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Effect of oral zinc supplementation on the growth of preterm infants
M N Islam1, M A K A Chowdhury, M Siddika
1Department of Pediatrics, Mymensingh Medical College Hospital, Mymensingh, Bangladesh. mnislamdr1@yahoo.com
Insights
Oral zinc supplementation significantly improved growth in preterm infants. This study found enhanced weight gain and length in the early months of life for low birth weight babies receiving zinc.
Area of Science:
- Pediatric Nutrition
- Neonatal Physiology
- Micronutrient Metabolism
Background:
- Preterm infants are at risk for zinc deficiency due to limited stores and increased needs.
- Suboptimal growth and increased morbidity are common challenges in preterm infant care.
- Early nutritional interventions are crucial for improving outcomes in premature neonates.
Purpose of the Study:
- To evaluate the impact of oral zinc supplementation on the growth parameters of preterm infants.
- To compare weight gain and linear growth in preterm infants receiving zinc versus those not receiving zinc.
- To assess the effect of zinc supplementation on serum zinc and hemoglobin levels in preterm infants.
Main Methods:
- A randomized controlled trial was conducted with 100 appropriate-for-date preterm infants (1000-2500 g).
- Infants were randomized to receive either zinc and multivitamin supplements or multivitamin supplements alone for 6 weeks.
- Primary outcome variables included weight and length increments.
Main Results:
- Serum zinc and hemoglobin levels were significantly higher in the zinc-supplemented group post-intervention (P<0.05).
- Significant differences in weight gain and length increment were observed between groups during follow-ups.
- Reduced morbidity was noted in the zinc-supplemented group without serious adverse effects.
Conclusions:
- Oral zinc supplementation is effective in enhancing early growth in preterm low birth weight infants.
- Zinc supplementation positively influences key growth indicators and potentially reduces morbidity in preterm neonates.
- This intervention shows promise for improving the nutritional status and growth trajectory of preterm infants.
Objective:
To compare the effect of oral zinc supplementation on growth of preterm infants.
Design:
Randomized controlled trial.
Setting:
Dhaka Shisu Hospital (Tertiary care hospital).
Subjects:
100 appropriate for date preterm infants weighing between 1000 to 2500 g were randomized to receive zinc and multivitamin supplement (Group I; n=50) or only multivitamin supplement (Group II).
Intervention:
Zinc supplementation was given 2mg/kg/day for 6 weeks along with multivitamin in Group I and only multivitamin to Group II.
Primary Outcome Variable:
Increment of weight and length.
Results:
At enrollment, serum zinc (62.1 ± 12.4 ug/dL in Group I and 63.1 ± 14.6 ug/dL in Group II) and hemoglobin levels (14.9 ± 2.4 g/dL in Group I and 14.4 ± 1.7 g/dL in Group II) were almost similar in both groups. Serum zinc levels were in lower limit of normal range. After supplementation, serum zinc and hemoglobin levels were significantly higher in Group I (105 ± 16.5 ug/dL) than Group II (82.2 ± 17.4 ug/dL) (P<0.05). Weight, length and head circumference were comparable in both groups at enrollment. Significant differences in weight gain and increment in length were found in first and second follow up between two groups but OFC increments were not significant (P>0.05). Reduction of morbidity was apparent in zinc supplemented group. No serious adverse effect was noted related to supplementation therapy.
Conclusion:
Zinc supplementation for preterm low birth weight babies is found effective to enhance the growth in early months of life.
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