[Children with asplenia or hyposplenia: Preventing overwhelming post splenectomy infection]

Area of Science:

• Immunology
• Infectious Diseases
• Surgical Pathology

Context:

• The spleen plays a crucial role in filtering blood, removing foreign bodies, and producing opsonins, which are vital for preventing infections.
• Overwhelming post-splenectomy infection (OPSI) is a severe complication in individuals who have undergone splenectomy or have congenital asplenia.
• Streptococcus pneumoniae is the leading cause of OPSI and carries a high mortality rate in asplenic patients.

Purpose:

• To provide an exhaustive review of current evidence regarding OPSI.
• To outline current recommendations for the prevention of invasive infections in asplenic patients.
• To highlight the importance of prophylactic measures in managing asplenic individuals.

Summary:

• The spleen's functions in immune defense, including bacterial filtration, phagocytosis, and opsonin production, are essential for preventing OPSI.
• Asplenia, whether postsurgical or congenital, significantly increases susceptibility to life-threatening infections, particularly those caused by encapsulated bacteria like Streptococcus pneumoniae.
• This review synthesizes existing literature and guidelines to inform clinical practice on OPSI prevention strategies.

Impact:

• Improved understanding of OPSI pathogenesis and risk factors in asplenic populations.
• Enhanced clinical guidelines for the prevention and management of invasive infections in asplenic patients.
• Potential reduction in morbidity and mortality associated with OPSI through effective prophylactic strategies.