Sreeram N, Watson J G, Hunter S
Department of Paediatrics, Newcastle General Hospital, UK.
Acta Paediatr Scand. 1991 Jan;80(1):133-6. doi: 10.1111/j.1651-2227.1991.tb11747.x.
Twenty-one children with normal hearts were studied during acute bronchiolitis. Doppler echocardiography showed tricuspid valve regurgitation in 11 patients, many of whom had evidence of raised pulmonary artery systolic pressure. Serial studies in those with severe infection showed that tricuspid regurgitation disappears with clinical improvement.