摘要: Clinical and experimental studies have demonstrated that the pathophysiology of RSV infection is largely due to host responses rather than cytopathic effects virus. Therefore use anti-inflammatory agents such as steroids appears be an attractive therapeutic option. This has been studied extensively a recent meta-analysis concludes does not reduce length stay in hospital by clinically relevant time (Garrison et al., 2000). A further multicenter RCT study using intravenous Dexamethasone patients admitted PICU also did demonstrate effect hospital. subgroup analysis young infants with bronchiolitis suggested reduction duration ventilation (van Woensel 2003).