Adult respiratory syncytial virus infection and hypoxic cardiac arrest – Coexistent or causal?

ABSTRACT

Purpose of the study Respiratory syncytial virus (RSV) is a wellknown pathogen in pediatric patients. (1) However, it also causes substantial morbidity and mortality in adults, posing a major healthcare problem. (2). Methods:We reviewed a patient suffering from cardiac arrest (CA) and acute RSV infection who was admitted to the Department of Emergency Medicine, Medical University of Vienna, Austria. Results: A 74-year-old male patient complained about dyspnea and later went into CA. Bystander BLS was conducted for 7 minutes, and arriving EMS performed advanced life support (ALS). The initial rhythm check showed pulseless electrical activity. After further 6 minutes of ALS, sustained return of spontaneous circulation (ROSC) was achieved, and the patient was transported to the emergency department (ED). At the ED, the ECG showed no ischemia-like patterns, and point-of-care ultrasound revealed a highly reduced left ventricular function. Laboratory results showed signs of inflammation, and a routine PCR turned out positive for RSV. Awhole body computed tomography revealed no acute pathology, and before a background of chronic pulmonary disease, the CA event was deemed as hypoxic caused by exacerbation of the chronic pulmonary pathologies either parallel to- or directly through an acute RSV infection. Conclusion: An RSV infection should be considered during post- ROSC in adult patients with presumed hypoxic etiology of CA. From a public health perspective, an immune-naivety for RSV caused by the COVID-19 pandemic may potentially induce a rise in cases, morbidity, and mortality in the future.