Patrón de alteraciones en la radiografía de tórax de niños hospitalizados por infección causada por virus influenza A (H1N1)

Abstract

The first cases of H1N1- type Influenza virus infection in humans were reported in 2009, and since then, it rapidly expanded and became pandemic. At that time, an 88.5% increase in emergency consultations was observed in our institution, including adults and children and H1N1- type Influenza virus infection was clinically diagnosed in 10,048patients, 45.6% of them with laboratory confirmation. A total of 59 child, 33 girls and 26 boys, aged between 1 month and 15.5 years old, needed hospitalization. The average of hospitalization time was 3.9 days, 9 patients required intensive unit care and 4 of them mechanical ventilation. No fatal cases were registered in this series. Associated infection was confirmed in 15 patients: VRS (5), bacterial (9) and Mycoplasma (1). The most frequent radiological pattern was bilateral interstitial lung involvement (72%). A mixed interstitial/alveolar pattern was observed in 78% of patients with proven bacterial super infection. The purpose of this review is to describe the radiological pattern observed in children who needed hospitalization due to of H1Nl- type Influenza virus infection, during epidemic last year.