ISSN - 0973-0958

Pediatric Oncall Journal View Article

Atypical Severe Organ Involvement in Paediatric Dengue: A Case Series from a Tertiary Intensive Care Unit in South India
Reshma Chillal, Hiremath Sagar, Jasir Usman.
Pediatric intensive care unit, Narayana Hrudalaya Hospital, Bangalore, India.
Abstract
Background: Dengue is a major cause of paediatric hospitalization in endemic regions, presenting with atypical organ-specific complications that are easily overlooked. This series describes children with dengue and uncommon cardiac, neurological, and hepatobiliary involvement managed in a tertiary paediatric intensive care unit.
Case presentation: 11 children with serologically confirmed dengue infection were admitted to PICU of Narayana Health City, Bengaluru, during August–October 2024. The cohort manifested life-threatening complications, including myocarditis with cardiogenic shock requiring inotropes, levosimendan, and, in one case, VAECMO, ANEC; and hepatobiliary dysfunction with features suggestive of secondary HLH. All patients received protocol-based dengue management, individualized organ support, and, where indicated, immunomodulatory therapy with corticosteroids, IVIG, and biologic agents such as Anakinra. 3 had single-organ involvement, while others showed multisystem disease with significant plasma leakage. 7 out of 11 children to hospital discharge with some requiring prolonged ICU care.
Conclusions: Atypical manifestations of dengue involving the heart, liver, and central nervous system are not uncommon. Early recognition, appropriate referral to intensive care, meticulous fluid and haemodynamic management, and judicious use of immunomodulation are essential to improving outcomes in such cases.
Why this article important?
The significance of this case series lies in highlighting immune-mediated multiorgan dysfunction in severe paediatric dengue, particularly among children who fail to respond to appropriate fluid resuscitation. While dengue-associated plasma leakage and shock are well described, severe organ involvement, including acute necrotizing encephalopathy, myocarditis, and HLH-like hyperinflammatory states, remains under-recognised and may contribute to clinical deterioration if not promptly identified. Persistent instability despite adequate fluid management should prompt clinicians to consider non-hemodynamic mechanisms of disease progression, including dysregulated host immune responses. Early recognition of these patterns is essential, as continued fluid escalation in such scenarios may be ineffective or harmful. This series underscores the importance of broadening diagnostic and therapeutic perspectives when managing critically ill children with dengue.
Summary of article
This manuscript presents a single-centre case series of paediatric patients with dengue infection complicated by multiorgan involvement during a single epidemic period. The cases highlight severe and atypical manifestations, including acute necrotizing encephalopathy (ANEC), myocarditis, and hemophagocytic lymphohistiocytosis (HLH)-like features, reflecting the diverse immunopathological spectrum of severe dengue. Management strategies in these patients included immunomodulatory therapies such as corticosteroids, intravenous immunoglobulin (IVIG), and anakinra, used in addition to standard supportive care. Although robust evidence supporting the use of these therapies in severe dengue is limited, their application in this series was guided by clinical deterioration, suspected hyperinflammatory states, and evolving organ dysfunction.

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