Table 1.
Characteristics of Follow-Up Cohort
| n | % | |
|---|---|---|
| EGA, wk, median (IQR) | 39 (37, 39) | |
| <34 wk EGA | 4 | 3.0 |
| 34 0/7–36 6/7 wk EGA | 18 | 13.6 |
| 37 0/7–39 6/7 wk EGA | 90 | 68.2 |
| ≥40 0/7 | 20 | 15.2 |
| Birth weight, g, median (IQR) | 3110 (2730, 3510) | |
| Discharge age, mo, median (IQR) | 1 (1, 2) | |
| Sex (% female) | 57 | 43.1 |
| Race | ||
| White | 115 | 87.1 |
| Black | 13 | 9.8 |
| Hispanic | 12 | 9.0 |
| Other | 4 | 3.0 |
| Genetic syndrome | 31 | 23.4 |
| Trisomy 21 | 14 | 10.6 |
| Failed ABR | 8 | 7.0 |
| Seizures on EEG | 2 | 1.5 |
| Discharge on full oral feeds | 62 | 46.9 |
| Neuroimaging | ||
| Not performed | 23 | 17.4 |
| Read as normal | 56 | 42.4 |
| Read as severe neural injury* | 17 | 12.9 |
| Other types of neuroimaging findings† | 36 | 27.3 |
| Cardiac diagnosis | ||
| Hypoplastic left heart | 25 | 18.9 |
| Tetralogy of Fallot | 14 | 10.6 |
| Truncus arteriosus | 3 | 2.3 |
| Tricuspid atresia | 6 | 4.5 |
| Transposition of the great vessels | 11 | 8.3 |
| Total anomalous pulmonary venous return | 5 | 3.8 |
| Pulmonary artery, critical pulmonary stenosis | 5 | 3.8 |
| Aortic stenosis, atresia, coarctation | 34 | 25.8 |
| Atrioventicular septal defect | 16 | 12.1 |
| Other | 13 | 9.8 |
ABR indicates auditory brainstem response; EEG, electroencephalogram; EGA, estimated gestational age at birth; IQR, interquartile range (25th, 75th).
*
Severe neural injury defined as intraventricular hemorrhage grades III or intraventricular hemorrhage, periventricular leukomalacia, diffuse ischemia; all severe findings documented on magnetic resonance imaging or computed tomography.
†
Intraventricular hemorrhage grades I or II, partial agenesis of the corpus callosum, mineralizing vasculopathy of noninfectious origin, small subdural hematomas.