TABLE 1

Important Clinical Characteristics

Clinical DataPDA (n = 20)Control (n = 20)P
Gestational age, mean ± SD, wk28.6 ± 1.528.5 ± 1.5NS
Birth weight, mean ± SD, g1154 ± 2681055 ± 216NS
Gender, male/female11/911/9NS
Apgar score, median (range)
    1 min6 (1–9)6 (1–10)NS
    5 min8 (6–10)8 (6–10)NS
Maximal blood pressure support score, n (%)
    05 (25)11 (55)<.05
    11 (5)6 (30)<.05
    26 (35)0<.05
    35 (25)1 (7)<.05
    400
    53 (15)2 (10)NS
Respiratory support, n (%)
    CPAP1 (5)2 (10)NS
    SIMV16 (80)13 (65)NS
    HFOV3 (15)5 (25)NS
PIVH, n (%)
    Grade 11 (5)2 (10)NS
    Grade 23 (15)1 (5)NS
    Grade 300
    Grade 400
  • CPAP indicates continuous positive airway pressure; SIMV, synchronized intermittent mandatory ventilation; HFOV, high-frequency oscillatory ventilation; PIVH, periventricular/intraventricular hemorrhage; NS, not significant; —, no data.