Table 2.
Baseline variables used to predict deterioration
| Variables | Mean ± SD or n (%) | |
|---|---|---|
| Demographics | Sex (male) | 76 (50%) |
| Age at surgical repair (years) | 3.5 ± 6.7 | |
| Age at first CMR (years) | 23.4 ± 14 | |
| Surgical repair procedurea | Transannular patch | 97 (63%) |
| RV-PA conduit | 11 (7%) | |
| RVOT patch | 30 (20%) | |
| Infundibular resection | 2 (1%) | |
| Pulmonary valvotomy | 11 (7%) | |
| Commissurotomy | 9 (6%) | |
| Electrocardiogram | QRS duration (ms) | 136 ± 27 |
| Heart rate (HR, beats/min) | 80 ± 17 | |
| CMR variables | LV dyssynchrony (LV-dyss, ms) | 19 ± 11 |
| RV dyssynchrony (RV-dyss, ms) | 57 ± 29 | |
| Interventricular dyssynchrony (Inter-dyss, ms)b | −40 ± 20 | |
| LV circumferential strain (LV-Ecc, %) | 27 ± 3 | |
| RV circumferential strain (RV-Ecc, %) | 18 ± 3 | |
| LV longitudinal strain (LV-Ell, %) | 19 ± 3 | |
| RV longitudinal strain (RV-Ell, %) | 23 ± 3 | |
| RV end-diastolic volume index (RVEDVi, mL/m2) | 143 ± 36 | |
| RV end-systolic volume index (RVESVi, mL/m2) | 67 ± 23 | |
| LV ejection fraction (LVEF, %) | 59 ± 6 | |
| RV ejection fraction (RVEF, %) | 53 ± 8 | |
| Pulmonary regurgitation fraction (PR fraction, %) | 36 ± 15 | |
| RV mass index (RVMASSi, g/m2) | 33.8 ± 12.5 |
CMR, cardiac magnetic resonance; LV, left ventricular; RV, right ventricular; RVOT, right ventricular outflow tract; RV-PA, right ventricle-to-pulmonary artery; SD, standard deviation.
a
Some patients had more than one type of surgical repair.
b
Negative values indicate delayed contraction of the RV relative to the LV.