<![CDATA[Background: Dengue virus infection represents a significant cause of morbidity and mortality in pediatric populations across endemic regions. The progression to severe disease is characterized by a critical phase of plasma leakage. The World Health Organization (WHO) has established warning signs to aid in clinical triage, yet the independent clinical significance of these signs, particularly abdominal pain and vomiting, requires more precise clarification to optimize patient management. Methods: This study was a retrospective, cross-sectional analysis conducted at Wangaya General Hospital in Denpasar, Indonesia. Electronic medical records of 172 pediatric patients hospitalized with a diagnosis of dengue between January and May 2024 were reviewed. The primary outcome was significant plasma leakage, defined as a hematocrit increase of 20% or more from the admission baseline. Bivariate and multivariate logistic regression analyses were performed to determine the association of abdominal pain and vomiting with plasma leakage, controlling for the confounding effects of age, gender, and the day of fever at assessment. Results: In the multivariate logistic regression model, the presence of abdominal pain was independently and significantly associated with an increased likelihood of plasma leakage (Adjusted Odds Ratio [aOR]: 2.15, 95% Confidence Interval [CI]: 1.05–4.41; p=0.036). Conversely, the association for vomiting was not statistically significant after adjustment for confounders (aOR: 1.25, 95% CI: 0.65–2.42; p=0.508). The co-occurrence of both symptoms was also identified as a significant indicator of plasma leakage in the adjusted model (aOR: 2.09, 95% CI: 1.01–4.34; p=0.047). Conclusion: In this retrospective analysis of a hospitalized pediatric study, abdominal pain emerged as a robust independent correlate of significant plasma leakage, whereas vomiting did not. This differential association suggests that abdominal pain should be weighted more heavily in the clinical assessment of children with dengue as a key indicator of ongoing or impending hemoconcentration. These findings, while limited by their retrospective nature, can help refine clinical risk assessment in resource-constrained settings.]]>
