Coronary risk factors in Kawasaki disease treated with additional gammaglobulin

Area of Science:

• Pediatrics
• Cardiology
• Immunology

Background:

• Kawasaki disease (KD) is a leading cause of acquired heart disease in children.
• Coronary artery lesions (CAL) are a significant complication of KD, particularly in non-responders to initial therapy.
• Intravenous immunoglobulin (IVIG) is the standard treatment for KD.

Purpose of the Study:

• To evaluate the efficacy of early additional IVIG in preventing CAL in KD patients with persistent or recrudescent fever after initial IVIG.
• To identify risk factors associated with CAL development in non-responder KD patients.

Main Methods:

• A retrospective study of 44 KD patients treated with additional IVIG for persistent/recrudescent fever.
• Outcomes assessed included CAL by echocardiography and duration of fever (pre- and post-additional IVIG).
• Univariate and multivariate analyses were performed to identify risk factors for CAL.

Main Results:

• The number of febrile days before additional IVIG was the only independent risk factor for CAL in multivariate analysis (≥10 days; OR 7.86).
• Early administration of additional IVIG (before 10 febrile days) was associated with a lower prevalence of CAL.
• Other potential risk factors included post-treatment fever duration, divided initial IVIG doses, WBC count, and CRP levels.

Conclusions:

• Early administration of additional IVIG infusions in initial non-responders may prevent CAL in Kawasaki disease.
• Prompt retreatment within 10 febrile days is crucial for mitigating cardiac sequelae in KD.
• This finding supports timely intervention strategies for Kawasaki disease management.