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Serum lipase as an early predictor of severity in pediatric acute pancreatitis
Michael J Coffey1, Scott Nightingale, Chee Y Ooi
1School of Women's and Children's Health, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia.
Insights
Serum lipase levels within 24 hours can predict severe pediatric acute pancreatitis (AP). A lipase level 7 times the upper limit of normal strongly indicates a severe course, aiding early clinical decisions.
Area of Science:
- Pediatric Gastroenterology
- Biochemistry
- Clinical Diagnostics
Background:
- Pediatric pancreatitis is increasingly common but poorly understood.
- Existing predictive scores for severe pediatric acute pancreatitis (AP) are often adapted from adult data or impractical for clinical use.
- Early identification of severe AP in children is crucial due to significant morbidity and mortality risks.
Purpose of the Study:
- To identify specific laboratory parameters for the early prediction of severe acute pancreatitis (AP) in children.
- To establish a simple, reliable predictor for severe pediatric AP course.
- To improve clinical management by enabling timely interventions for severe cases.
Main Methods:
- Retrospective review of pediatric acute pancreatitis (AP) cases from January 2000 to July 2011 across two pediatric hospitals.
- Laboratory parameters measured within 24 hours of presentation were analyzed to identify predictors of severe AP.
- A derivation cohort was used to develop predictive models, which were then validated in a separate cohort.
Main Results:
- A total of 131 pancreatitis episodes were analyzed, with 34% severe in the derivation cohort and 24% severe in the validation cohort.
- Serum lipase levels were significantly higher in severe pediatric AP cases compared to mild cases (median 18.1 vs 4.9 × ULN).
- Serum lipase ≥7 × ULN within 24 hours was identified as a significant predictor of severe AP, confirmed in both cohorts (OR 7.1, P < 0.001).
Conclusions:
- Elevated serum lipase (≥7 × ULN) within 24 hours of presentation serves as a simple and effective early clinical predictor for severe acute pancreatitis (AP) in children.
- A lipase level below this threshold is strongly associated with a milder disease course.
- This finding can aid clinicians in risk stratification and prompt management of pediatric AP.
Objectives:
Pediatric pancreatitis remains poorly understood despite increasing incidence and risk of morbidity and mortality. Present predictive scores for severe pediatric acute pancreatitis (AP) are either extrapolated from adults or difficult to use in practice. We aimed to identify laboratory parameters for early prediction of severity of the course of pediatric AP.
Methods:
A retrospective review of children with AP (January 2000-July 2011) was performed at 2 pediatric hospitals. Predictors of severe AP using laboratory parameters measured within 24 hours of presentation were derived in the cohort from one institution and validated in the other.
Results:
A total of 131 pancreatitis episodes, 73 (34% severe) and 58 (24% severe) in the derivation and validation cohorts respectively, were reviewed. In the derivation cohort, serum lipase was significantly higher in severe versus mild AP (median [interquartile range] 18.1 [9.2-39.1] vs 4.9 (3.2-13.3) × upper limit of normal [ULN]; P = 0.002). Logistic regression analysis in the derivation cohort showed serum lipase ≥7 × ULN to be predictive of severe AP. This finding was confirmed in the validation cohort. Based on the combined derivation and validation data, serum lipase ≥7 × ULN was associated with an odds ratio of 7.1 (95% confidence interval 2.5-20.5; P < 0.001) for developing severe AP. Sensitivity, specificity, positive and negative predictive values, and positive and negative likelihood ratios were 85%, 56%, 46%, 89%, 1.939, and 0.27, respectively.
Conclusions:
Serum lipase ≥7 × ULN within 24 hours of presentation may be a simple clinical predictor of severe AP in children. Lipase levels below this threshold are strongly associated with a milder course.
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