• Erica R Gross, Jeffrey W Gander, Ari Reichstein, Robert A Cowles, Charles J H Stolar, and William Middlesworth.
• Division of Pediatric Surgery, Morgan Stanley Children's Hospital, New York-Presbyterian, New York, NY, USA. eg2561columbia.edu
• Pediatr Crit Care Me. 2011 Mar 1; 12 (2): e99-e101.

ObjectiveTo report an atypical presentation of pH1N1-09 influenza infection in children as fulminant myocarditis and tamponade and the successful treatment with extracorporeal membrane oxygenation.DesignCase report.SettingPediatric cardiac intensive care unit in a quarternary care children's hospital.PatientsTwo girls, 5 and 7 yrs of age, infected with pH1N1-09 influenza virus who presented in cardiogenic shock with a pericardial effusion and echocardiographic evidence of tamponade from fulminant myocarditis.InterventionsBoth patients received a pericardiocentesis. One was managed with multiple, high-dose inotropic agents, whereas the other required institution of extracorporeal membrane oxygenation.Measurements And Main ResultsAcute respiratory distress syndrome is the major reported clinical manifestation of pH1N1-09 influenza virus infection in hospitalized pediatric patients. In this report we describe two children with confirmed pH1N1-09 influenza infection that required intensive care for fulminant myocarditis. Neither patient had the typical symptoms of influenza-like illness, respiratory compromise, or evidence of pulmonary involvement. One child required extracorporeal membrane oxygenation. Both children survived to hospital discharge.ConclusionspH1N1-09 influenza infection can cause fulminant myocarditis in the healthy pediatric population. The clinical presentation may be nonspecific, and the lack of pulmonary symptoms may make diagnosis difficult. Extracorporeal membrane oxygenation support may offer an effective bridge to the recovery of heart function.

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