RENIN AND ANGIOTENSIN (1-7) OFFER PREDICTIVE VALUE IN PEDIATRIC SEPSIS: FINDINGS FROM PROSPECTIVE OBSERVATIONAL...

Area of Science:

• Pediatric critical care medicine
• Immunology
• Endocrinology

Background:

• Pediatric sepsis involves a dysregulated immune response to infection.
• Renin-angiotensin system (RAS) alterations are implicated in adult infections.
• The role of RAS dysregulation in pediatric sepsis is not well understood.

Purpose of the Study:

• To investigate the association between serum RAS levels and pediatric sepsis.
• To determine if RAS components can predict sepsis outcomes and organ dysfunction.
• To evaluate RAS markers as diagnostic tools for pediatric sepsis.

Main Methods:

• Serum samples analyzed from derivation and validation cohorts of pediatric sepsis patients, critically ill controls, and healthy controls.
• Serum renin and angiotensin (1-7) levels measured on pediatric intensive care unit admission.
• Correlation of RAS levels with patient survival and organ dysfunction status.

Main Results:

• Significantly elevated serum renin and decreased serum angiotensin (1-7) in pediatric sepsis patients compared to healthy controls.
• These trends were consistent across both derivation and validation cohorts.
• Higher renin and lower angiotensin (1-7) levels were associated with non-survival and greater organ dysfunction.
• A diagnostic model combining renin, angiotensin (1-7), and procalcitonin showed high predictive accuracy (AUC 0.87).

Conclusions:

• Circulating renin and angiotensin (1-7) levels are significantly altered in pediatric sepsis.
• These RAS components demonstrate predictive value for sepsis outcomes in children.
• RAS markers, alongside procalcitonin, offer a promising diagnostic approach for pediatric sepsis.