Table 2.
Comparison of patient characteristics between the studied cohort and the entire cohort of ASO patients under active care
| STUDY COHORT | TORONTO COHORT | p-value | |
|---|---|---|---|
| n = 27 | n = 65 | ||
| Age at enrolment (years) | 21 ± 3* | 24 ± 8 | NS |
| Male, n (%) | 23 (85) | 40 (62) | 0.03 |
| Age at surgery (days) | 6 ± 5* | 6 ± 5 | NS |
| Era of ASO surgery | 1979 - 1991 | 1979 - 1991 | |
| Cardiac anatomy | |||
| TGA with IVS | 14 | 36 | NS |
| TGA with VSD | 12 | 27 | |
| Taussig-Bing | 1 | 2 | |
| Coronary pattern | |||
| 1LCx2R (usual) | 18 | 42 | NS |
| 2RLCx (single ostium) | 4 | 5 | |
| 1L2RCx (CX from RCA) | 4 | 13 | |
| 1Cx2RL (LAD from RCA) | 1 | 3 | |
| Bypass time, min | 141 ± 99* | 150 ± 54 | NS |
| Cross clamp time, min | 99 ± 22* | 93 ± 21 | NS |
ASO = arterial switch operation, Cx = circumflex artery; IVS = intact ventricular septum; LAD = left coronary artery; RCA = right coronary artery; TGA = transposition of the great arteries; VSD = ventricular septum defect.
*Patients with early repair only.