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Table 5 Left ventricular myocardial strain and torsion

From: Early-stage heart failure with preserved ejection fraction in the pig: a cardiovascular magnetic resonance study

  Controls (n = 6) DOCA (n = 5) Controls vs. DOCA
Parameter Rest Stress p Rest Stress p prest pstress
CCmin,LV (%) −16 ± 1 −17 ± 2 0.887 −17 ± 2 −18 ± 3 0.404 0.728 0.284
RRmax,LV (%) 34 ± 12 39 ± 11 0.163 33 ± 4 35 ± 5 0.533 0.764 0.481
LLmin,LV (%) −13 ± 2 −13 ± 3 0.495 −12 ± 1 −11 ± 2 0.342 0.187 0.337
torsionmax (°) 4.6 ± 1.4 5.7 ± 1.6 0.560 6.1 ± 0.9 7.0 ± 1.2 0.061 0.098 0.231
CC ratemin,LV (% · s−1) −90 ± 11 −139 ± 19 0.009 −96 ± 13 −155 ± 16 < 0.001 0.436 0.182
RR ratemax,LV (% · s−1) 185 ± 52 337 ± 66 < 0.001 188 ± 36 309 ± 81 0.015 0.908 0.540
LL ratemin (% · s−1) −77 ± 11 −120 ± 15 0.002 −68 ± 6 −95 ± 13 0.004 0.120 0.024
torsion ratemax (° · s−1) 29 ± 3 47 ± 15 0.044 44 ± 8 62 ± 17 0.103 0.002 0.193
CC ratemax,LV (% · s−1) 83 ± 4 119 ± 30 0.023 89 ± 11 129 ± 20 0.005 0.240 0.542
RR ratemin,LV (% s−1) −190 ± 81 −229 ± 90 0.132 −192 ± 41 −222 ± 53 0.348 0.956 0.881
LL ratemax (% · s−1) 51 ± 19 71 ± 17 0.104 47 ± 10 58 ± 10 0.143 0.670 0.171
torsion ratemin (° · s−1) −24 ± 6 −43 ± 13 0.009 −28 ± 9 −28 ± 7 0.921 0.457 0.072
  1. CC min,LV minimal left ventricular circumferencial strain, RR max,LV maximal left ventricular radial strain, LL min,LV minimal left ventricular longitudinal strain, torsion max maximal left ventricular torsion, CC rate min,LV systolic minimum circumferencial strain rate, RR rate max,LV systolic maximal radial strain rate, LL rate min systolic minimal longitudinal strain rate, torsion rate min systolic minimal torsion rate, CC rate max,LV early diastolic maximal circumferencial strain rate, RR rate min,LV early diastolic minimal radial strain rate, LL rate max early diastolic maximal longitudinal strain rate, torsion rate max early diastolic maximal torsion rate
  2. p is related to the rest-stress comparison within each group. prest and pstress relate to group comparisons at rest and stress, respectively