Effect of Intranasal Breast Milk Administration in Preterm Infants

Inclusion Criteria: * Birth weight \>1000 gr, * APGAR score \>7 at 5 minutes after birth, * Availability of breast milk, * No medical diagnosis affecting cerebral oxygenation (intraventricular hemorrhage, cardiovascular and neurological disorders, anemia), * No congenital anomalies or chromosomal abnormalities, * No congenital anomaly (such as cleft palate) affecting nasal patency. Exclusion Criteria: * Being able to feed orally in all feedings * Being fed entirely on formula milk, * Administration of medication via the nasal route, * Being intubated or receiving continuous positive air pressure (CPAP) support, * Maternal substance abuse, alcohol abuse, HIV infection, untreated active tuberculosis, chemotherapy or radiotherapy treatment, * The mother has mastitis, breast trauma, abscesses or is taking any medication that passes into the milk, * The mother does not want to express milk.