Postnatal Changes in Humerus Cortical Bone Thickness Reflect the Development of Metabolic Bone Disease in Preterm Infants

Table 1

Demographic and clinical characteristics of the study subjects ().

Characteristic	Value
Male sex, (%)	15 (55.6)
Gestational age (weeks)	27 (22–31)
Birth weight (g)	1041 (412–1474)
SGA (<tenth percentile), (%)	5 (18.5)
Days of enteral feeding > 100 mL/kg/day (day)	17 (7–55)
Calcium administration (mg/kg/day)	45.9 (20.7–66.0)
Phosphorus administration (mg/kg/day)	33.1 (14.5–61.3)
Vitamin D administration (IU/kg/day)	137.5 (13.3–212.0)
Prenatal steroid use, (%)	25 (92.6)
Total dosage of hydrocortisone (mg/kg)	21.4 (0.0–56.8)
Diuretic drug use, (%)	13 (48.1)
Duration of mechanical ventilation (days)	39 (1–90)
Duration of sedation (days)	10 (0–72)
RDS, (%)	24 (88.9)
PDA, (%)	9 (33.3)
IVH grade III or IV, (%)	3 (11.1)
cPVL, (%)	2 (7.4)
NEC, (%)	1 (3.7)
Sepsis (hemoculture positive), (%)	1 (3.7)
BPD (oxygen at 28 days of life), (%)	20 (74)
ROP stage ≥ 2, (%)	13 (48.1)
Fracture, (%)	2 (7.4)

BPD, bronchopulmonary dysplasia; cPVL, cystic periventricular leukomalacia; IVH, intraventricular hemorrhage; NEC, necrotizing enterocolitis; PDA, patent ductus arteriosus; PMA, postmenstrual age; RDS, respiratory distress syndrome; ROP, retinopathy of prematurity; SGA, small for gestational age.
Values are expressed as median (range) or number (%).