Table 1.
Clinical descriptions of neonates (n = 79).
| Characteristic | Mean (SD) or n (%) |
|---|---|
| Male sex | 47 (59%) |
| Gestational age, weeks | 39.1 (1.5) |
| Emergency deliverya | 56 (71%) |
| Cesarean section | 60 (76%) |
| 10-min Apgar score | 4.8 (2.2) |
| Vasopressor use | 52 (66%) |
| Seizuresb | 31 (39%) |
| Required mechanical ventilation | 41 (52%) |
| Sarnat encephalopathy scorec | |
| 1 | 5 (6%) |
| 2 | 59 (75%) |
| 3 | 15 (19%) |
| PaCO2, mmHg | |
| All 35–45 | 6 (8%) |
| Some <35, all <45 | 16 (20%) |
| None <35, some >45 | 31 (39%) |
| Some <35, some >45 | 26 (33%) |
| pH of first arterial blood gasd | 7.10 (0.16) |
| Base deficit of first arterial blood gase | −16.1 (7.4) |
| Perinatal insult score | 6 (1.4) |
a
Defined as an unscheduled cesarean delivery for fetal distress.
b
Diagnosed by electroencephalography.
c
For neonates born at an outside hospital, the Sarnat score obtained after arrival to the Johns Hopkins neonatal intensive care unit is reported.
d
Seventy seven neonates had pH values from their first arterial blood gas.
e
Fifty four neonates had base deficit values from their first arterial blood gas.
PaCO2, partial pressure of arterial carbon dioxide.