Introduction
Methods
Study Subjects
Echocardiography
Conventional Echocardiography
Tissue Doppler Imaging
Speckle Tracking
Statistical Analysis
Results
N = 36 | |
---|---|
Males (%) | 21 (58) |
Age (months) | 7.5 [5.5–10.9] |
Weight (kg) | 7.4 ± 1.2 |
Height (cm) | 69.3 [66.8–71.3] |
BMI (m2) | 15 ± 1.8 |
Preoperative SatO2 (%) | 90 [85–94] |
Previous shunt (number; %) | 6 (16.7) |
Transannular patch (number; %) | 25 (69) |
Cardiopulmonary bypass time (mins) | 84 [75–98] |
Pleural effusion after surgery (days) | 1 [1–4] |
Left Ventricular Performance
Preoperatively | Before discharge | Difference (post–pre) | p value | |
---|---|---|---|---|
Mean ± SD or Median [IQR] | Mean ± SD or Median [IQR] | Mean ± SD or Median [IQR] | ||
Systolic | ||||
FS (%) | 37.1 ± 7.1 | 34.4 ± 6.7 | − 2.5 ± 7.1 | 0.14 |
TDI LV | ||||
Lateral wall | ||||
S′ (cm/s) | 5.2 ± 1.4 | 5.8 ± 1.6 | 0.6 ± 2.1 | 0.12 |
IVS | ||||
S′ (cm/s) | 5.3 [4.0–6.7] | 3.9 ± 1.2 | − 1.4 ± 1.8 | < 0.001* |
Diastolic | ||||
MV Doppler flow | ||||
E (m/s) | 1.0 ± 0.3 | 1.0 [0.8–1.2] | 0.04 ± 0.4 | 0.42 |
A (m/s) | 0.8 ± 0.2 | 0.8 ± 0.2 | − 0.1 ± 0.3 | 0.06 |
E/A | 1.1 [1.0–1.2] | 1.4 ± 0.5 | 0.3 ± 0.5 | 0.006* |
TDI LV | ||||
Lateral wall | ||||
E′ (cm/s) | 9.8 ± 3.4 | 9.7 ± 2.7 | − 0.006 ± 4.1 | 0.99 |
A′ (cm/s) | 5.9 ± 1.8 | 6.0 ± 2.3 | 0.4 ± 3.1 | 0.50 |
E/E′ | 9.5 [8.2–12.3] | 10.2 [8.7–12.3] | 0.4 ± 4.9 | 0.59 |
IVS | ||||
E′ (cm/s) | 8.9 ± 2.7 | 7.6 ± 2.5 | − 1.4 ± 3.3 | 0.03* |
A′ (cm/s) | 7.6 ± 2.8 | 5.0 [3.2–7.8] | − 2.6 ± 2.8 | 0.001* |
Preoperatively | Before discharge | Difference (post–pre) | p value | |
---|---|---|---|---|
Mean ± SD or Median [IQR] | Mean ± SD or Median [IQR] | Mean ± SD or Median [IQR] | ||
Global longitudinal peak strain (%) | ||||
− 18.3 ± 3.4 | − 14.2 ± 4.1 | 3.4 ± 5.1 | 0.003* | |
Time to global peak strain (msec) | ||||
288.9 ± 29.8 | 267.2 ± 33.8 | − 20.7 ± 47.1 | 0.04* | |
Regional peak strain (%) | ||||
BS | − 16.4 ± 3.9 | − 12.8 ± 4.2 | − 3.2 ± 5.9 | 0.012* |
MS | − 17.3 ± 3.3 | − 15.5 ± 3.4 | − 1.9 ± 4.7 | 0.065 |
AS | − 25.2 [− 28.8 to − 22.1] | − 9.9 ± 8.1 | − 16.9 ± 11.7 | < 0.001* |
AL | − 17.2 [24–14.7] | − 10.2 [16.8–7.1] | − 5.7 ± 12.9 | 0.07 |
ML | − 12.6 ± 4.8 | − 10 [16.4–8.4] | − 0.5 ± 8.2 | 0.903 |
BL | − 25.9 ± 5.8 | − 23.4 ± 7 | − 1.7 ± 10.4 | 0.439 |
Right Ventricular Performance
Preoperatively | Before discharge | Difference (post–pre) | p value | |
---|---|---|---|---|
Mean ± SD or Median [IQR] | Mean ± SD or Median [IQR] | Mean ± SD or Median [IQR] | ||
Systolic | ||||
TAPSE | 12.9 ± 2.6 | 6.5 ± 1.6 | − 6.5 ± 3.1 | < 0.001* |
TDI RV | ||||
Free wall | ||||
S′ (cm/s) | 9.8 ± 2.0 | 3.7 [3.7–5.6] | − 4.9 ± 2.5 | < 0.001* |
Diastolic | ||||
TV Doppler flow | ||||
E (m/s) | 0.9 ± 0.2 | 1.0 ± 0.2 | 0.06 ± 0.3 | 0.21 |
A (m/s) | 0.8 ± 0.3 | 0.8 ± 0.2 | − 0.1 ± 0.5 | 0.41 |
E/A | 1.2 ± 0.5 | 1.1 [0.9–1.6] | 0.2 ± 1.0 | 0.68 |
TDI RV | ||||
Free wall | ||||
E′ (cm/s) | 16.8 ± 7.1 | 6.7 [5.0–8.0] | − 10.2 ± 6.4 | < 0.001* |
A′ (cm/s) | 12.9 ± 4.2 | 5.4 ± 3.3 | − 6.8 ± 4.7 | < 0.001* |
E/E′ | 6.1 ± 2.4 | 15.5 ± 5.1 | 9.8 ± 5.2 | < 0.001* |
Relation to Clinical Parameters
Intraobserver and Interobserver Variability
Intraobserver agreement | Interobserver agreement | |||
---|---|---|---|---|
ICC | 95% CI | ICC | 95% CI | |
TDI | ||||
LV Lateral wall | ||||
S′ | 0.987 | 0.973–0.994 | 0.855 | 0.690–0.932 |
E′ | 0.996 | 0.992–0.998 | 0.924 | 0.244–0.979 |
A′ | 1 | 0.162 | ||
IVS | ||||
S′ | 0.988 | 0.963–0.995 | 0.972 | 0.835–0.991 |
E′ | 0.996 | 0.992–0.998 | 0.919 | 0.412–0.976 |
A′ | 0.994 | 0.987–0.997 | 0.961 | 0.728–0.988 |
RV Lateral wall | ||||
S′ | 0.994 | 0.988–0.997 | 0.987 | 0.850–0.996 |
E′ | 0.998 | 0.995–0.999 | 0.977 | 0.816–0.993 |
A′ | 0.782 | 0.584–0.895 | -0.002 | |
Speckle tracking | ||||
GLS | 0.941 | 0.870–0.972 | 0.892 | 0.761–0.950 |
TGPS | 0.969 | 0.935–0.985 | 0.961 | 0.917–0.981 |