Blood-transfusion in group-B streptococcal sepsis

Area of Science:

• Neonatal Medicine
• Immunology
• Infectious Diseases

Background:

• Neonatal sepsis caused by group-B Streptococcus presents a high mortality risk.
• Opsonins play a crucial role in combating bacterial infections in neonates.

Purpose of the Study:

• To evaluate the efficacy of fresh whole blood transfusions in providing opsonins.
• To assess the impact of these transfusions on reducing mortality in group-B streptococcal sepsis.

Main Methods:

• Examined pre- and post-transfusion sera from 22 neonates for opsonic activity against group-B Streptococcus.
• Assessed the volume of transfused blood and the presence of heat-stable antibodies.

Main Results:

• Opsonic activity increased significantly only with high-volume transfusions (over 40% blood volume) containing heat-stable antibodies.
• Infants receiving transfusions with antibodies against their infecting strain had a 100% survival rate (9/9).
• Infants receiving transfusions lacking specific antibodies had a 50% mortality rate (3/6).

Conclusions:

• Fresh whole blood transfusion is a viable method for supplying opsonins to neonates with group-B streptococcal sepsis.
• The presence of specific antibodies in transfused blood is critical for improving survival outcomes.
• High-volume transfusion of antibody-containing blood is associated with successful treatment of neonatal sepsis.