• Indian J Pediatr · Apr 2012

    Predictors of mortality in hospitalized children with pandemic H1N1 influenza 2009 in Pune, India.

    • Aarti Avinash Kinikar, Rajesh K Kulkarni, Chhaya T Valvi, Vidya Mave, Nikhil Gupte, Sandhya Khadse, Renu Bhardwaj, Anju Kagal, Shaila Puranik, Amita Gupta, Robert Bollinger, and Arun Jamkar.
    • Department of Pediatrics, B.J. Medical College and Sassoon General Hospital, Pune, MS, India. aarti.kinikar63@gmail.com
    • Indian J Pediatr. 2012 Apr 1;79(4):459-66.

    ObjectiveTo analyse the factors associated with increased mortality among Indian Children with H1N1.MethodsData were abstracted from available hospital records of children less than 12 y of age, who were admitted to Sassoon General Hospital in Pune, India, with confirmed pandemic 2009 H1N1 influenza infection from August 2009 through January 2010. Logistic regression analysis was used to identify clinical characteristics associated with mortality.ResultsOf 775 pediatric cases admitted with Influenza Like Illness (ILI), 92 (11.8%) had confirmed H1N1 influenza infection. The median age of HIN1 cases was 2.5 y; 13 (14%) had an associated co-morbid condition. Median duration of symptoms was 4 d (interquartile range (IQR), 3-7 d). All 92 H1N1 cases received oseltamivir and empiric antimicrobials on admission. Intensive care unit (ICU) admission was required for 88 (96%) children, and 20 (23%) required mechanical ventilation.Fifteen children (16%) died; mortality was associated with presence of diffuse alveolar infiltrate on admission chest radiography (odds ratio (OR) 45, 95%CI :5.4-370; p < 0.001), use of corticosteroids in ARDS in children who required mechanical ventilation (OR 8.12, 95%CI: 2.44-27.05; p = 0.001), SpO(2) <80% on admission (OR 32.8, 95% CI: 5.8-185.5; p < 0.001) and presence of ARDS (OR 345.3, 95% CI :33.5-3564.1; p < 0.001). Necropsy from all children who died showed 9 (60%) had ARDS pattern and necrotizing pneumonitis, diffuse hemorrhage and interstitial pneumonia (n = 4 each, 27%) with gram positive organisms consistent with severe viral and bacterial co-infection.ConclusionsHypoxia, ARDS and use of corticosteroids in children with ARDS who were mechanically ventilated were the factors associated with increased odds of mortality. Necropsy also suggested bacterial co-infection as a risk factor.

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