Sepsis and congenital asplenia

Area of Science:

• Pediatrics
• Infectious Diseases
• Cardiology

Background:

• Congenital asplenia, the absence of a spleen from birth, increases susceptibility to severe infections.
• Asplenia is often associated with complex congenital heart disease, forming the asplenia syndrome.
• Children with asplenia are at increased risk for overwhelming postsplenectomy infection (OPSI)-like illness.

Purpose of the Study:

• To evaluate the incidence of severe infections, specifically sepsis, in children with congenital asplenia.
• To compare infection rates between children with asplenia syndrome and a control group of children with similar cardiac conditions but a functioning spleen.
• To identify the common pathogens and age-specific risks for sepsis in this population.

Main Methods:

• Retrospective review of 59 children with congenital asplenia (isolated or with congenital heart disease).
• Comparison with a control group of eusplenic children with comparable cardiac lesions.
• Statistical analysis to determine the incidence and risk factors for sepsis.

Main Results:

• 27% of children with congenital asplenia experienced severe infections (sepsis).
• Gram-negative bacteria (E. coli, Klebsiella) were common in infants <6 months; Pneumococcus and H. influenzae predominated in older children.
• Children with asplenia syndrome had a significantly higher incidence of sepsis compared to controls.
• Sepsis posed a greater mortality risk than cardiac disease for survivors of the first month in the asplenia syndrome group.

Conclusions:

• Congenital asplenia significantly elevates the risk of sepsis in children, especially those with associated heart disease.
• Prophylactic antibiotic administration, starting at three months of age and continuing indefinitely, is strongly recommended.
• This preventative strategy aims to mitigate the life-threatening risk of sepsis in children lacking splenic function.