TABLE 1.
Characteristics of patients who returned and those who were alive at 1 year and did not return
| Variable | Returned for 1-y evaluation (n = 114) | Alive, but did not return (n = 50) | P value |
|---|---|---|---|
| Sex | |||
| Male | 64 (56%) | 32 (64%) | .35 |
| Female | 50 (44%) | 18 (36%) | |
| Gestational age (wk) | 39 (29–41) | 39 (28–41) | .80 |
| Birth weight (g) | 3182 (956–4460) | 2984 (1335–3955) | .09 |
| Apgar score at 5 min | 9 (6–9) | 9 (4–9) | .28 |
| Diagnostic class | |||
| I | 54 (47%) | 26 (52) | |
| II | 16 (14%) | 5 (10%) | .88 |
| III | 8 (7%) | 4 (8%) | |
| IV | 36 (32%) | 15 (30%) | |
| Age at first operation (d) | 8.5 (1–180) | 9 (1–188) | |
| Aged ≤30 d at first operation | 67 (59%) | 32 (64%) | .26 |
| Number of operations with CPB during first year | 1 (1–4) | 1 (1–3) | .169 |
| Number of episodes of DHCA during first year | 76/114 (67%) | 30/50 (60%) | |
| 1 | 49 (64%) | .10 | |
| 2 | 23 (30%) | 14 (47%) | |
| 3 | 4 (6%) | 16 (53%) | |
| Total support during first year (CPB + DHCA) (min) | 78.5 (18–183) | 80 (28–191) | .491 |
| Total DHCA during first year (min) | 45.5 (1–97) | 61.5 (23–134) | .88 |
| EEG seizures | 15/114 (13%) | 1/50 (2%) | .02 |
CPB, Cardiopulmonary bypass; DHCA, deep hypothermia and circulatory arrest; EEG, electroencephalogram.