Inspiratory-expiratory variation of pleural line thickness in neonates with and without acute respiratory failure

Respiratory Research

Table 1 Basic population details

	Whole population (124)	RDS (69)	TTN (14)	NARDS (15)	NLD (26)
Gestational age (weeks)	31.9 (3.9)	29.9 (3.2)	35.2 (3)	33 [2.8]	35 (3.6)
Birth weight (g)	1700 (836)	1301 (580)	2621 (779)	1796 (686)	2209 (871)
Males	67 (54%)	36 (52.2%)	10 (71.4%)	8 (53.3%)	13 (50%)
Cesarean section	70 (56.5%)	45 (65.2%)	6 (42.9%)	6 (40%)	13 (50%)
Prenatal steroids	77 (62.1%)	50 (72.5%)	5 (35.7%)	9 (60%)	13 (50%)
Clinical chorioamnionitis	24 (19.3%)	19 (27.5%)	1 (7.1%)	2 (13.3%)	2 (7.7%)
5’ Apgar score	9 [8–10]	9 [8–10]	8 [7–9]	8 [7–10]	9 [8–10]
CRIB-II score	6 [2–9]	8 [4–9]	1 [0–1]	2 [2–5]	3 [0–4]
SNAPPE-II score	0 [0–12]	0 [0–7]	0 [0–4]	16 [6–28]	0 [0–18]
Respiratory support
None	24 (19.3%)	0	0	0	24 (92.3%)
Non-invasive	90 (72.6%)	65 (94.2%)	14 (100%)	11 (73.3%)	0
Invasive	10 (8.1%)	4 (5.8%)	0	4 (26.7%)	2 (7.7%)

Data are expressed as mean (standard deviation), median [25th – 75th percentile] or number (%). Prenatal steroids were considered when two 12 mg betamethasone doses were administered at least 24 h before the delivery. CRIB-II and SNAPPE-II scores were calculated for neonates ≤ or > 32 weeks’ gestation, respectively. Respiratory support was considered as non-invasive (i.e.: continuous positive airway pressure or non-invasive ventilation) or invasive (i.e.: conventional or high-frequency oscillatory ventilation). Abbreviations: CRIB: critical risk index for babies; NARDS: neonatal acute respiratory distress syndrome; NLD: no lung disease; Paw: mean airway pressure; RDS: respiratory distress syndrome; SNAPPE: score for neonatal acute physiology-perinatal extension; TTN: transient tachypnoea of the neonate

ISSN: 1465-993X