Intravenous Immunoglobulin for Overwhelming Postsplenectomy Infection

Area of Science:

• Infectious Diseases
• Immunology
• Critical Care Medicine

Background:

• Overwhelming postsplenectomy infection (OPSI) is a rare but life-threatening complication in patients without a spleen.
• Asplenic individuals are highly susceptible to fulminant bacteremia, particularly from encapsulated bacteria.
• Prompt and effective treatment is crucial for improving outcomes in OPSI cases.

Observation:

• A 70-year-old asplenic male with acute ischemic stroke developed rapid, fulminant septic shock due to pneumococcus pneumonia and bacteremia.
• The patient was treated with resuscitation, antibiotics, and intravenous immunoglobulin (IVIG) therapy.
• The patient survived the OPSI episode with favorable outcomes.

Findings:

• A literature review of OPSI cases from 1971 to 2017 was conducted.
• Cases treated with IVIG demonstrated a significantly higher survival rate compared to those without IVIG.
• Multivariable regression analysis identified IVIG as an independent predictive factor for survival in OPSI.

Implications:

• Intravenous immunoglobulin (IVIG) therapy appears to be an effective adjunctive treatment for overwhelming postsplenectomy infection (OPSI).
• The findings support the consideration of IVIG as part of the management strategy for asplenic patients presenting with OPSI.
• Further research may elucidate the precise mechanisms and optimal use of IVIG in preventing or treating OPSI.