Wide variations in regional and seasonal patterns in hospital and ICU admissions were noted in children with respiratory syncytial virus-associated acute respiratory illness across the United States. Results from our study help us better understand the seasonality and regionality of respiratory syncytial virus infection in the United States with the goal to decrease the financial impact on our already stressed healthcare system by being better prepared for respiratory syncytial virus season.

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Several risk factors were identified in infants with HLHS in whom a tracheostomy was placed during their first hospitalization. Despite an overall increase in rates of tracheostomies during the study period, the mortality rate did not improve among these patients. Appropriate family counseling and thorough preoperative case selection is suggested when discussing possible tracheostomy placement in infants with HLHS.

We demonstrated worsening outcomes in children receiving ECMO with RRT compared to children receiving ECMO without RRT. Although the results could reflect confounding by severity of illness, they provide a rationale for prospective testing of use of RRT in critically ill children receiving ECMO with heart surgery.