Skip to main content

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
Back to article page

Journal of Cardiovascular Magnetic Resonance

ISSN: 1532-429X

Contact us