Table 3.
RV measures calculated by 2D-STE before and after BPV in children with PS.
| Variables | Before BPV | After BPV | |||
|---|---|---|---|---|---|
| 1 day | 1 month | 3 months | P value | ||
| Strain | |||||
| Global | -16.11 ± 5.37 | -17.12 ± 5.36 | -17.14 ± 4.67 | -18.88 ± 5.12 | 0.191 |
| Apical lateral | -17.10 ± 10.91 | -16.50 ± 7.13 | -18.95 ± 9.44 | -25.54 ± 11.35 | 0.004 |
| Middle lateral | -19.67 ± 12.00 | -15.64 ± 7.62 | -16.47 ± 6.51 | -20.76 ± 5.93 | 0.001 |
| Basal lateral | -23.26 ± 12.58 | -22.07 ± 9.52 | -18.35 ± 8.36 | -23.61 ± 11.15 | 0.213 |
| Apical septal | -15.17 ± 5.80 | -16.88 ± 5.46 | -16.72 ± 7.90 | -21.72 ± 8.25 | 0.003 |
| Middle septal | -15.49 ± 3.53 | -18.34 ± 5.95 | -19.90 ± 6.38 | -20.58 ± 5.51 | 0.001 |
| Basal septal | -19.90 ± 7.35 | -25.55 ± 12.40 | -24.58 ± 9.60 | -22.36 ± 8.65 | 0.048 |
| Strain rate | |||||
| Global | 2.05 ± 0.75 | 2.23 ± 0.87 | 2.24 ± 0.92 | 2.27 ± 0.63 | 0.459 |
| Apical lateral | 2.77 ± 1.65 | 2.53 ± 0.95 | 2.57 ± 0.74 | 2.85 ± 1.00 | 0.710 |
| Middle lateral | 3.21 ± 1.80 | 2.74 ± 1.36 | 2.95 ± 1.12 | 2.76 ± 0.86 | 0.570 |
| Basal lateral | 3.65 ± 2.24 | 3.23 ± 1.70 | 2.67 ± 1.03 | 3.00 ± 1.74 | 0.156 |
| Apical septal | 2.14 ± 0.68 | 2.40 ± 0.83 | 2.53 ± 0.54 | 2.83 ± 0.93 | 0.025 |
| Middle septal | 2.20 ± 0.69 | 2.57 ± 1.28 | 2.90 ± 1.40 | 2.78 ± 1.26 | 0.023 |
| Basal septal | 2.87 ± 1.10 | 3.66 ± 1.84 | 3.56 ± 1.63 | 3.25 ± 1.50 | 0.106 |
| TAPSE | 14.10 ± 4.49 | 14.01 ± 4.57 | 14.52 ± 4.37 | 14.93 ± 4.56 | 0.001 |
| LVEF | 74.20 ± 6.48 | 74.30 ± 4.57 | 74.33 ± 4.51 | 77.09 ± 2.72 | 0.001 |
| PVPG | 70.12 ± 13.81 | 38.83 ± 17.92 | 41.29 ± 14.93 | 45.17 ± 14.48 | 0.001 |
2D-STE, two-dimensional speckle tracking echocardiography; BPV, balloon pulmonary valvuloplasty; LVEF, left ventricular ejection fraction; PS, pulmonary stenosis; PVPG, pulmonary valve pressure gradient; RV, right ventricle; TAPSE, tricuspid annular plane systolic excursion.
Continuous data are presented as mean ± standard deviation and analyzed using linear mixed model analysis. P <0.05 was considered statistically significant.