• Ming Wei Lee and Anne En Goh.
• Department of Paediatrics, KK Women's and Children's Hospital, Singapore.
• Singap Med J. 2021 Dec 1; 62 (12): 642-646.

IntroductionThis study aimed to investigate the trend and seasonality of infection due to respiratory syncytial virus (RSV) at KK Women's and Children's Hospital (KKH) in Singapore and to examine the risk factors for mortality among children with RSV infection requiring admission to the paediatric intensive care unit (PICU).MethodsA retrospective study was conducted at KKH on children with RSV infections who were admitted to the PICU between January 2004 and December 2010. The medical records of children who died from RSV infections were reviewed. Linear regression was performed to determine the risk factors for RSV mortality.ResultsRSV infection was documented in 5,785 children during the study period; the infection was noted to be occurring throughout the year, with a small increase in prevalence between the months of June and August every year. Among 85 (1.5%) out of 5,785 children who were admitted to the PICU for RSV infection, 74 (1.3%) survived and 11 (0.2%) died. Multivariate logistic regression analysis showed that haemodynamically significant cardiac disease (odds ratio [OR] 12.2, 95% confidence interval [CI] 0.9-16.7, p = 0.05), immunodeficiency (OR 71.4, 95% CI 8.2-500, p < 0.001) and metabolic disease (OR 71.4, 95% CI 4.3-1,000, p = 0.003) were independent risk factors for mortality in RSV infections. Prematurity increased the risk of admission to the PICU but was not significantly associated with mortality.ConclusionChildren with haemodynamically significant cardiac disease, immunodeficiency and metabolic disease were at higher risk of death after hospitalisation for RSV-related illnesses. These children should be considered for palivizumab prophylaxis.Copyright: © Singapore Medical Association.

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