Sara Esmaelzadeh Saeieh - Social Determinants of Health Research Center, Alborz University of Medical Sciences, Karaj, Iran
Badri Farhand - Neonatal Intensive Care Nursing, Clinical Research and Development of Kamali Hospital Center, Alborz University of Medical Sciences, Karaj, Iran
Elahe Dehghan Nayeri - Clinical Research and Development of Kamali Hospital Center, Alborz University of Medical Sciences, Karaj, Iran
Ashkan Torabi Kashani - Medical student, School of medicine, Alborz University of Medical Sciences, Karaj, Iran
Alireza Jashni Motlagh - School of Medicine, Alborz University of Medical Sciences, Karaj, Iran

Background: Studies have indicated contradictory results concerning the impact of protein-based diets on very low birth weight neonates. Hence, this study explored the impacts of various calorie and protein diets on the growth of very low birth weight neonate during ۱۵ days. Methods: This study was carried out on ۴۴ neonates with very low birth weight, selected regarding the inclusion criteria. They were assigned into two clusters based on their birth weight. Each cluster included a control group receiving the standard diet formula, and an experimental group with neonates weighing ۱۰۰۰-۱۵۰۰gr who followed a high-energy diet with ۴gr protein and those weighing less than ۱۰۰۰gr who received a high-energy diet with ۴.۲gr protein. Finally, the neonates' weight, height, and head circumference were measured every ۳ days for ۱۵ days. Results: According to the findings, the mean weight of  the neonates who weighed between ۱۰۰۰ and ۱۵۰۰gr was higher in the intervention group from the third day after initiating the diet, though no significant difference was observed. Similarly, the mean weight of intervention group in the second cluster was higher than the neonates in the control group from the third day with a statistically significant difference on the ۱۵th day. Moreover, no significant difference was found in other measurements between groups. Conclusion: The results demonstrated the effect of a higher weight of protein intake group on the ۱۵th day. Hence, it recommends providing higher protein intake formula to lower infant birth weight for better growth.

high calories, high protein, neonate, Very low birth weight