Table 1.
Characteristics of the patient and control groups
| Patient Group | Control Group | |
|---|---|---|
| No. of patients | 20 | 7 |
| No. of men/no. of women | 8/12 | 4/3 |
| Age at study inclusion, yr | 19.5 ± 8.9 | 24.6 ± 8.7 |
| Body surface area, m2 | 1.57 ± 0.29 | 1.86 ± 0.28 |
| Mean heart rate, beats/min | 74.4 ± 12.1* | 63.4 ± 9.0 |
| QRS duration, ms | 141.1 ± 24.6* | 92.3 ± 9.5 |
| Pulmonary regurgitation fraction, % | 31.8 ± 13.4* | 2.06 ± 1.65 |
| RVSP, mmHg | 40.1 ± 14.8 | N/A |
| Maximal O2 consumption, ml·min−1·kg−1 | 26.8 ± 7.2* | 34.6 ± 6.7 |
| No. of previous palliations | 10 | |
| Time from repair, yr | 14.6 ± 5.3 | |
| No. of repeated surgeries | 4 | |
| No. of homografts/heterografts | 9 |
Values are means ± SD. RVSP, right ventricular (RV) systolic pressure; N/A, not applicable. Primary surgical correction had been performed with transannular patch (n = 9), without transannular patch (n = 2), and with valved conduit insertion (n = 9).
*
Significant difference compared with data in control subjects (P < 0.05).