Table 2.
Comparison of cardiac MRI parameters before and after transcatheter PVR in patients with repaired tetralogy of Fallot
| Before PVR (n = 18) | After PVR (n = 18) | P | Difference (%) | |
|---|---|---|---|---|
| Right ventricle cardiac MRI parameters | ||||
| EDVI, mL/m2 | 166.50 (143.50–184.00) | 115.00 (104.50–125.25) | 0.000* | 30.72 |
| ESVI, mL/m2 | 93.00 (81.50–113.75) | 65.50 (58.25–69.25) | 0.000* | 29.56 |
| SVI, mL/m2 | 67.50 (57.75–71.25) | 51.00 (46.75–56.25) | 0.001* | 24.44 |
| EF, % | 41.50 (38.75–44.25) | 43.50 (40.00–45.25) | 0.076 | 4.81 |
| Left ventricle cardiac MRI parameters | ||||
| EDVI, mL/m2 | 88.00 (81.25–97.25) | 82.00 (73.00–92.25) | 0.117 | 6.81 |
| ESVI, mL/m2 | 46.00 (40.00–50.25) | 41.00 (35.75–47.25) | 0.017* | 10.86 |
| SVI, mL/m2 | 42.00 (39.25–51.25) | 39.50 (36.75–47.50) | 0.341 | 5.05 |
| EF, % | 49.50 (46.5–52.25) | 51.00 (48.00–54.25) | 0.074 | 2.94 |
| PR fraction, % | 45.50 (38.00–52.00) | 2.50 (1.00–21.00) | 0.000* | 94.50 |
| Other parameters | ||||
| Right atrial EDVI | 58.00 (55.00–60.75) | 53.50 (48.00–55.00) | 0.000* | 7.75 |
| Right atrial ESVI | 37.00 (33.25–42.00) | 34.50(28.00–39.00) | 0.002* | 6.75 |
| Left atrial EDVI | 39.00 (34.00–44.00) | 37.00 (31.25–40.50) | 0.099* | 5.12 |
| Left atrial ESVI | 21.50 (20.00–22.00) | 21.00 (20.25–22.00) | 0.652 | 2.32 |
| TR, n mild/moderate/severe | 7/7/4 | 12/5/1 | 0.005* | NA |
| QRS, msec | 155.5 (158.5–143.75) | 154.5 (160.5–142.75) | 0.074 | 6 |
Data are presented as median [25th–75th interquartile range]. P, for the Wilcoxen-Rank test. P-value is significant if < 0.05
EDVI end-diastolic volume index, ESVI end-systolic volume index, EF ejection fraction, MRI magnetic resonance imaging, PVR pulmonary valve replacement, PR pulmonary regurgitation, SVI stroke volume index, TR tricuspid regurgitation