Introduction
Methods
Study design and population
Procedures
Conventional 2D echocardiography
Myocardial speckle tracking
Temporal analysis
Statistical analysis
Results
Conventional structure and function
Parameter | Mean ± SD | p value | |
---|---|---|---|
NH&PI | CC | ||
Left ventricle | |||
IVSWTd (mm) | 10 ± 1 | 9 ± 1 | 0.006* |
PWTd (mm) | 10 ± 1 | 9 ± 1 | 0.012* |
LVIDd [mm/(m2)0.5] | 37 ± 3 | 38 ± 2 | 0.229 |
LVIDs [mm/(m2)0.5] | 26 ± 2 | 26 ± 2 | 0.878 |
LV mass [g/(m2)2.7] | 42 ± 9 | 37 ± 4 | 0.017* |
MWT (mm) | 10 ± 0.7 | 9 ± 0.4 | < 0.001* |
RWT | 0.35 ± 0.04 | 0.31 ± 0.03 | 0.003* |
LVEDV [ml/(m2)1.5] | 47 ± 8 | 47 ± 7 | 0.873 |
LVESV [ml/(m2)1.5] | 19 ± 4 | 20 ± 4 | 0.566 |
LV SV (ml) | 94 ± 19 | 89 ± 13 | 0.27 |
LV EF (%) | 59 ± 4 | 58 ± 5 | 0.515 |
Septal S′ (cm/s) | 9 ± 1.3 | 9.3 ± 1.1 | 0.378 |
Septal E′ (cm/s) | 11.7 ± 1.5 | 12.5 ± 2.4 | 0.191 |
Septal A′ (cm/s) | 7.5 ± 1.6 | 7.8 ± 1.6 | 0.575 |
Lateral S′ (cm/s) | 11.5 ± 2.9 | 11.6 ± 2.4 | 0.861 |
Lateral E′ (cm/s) | 17 ± 3.4 | 18.5 ± 2.7 | 0.108 |
Lateral A′ (cm/s) | 7.7 ± 2.7 | 6.6 ± 2 | 0.120 |
Right ventricle | |||
RVOTPLAX index [mm/(m2)0.5] | 23 ± 2 | 23 ± 2 | 0.981 |
RVOT1 index [mm/(m2)0.5] | 23 ± 3 | 24 ± 3 | 0.476 |
RVOT2 index [mm/(m2)0.5] | 18 ± 2 | 19 ± 3 | 0.212 |
RVD1 index [mm/(m2)0.5] | 29 ± 2 | 30 ± 4 | 0.229 |
RVD2 index [mm/(m2)0.5] | 23 ± 3 | 21 ± 3 | 0.085 |
RVD3 index [mm/(m2)0.5] | 56 ± 13 | 62 ± 6 | 0.054 |
RVDa Index (cm/m2) | 13 ± 2 | 13 ± 2 | 0.399 |
RVSa Index (cm/m2) | 7 ± 1 | 7 ± 2 | 0.809 |
RVWT (mm) | 5 ± 1 | 4 ± 1 | 0.016* |
TAPSE (mm) | 24 ± 4 | 25 ± 4 | 0.742 |
RVFAC (%) | 47 ± 6 | 49 ± 7.2 | 0.365 |
RV S′ (cm/s) | 15 ± 2 | 14 ± 2 | 0.442 |
RV E′ (cm/s) | 14 ± 3 | 15 ± 3 | 0.27 |
RV A′ (cm/s) | 11 ± 2 | 10 ± 3 | 0.161 |
Mechanics
Peak data
Parameter | Mean ± SD | p value | |
---|---|---|---|
NH&PI | CC | ||
LV longitudinal | |||
ε (%) | − 19 ± 2 | − 19 ± 2 | 0.897 |
Time to peak ε (s) | 0.38 ± 0.03 | 0.37 ± 0.03 | 0.325 |
SRS (S−1) | − 0.93 ± 0.09 | − 0.95 ± 0.1 | 0.549 |
SRE (S−1) | 1.29 ± 0.18 | 1.36 ± 0.18 | 0.229 |
SRA (S−1) | 0.67 ± 0.16 | 0.62 ± 0.14 | 0.294 |
LV circumferential | |||
ε (%) | − 20 ± 3 | − 21 ± 2 | 0.094 |
Time to peak ε (s) | 0.38 ± 0.03 | 0.37 ± 0.03 | 0.785 |
SRS (S−1) | − 1.09 ± 0.2 | − 1.17 ± 0.12 | 0.154 |
SRE (S−1) | 1.52 ± 0.35 | 1.8 ± 0.37 | 0.023* |
SRA (S−1) | 0.43 ± 0.13 | 0.45 ± 0.09 | 0.659 |
ε mid (%) | − 20 ± 3 | − 21 ± 2 | 0.029* |
Mid SRS (S−1) | − 1.11 ± 0.21 | − 1.18 ± 0.16 | 0.261 |
Mid SRE (S−1) | 1.44 ± 0.34 | 1.7 ± 0.38 | 0.019* |
Mid SRA (S−1) | 0.51 ± 0.12 | 0.5 ± 0.14 | 0.973 |
ε basal (%) | − 20 ± 4 | − 21 ± 3 | 0.347 |
Basal SRS (S−1) | − 1.14 ± 0.2 | − 1.21 ± 0.14 | 0.222 |
Basal SRE (S−1) | 1.69 ± 0.51 | 1.91 ± 0.45 | 0.153 |
Basal SRA (S−1) | 0.4 ± 0.21 | 0.39 ± 0.09 | 0.703 |
LV radial | |||
ε (%) | 43 ± 14 | 50 ± 12 | 0.112 |
Time to peak ε (s) | 0.41 ± 0.04 | 0.40 ± 0.5 | 0.697 |
SRS (S−1) | 1.57 ± 0.31 | 1.66 ± 0.34 | 0.371 |
SRE (S−1) | − 1.79 ± 0.34 | − 2.1 ± 0.43 | 0.013* |
SRA (S−1) | − 1.01 ± 0.56 | − 0.94 ± 0.33 | 0.87 |
ε mid (%) | 43 ± 18 | 51 ± 16 | 0.13 |
Mid SRS (S−1) | 1.71 ± 0.47 | 1.68 ± 0.37 | 0.825 |
Mid SRE (S−1) | − 1.99 ± 0.57 | − 2.33 ± 0.81 | 0.122 |
Mid SRA (S−1) | − 1.12 ± 0.66 | − 0.96 ± 0.45 | 0.367 |
ε basal (%) | 43 ± 4 | 58 ± 3 | 0.195 |
Basal SRS (S−1) | 1.81 ± 0.46 | 1.93 ± 0.55 | 0.434 |
Basal SRE (S−1) | − 1.6 ± 0.53 | − 1.87 ± 0.53 | 0.099 |
Basal SRA (S−1) | − 0.91 ± 0.57 | − 0.93 ± 0.4 | 0.917 |
LV rotation | |||
Apical rotation (°) | 7.1 ± 3.8 | 9.3 ± 3.6 | 0.054 |
Basal rotation (°) | − 6.9 ± 2.6 | − 6.7 ± 3.5 | 0.873 |
Twist (°) | 13.4 ± 4.6 | 15.6 ± 5.1 | 0.159 |
RV longitudinal | |||
ε (%) | − 27 ± 3 | − 27 ± 4 | 0.857 |
Time to peak ε (s) | 0.39 ± 0.03 | 0.38 ± 0.03 | 0.252 |
SRS (S−1) | − 1.24 ± 0.2 | − 1.31 ± 0.21 | 0.266 |
SRE (S−1) | 1.60 ± 0.35 | 1.56 ± 0.36 | 0.771 |
SRA (S−1) | 0.82 ± 0.26 | 0.84 ± 0.28 | 0.642 |