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Vasopressin and copeptin levels in children with sepsis and septic shock
Jan Hau Lee1, Yoke Hwee Chan, Oi Fah Lai
1Children's Intensive Care Unit, Department of Paediatric Subspecialties, KK Women's and Children's Hospital, 100 Bukit Timah Road, Singapore, 229899, Singapore. leejanhau@gmail.com
Insights
In pediatric sepsis, vasopressin levels varied between groups, but neither vasopressin nor copeptin reliably indicated disease severity or outcomes in children with septic shock.
Area of Science:
- Pediatric critical care medicine
- Endocrinology
- Sepsis research
Background:
- Vasopressin and copeptin levels are not well-defined in pediatric sepsis.
- Understanding these biomarkers is crucial for managing pediatric septic shock.
Purpose of the Study:
- To compare serum vasopressin and copeptin levels in children with sepsis or septic shock versus healthy controls.
- To investigate if vasopressin and copeptin levels correlate with disease severity and clinical outcomes in pediatric septic shock.
Main Methods:
- Study included three groups: healthy children, children with sepsis, and children with septic shock.
- Blood samples were collected at baseline and serially for up to 120 hours in the septic shock group.
- Competitive immunoassays were used to measure vasopressin and copeptin concentrations.
Main Results:
- Baseline vasopressin levels differed significantly among the three groups (p < 0.05).
- No significant difference in baseline copeptin levels was observed between groups (p = 0.14).
- Vasopressin and copeptin levels did not show differences in early versus late stages of pediatric septic shock.
Conclusions:
- Baseline vasopressin levels showed variations across healthy children, sepsis, and septic shock groups.
- Vasopressin and copeptin are not robust biomarkers for predicting severity or clinical outcomes in pediatric septic shock.
Purpose:
Levels of vasopressin and its precursor copeptin in pediatric sepsis and septic shock are not well defined. The main aim of this study is to compare the serum levels of vasopressin and copeptin in children with septic shock or sepsis and in healthy children. We hypothesized that vasopressin and copeptin levels are elevated in early and late stages of pediatric septic shock.
Methods:
Three groups were included: healthy children, children with clinical diagnosis of sepsis, and children admitted to the pediatric intensive care unit (PICU) with diagnosis of sepsis shock. Blood samples were drawn from children in all groups within 24 h of admission. For the septic shock group, additional samples at 24-h intervals were drawn up to 120 h after PICU admission. We used competitive immunoassays to determine vasopressin and copeptin levels.
Results:
There were 70 children in the control group, 53 children in the sepsis group, and 13 in the septic shock group. At baseline, there was a difference in median vasopressin levels [60.9 (Interquartile range: 32.3, 138.0) vs. 141.1 (45.2, 542) vs. 326 (55.6, 399) pg/mL, p < 0.05], but there was no difference in copeptin levels [1.2 (0.8, 1.8) vs. 1.5 (1.0, 2.2) vs. 0.9 (0.8, 1.2) ng/mL, p = 0.14] between the three groups. There was no difference in vasopressin and copeptin levels in early and late stages of pediatric septic shock.
Conclusions:
Baseline vasopressin levels were different between the three groups. In pediatric septic shock, vasopressin and copeptin levels are not robust markers for severity and clinical outcomes.
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