Adrenal response in children with septic shock

Area of Science:

• Pediatric Endocrinology
• Critical Care Medicine
• Pediatric Infectious Diseases

Background:

• Septic shock in children is a critical condition with significant mortality.
• Adrenal function assessment is crucial for managing pediatric septic shock.
• Understanding cortisol profiles aids in predicting outcomes.

Purpose of the Study:

• To characterize serum cortisol patterns in pediatric septic shock.
• To evaluate adrenal response to corticotrophin stimulation.
• To determine the impact of adrenal function on pediatric septic shock outcomes and mortality.

Main Methods:

• A cohort of 22 children with septic shock was studied in Brazil.
• Serum cortisol levels were measured at diagnosis and after low-dose corticotrophin stimulation.
• Adrenal insufficiency was defined by specific baseline and stimulated cortisol thresholds.

Main Results:

• Adrenal insufficiency was prevalent, affecting 77.3% of patients.
• Patients who died had higher baseline cortisol levels (>690 nmol/l).
• A blunted cortisol response (<250 nmol/l) correlated with 60% mortality and increased mortality risk.

Conclusions:

• Adrenal insufficiency is common in pediatric septic shock.
• Low-dose corticotrophin testing effectively differentiates normal stress response from adrenal failure.
• Impaired adrenal response to corticotrophin is a significant predictor of mortality in pediatric septic shock.