['This study aims to investigate the association between fluid intake in the first 4 days of life and the subsequent severity of bronchopulmonary dysplasia (BPD) in very low-birth-weight infants (VLBWI).', 'A retrospective chart review of 75 infants with a gestational age of less than 32 weeks and a birth weight of\u2009<\u20091,500\u2009g was performed. Demographic, clinical data, associated maternal risk factors, and amount of fluid received in the first 4 days of life were analyzed.', 'Severe BPD was associated with a lower gestational age (27.04\u2009±\u20092.073 wks vs. 28.70\u2009±\u20091.706 wks, p=0.001), lower birth weight (981.44\u2009±\u2009244.54 vs. 1,199.63\u2009±\u2009165.39\u2009g, p\u2009<\u20090.001), use of surfactant (91.7 vs. 63%, p=0.002), patent ductus arteriousus (PDA) (70.8 vs. 37%, p=0.004), pulmonary hemorrhage (14.6 vs. 0%, p=0.045), and more fluids received from the 2nd to 4th days of life (346.44\u2009±\u200942.38 mL/kg vs. 323.91\u2009±\u200927.62 mL/kg, p=0.007). A cut off point of 345 mL/kg of fluids from the 2nd to 4th days of life was selected using receiver operating characteristic curve analysis, and remained a significant risk factor even after multiple logistic regression analysis.'] Is severe bronchopulmonary dysplasia associated with higher fluid intake in very low-birth-weight infants : a retrospective study?