[Early management of preterm infants in neonatal intensive care units (excluding respiratory diseases and ulcerative necrotizing enterocolitis)].

Preterm neonates present multiple challenges due to organ immaturity.Cardiovascular:Patent ductus arteriosus (PDA) is common in lower gestational ages and may cause respiratory and circulatory complications. Treatment includes medical (ibuprofen, para-cetamol), surgical, or percutaneous approaches. Bradycardia is frequent and requires continuous monitoring.Digestive/Metabolic:Early enteral nutrition with fortified breast milk is preferred; parenteral nutrition is often required. Gastroesophageal reflux is usually benign. Preventing metabolic bone disease necessitates adequate calcium and phosphate intake. Jaundice is common; cholestasis often relates to parenteral nutrition.Infectious:Immune immaturity and invasive devices increase risks of early-onset (E.coli), nosocomial (CoNS), and fungal (Candida) infections. Diagnosis relies on blood cultures; treatment is empirical then targeted.Neurological:Common lesions include periventricular leukomalacia and intraventricular hemorrhage, with potential sequelae. Monitoring includes cranial ultrasound, EEG, MRI, and routine screening for hearing loss and retinopathy of prematurity.