.60	26.81	30.89
	Average	−3.31 ± 0.91	−4.00 – −2.62	26.21	29.35
SRr-A (1/s)	Antsept	−2.28 ± 1.06	−3.08 – −1.48	42.56	46.43
	Ant	−2.45 ± 1.02 ^a	−3.22 – −1.68	41.41	47.22
	Lat	−2.71 ± 1.02 ^a	−3.48 – −1.94	34.61	41.29
	Post	−2.84 ± 1.06 ^a	−3.64 – − 2.04	33.60	42.15
	Inf	−2.88 ± 1.08 ^a	−3.69 – − 2.07	34.50	41.87
	Sept	−2.60 ± 1.04 ^a	−3.38 – −1.82	35.41	42.33
	Average	−2.59 ± 0.89 ^a	−3.26 – −1.92	30.742	37.98
Dr-S (mm)	Antsept	5.90 ± 1.74	4.59–7.21	29.13	30.59
	Ant	7.50 ± 2.28	5.78–9.22	31.36	32.15
	Lat	9.10 ± 1.88	7.68–10.52	20.89	22.19
	Post	8.99 ± 1.91	7.55–10.43	20.22	22.11
	Inf	7.77 ± 2.19	6.12–9.42	26.91	29.07
	Sept	6.46 ± 1.56	5.28–7.64	23.11	25.73
	Average	7.62 ± 0.96	6.90–8.34	11.74	13.26
Rot-S (deg)	Antsept	8.91 ± 2.65 ^a	6.91–10.91	32.47	34.99
	Ant	10.58 ± 2.43	8.75–12.41	22.55	24.69
	Lat	9.53 ± 2.69	7.50–11.56	28.15	30.17
	Post	7.22 ± 2.95	5.00–9.44	40.29	41.97
	Inf	6.28 ± 3.08	3.96–8.60	45.29	47.76
	Sept	7.01 ± 2.75 ^a	4.94–9.08	36.70	40.65
	Average	8.23 ± 2.37	6.44–10.02	27.39	29.91
RotR-S (deg /s)	Antsept	97.89 ± 26.94	77.58–118.20	25.47	26.64
	Ant	113.01 ± 22.49	96.05–129.97	18.51	21.60
	Lat	112.02 ± 27.68 ^a	91.15–132.89	24.48	25.88
	Post	93.11 ± 25.27 ^a	74.06–112.16	27.93	30.29
	Inf	83.43 ± 25.99	63.83–103.03	30.35	31.17
	Sept	85.30 ± 25.72	65.91–104.69	30.71	31.12
	Average	97.47 ± 20.89	81.72–113.22	20.36	22.17
RotR-E (deg /s)	Antsept	−73.18 ± 31.71	−97.09 – −49.27	42.78	46.40
	Ant	−77.62 ± 30.53	−100.64 – −54.60	36.66	40.06
	Lat	−83.60 ± 34.68 ^a	− 109.75 – −57.45	41.87	47.22
	Post	−79.21 ± 37.71	− 107.64 – −50.78	46.72	49.43
	Inf	−80.36 ± 36.85	−108.14 – −52.58	46.88	47.99
	Sept	−73.94 ± 33.03	−98.84 – −49.04	47.81	47.37
	Average	−77.98 ± 26.08	−97.64 – −58.32	31.49	35.50
RotR-A (deg /s)	Antsept	−55.94 ± 29.45	−78.15 – −33.73	50.14	51.96
	Ant	−60.62 ± 28.93 ^a	−82.43 – −38.81	44.53	47.35
	Lat	−67.85 ± 33.02	−92.75 – −42.95	47.21	50.23
	Post	−62.27 ± 33.96	−87.88 – −36.66	55.86	58.53
	Inf	−55.57 ± 31.08	−79.00 – −32.14	54.72	58.43
	Sept	−50.52 ± 29.02	−72.40 – −28.64	58.75	58.81
	Average	−59.22 ± 23.09	−76.63 – −41.81	40.61	42.58

^a Day-effect significantly observed with p < 0.05 (two-way ANOVA)
-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

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