title: Respiratory syncytial virus infection and neurologic abnormalities: retrospective cohort study.
abstract: Respiratory syncytial virus is a common cause of acute respiratory infection in children. Previous reports have associated respiratory syncytial virus infection and acute neurologic symptoms, including apnea and seizures. This study examined the prevalence of acute neurologic symptoms associated with respiratory syncytial virus and non-respiratory syncytial virus respiratory infections in children requiring admission to a pediatric intensive care unit. We screened all admissions over a 4-year period at a single center, identifying children between birth and 2 years of age with bronchiolitis or acute upper respiratory infection. Children with a history of prematurity, preexisting medical conditions, or prior neurologic problems were excluded. Retrospective chart review of 236 admissions was conducted, identifying the etiology of respiratory infection and the presence or absence of acute neurologic signs or symptoms. This study demonstrated a prevalence of acute neurologic signs or symptoms in 36.4% of respiratory syncytial virus-negative patients (n = 115) and 39.1% in the respiratory syncytial virus-positive group (n = 121). Apnea, the most common symptom, was observed in 19.8% of respiratory syncytial virus-positive cases and 16.5% of negative patients. Seizures were reported in 6.6% of the positive cases and in 12.2% of the negative cohort. These differences showed no statistical significance. Although neurologic signs and symptoms are common in this population of children with acute respiratory infection, there was no significant difference in the prevalence of neurologic problems between respiratory syncytial virus-positive and -negative patients.
authors.affiliation: Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, AZ, USA. nathaniel.kho@comcast.net
authors.forename: Nathaniel
authors.initials: N
authors.lastname: Kho
authors.forename: John F
authors.initials: JF
authors.lastname: Kerrigan
authors.forename: Timothy
authors.initials: T
authors.lastname: Tong
authors.forename: Richard
authors.initials: R
authors.lastname: Browne
authors.forename: Janet
authors.initials: J
authors.lastname: Knilans
mesh_terms: D000046:Academic Medical Centers; D000208:Acute Disease; D001049:Apnea / Q000453:epidemiology / Q000209:etiology*; D001130:Arizona; D001990:Bronchiolitis, Viral / Q000150:complications / Q000453:epidemiology; D016009:Chi-Square Distribution; D015331:Cohort Studies; D015897:Comorbidity; D018792:Encephalitis, Viral / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology*; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007363:Intensive Care Units, Neonatal; D015278:Intensive Care Units, Pediatric; D007902:Length of Stay / Q000706:statistics & numerical data; D008297:Male; D009460:Neurologic Examination / Q000706:statistics & numerical data; D018357:Respiratory Syncytial Virus Infections / Q000150:complications* / Q000175:diagnosis / Q000453:epidemiology; D012136:Respiratory Syncytial Viruses; D012141:Respiratory Tract Infections / Q000150:complications* / Q000175:diagnosis / Q000453:epidemiology; D012189:Retrospective Studies; D012640:Seizures / Q000453:epidemiology / Q000209:etiology*; D013223:Statistics as Topic