TABLE 3: Tissue Doppler Imaging findings.

Variable	Control group	Chagas group	p value
	(n=72)	(n=194)
Lateral basal wall of the RV
s´ (cm/sec)	13.4 ± 3.52	13.8 ± 2.27	0.96
ICT (msec)	80.46 ± 21.4	74.96 ± 17.3	0.03
IRT (msec)	45.4 ± 24.6	63.6 ± 27.6	0.0004
e´ (cm/sec)	13.5 (11.0-16.0)	13.0 (11.0-15.0)	0.50
a´ (cm/sec)	13.0 (10.0-16.5)	13.0 (11.0-15.0)	0.59
e´/a´ ratio	0.94 (0.77-1.33)	1.0 (0.79-1.29)	0.90
RIMP (sec x cm-1)	0.29 ± 0.24	0.40 ± 0.20	0.0003
Lateral E/e´ ratio	5 (4- 6)	6 (4-7)	0.46
ICT Peak Velocity (cm/sec)	12.0 (9.5-14.0)	12.0 (10.0-14.0)	0.88
Lateral basal wall of the LV
s´ (cm/sec)	10.2 ± 3.6	10.3 ± 2.7	0.014
ICT (msec)	86.1 ± 25.6	78.8 ± 18.9	0.024
IRT (msec)	68.9 ± 23.4	75.3 ± 18.6	0.026
e´ (cm/sec)	13.9 ± 4.76	13.9 ± 3.8	0.65
a´ (cm/sec)	9.2 ± 3.5	10.9 ± 2.9	0.0002
e´/a´ ratio	1.5 (1.1-2.0)	1.3 (1.0-1.6)	0.0029
Lateral LIMP (sec x cm-1)	0.42 ± 0.41	0.49 ± 0.43	0.19
Lateral E/e´ ratio	5 (4-6)	5 (4-6)	0.77
ICT peak velocity (cm/sec)	6.37 ± 2.5	8.11 ± 3.5	0.06
Interventricular basal septum
s´ (cm/sec)	8.9 ± 2.7	8.7 ± 1.8	0.03
ICT (msec)	76.9 ± 22.2	76.6 ± 19.6	0.91
IRT (msec)	70.9 ± 27.9	86.3 ± 22.9	0.0001
e´ (cm/sec)	11.1 ± 3.8	10.5 ± 2.7	0.03
a´ (cm/sec)	8.9 ± 2.91	9.5 ± 2.0	0.12
e´/a´ ratio	1.22 (1.09-1.75)	1.05 (0.83-1.37)	0.01
Septal LIMP (sec x cm-1)	0.52 ± 0.44	0.78 ± 0.39	0.0001
Septal E/e´ ratio	6 (5-7)	6.7 (6-8)	0.079
ICT peak velocity (cm/sec)	6.25 ± 2.0	7.34 ± 3.3	0.17

Values are expressed as absolute numbers (%), means ± SD, or medians (interquartile ranges).

IVS: interventricular septum, s´: myocardial contraction, a´: myocardial late diastolic velocity, e´: myocardial early diastolic velocity, ICT: isovolumic contraction time, IRT: isovolumic relaxation time, RIMP: right ventricular index of myocardial performance, LIMP: left ventricular index of myocardial performance, E: peak early diastolic flow velocity, RV: right ventricle, LV: left ventricle.