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Updated: Oct 24, 2026

Intravenous Injections in Neonatal Mice
Published on: November 11, 2014
The use of prophylactic intravenous immunoglobulin therapy in very low birthweight infants
Insights
Prophylactic intravenous immunoglobulin (IVIG) therapy in very low birthweight (VLBW) infants increased immunoglobulin G (IgG) levels but did not reduce hospital-acquired infections. Further research is needed to confirm its efficacy in preventing infections in VLBW infants.
Area of Science:
- Neonatalogy
- Immunology
- Infectious Diseases
Background:
- Nosocomial infections are a significant cause of mortality in premature infants, particularly those with very low birthweight (VLBW).
- VLBW infants exhibit low serum immunoglobulin G (IgG) levels, increasing susceptibility to early infancy infections.
- Prophylactic intravenous immunoglobulin (IVIG) administration is explored to elevate IgG levels and mitigate hospital-acquired infections.
Purpose of the Study:
- To evaluate the efficacy of prophylactic IVIG therapy in VLBW infants.
- To determine if IVIG administration can maintain higher IgG levels and reduce hospital-acquired infection rates.
- To assess the impact of IVIG on the timing of the first documented sepsis episode.
Main Methods:
- A randomized controlled study involving 61 VLBW infants, divided into IVIG (n=31) and control (n=30) groups.
- IVIG group received 500-1000 mg/kg doses every 2 weeks; control group received saline infusion.
- Infusions continued until infants reached 1800g or were discharged.
Main Results:
- No significant differences in perinatal and neonatal characteristics between groups.
- IVIG group consistently demonstrated higher serum IgG levels.
- The age of the first documented sepsis was earlier in the control group compared to the IVIG group.
Conclusions:
- Prophylactic IVIG therapy effectively increases IgG levels in VLBW infants, with sustained elevation for up to 2 months.
- The study did not observe a significant prophylactic effect of IVIG in reducing hospital-acquired infections.
- While IVIG impacts IgG levels, its role in preventing infections in VLBW infants requires further investigation.
Background:
Nosocomial infections are a major cause of death in premature infants, especially in very low birthweight (VLBW) infants. The VLBW infants have low serum immunoglobulin G levels, which may have an effect on infections in early infancy. Thus, prophylactic administration of intravenous immunoglobulin (IVIG) is proposed to maintain higher immunoglobulin G and reduce the rate of hospital-acquired infection.
Materials And Methods:
A study for the effects of prophylactic IVIG therapy in VLBW infants was performed. A total of 61 VLBW infants were enrolled, and divided into the IVIG group (n = 31) and the control group (n = 30). The dose for each infant was 750-1000 mg/kg for those whose birthweight was less than 1000 g, and 500-750 mg/kg for infants whose birthweight was between 1001 and 1500 g. The control group received saline infusion. The infusions were given every 2 weeks until the infant weighed 1800 g, or was discharged.
Results:
The results showed: there were no major differences in the perinatal and neonatal characteristics between the two groups, consistently higher IgG levels were found in the IVIG group, and the age of first documented sepsis was earlier in the control group.
Conclusion:
In this study, the prophylactic IVIG therapy may give substantially higher IgG levels, which may last for 2 months. However, a prophylactic effect for hospital-acquired infections was not observed.
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