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Sepsis and congenital asplenia
Insights
Children with congenital asplenia face a high risk of severe infections, particularly sepsis. Early prophylactic antibiotics are recommended to reduce sepsis-related mortality in these vulnerable children.
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.
Abstract:
Fifty-nine children with congenital asplenia were reviewed for episodes of severe infection. Seven children had isolated asplenia and 52 had asplenia associated with complex congenital heart disease (asplenia syndrome). A control group of eusplenic children with comparable cardiac lesions were assembled and used for comparative statistical analysis. There were 16 instances of documented sepsis among 59 children (27%). In those less than six months of age, the invading organism was usually gram-negative (Escherichia coli or Klebsiella). In children six months of age or older, the infecting organism was usually a pneumococcus or H. influenzae. When those with asplenia syndrome were compared to the control population, the former group had a significantly greater incidence of sepsis. Children with asplenia syndrome who survived the first month of life were at greater risk of dying from sepsis than from their heart disease. It is recommended that prophylactic antibiotics be administered to children with congenital absence of the spleen, commencing at three months of age, to be continued indefinitely.