Table 1.
Patient Characteristics
| Preimplementation (n=32) | Postimplementation (n=24) | P Value | |
|---|---|---|---|
| Enrolled in OxyCAHN study, n (%) | 10 (31) | 11 (46) | 0.28 |
| Age at operation, days | 3.5 [2.3, 5] | 4.5 [3, 6] | 0.07 |
| Male sex, n (%) | 22 (69) | 17 (71) | 1.0 |
| Birth weight, g | 3007±445 | 3221±441 | 0.08 |
| Gestational age | |||
| <38 weeks | 6 (19) | 4 (17) | 1.0 |
| Mean, weeks | 38.7±1.2 | 38.4±1.7 | 0.53 |
| Apgar scores | |||
| At 1 minute | 8 [7, 8] | 8 [7, 8] | 0.75 |
| At 5 minutes | 9 [8, 9] | 8 [8, 9] | 0.55 |
| Anatomical diagnosis, n (%) | 0.44 | ||
| Aortic atresia, mitral atresia | 13 (41) | 6 (25) | |
| Aortic atresia, mitral stenosis | 7 (22) | 5 (21) | |
| Aortic stenosis, mitral stenosis | 12 (38) | 12 (50) | |
| Aortic stenosis, mitral atresia | 0 | 1 (4)a | |
| Echocardiographic findings | |||
| Lateral mitral valve, cm | 0.64±0.16 | 0.64±0.19 | 0.96 |
| Ascending aorta, cm | 0.37±0.22 | 0.41±0.22 | 0.47 |
| Indexed LVEDV, mL/m2 | 15.2 [5.9, 23.4] | 16.9 [11.8, 33.2] | 0.40 |
| Moderate‐to‐severe TR, n (%) | 1 (3) | 2 (8) | 0.57 |
| Moderate‐to‐severe RV dysfunction, n (%) | 3 (9) | 2 (8) | 1.0 |
Plus‐minus values represent means±SD. Bracketed values follow median and represent interquartile range. Parentheses represent percentage of cohort. LVEDV indicates left ventricular end‐diastolic volume; TR, tricuspid valve regurgitation; RV, right ventricular.
a
This patient had mitral atresia, aortic stenosis, and a ventricular septal defect.