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Table 4 Global values of ventricular mechanical contraction analysis obtained from left ventricular short axis (basal, middle and apical)

From: Comprehensive left ventricular mechanics analysis by speckle tracking echocardiography in Chagas disease

Variables Chagas Controls
Ch1A (n = 8) Ch1B (n = 13) Ch2 (n = 17) Ch3 (n = 9) C1 (n = 58) C2 (n = 7) C3 (n = 19)
SAX – MV
 CS (%) −21.11 ± 4.57 −18.79 ± 3.47 −13.12 ± 2.67 −9.84 ± 2.52 −18.42 ± 2.96 −13.38 ± 2.28 −8.83 ± 2.81
 RS (%) 48.92 ± 16.90 53.89 ± 21.25 34.23 ± 22.37 24.84 ± 11.48 47.50 ± 14.64 26.01 ± 15.36 20.91 ± 13.38
 CSR (1/s) −1.56 ± 0.18 −1.50 ± 0.38 −1.04 ± 0.22 −0.82 ± 0.18 −1.47 ± 0.29 −1.17 ± 0.26 −0.83 ± 0.28
 RSR (1/s) 2.00 ± 0.35 2.12 ± 0.58 1.46 ± 0.50 1.44 ± 0.46 2.00 ± 0.44 1.73 ± 0.44 1.50 ± 0.62
 RD (mm) 6.93 ± 1.37 6.45 ± 1.14 4.84 ± 1.16 4.39 ± 1.43 6.44 ± 1.03 4.64 ± 0.96 3.67 ± 1.23
 Rot (o) −8.03 ± 4.64 −6.15 ± 2.55 −4.84 ± 2.41 −2.50 ± 2.38 −5.86 ± 2.38 −4.66 ± 1.63 −3.35 ± 2.50
 RotVel (o/s) −66.66 ± 12.87 −52.61 ± 13.66 −41.13 ± 18.90 −27.85 ± 21.27 −64.91 ± 21.11 −48.07 ± 11.20 −33.33 ± 19.40
SAX – PM
 CS (%) −20.61 ± 4.43 −18.49 ± 2.38 −12.96 ± 3.52 −9.13 ± 1.67 −19.05 ± 3.52 −12.42 ± 2.30 −8.03 ± 2.10
 RS (%) 57.19 ± 20.60 50.00 ± 18.72 37.92 ± 17.35 17.11 ± 11.38 50.63 ± 15.37 28.67 ± 15.21 12.88 ± 8.70
 CSR (1/s) −1.48 ± 0.24 −1.36 ± 0.24 −1.07 ± 0.26 −0.82 ± 0.33 −1.41 ± 0.25 −1.03 ± 0.18 −0.73 ± 0.18
 RSR (1/s) 2.00 ± 0.46 1.92 ± 0.59 1.52 ± 0.43 1.26 ± 0.45 1.85 ± 0.45 1.57 ± 0.49 1.23 ± 0.62
 RD (mm) 7.14 ± 1.75 6.20 ± 0.76 4.90 ± 1.49 3.47 ± 0.80 6.43 ± 1.06 4.40 ± 0.83 3.14 ± 1.17
SAX – AP
 CS (%) −27.64 ± 6.06 −25.14 ± 4.06 −17.13 ± 4.04 −9.26 ± 4.96 −26.20 ± 6.41 −15.22 ± 3.55 −7.48 ± 3.25
 RS (%) 24.20 ± 14.43 15.44 ± 14.01 16.57 ± 12.70 3.62 ± 10.61 25.92 ± 20.46 18.01 ± 18.51 7.86 ± 6.43
 CSR (1/s) −1.51 ± 0.34 −1.63 ± 0.33 −1.09 ± 0.38 −0.71 ± 0.27 −1.76 ± 0.43 −1.10 ± 0.32 −0.68 ± 0.26
 RSR (1/s) 1.32 ± 0.46 1.46 ± 0.64 1.19 ± 0.53 1.13 ± 0.77 1.53 ± 0.79 1.13 ± 0.54 0.87 ± 0.37
 RD (mm) 4.89 ± 1.14 4.55 ± 1.18 4.13 ± 1.28 2.49 ± 0.83a 5.43 ± 1.38 3.47 ± 0.99 1.54 ± 1.18
 Rot (o) 12.73 ± 2.95 12.89 ± 3.91 6.47 ± 3.71 3.24 ± 4.51 13.15 ± 4.18 6.05 ± 2.99 3.00 ± 3.26
 RotVel (o/s) 67.65 ± 15.52 80.34 ± 25.54 44.88 ± 15.64 25.65 ± 35.00 85.82 ± 29.84 47.57 ± 27.36 31.25 ± 20.89
  1. Data expressed as mean ± SD. SAX-MV short axis, mitral valve, SAX-PM short axis, papillary muscles, SAX-AP short axis, apical, CS circumferential strain, RS radial strain, CSR circumferential strain rate, RSR radial strain rate, RD radial displacement, Rot rotation, Rot Vel rotational velocity
  2. aStudent t-test, p = 0.04, vs. C3