Systemic Immune Inflammation Index, Systemic Inflammation Response Index, Aggregate Index of Systemic Inflammation,

Kamile Yucel1, Sekibe Işık Disci2

  • 1Department of Medical Biochemistry, Faculty of Medicine, KTO Karatay University, Konya, Turkey.

Insights

Systemic Inflammatory Response Index (SIRI) and Aggregate Index of Systemic Inflammation (AISI) show elevated levels in children with pneumonia. These simple, inexpensive indices demonstrate potential for early pneumonia diagnosis and treatment.

Area of Science:

  • Pediatric Medicine
  • Inflammation Biomarkers
  • Diagnostic Tools

Background:

  • Pneumonia is a leading cause of childhood illness.
  • Accurate and early diagnosis is crucial for effective treatment.
  • Novel inflammatory markers require evaluation for clinical utility.

Purpose of the Study:

  • To assess the diagnostic value of Systemic Immune Inflammation Index (SII), Systemic Inflammatory Response Index (SIRI), Aggregate Index of Systemic Inflammation (AISI), and follistatin-like protein-1 (FSTL-1) in pediatric pneumonia.
  • To compare these markers between children with pneumonia and healthy controls.

Main Methods:

  • A case-control study involving 44 children with pneumonia and 45 healthy children.
  • Calculation of SIRI and AISI from hemogram data.
  • Measurement of FSTL-1 levels using Enzyme-Linked Immunosorbent Assay (ELISA).

Main Results:

  • Significantly higher levels of white blood cells, monocytes, eosinophils, neutrophils, C-reactive protein, SIRI, and AISI were observed in the pneumonia group.
  • FSTL-1 levels were higher in pneumonia patients but without statistical significance.
  • Receiver Operating Characteristic (ROC) analysis indicated the highest Area Under the Curve (AUC) for SIRI (0.754) and AISI (0.713).

Conclusions:

  • SIRI and AISI are significantly elevated in children with pneumonia compared to healthy controls.
  • SIRI and AISI demonstrate strong diagnostic potential, evidenced by high AUC values.
  • These indices offer a simple, cost-effective approach for early pneumonia diagnosis and treatment guidance.